Prevent potion core applying its health fix (whatever that is) when resurrecting, fixes #178

It also simplifies the code and removes the end slow time packet entirely

.github/ISSUE_TEMPLATE/bug_report.md

@@ -7,10 +7,10 @@ assignees: ''
 
 ---
 
-Please read the [guide for contributing](https://github.com/Electroblob77/Wizardry/blob/1.12.2/guide_for_contributing.md) before posting.
+Please read the [guide for contributing](https://github.com/Electroblob77/Wizardry/blob/1.12.2/CONTRIBUTING.md) before posting.
 
 Minecraft version: 1.12.2 [change as necessary]  
-Wizardry version: 4.2.2 [change as necessary]
+Wizardry version: 4.2.8 [change as necessary]
 Environment: Singleplayer/LAN game/Server [delete as necessary]
 
 Issue details: [describe what you were doing when the issue occurred, what went wrong, what you expected to happen, etc.]

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,7 +7,7 @@ assignees: ''
 
 ---
 
-Please read the [guide for contributing](https://github.com/Electroblob77/Wizardry/blob/1.12.2/guide_for_contributing.md) before posting.
+Please read the [guide for contributing](https://github.com/Electroblob77/Wizardry/blob/1.12.2/CONTRIBUTING.md) before posting.
 
 Minecraft versions: [if this suggestion only applies to some versions, list them here]
 

.github/ISSUE_TEMPLATE/question.md

@@ -7,10 +7,10 @@ assignees: ''
 
 ---
 
-Please read the [guide for contributing](https://github.com/Electroblob77/Wizardry/blob/1.12.2/guide_for_contributing.md) before posting.
+Please read the [guide for contributing](https://github.com/Electroblob77/Wizardry/blob/1.12.2/CONTRIBUTING.md) before posting.
 
 Minecraft version: 1.12.2 [change as necessary]  
-Wizardry version: 4.2.2 [change as necessary]
+Wizardry version: 4.2.8 [change as necessary]
 
 Question details: [explain your question here]
 

CREDITS.md

@@ -1,7 +1,7 @@
 # Credits
 
 Electroblob's Wizardry  
-Version 4.2.3  
+Version 4.2.8  
 For Minecraft 1.12.2
 
 Designed, coded and textured by Electroblob
@@ -21,15 +21,18 @@ In addition, I'd like to thank the following individuals for their contributions
 - Tora-B
 - Avatair
 - Aeronica
+- UltraHex
+- Azim-Palmer
+- raoulvdberge
 
 #### Translations
 
-- Spanish and Mexican Spanish: MadWrist 
+- Spanish and Mexican Spanish: MadWrist
-- Russian: VilagVil, kellixon 
+- Russian: VilagVil, kellixon, bigenergy
-- French: Hahdrim 
+- French: Hahdrim
-- Brazilian Portuguese: lorrampi 
+- Brazilian Portuguese: lorrampi
-- Chinese: ZHENGLOC, dragon-evol 
+- Chinese: ZHENGLOC, dragon-evol
-- Korean: shejery, rewi_wire 
+- Korean: shejery, rewi_wire
 - Polish: Trozuu
 
 Lightning ray sound effect from OhhWowProductions

ISSUE_TEMPLATE.md

@@ -1,7 +1,7 @@
 Please read the [guide for contributing](https://github.com/Electroblob77/Wizardry/blob/1.12.2/guide_for_contributing.md) before posting.
 
 Minecraft version: 1.12.2 [change as necessary]  
-Wizardry version: 4.1.4 [change as necessary]
+Wizardry version: 4.2.8 [change as necessary]
 Environment: Singleplayer/LAN game/Server [delete as necessary]
 
 Issue details: [describe what you were doing when the issue occurred, what went wrong, what you expected to happen, etc.]

build.gradle

@@ -11,7 +11,7 @@ apply plugin: 'net.minecraftforge.gradle.forge'
 //Only edit below this line, the above code adds and enables the necessary things for Forge to be setup.
 
 
-version = "4.2.5" // There, it matches semver, happy now?
+version = "4.2.8" // There, it matches semver, happy now?
 group= "electroblob.wizardry"// http://maven.apache.org/guides/mini/guide-naming-conventions.html
 archivesBaseName = "ElectroblobsWizardry"
 

src/main/java/electroblob/wizardry/CommonProxy.java

@@ -7,6 +7,7 @@ import electroblob.wizardry.spell.Spell;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.SoundCategory;
@@ -99,9 +100,9 @@ public class CommonProxy {
 		return ((ItemSpectralBow)WizardryItems.spectral_bow).getDefaultDurabilityForDisplay(stack);
 	}
 
-	/** Like {@link CommonProxy#addMultiLineDescription(List, String, Style)}, but style defaults to light grey. */
+	/** Like {@link CommonProxy#addMultiLineDescription(List, String, Style, Object...)}, but style defaults to light grey. */
-	public void addMultiLineDescription(List<String> tooltip, String key){
+	public void addMultiLineDescription(List<String> tooltip, String key, Object... args){
-		this.addMultiLineDescription(tooltip, key, new Style().setColor(TextFormatting.GRAY));
+		this.addMultiLineDescription(tooltip, key, new Style().setColor(TextFormatting.GRAY), args);
 	}
 
 	/**
@@ -112,7 +113,7 @@ public class CommonProxy {
 	 * @param key The translation key for the description
 	 * @param style A style to apply
 	 */
-	public void addMultiLineDescription(List<String> tooltip, String key, Style style){}
+	public void addMultiLineDescription(List<String> tooltip, String key, Style style, Object... args){}
 
 	// SECTION Packet Handlers
 	// ===============================================================================================================
@@ -139,8 +140,6 @@ public class CommonProxy {
 
 	public void handleAdvancementSyncPacket(PacketSyncAdvancements.Message message){}
 
-	public void handleEndSlowTimePacket(PacketEndSlowTime.Message message){}
-
 	public void handleResurrectionPacket(PacketResurrection.Message message){}
 
 	public void handlePossessionPacket(PacketPossession.Message message){}
@@ -238,6 +237,9 @@ public class CommonProxy {
 				+ "of sound events, but the given array contained less than 3 sound events!");
 		playSpellSoundLoop(world, x, y, z, spell, sounds[0], sounds[1], sounds[2], category, volume, pitch, duration);
 	}
+
+	/** Starts the first-person blink overlay effect for the specified player. */
+	public void playBlinkEffect(EntityPlayer player){}
 	
 	/**
 	 * Gets the client side world using Minecraft.getMinecraft().world. <b>Only to be called client side!</b> Returns

src/main/java/electroblob/wizardry/Settings.java

@@ -169,6 +169,8 @@ public final class Settings {
 	/** <b>[Server-only]</b> Whether to replace Minecraft's distance-based fall damage calculation with an equivalent,
 	 * velocity-based one. */
 	public boolean replaceVanillaFallDamage = true;
+	/** <b>[Server-only]</b> Whether using bonemeal on grass blocks has a chance to grow crystal flowers. */
+	public boolean bonemealGrowsCrystalFlowers = true;
 	/**
 	 * <b>[Server-only]</b> List of registry names of entities which summoned creatures are allowed to attack, in addition
 	 * to the defaults.
@@ -431,7 +433,7 @@ public final class Settings {
 
 		Property property;
 
-		for(Spell spell : Spell.getSpells(Spell.allSpells)){
+		for(Spell spell : Spell.getAllSpells()){
 			property = config.get(SPELLS_CATEGORY, spell.getRegistryName().toString(), true,
 					I18n.translateToLocal("spell." + spell.getUnlocalisedName() + ".desc"));
 			// Uses the same config key as the spell name, because - well, that's what it's called!
@@ -542,6 +544,13 @@ public final class Settings {
 		slowTimeAffectsPlayers = property.getBoolean();
 		propOrder.add(property.getName());
 
+		property = config.get(GAMEPLAY_CATEGORY, "bonemealGrowsCrystalFlowers", true,
+				"Whether using bonemeal on grass blocks has a chance to grow crystal flowers.");
+		property.setLanguageKey("config." + Wizardry.MODID + ".bonemeal_grows_crystal_flowers");
+		Wizardry.proxy.setToNamedBooleanEntry(property);
+		bonemealGrowsCrystalFlowers = property.getBoolean();
+		propOrder.add(property.getName());
+
 		property = config.get(GAMEPLAY_CATEGORY, "mobLootTableWhitelist", new String[0], "Whitelist for loot tables to inject additional mob drops (as specified in loot_tables/entities/mob_additions.json) into. Wizardry makes a best guess as to which loot tables belong to hostile mobs, but this may not always be correct or appropriate; add loot table locations (not entity IDs) to this list to manually include them.");
 		property.setLanguageKey("config." + Wizardry.MODID + ".mob_loot_table_whitelist");
 		property.setRequiresMcRestart(true);

src/main/java/electroblob/wizardry/Wizardry.java

@@ -32,6 +32,7 @@ import net.minecraftforge.fml.common.registry.GameRegistry;
 import org.apache.logging.log4j.Logger;
 
 import java.io.File;
+import java.util.Calendar;
 
 /**
  * <i>"Electroblob's Wizardry adds an RPG-like system of spells to Minecraft, with the aim of being as playable as
@@ -63,7 +64,7 @@ public class Wizardry {
 	 * 1.x.x represents Minecraft 1.7.x versions, 2.x.x represents Minecraft 1.10.x versions, 3.x.x represents Minecraft
 	 * 1.11.x versions, and so on.
 	 */
-	public static final String VERSION = "4.2.5";
+	public static final String VERSION = "4.2.8";
 
 	// IDEA: Triggering of inbuilt Forge events in relevant places?
 	// IDEA: Abstract the vanilla particles behind the particle builder
@@ -88,6 +89,8 @@ public class Wizardry {
 	 * this folder contains the main config file and the global spell properties folder, if used. */
 	public static File configDirectory;
 
+	public static boolean tisTheSeason;
+
 	// The instance of wizardry that Forge uses.
 	@Instance(Wizardry.MODID)
 	public static Wizardry instance;
@@ -106,6 +109,10 @@ public class Wizardry {
 		configDirectory = new File(event.getModConfigurationDirectory(), Wizardry.MODID);
 		settings.initConfig(event);
 
+		Calendar calendar = Calendar.getInstance();
+		tisTheSeason = calendar.get(Calendar.MONTH) + 1 == 12 && calendar.get(Calendar.DAY_OF_MONTH) >= 24
+				&& calendar.get(Calendar.DAY_OF_MONTH) <= 26;
+
 		// Capabilities
 		WizardData.register();
 		DispenserCastingData.register();

src/main/java/electroblob/wizardry/WizardryEventHandler.java

@@ -33,6 +33,9 @@ import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.text.TextComponentTranslation;
 import net.minecraft.world.World;
+import net.minecraft.world.WorldServer;
+import net.minecraft.world.storage.loot.LootContext;
+import net.minecraft.world.storage.loot.LootTable;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.util.FakePlayer;
 import net.minecraftforge.event.entity.PlaySoundAtEntityEvent;
@@ -46,6 +49,7 @@ import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.PlayerEvent.PlayerLoggedInEvent;
 
 import java.util.ArrayList;
+import java.util.List;
 
 /**
  * General-purpose event handler for things that don't fit anywhere else or groups of related behaviours that are better
@@ -343,18 +347,21 @@ public final class WizardryEventHandler {
 
 				Spell spell = ((ISpellCaster)event.getEntity()).getContinuousSpell();
 				SpellModifiers modifiers = ((ISpellCaster)event.getEntity()).getModifiers();
+				int count = ((ISpellCaster)event.getEntity()).getSpellCounter();
 
 				if(spell != null && spell != Spells.none){ // IntelliJ is wrong, do NOT remove the null check!
 
 					if(!MinecraftForge.EVENT_BUS.post(new SpellCastEvent.Tick(SpellCastEvent.Source.NPC, spell, event.getEntityLiving(),
-							modifiers, 0))){
+							modifiers, count))){
 
-						spell.cast(event.getEntity().world, (EntityLiving)event.getEntity(), EnumHand.MAIN_HAND, 0,
+						spell.cast(event.getEntity().world, (EntityLiving)event.getEntity(), EnumHand.MAIN_HAND, count,
 								// TODO: This implementation of modifiers relies on them being accessible client-side.
 								// 		 Right now that doesn't matter because NPCs don't use modifiers, but they might in future
 								((EntityLiving)event.getEntity()).getAttackTarget(), modifiers);
 					}
 				}
+
+				((ISpellCaster)event.getEntity()).setSpellCounter(count + 1);
 			}
 		}
 	}
@@ -366,6 +373,22 @@ public final class WizardryEventHandler {
 
 			EntityPlayer player = (EntityPlayer)event.getSource().getTrueSource();
 
+			// Compatibility with "Lycanites Mobs" -it uses custom loot drop logic which can't be hooked, given the
+			// number of mobs that spawn as Lycanites when this mod is active it would massively nerf the wizard drops
+			//  if we didn't handle this
+			if(event.getEntity().getClass().getCanonicalName().contains("lycanitesmobs"))
+			{
+				WorldServer world = (WorldServer)event.getEntity().getEntityWorld();
+				LootTable table =  world.getLootTableManager().getLootTableFromLocation(new ResourceLocation(Wizardry.MODID, "entities/mob_additions"));
+
+				LootContext ctx = new LootContext.Builder(world).withPlayer(player).build();
+				List<ItemStack> stacks = table.generateLootForPools(world.rand, ctx);
+
+				for(ItemStack stack : stacks) {
+					event.getEntity().entityDropItem(stack, 0f);
+				}
+			}
+
 			for(ItemStack stack : WizardryUtilities.getPrioritisedHotbarAndOffhand(player)){
 
 				if(stack.getItem() instanceof IManaStoringItem && !((IManaStoringItem)stack.getItem()).isManaFull(stack)
@@ -444,7 +467,8 @@ public final class WizardryEventHandler {
 //					Wizardry.logger.info("Replaced fall distance {} with effective distance {} based on entity velocity", event.getDistance(), y);
 //				}
 
-				event.setDistance((float)y);
+				// Don't let it increase fall damage beyond vanilla values
+				if(y < event.getDistance()) event.setDistance((float)y);
 			}
 		}
 	}

src/main/java/electroblob/wizardry/block/BlockCrystalFlower.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.block;
 
+import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.registry.WizardryBlocks;
 import electroblob.wizardry.util.ParticleBuilder;
 import electroblob.wizardry.util.ParticleBuilder.Type;
@@ -56,7 +57,7 @@ public class BlockCrystalFlower extends BlockBush {
 	@SubscribeEvent
 	public static void onBonemealEvent(BonemealEvent event){
 		// Grows crystal flowers when bonemeal is used on grass
-		if(event.getBlock().getBlock() == Blocks.GRASS){
+		if(Wizardry.settings.bonemealGrowsCrystalFlowers && event.getBlock().getBlock() == Blocks.GRASS){
 
 			BlockPos pos = event.getPos().add(event.getWorld().rand.nextInt(8) - event.getWorld().rand.nextInt(8),
 					event.getWorld().rand.nextInt(4) - event.getWorld().rand.nextInt(4),

src/main/java/electroblob/wizardry/block/BlockTransportationStone.java

@@ -141,7 +141,8 @@ public class BlockTransportationStone extends Block {
 								if(locations.isEmpty()) locations.add(here);
 								else{
 									locations.remove(here); // Prevents duplicates
-									locations.set(Math.max(locations.size() - 1, 0), here);
+									if(locations.isEmpty()) locations.add(here);
+									else locations.set(Math.max(locations.size() - 1, 0), here);
 								}
 								if(!world.isRemote) player.sendStatusMessage(new TextComponentTranslation("tile." + Wizardry.MODID + ":transportation_stone.confirm", Spells.transportation.getNameForTranslationFormatted()), true);
 							}

src/main/java/electroblob/wizardry/client/ClientProxy.java

@@ -107,7 +107,7 @@ public class ClientProxy extends CommonProxy {
 	// Armour Model
 	public static final ModelBiped WIZARD_ARMOUR_MODEL = new ModelWizardArmour(0.75f);
 
-	/** The wrap width for standard multi-line descriptions (see {@link ClientProxy#addMultiLineDescription(List, String, Style)}). */
+	/** The wrap width for standard multi-line descriptions (see {@link ClientProxy#addMultiLineDescription(List, String, Style, Object...)}). */
 	private static final int TOOLTIP_WRAP_WIDTH = 140;
 
 	// SECTION Registry
@@ -190,6 +190,11 @@ public class ClientProxy extends CommonProxy {
 		}
 	}
 
+	@Override
+	public void playBlinkEffect(EntityPlayer player){
+		if(Minecraft.getMinecraft().player == player) WizardryClientEventHandler.playBlinkEffect();
+	}
+
 	@Override
 	public Set<String> getSpellHUDSkins(){
 		return GuiSpellDisplay.getSkinKeys();
@@ -282,8 +287,8 @@ public class ClientProxy extends CommonProxy {
 	}
 
 	@Override
-	public void addMultiLineDescription(List<String> tooltip, String key, Style style){
+	public void addMultiLineDescription(List<String> tooltip, String key, Style style, Object... args){
-		String description = style.getFormattingCode() + I18n.format(key);
+		String description = style.getFormattingCode() + I18n.format(key, args);
 		tooltip.addAll(Minecraft.getMinecraft().fontRenderer.listFormattedStringToWidth(description, TOOLTIP_WRAP_WIDTH));
 	}
 
@@ -429,6 +434,7 @@ public class ClientProxy extends CommonProxy {
 				if(caster instanceof ISpellCaster){
 					if(spell.isContinuous || spell instanceof None){
 						((ISpellCaster)caster).setContinuousSpell(spell);
+						((ISpellCaster)caster).setSpellCounter(spell instanceof None ? 0 : 1);
 						((EntityLiving)caster).setAttackTarget((EntityLivingBase)target);
 					}
 				}
@@ -542,7 +548,7 @@ public class ClientProxy extends CommonProxy {
 		data.randomNames = new HashMap<>();
 		data.randomDescriptions = new HashMap<>();
 
-		for(Spell spell : Spell.getSpells(Spell.allSpells)){
+		for(Spell spell : Spell.getAllSpells()){
 			// -1 because the none spell isn't included
 			// This is a case where we must use the network ID, not the metadata
 			data.randomNames.put(spell, message.names.get(spell.networkID() - 1));
@@ -569,13 +575,6 @@ public class ClientProxy extends CommonProxy {
 		GuiWizardHandbook.updateUnlockStatus(message.showToasts, message.completedAdvancements);
 	}
 
-	@Override
-	public void handleEndSlowTimePacket(PacketEndSlowTime.Message message){
-		Entity entity = Minecraft.getMinecraft().world.getEntityByID(message.hostID);
-		if(entity instanceof EntityLivingBase) PotionSlowTime.unblockNearbyEntities((EntityLivingBase)entity);
-		else Wizardry.logger.warn("Received a PacketEndSlowTime, but the entity ID did not match any living entity");
-	}
-
 	@Override
 	public void handleResurrectionPacket(PacketResurrection.Message message){
 		Entity entity = Minecraft.getMinecraft().world.getEntityByID(message.playerID);

src/main/java/electroblob/wizardry/client/WizardryClientEventHandler.java

@@ -9,6 +9,7 @@ import electroblob.wizardry.data.WizardData;
 import electroblob.wizardry.item.ISpellCastingItem;
 import electroblob.wizardry.item.ItemArtefact;
 import electroblob.wizardry.item.ItemSpectralBow;
+import electroblob.wizardry.potion.PotionSlowTime;
 import electroblob.wizardry.registry.Spells;
 import electroblob.wizardry.registry.WizardryItems;
 import electroblob.wizardry.registry.WizardryPotions;
@@ -23,11 +24,8 @@ import net.minecraft.client.renderer.OpenGlHelper;
 import net.minecraft.client.renderer.Tessellator;
 import net.minecraft.client.renderer.entity.RenderManager;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
-import net.minecraft.client.settings.KeyBinding;
 import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
-import net.minecraft.entity.SharedMonsterAttributes;
-import net.minecraft.entity.ai.attributes.AttributeModifier;
 import net.minecraft.entity.item.EntityArmorStand;
 import net.minecraft.inventory.Slot;
 import net.minecraft.item.ItemStack;
@@ -35,18 +33,17 @@ import net.minecraft.tileentity.TileEntity;
 import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.RayTraceResult;
-import net.minecraft.util.math.Vec3d;
 import net.minecraft.village.MerchantRecipe;
 import net.minecraft.world.World;
 import net.minecraftforge.client.event.*;
 import net.minecraftforge.fml.common.Mod;
-import net.minecraftforge.fml.common.ObfuscationReflectionHelper;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.TickEvent;
 import net.minecraftforge.fml.relauncher.Side;
 import org.lwjgl.opengl.GL11;
 
-import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Event handler responsible for client-side only events, mostly rendering.
@@ -71,12 +68,6 @@ public final class WizardryClientEventHandler {
 	private static int blinkEffectTimer;
 	/** The number of ticks the blink effect lasts for. */
 	private static final int BLINK_EFFECT_DURATION = 8;
-
-	private static final Method unpressKey;
-
-	static {
-		unpressKey = ObfuscationReflectionHelper.findMethod(KeyBinding.class, "func_74505_d", void.class);
-	}
 	
 	/** Starts the first person blink overlay effect. */
 	public static void playBlinkEffect(){
@@ -151,7 +142,10 @@ public final class WizardryClientEventHandler {
 
 			if(world == null) return;
 
-			for(TileEntity tileentity : world.loadedTileEntityList){
+			// Somehow this was throwing a CME, I have no idea why so I'm just going to cheat and copy the list
+			List<TileEntity> tileEntities = new ArrayList<>(world.loadedTileEntityList);
+
+			for(TileEntity tileentity : tileEntities){
 				if(tileentity instanceof TileEntityDispenser){
 					if(DispenserCastingData.get((TileEntityDispenser)tileentity) != null){
 						DispenserCastingData.get((TileEntityDispenser)tileentity).update();
@@ -160,6 +154,7 @@ public final class WizardryClientEventHandler {
 			}
 
 			SpellEmitterData.update(world);
+			PotionSlowTime.cleanUpEntities(world);
 		}
 	}
 	

src/main/java/electroblob/wizardry/client/gui/GuiArcaneWorkbench.java

@@ -31,7 +31,6 @@ import net.minecraft.inventory.Slot;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.ResourceLocation;
-import net.minecraft.util.math.MathHelper;
 import net.minecraft.util.text.TextFormatting;
 import net.minecraftforge.client.event.TextureStitchEvent;
 import net.minecraftforge.fml.common.Mod;

src/main/java/electroblob/wizardry/client/model/ModelWizardArmour.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.client.model;
 
+import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.block.BlockStatue;
 import net.minecraft.client.model.ModelRenderer;
 import net.minecraft.entity.Entity;
@@ -13,6 +14,7 @@ public class ModelWizardArmour extends ModelArmourFixer {
 	ModelRenderer hatSegment4;
 	ModelRenderer hatSegment5;
 	ModelRenderer hatSegment6;
+	ModelRenderer hatBobble;
 	ModelRenderer robe;
 
 	public ModelWizardArmour(float delta){
@@ -75,6 +77,13 @@ public class ModelWizardArmour extends ModelArmourFixer {
 		hatSegment6.mirror = true;
 		setRotation(hatSegment6, -0.5585054F, 0F, 0F);
 
+		hatBobble = new ModelRenderer(this, 52, 47);
+		hatBobble.addBox(0F, 0F, 0F, 3, 3, 3);
+		hatBobble.setRotationPoint(-1.5F, -15.1F, 4F);
+		hatBobble.setTextureSize(64, 64);
+		hatBobble.mirror = true;
+		setRotation(hatBobble, -0.65F, 0F, 0F);
+
 		bipedBody = new ModelRenderer(this, 16, 16);
 		bipedBody.addBox(-4F, 0F, -2F, 8, 11, 4, delta);
 		bipedBody.setRotationPoint(0F, 0F, 0F);
@@ -97,6 +106,7 @@ public class ModelWizardArmour extends ModelArmourFixer {
 		bipedHead.addChild(hatSegment4);
 		bipedHead.addChild(hatSegment5);
 		bipedHead.addChild(hatSegment6);
+		bipedHead.addChild(hatBobble);
 	}
 
 	public void render(Entity entity, float f, float f1, float f2, float f3, float f4, float f5){
@@ -129,6 +139,8 @@ public class ModelWizardArmour extends ModelArmourFixer {
 		this.robe.rotateAngleX = (this.bipedLeftLeg.rotateAngleX + this.bipedRightLeg.rotateAngleX) / 2f;
 		this.robe.rotateAngleY = this.bipedBody.rotateAngleY;
 		this.robe.rotateAngleZ = (this.bipedLeftLeg.rotateAngleZ + this.bipedRightLeg.rotateAngleZ) / 2f;
+
+		this.hatBobble.showModel = Wizardry.tisTheSeason;
 	}
 
 }

src/main/java/electroblob/wizardry/client/model/WizardryModels.java

@@ -67,10 +67,10 @@ public final class WizardryModels {
 
 		registerMultiTexturedModel((ItemCrystal)WizardryItems.magic_crystal);
 
-		registerItemModel(WizardryItems.magic_wand);
+		registerWandModel(WizardryItems.magic_wand);
-		registerItemModel(WizardryItems.apprentice_wand);
+		registerWandModel(WizardryItems.apprentice_wand);
-		registerItemModel(WizardryItems.advanced_wand);
+		registerWandModel(WizardryItems.advanced_wand);
-		registerItemModel(WizardryItems.master_wand);
+		registerWandModel(WizardryItems.master_wand);
 
 		registerItemModel(WizardryItems.spell_book);
 		// Wildcard registered for wizard trades.
@@ -78,37 +78,37 @@ public final class WizardryModels {
 		registerItemModel(WizardryItems.arcane_tome);
 		registerItemModel(WizardryItems.wizard_handbook);
 
-		registerItemModel(WizardryItems.novice_fire_wand);
+		registerWandModel(WizardryItems.novice_fire_wand);
-		registerItemModel(WizardryItems.novice_ice_wand);
+		registerWandModel(WizardryItems.novice_ice_wand);
-		registerItemModel(WizardryItems.novice_lightning_wand);
+		registerWandModel(WizardryItems.novice_lightning_wand);
-		registerItemModel(WizardryItems.novice_necromancy_wand);
+		registerWandModel(WizardryItems.novice_necromancy_wand);
-		registerItemModel(WizardryItems.novice_earth_wand);
+		registerWandModel(WizardryItems.novice_earth_wand);
-		registerItemModel(WizardryItems.novice_sorcery_wand);
+		registerWandModel(WizardryItems.novice_sorcery_wand);
-		registerItemModel(WizardryItems.novice_healing_wand);
+		registerWandModel(WizardryItems.novice_healing_wand);
 
-		registerItemModel(WizardryItems.apprentice_fire_wand);
+		registerWandModel(WizardryItems.apprentice_fire_wand);
-		registerItemModel(WizardryItems.apprentice_ice_wand);
+		registerWandModel(WizardryItems.apprentice_ice_wand);
-		registerItemModel(WizardryItems.apprentice_lightning_wand);
+		registerWandModel(WizardryItems.apprentice_lightning_wand);
-		registerItemModel(WizardryItems.apprentice_necromancy_wand);
+		registerWandModel(WizardryItems.apprentice_necromancy_wand);
-		registerItemModel(WizardryItems.apprentice_earth_wand);
+		registerWandModel(WizardryItems.apprentice_earth_wand);
-		registerItemModel(WizardryItems.apprentice_sorcery_wand);
+		registerWandModel(WizardryItems.apprentice_sorcery_wand);
-		registerItemModel(WizardryItems.apprentice_healing_wand);
+		registerWandModel(WizardryItems.apprentice_healing_wand);
 
-		registerItemModel(WizardryItems.advanced_fire_wand);
+		registerWandModel(WizardryItems.advanced_fire_wand);
-		registerItemModel(WizardryItems.advanced_ice_wand);
+		registerWandModel(WizardryItems.advanced_ice_wand);
-		registerItemModel(WizardryItems.advanced_lightning_wand);
+		registerWandModel(WizardryItems.advanced_lightning_wand);
-		registerItemModel(WizardryItems.advanced_necromancy_wand);
+		registerWandModel(WizardryItems.advanced_necromancy_wand);
-		registerItemModel(WizardryItems.advanced_earth_wand);
+		registerWandModel(WizardryItems.advanced_earth_wand);
-		registerItemModel(WizardryItems.advanced_sorcery_wand);
+		registerWandModel(WizardryItems.advanced_sorcery_wand);
-		registerItemModel(WizardryItems.advanced_healing_wand);
+		registerWandModel(WizardryItems.advanced_healing_wand);
 
-		registerItemModel(WizardryItems.master_fire_wand);
+		registerWandModel(WizardryItems.master_fire_wand);
-		registerItemModel(WizardryItems.master_ice_wand);
+		registerWandModel(WizardryItems.master_ice_wand);
-		registerItemModel(WizardryItems.master_lightning_wand);
+		registerWandModel(WizardryItems.master_lightning_wand);
-		registerItemModel(WizardryItems.master_necromancy_wand);
+		registerWandModel(WizardryItems.master_necromancy_wand);
-		registerItemModel(WizardryItems.master_earth_wand);
+		registerWandModel(WizardryItems.master_earth_wand);
-		registerItemModel(WizardryItems.master_sorcery_wand);
+		registerWandModel(WizardryItems.master_sorcery_wand);
-		registerItemModel(WizardryItems.master_healing_wand);
+		registerWandModel(WizardryItems.master_healing_wand);
 
 		registerItemModel(WizardryItems.spectral_sword);
 		registerItemModel(WizardryItems.spectral_pickaxe);
@@ -303,6 +303,23 @@ public final class WizardryModels {
 		// Assigns the model for all metadata values
 		ModelLoader.setCustomMeshDefinition(item, s -> new ModelResourceLocation(item.getRegistryName(), "inventory"));
 	}
+
+	/**
+	 * Registers a wand model, using the item's registry name as the model name (this convention makes it easier to
+	 * keep track of everything).
+	 */
+	private static void registerWandModel(Item item){
+
+		if(Wizardry.tisTheSeason){
+			// Changing the last parameter from null to "inventory" fixed the item/block model weirdness. No idea why!
+			ModelBakery.registerItemVariants(item, new ModelResourceLocation("ebwizardry:festive_wand", "inventory"));
+			// Assigns the model for all metadata values
+			ModelLoader.setCustomMeshDefinition(item, s -> new ModelResourceLocation("ebwizardry:festive_wand", "inventory"));
+		}else{
+			registerItemModel(item);
+		}
+
+	}
 	
 	/**
 	 * Registers an item model, using the itemstack-sensitive {@link IMultiTexturedItem#getModelName(ItemStack)} as the

src/main/java/electroblob/wizardry/client/particle/ParticleWizardry.java

@@ -525,30 +525,42 @@ public abstract class ParticleWizardry extends Particle {
 
 
 	// =============================================== Helper Methods ===============================================
-	
+
+	/** Internal overload for {@link ParticleWizardry#generateTextures(String, String, int)} which uses wizardry's mod
+	 * ID automatically. */
+	public static ResourceLocation[] generateTextures(String stem, int n){
+		return generateTextures(Wizardry.MODID, stem, n);
+	}
+
 	/** Static helper method that generates an array of n ResourceLocations using the particle file naming convention,
 	 * which is the given stem plus an underscore plus the integer index. */
-	public static ResourceLocation[] generateTextures(String stem, int n){
+	public static ResourceLocation[] generateTextures(String modID, String stem, int n){
 
 		ResourceLocation[] textures = new ResourceLocation[n];
 		
 		for(int i=0; i<n; i++){
-			textures[i] = new ResourceLocation(Wizardry.MODID, "particle/" + stem + "_" + i);
+			textures[i] = new ResourceLocation(modID, "particle/" + stem + "_" + i);
 		}
 		
 		return textures;
 	}
+
+	/** Internal overload for {@link ParticleWizardry#generateTextures(String, String, int, int)} which uses wizardry's
+	 * mod ID automatically. */
+	public static ResourceLocation[][] generateTextures(String stem, int m, int n){
+		return generateTextures(Wizardry.MODID, stem, m, n);
+	}
 	
 	/** Static helper method that generates a 2D m x n array of ResourceLocations using the particle file naming
 	 * convention, which is the given stem plus an underscore plus the first index, plus an underscore plus the second
 	 * index. Useful for animated particles that also pick a random animation strip. */
-	public static ResourceLocation[][] generateTextures(String stem, int m, int n){
+	public static ResourceLocation[][] generateTextures(String modID, String stem, int m, int n){
 
 		ResourceLocation[][] textures = new ResourceLocation[m][n];
 		
 		for(int i=0; i<m; i++){
 			for(int j=0; j<n; j++){
-				textures[i][j] = new ResourceLocation(Wizardry.MODID, "particle/" + stem + "_" + i + "_" + j);
+				textures[i][j] = new ResourceLocation(modID, "particle/" + stem + "_" + i + "_" + j);
 			}
 		}
 		

src/main/java/electroblob/wizardry/client/renderer/LayerFrost.java

@@ -112,7 +112,7 @@ public class LayerFrost implements LayerRenderer<EntityLivingBase> {
 		double scaleX = 1, scaleY = 1;
 		// It's more logical to use the model's texture size, but some classes don't bother setting it properly
 		// (e.g. ModelVillager), so to get the correct dimensions I'm getting them from the first box instead.
-		if(model.boxList != null && model.boxList.get(0) != null){
+		if(model.boxList != null && model.boxList.size() >= 1 && model.boxList.get(0) != null){
 			scaleX = (double)model.boxList.get(0).textureWidth / 16d;
 			scaleY = (double)model.boxList.get(0).textureHeight / 16d;
 		}else{ // Fallback to model fields; should never be needed
@@ -121,11 +121,26 @@ public class LayerFrost implements LayerRenderer<EntityLivingBase> {
 		}
 		GlStateManager.scale(scaleX, scaleY, 1);
 		GlStateManager.matrixMode(GL11.GL_MODELVIEW);
-		
+
+		boolean headWearHidden = false;
+		boolean bodyWearHidden = false;
+		boolean leftArmWearHidden = false;
+		boolean rightArmWearHidden = false;
+		boolean leftLegWearHidden = false;
+		boolean rightLegWearHidden = false;
+
 		// Hides the hat layer for bipeds
-		if(this.model instanceof ModelBiped) ((ModelBiped)this.model).bipedHeadwear.isHidden = true;
+		if(this.model instanceof ModelBiped){
+			headWearHidden = ((ModelBiped)this.model).bipedHeadwear.isHidden;
+			((ModelBiped)this.model).bipedHeadwear.isHidden = true;
+		}
 
 		if(this.model instanceof ModelPlayer){
+			bodyWearHidden = ((ModelPlayer)this.model).bipedBodyWear.isHidden;
+			leftArmWearHidden = ((ModelPlayer)this.model).bipedLeftArmwear.isHidden;
+			rightArmWearHidden = ((ModelPlayer)this.model).bipedRightArmwear.isHidden;
+			leftLegWearHidden = ((ModelPlayer)this.model).bipedLeftLegwear.isHidden;
+			rightLegWearHidden = ((ModelPlayer)this.model).bipedRightLegwear.isHidden;
 			((ModelPlayer)this.model).bipedBodyWear.isHidden = true;
 			((ModelPlayer)this.model).bipedLeftArmwear.isHidden = true;
 			((ModelPlayer)this.model).bipedRightArmwear.isHidden = true;
@@ -136,7 +151,15 @@ public class LayerFrost implements LayerRenderer<EntityLivingBase> {
 		this.model.setLivingAnimations(entity, limbSwing, limbSwingAmount, partialTicks);
 		this.model.render(entity, limbSwing, limbSwingAmount, ageInTicks, netHeadYaw, headPitch, scale);
 
-		if(this.model instanceof ModelBiped) ((ModelBiped)this.model).bipedHeadwear.isHidden = false;
+		if(this.model instanceof ModelBiped) ((ModelBiped)this.model).bipedHeadwear.isHidden = headWearHidden;
+
+		if(this.model instanceof ModelPlayer){
+			((ModelPlayer)this.model).bipedBodyWear.isHidden = bodyWearHidden;
+			((ModelPlayer)this.model).bipedLeftArmwear.isHidden = leftArmWearHidden;
+			((ModelPlayer)this.model).bipedRightArmwear.isHidden = rightArmWearHidden;
+			((ModelPlayer)this.model).bipedLeftLegwear.isHidden = leftLegWearHidden;
+			((ModelPlayer)this.model).bipedRightLegwear.isHidden = rightLegWearHidden;
+		}
 
 		// Undoes the texture scaling
 		GlStateManager.matrixMode(GL11.GL_TEXTURE);

src/main/java/electroblob/wizardry/client/renderer/RenderArcaneLock.java

@@ -42,6 +42,7 @@ public class RenderArcaneLock {
 
 		GlStateManager.pushMatrix();
 		GlStateManager.enableBlend();
+		boolean lighting = GL11.glIsEnabled(GL11.GL_LIGHTING);
 		GlStateManager.disableLighting();
 		OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240, 240);
 		GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
@@ -62,6 +63,8 @@ public class RenderArcaneLock {
 		List<TileEntity> tileentities = new ArrayList<>(world.loadedTileEntityList);
 
 		for(TileEntity tileentity : tileentities){
+			
+			if(tileentity == null) continue; // What the heck VoxelMap
 
 			if(tileentity.getDistanceSq(origin.x, origin.y, origin.z) <= tileentity.getMaxRenderDistanceSquared()
 					&& tileentity.getTileData().hasUniqueId(ArcaneLock.NBT_KEY)){
@@ -82,7 +85,9 @@ public class RenderArcaneLock {
 
 		GlStateManager.disableBlend();
 		GlStateManager.enableTexture2D();
-		GlStateManager.enableLighting();
+		if (lighting) {
+			GlStateManager.enableLighting();
+		}
 		GlStateManager.disableRescaleNormal();
 		GlStateManager.popMatrix();
 	}

src/main/java/electroblob/wizardry/client/renderer/RenderBlackHole.java

@@ -53,9 +53,8 @@ public class RenderBlackHole extends Render<EntityBlackHole> {
 					(float)blackhole.ticksExisted / 10);
 		}
 		if(blackhole.ticksExisted > blackhole.lifetime - 10){
-			GlStateManager.scale((float)(blackhole.lifetime - blackhole.ticksExisted) / 10,
+			float scale = Math.max(0, (float)(blackhole.lifetime - blackhole.ticksExisted) / 10);
-					(float)(blackhole.lifetime - blackhole.ticksExisted) / 10,
+			GlStateManager.scale(scale, scale, scale);
-					(float)(blackhole.lifetime - blackhole.ticksExisted) / 10);
 		}
 
 		this.bindTexture(texture);

src/main/java/electroblob/wizardry/command/CommandCastSpell.java

@@ -190,7 +190,8 @@ public class CommandCastSpell extends CommandBase {
 				}
 
 				if(spell.isContinuous){
-
+					// We need not query Spell#canBeCastByDispensers since with commands there's no difference between
+					// a spell that can't be cast positionally and one that can be cast positionally but fails
 					if(spell.cast(world, origin.x, origin.y, origin.z, direction, 0, duration, modifiers)){
 
 						MinecraftForge.EVENT_BUS.post(new SpellCastEvent.Post(Source.COMMAND, spell, world, origin.x, origin.y, origin.z, direction, modifiers));

src/main/java/electroblob/wizardry/command/CommandDiscoverSpell.java

@@ -113,7 +113,7 @@ public class CommandDiscoverSpell extends CommandBase {
 					if(server.sendCommandFeedback()) sender.sendMessage(
 							new TextComponentTranslation("commands." + Wizardry.MODID + ":discoverspell.clear", player.getName()));
 				}else if(all){
-					data.spellsDiscovered.addAll(Spell.getSpells(Spell.allSpells));
+					data.spellsDiscovered.addAll(Spell.getAllSpells());
 					if(server.sendCommandFeedback()) sender.sendMessage(
 							new TextComponentTranslation("commands." + Wizardry.MODID + ":discoverspell.all", player.getName()));
 				}else{

src/main/java/electroblob/wizardry/command/SpellEmitter.java

@@ -4,6 +4,7 @@ import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.data.SpellEmitterData;
 import electroblob.wizardry.event.SpellCastEvent;
 import electroblob.wizardry.spell.Spell;
+import electroblob.wizardry.util.NBTExtras;
 import electroblob.wizardry.util.SpellModifiers;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.nbt.NBTTagCompound;
@@ -129,7 +130,7 @@ public class SpellEmitter implements ITickable {
 		nbt.setDouble("z", z);
 		nbt.setInteger("direction", direction.getIndex());
 		nbt.setInteger("duration", duration);
-		nbt.setTag("modifiers", modifiers.toNBT());
+		NBTExtras.storeTagSafely(nbt, "modifiers", modifiers.toNBT());
 		nbt.setInteger("castingTick", castingTick);
 
 		return nbt;

src/main/java/electroblob/wizardry/data/BlockCastingData.java

@@ -7,6 +7,7 @@ import electroblob.wizardry.packet.WizardryPacketHandler;
 import electroblob.wizardry.registry.Spells;
 import electroblob.wizardry.spell.None;
 import electroblob.wizardry.spell.Spell;
+import electroblob.wizardry.util.NBTExtras;
 import electroblob.wizardry.util.SpellModifiers;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
@@ -141,7 +142,7 @@ public abstract class BlockCastingData<T extends TileEntity> implements INBTSeri
 
 		nbt.setInteger("spell", spell.metadata());
 		nbt.setInteger("castingTick", castingTick);
-		nbt.setTag("modifiers", modifiers.toNBT());
+		NBTExtras.storeTagSafely(nbt, "modifiers", modifiers.toNBT());
 
 		return nbt;
 	}

src/main/java/electroblob/wizardry/data/DispenserCastingData.java

@@ -166,7 +166,10 @@ public class DispenserCastingData extends BlockCastingData<TileEntityDispenser>
 			// This will fire once for each dimension, but since we want dispenser-casting to work in all dimensions,
 			// this is correct (the loaded tile entity list will of course be different in each case.
 
-			for(TileEntity tileentity : event.world.loadedTileEntityList){
+			// Somehow this was throwing a CME, I have no idea why so I'm just going to cheat and copy the list
+			List<TileEntity> tileEntities = new ArrayList<>(event.world.loadedTileEntityList);
+
+			for(TileEntity tileentity : tileEntities){
 				if(tileentity instanceof TileEntityDispenser){
 					if(DispenserCastingData.get((TileEntityDispenser)tileentity) != null){
 						DispenserCastingData.get((TileEntityDispenser)tileentity).update();

src/main/java/electroblob/wizardry/data/IStoredVariable.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.data;
 
+import electroblob.wizardry.util.NBTExtras;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
@@ -89,7 +90,7 @@ public interface IStoredVariable<T> extends IVariable<T> {
 
 		@Override
 		public void write(NBTTagCompound nbt, T value){
-			if(value != null) nbt.setTag(key, serialiser.apply(value));
+			if(value != null) NBTExtras.storeTagSafely(nbt, key, serialiser.apply(value));
 		}
 
 		@Override

src/main/java/electroblob/wizardry/data/SpellEmitterData.java

@@ -91,7 +91,7 @@ public class SpellEmitterData extends WorldSavedData {
 
 	@Override
 	public NBTTagCompound writeToNBT(NBTTagCompound compound){
-		compound.setTag("emitters", NBTExtras.listToNBT(emitters, SpellEmitter::toNBT));
+		NBTExtras.storeTagSafely(compound, "emitters", NBTExtras.listToNBT(emitters, SpellEmitter::toNBT));
 		return compound;
 	}
 

src/main/java/electroblob/wizardry/data/SpellGlyphData.java

@@ -4,6 +4,7 @@ import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.packet.PacketGlyphData;
 import electroblob.wizardry.packet.WizardryPacketHandler;
 import electroblob.wizardry.spell.Spell;
+import electroblob.wizardry.util.NBTExtras;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.nbt.NBTTagList;
@@ -43,11 +44,11 @@ public class SpellGlyphData extends WorldSavedData {
 	/** Generates random names and descriptions for any spells which don't already have them. */
 	public void generateGlyphNames(World world){
 
-		for(Spell spell : Spell.getSpells(Spell.allSpells)){
+		for(Spell spell : Spell.getAllSpells()){
 			if(!randomNames.containsKey(spell)) randomNames.put(spell, generateRandomName(world.rand));
 		}
 
-		for(Spell spell : Spell.getSpells(Spell.allSpells)){
+		for(Spell spell : Spell.getAllSpells()){
 			if(!randomDescriptions.containsKey(spell))
 				randomDescriptions.put(spell, generateRandomDescription(world.rand));
 		}
@@ -161,7 +162,7 @@ public class SpellGlyphData extends WorldSavedData {
 
 		NBTTagList tagList = new NBTTagList();
 
-		for(Spell spell : Spell.getSpells(Spell.allSpells)){
+		for(Spell spell : Spell.getAllSpells()){
 			// Much like the enchantments tag for items, this stores a list of spell-id-to-name tag pairs
 			// The description is now also included; there's no point in making a second compound tag!
 			NBTTagCompound tag = new NBTTagCompound();
@@ -171,7 +172,7 @@ public class SpellGlyphData extends WorldSavedData {
 			tagList.appendTag(tag);
 		}
 
-		nbt.setTag("spellGlyphData", tagList);
+		NBTExtras.storeTagSafely(nbt, "spellGlyphData", tagList);
 
 		return nbt;
 	}

src/main/java/electroblob/wizardry/data/WizardData.java

@@ -515,12 +515,12 @@ public class WizardData implements INBTSerializable<NBTTagCompound> {
 
 		NBTTagCompound properties = new NBTTagCompound();
 
-		properties.setTag("imbuements", NBTExtras.mapToNBT(this.imbuementDurations,
+		NBTExtras.storeTagSafely(properties, "imbuements", NBTExtras.mapToNBT(this.imbuementDurations,
 				imbuement -> new NBTTagInt(Enchantment.getEnchantmentID((Enchantment)imbuement)), NBTTagInt::new));
 
 		// Mmmmmm Java 8....
-		properties.setTag("allies", NBTExtras.listToNBT(this.allies, NBTUtil::createUUIDTag));
+		NBTExtras.storeTagSafely(properties, "allies", NBTExtras.listToNBT(this.allies, NBTUtil::createUUIDTag));
-		properties.setTag("allyNames", NBTExtras.listToNBT(this.allyNames, NBTTagString::new));
+		NBTExtras.storeTagSafely(properties, "allyNames", NBTExtras.listToNBT(this.allyNames, NBTTagString::new));
 
 		// Might be worth converting this over to WizardryUtilities.listToNBT.
 		int[] spells = new int[this.spellsDiscovered.size()];
@@ -531,7 +531,7 @@ public class WizardData implements INBTSerializable<NBTTagCompound> {
 		}
 		properties.setIntArray("discoveredSpells", spells);
 
-		properties.setTag("recentSpells", NBTExtras.listToNBT(recentSpells, s -> new NBTTagInt(s.metadata())));
+		NBTExtras.storeTagSafely(properties, "recentSpells", NBTExtras.listToNBT(recentSpells, s -> new NBTTagInt(s.metadata())));
 
 		storedVariables.forEach(k -> k.write(properties, this.spellData.get(k)));
 

src/main/java/electroblob/wizardry/entity/EntityLevitatingBlock.java

@@ -5,6 +5,7 @@ import electroblob.wizardry.registry.Spells;
 import electroblob.wizardry.spell.Spell;
 import electroblob.wizardry.util.AllyDesignationSystem;
 import electroblob.wizardry.util.MagicDamage;
+import electroblob.wizardry.util.NBTExtras;
 import electroblob.wizardry.util.WizardryUtilities;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.block.Block;
@@ -183,7 +184,7 @@ public class EntityLevitatingBlock extends EntityFallingBlock implements IEntity
 												NBTBase nbtbase = this.tileEntityData.getTag(s);
 
 												if(!"x".equals(s) && !"y".equals(s) && !"z".equals(s)){
-													nbttagcompound.setTag(s, nbtbase.copy());
+													NBTExtras.storeTagSafely(nbttagcompound, s, nbtbase.copy());
 												}
 											}
 

src/main/java/electroblob/wizardry/entity/construct/EntityBubble.java

@@ -65,7 +65,7 @@ public class EntityBubble extends EntityMagicConstruct {
 		if(isDarkOrb){
 
 			if(WizardryUtilities.getRider(this) != null
-					&& this.ticksExisted % Spells.entrapment.getProperty(Entrapment.DAMAGE_INTERVAL).intValue() == 0){
+					&& WizardryUtilities.getRider(this).ticksExisted % Spells.entrapment.getProperty(Entrapment.DAMAGE_INTERVAL).intValue() == 0){
 				if(this.getCaster() != null){
 					WizardryUtilities.getRider(this).attackEntityFrom(
 							MagicDamage.causeIndirectMagicDamage(this, getCaster(), DamageType.MAGIC),

src/main/java/electroblob/wizardry/entity/construct/EntityCombustionRune.java

@@ -1,6 +1,5 @@
 package electroblob.wizardry.entity.construct;
 
-import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.registry.Spells;
 import electroblob.wizardry.spell.Spell;
 import electroblob.wizardry.util.WizardryUtilities;

src/main/java/electroblob/wizardry/entity/construct/EntityHammer.java

@@ -80,8 +80,8 @@ public class EntityHammer extends EntityMagicConstruct {
 
 		if(this.world.isRemote && this.ticksExisted % 3 == 0){
 			ParticleBuilder.create(Type.SPARK)
-			.pos(this.posX - 0.5d + rand.nextDouble(), this.posY + 2 * rand.nextDouble(), this.posZ - 0.5d + rand.nextDouble())
+					.pos(this.posX - 0.5d + rand.nextDouble(), this.posY + 2 * rand.nextDouble(), this.posZ - 0.5d + rand.nextDouble())
-			.spawn(world);
+					.spawn(world);
 		}
 
 		this.prevPosX = this.posX;
@@ -103,39 +103,37 @@ public class EntityHammer extends EntityMagicConstruct {
 			this.rotationPitch = 0;
 			this.spin = false;
 
-			if(this.ticksExisted % Spells.lightning_hammer.getProperty(LightningHammer.ATTACK_INTERVAL).floatValue() == 0){
+			double seekerRange = Spells.lightning_hammer.getProperty(Spell.EFFECT_RADIUS).doubleValue();
 
-				double seekerRange = Spells.lightning_hammer.getProperty(Spell.EFFECT_RADIUS).doubleValue();
+			List<EntityLivingBase> targets = WizardryUtilities.getEntitiesWithinRadius(seekerRange, this.posX,
+					this.posY + 1, this.posZ, world);
 
-				List<EntityLivingBase> targets = WizardryUtilities.getEntitiesWithinRadius(seekerRange, this.posX,
+			int maxTargets = Spells.lightning_hammer.getProperty(LightningHammer.SECONDARY_MAX_TARGETS).intValue();
-						this.posY + 1, this.posZ, world);
+			while(targets.size() > maxTargets) targets.remove(targets.size() - 1);
 
-				int maxTargets = Spells.lightning_hammer.getProperty(LightningHammer.SECONDARY_MAX_TARGETS).intValue();
+			for(EntityLivingBase target : targets){
-				while(targets.size() > maxTargets) targets.remove(targets.size() - 1);
 
-				for(EntityLivingBase target : targets){
+				if(WizardryUtilities.isLiving(target) && this.isValidTarget(target)
+						&& target.ticksExisted % Spells.lightning_hammer.getProperty(LightningHammer.ATTACK_INTERVAL).floatValue() == 0){
 
-					if(WizardryUtilities.isLiving(target) && this.isValidTarget(target)){
+					if(world.isRemote){
 
-						if(world.isRemote){
+						ParticleBuilder.create(Type.LIGHTNING).pos(posX, posY + height - 0.1, posZ) .target(target).spawn(world);
 
-							ParticleBuilder.create(Type.LIGHTNING).pos(posX, posY + height - 0.1, posZ) .target(target).spawn(world);
+						ParticleBuilder.spawnShockParticles(world, target.posX,
+								target.getEntityBoundingBox().minY + target.height, target.posZ);
+					}
 
-							ParticleBuilder.spawnShockParticles(world, target.posX,
+					target.playSound(WizardrySounds.ENTITY_HAMMER_ATTACK, 1.0F, rand.nextFloat() * 0.4F + 1.5F);
-									target.getEntityBoundingBox().minY + target.height, target.posZ);
-						}
 
-						target.playSound(WizardrySounds.ENTITY_HAMMER_ATTACK, 1.0F, rand.nextFloat() * 0.4F + 1.5F);
+					float damage = Spells.lightning_hammer.getProperty(Spell.SPLASH_DAMAGE).floatValue() * damageMultiplier;
 
-						float damage = Spells.lightning_hammer.getProperty(Spell.SPLASH_DAMAGE).floatValue() * damageMultiplier;
+					if(this.getCaster() != null){
-
+						WizardryUtilities.attackEntityWithoutKnockback(target, MagicDamage.causeIndirectMagicDamage(
-						if(this.getCaster() != null){
+								this, getCaster(), DamageType.SHOCK), damage);
-							WizardryUtilities.attackEntityWithoutKnockback(target, MagicDamage.causeIndirectMagicDamage(
+						WizardryUtilities.applyStandardKnockback(this, target);
-									this, getCaster(), DamageType.SHOCK), damage);
+					}else{
-							WizardryUtilities.applyStandardKnockback(this, target);
+						target.attackEntityFrom(DamageSource.MAGIC, damage);
-						}else{
-							target.attackEntityFrom(DamageSource.MAGIC, damage);
-						}
 					}
 				}
 			}

src/main/java/electroblob/wizardry/entity/construct/EntityHealAura.java

@@ -62,7 +62,7 @@ public class EntityHealAura extends EntityMagicConstruct {
 						target.motionZ = velZ;
 					}
 
-				}else if(target.getHealth() < target.getMaxHealth() && this.ticksExisted % 5 == 0){
+				}else if(target.getHealth() < target.getMaxHealth() && target.ticksExisted % 5 == 0){
 					target.heal(Spells.healing_aura.getProperty(Spell.HEALTH).floatValue() * damageMultiplier);
 				}
 			}

src/main/java/electroblob/wizardry/entity/construct/EntityIceSpike.java

@@ -29,9 +29,9 @@ public class EntityIceSpike extends EntityMagicConstruct {
 		this.setRotation(-facing.getHorizontalAngle(), WizardryUtilities.getPitch(facing));
 		float yaw = (-facing.getHorizontalAngle()) * (float)Math.PI/180;
 		float pitch = (WizardryUtilities.getPitch(facing) - 90) * (float)Math.PI/180;
-		Vec3d min = new Vec3d(-width/2, 0, -width/2).rotatePitch(pitch).rotateYaw(yaw);
+		Vec3d min = this.getPositionVector().add(new Vec3d(-width/2, 0, -width/2).rotatePitch(pitch).rotateYaw(yaw));
-		Vec3d max = new Vec3d(width/2, height, width/2).rotatePitch(pitch).rotateYaw(yaw);
+		Vec3d max = this.getPositionVector().add(new Vec3d(width/2, height, width/2).rotatePitch(pitch).rotateYaw(yaw));
-		this.setEntityBoundingBox(new AxisAlignedBB(this.getPositionVector().add(min), this.getPositionVector().add(max)));
+		this.setEntityBoundingBox(new AxisAlignedBB(min.x, min.y, min.z, max.x, max.y, max.z));
 	}
 
 	public EnumFacing getFacing(){

src/main/java/electroblob/wizardry/entity/living/EntityAIAttackSpell.java

@@ -213,6 +213,7 @@ public class EntityAIAttackSpell<T extends EntityLiving & ISpellCaster> extends
 			return false;
 		}
 
+		// This is only called when spell casting starts so ticksInUse is always zero
 		if(spell.cast(attacker.world, attacker, EnumHand.MAIN_HAND, 0, target, modifiers)){
 
 			if(spell.isContinuous){

src/main/java/electroblob/wizardry/entity/living/EntityEvilWizard.java

@@ -74,6 +74,7 @@ public class EntityEvilWizard extends EntityMob implements ISpellCaster, IEntity
 	// Field implementations
 	private List<Spell> spells = new ArrayList<Spell>(4);
 	private Spell continuousSpell;
+	private int spellCounter;
 
 	public EntityEvilWizard(World world){
 
@@ -175,6 +176,16 @@ public class EntityEvilWizard extends EntityMob implements ISpellCaster, IEntity
 	public Spell getContinuousSpell(){
 		return this.continuousSpell;
 	}
+
+	@Override
+	public void setSpellCounter(int count){
+		spellCounter = count;
+	}
+
+	@Override
+	public int getSpellCounter(){
+		return spellCounter;
+	}
 	
 	@Override
 	public int getAimingError(EnumDifficulty difficulty){
@@ -252,7 +263,7 @@ public class EntityEvilWizard extends EntityMob implements ISpellCaster, IEntity
 		// When right-clicked with a spell book in creative, sets one of the spells to that spell
 		if(player.isCreative() && stack.getItem() instanceof ItemSpellBook){
 			Spell spell = Spell.byMetadata(stack.getItemDamage());
-			if(this.spells.size() >= 4 && spell.canBeCastByNPCs()){
+			if(this.spells.size() >= 4 && spell.canBeCastBy(this, true)){
 				// The set(...) method returns the element that was replaced - neat!
 				player.sendMessage(new TextComponentTranslation("item." + Wizardry.MODID + ":spell_book.apply_to_wizard",
 						this.getDisplayName(), this.spells.set(rand.nextInt(3) + 1, spell).getNameForTranslationFormatted(),
@@ -269,9 +280,9 @@ public class EntityEvilWizard extends EntityMob implements ISpellCaster, IEntity
 		super.writeEntityToNBT(nbt);
 		nbt.setInteger("element", this.getElement().ordinal());
 		nbt.setInteger("skin", this.textureIndex);
-		nbt.setTag("spells", NBTExtras.listToNBT(spells, spell -> new NBTTagInt(spell.metadata())));
+		NBTExtras.storeTagSafely(nbt, "spells", NBTExtras.listToNBT(spells, spell -> new NBTTagInt(spell.metadata())));
 		nbt.setBoolean("hasStructure", this.hasStructure);
-		nbt.setTag("groupUUIDs", NBTExtras.listToNBT(groupUUIDs, NBTUtil::createUUIDTag));
+		NBTExtras.storeTagSafely(nbt, "groupUUIDs", NBTExtras.listToNBT(groupUUIDs, NBTUtil::createUUIDTag));
 	}
 
 	@Override
@@ -369,7 +380,7 @@ public class EntityEvilWizard extends EntityMob implements ISpellCaster, IEntity
 		// All wizards know magic missile, even if it is disabled.
 		spells.add(Spells.magic_missile);
 
-		Tier maxTier = EntityWizard.populateSpells(spells, element, hasStructure, 3, rand);
+		Tier maxTier = EntityWizard.populateSpells(this, spells, element, hasStructure, 3, rand);
 
 		// Now done after the spells so it can take the tier into account. For evil wizards this is slightly different;
 		// it picks a random wand which is at least a high enough tier for the spells the wizard has.

src/main/java/electroblob/wizardry/entity/living/EntityIceGiant.java

@@ -52,7 +52,7 @@ public class EntityIceGiant extends EntityIronGolem implements ISummonedCreature
 		this.tasks.addTask(6, new EntityAIWatchClosest(this, EntityPlayer.class, 6.0F));
 		this.tasks.addTask(7, new EntityAILookIdle(this));
 		this.targetTasks.addTask(1, new EntityAIHurtByTarget(this, false));
-		this.targetTasks.addTask(2, new EntityAINearestAttackableTarget<EntityLivingBase>(this, EntityLivingBase.class,
+		this.targetTasks.addTask(2, new EntityAINearestAttackableTarget<>(this, EntityLivingBase.class,
 				0, false, true, this.getTargetSelector()));
 	}
 

src/main/java/electroblob/wizardry/entity/living/EntityLightningWraith.java

@@ -19,9 +19,6 @@ import net.minecraftforge.fml.common.eventhandler.Event;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import org.apache.commons.lang3.ArrayUtils;
 
-import java.util.Arrays;
-import java.util.function.IntPredicate;
-
 @Mod.EventBusSubscriber
 public class EntityLightningWraith extends EntityBlazeMinion {
 

src/main/java/electroblob/wizardry/entity/living/EntityPhoenix.java

@@ -30,6 +30,7 @@ public class EntityPhoenix extends EntitySummonedCreature implements ISpellCaste
 	private EntityAIAttackSpell<EntityPhoenix> spellAttackAI = new EntityAIAttackSpell<>(this, AISpeed, 15f, 60, 140);
 
 	private Spell continuousSpell;
+	private int spellCounter;
 
 	private static final List<Spell> attack = Collections.singletonList(Spells.flame_ray);
 
@@ -50,7 +51,7 @@ public class EntityPhoenix extends EntitySummonedCreature implements ISpellCaste
 		this.tasks.addTask(3, new EntityAILookIdle(this));
 		// this.targetTasks.addTask(0, new EntityAIMoveTowardsTarget(this, 1, 10));
 		this.targetTasks.addTask(1, new EntityAIHurtByTarget(this, true));
-		this.targetTasks.addTask(2, new EntityAINearestAttackableTarget<EntityLivingBase>(this, EntityLivingBase.class,
+		this.targetTasks.addTask(2, new EntityAINearestAttackableTarget<>(this, EntityLivingBase.class,
 				0, false, true, this.getTargetSelector()));
 
 		this.setAIMoveSpeed((float)AISpeed);
@@ -76,6 +77,16 @@ public class EntityPhoenix extends EntitySummonedCreature implements ISpellCaste
 		continuousSpell = spell;
 	}
 
+	@Override
+	public void setSpellCounter(int count){
+		spellCounter = count;
+	}
+
+	@Override
+	public int getSpellCounter(){
+		return spellCounter;
+	}
+
 	@Override
 	public boolean hasRangedAttack(){
 		return true;

src/main/java/electroblob/wizardry/entity/living/EntityShadowWraith.java

@@ -45,7 +45,7 @@ public class EntityShadowWraith extends EntitySummonedCreature implements ISpell
 		this.tasks.addTask(2, new EntityAIWander(this, AISpeed));
 		this.tasks.addTask(3, new EntityAILookIdle(this));
 		this.targetTasks.addTask(1, new EntityAIHurtByTarget(this, true));
-		this.targetTasks.addTask(2, new EntityAINearestAttackableTarget<EntityLivingBase>(this, EntityLivingBase.class,
+		this.targetTasks.addTask(2, new EntityAINearestAttackableTarget<>(this, EntityLivingBase.class,
 				0, false, true, this.getTargetSelector()));
 
 		this.setAIMoveSpeed((float)AISpeed);
@@ -61,21 +61,6 @@ public class EntityShadowWraith extends EntitySummonedCreature implements ISpell
 		return attack;
 	}
 
-	@Override
-	public SpellModifiers getModifiers(){
-		return new SpellModifiers();
-	}
-
-	@Override
-	public Spell getContinuousSpell(){
-		return Spells.none;
-	}
-
-	@Override
-	public void setContinuousSpell(Spell spell){
-		// Doesn't use continuous spells.
-	}
-
 	@Override
 	protected void applyEntityAttributes(){
 		super.applyEntityAttributes();

src/main/java/electroblob/wizardry/entity/living/EntityStormElemental.java

@@ -59,21 +59,6 @@ public class EntityStormElemental extends EntitySummonedCreature implements ISpe
 		return attack;
 	}
 
-	@Override
-	public SpellModifiers getModifiers(){
-		return new SpellModifiers();
-	}
-
-	@Override
-	public Spell getContinuousSpell(){
-		return Spells.none;
-	}
-
-	@Override
-	public void setContinuousSpell(Spell spell){
-		// Doesn't use continuous spells.
-	}
-
 	@Override
 	protected void applyEntityAttributes(){
 		super.applyEntityAttributes();

src/main/java/electroblob/wizardry/entity/living/EntityWizard.java

@@ -83,6 +83,7 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 	// Field implementations
 	private List<Spell> spells = new ArrayList<Spell>(4);
 	private Spell continuousSpell;
+	private int spellCounter;
 
 	/** A set of the positions of the blocks that are part of this wizard's tower. */
 	private Set<BlockPos> towerBlocks;
@@ -187,7 +188,17 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 	public Spell getContinuousSpell(){
 		return this.continuousSpell;
 	}
-	
+
+	@Override
+	public void setSpellCounter(int count){
+		spellCounter = count;
+	}
+
+	@Override
+	public int getSpellCounter(){
+		return spellCounter;
+	}
+
 	@Override
 	public int getAimingError(EnumDifficulty difficulty){
 		// Being more intelligent than skeletons, wizards are a little more accurate.
@@ -218,7 +229,8 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 		// Copied from EntityVillager
 		if(!this.world.isRemote && this.livingSoundTime > -this.getTalkInterval() + 20){
             this.livingSoundTime = -this.getTalkInterval();
-            this.playSound(stack.isEmpty() ? WizardrySounds.ENTITY_WIZARD_NO : WizardrySounds.ENTITY_WIZARD_YES, this.getSoundVolume(), this.getSoundPitch());
+            SoundEvent yes = Wizardry.tisTheSeason ? WizardrySounds.ENTITY_WIZARD_HOHOHO : WizardrySounds.ENTITY_WIZARD_YES;
+            this.playSound(stack.isEmpty() ? WizardrySounds.ENTITY_WIZARD_NO : yes, this.getSoundVolume(), this.getSoundPitch());
         }
 	}
 
@@ -256,6 +268,7 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 	
 	@Override
 	protected SoundEvent getAmbientSound(){
+		if(Wizardry.tisTheSeason) return WizardrySounds.ENTITY_WIZARD_HOHOHO;
 		return this.isTrading() ? WizardrySounds.ENTITY_WIZARD_TRADING : WizardrySounds.ENTITY_WIZARD_AMBIENT;
 	}
 
@@ -357,7 +370,7 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 		// When right-clicked with a spell book in creative, sets one of the spells to that spell
 		if(player.isCreative() && stack.getItem() instanceof ItemSpellBook){
 			Spell spell = Spell.byMetadata(stack.getItemDamage());
-			if(this.spells.size() >= 4 && spell.canBeCastByNPCs()){
+			if(this.spells.size() >= 4 && spell.canBeCastBy(this, true)){
 				// The set(...) method returns the element that was replaced - neat!
 				player.sendMessage(new TextComponentTranslation("item." + Wizardry.MODID + ":spell_book.apply_to_wizard",
 						this.getDisplayName(), this.spells.set(rand.nextInt(3) + 1, spell).getNameForTranslationFormatted(),
@@ -387,15 +400,15 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 		super.writeEntityToNBT(nbt);
 
 		if(this.trades != null){
-			nbt.setTag("trades", this.trades.getRecipiesAsTags());
+			NBTExtras.storeTagSafely(nbt, "trades", this.trades.getRecipiesAsTags());
 		}
 
 		nbt.setInteger("element", this.getElement().ordinal());
 		nbt.setInteger("skin", this.textureIndex);
-		nbt.setTag("spells", NBTExtras.listToNBT(spells, spell -> new NBTTagInt(spell.metadata())));
+		NBTExtras.storeTagSafely(nbt, "spells", NBTExtras.listToNBT(spells, spell -> new NBTTagInt(spell.metadata())));
 
 		if(this.towerBlocks != null && this.towerBlocks.size() > 0){
-			nbt.setTag("towerBlocks", NBTExtras.listToNBT(this.towerBlocks, NBTUtil::createPosTag));
+			NBTExtras.storeTagSafely(nbt, "towerBlocks", NBTExtras.listToNBT(this.towerBlocks, NBTUtil::createPosTag));
 		}
 	}
 
@@ -414,7 +427,7 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 		this.spells = (List<Spell>)NBTExtras.NBTToList(nbt.getTagList("spells", NBT.TAG_INT),
 				(NBTTagInt tag) -> Spell.byMetadata(tag.getInt()));
 
-		NBTTagList tagList = nbt.getTagList("towerBlocks", NBT.TAG_LONG);
+		NBTTagList tagList = nbt.getTagList("towerBlocks", NBT.TAG_COMPOUND);
 		if(!tagList.isEmpty()){
 			this.towerBlocks = new HashSet<>(NBTExtras.NBTToList(tagList, NBTUtil::getPosFromTag));
 		}else{
@@ -750,7 +763,7 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 		// All wizards know magic missile, even if it is disabled.
 		spells.add(Spells.magic_missile);
 
-		Tier maxTier = populateSpells(spells, element, false, 3, rand);
+		Tier maxTier = populateSpells(this, spells, element, false, 3, rand);
 
 		// Now done after the spells so it can take the tier into account.
 		ItemStack wand = new ItemStack(WizardryItems.getWand(maxTier, element));
@@ -767,19 +780,21 @@ public class EntityWizard extends EntityCreature implements INpc, IMerchant, ISp
 	/**
 	 * Adds n random spells to the given list. The spells will be of the given element if possible. Extracted as a
 	 * separate function since it was the same in both EntityWizard and EntityEvilWizard.
-	 * 
+	 *
+	 * @param wizard The wizard whose spells are to be populated.
 	 * @param spells The spell list to be populated.
 	 * @param e The element that the spells should belong to, or {@link Element#MAGIC} for a random element each time.
+	 * @param master Whether to include master spells.
 	 * @param n The number of spells to add.
 	 * @param random A random number generator to use.
 	 * @return The tier of the highest-tier spell that was added to the list.
 	 */
-	static Tier populateSpells(List<Spell> spells, Element e, boolean master, int n, Random random){
+	static Tier populateSpells(final EntityLiving wizard, List<Spell> spells, Element e, boolean master, int n, Random random){
 
 		// This is the tier of the highest tier spell added.
 		Tier maxTier = Tier.NOVICE;
 
-		List<Spell> npcSpells = Spell.getSpells(Spell.npcSpells);
+		List<Spell> npcSpells = Spell.getSpells(s -> s.canBeCastBy(wizard, false));
 		npcSpells.removeIf(s -> !s.applicableForItem(WizardryItems.spell_book));
 
 		for(int i = 0; i < n; i++){

src/main/java/electroblob/wizardry/entity/living/ISpellCaster.java

@@ -19,7 +19,9 @@ import java.util.List;
  * packets) is handled by that class, and all the implementor needs to do is decide which spell(s) to select.
  * <p></p>
  * This class also allows Wizardry to do all the syncing necessary for continuous spell casting. All the implementor
- * needs to do is store the actual fields involved.
+ * needs to do is store the actual fields involved, by implementing {@link ISpellCaster#setContinuousSpell(Spell)},
+ * {@link ISpellCaster#getContinuousSpell()}, {@link ISpellCaster#setSpellCounter(int)}, {@link ISpellCaster#getSpellCounter()}
+ * and {@link ISpellCaster#getModifiers()}.
  */
 /* Perhaps this should be a capability? Though I can't help thinking they're mainly for attaching data to vanilla
  * classes, rather than custom ones. For now, the main purpose of this is to centralise code within wizardry itself, and
@@ -36,10 +38,10 @@ public interface ISpellCaster {
 	 * 
 	 * @return A list of {@link Spell} instances. A random spell from this list will be cast when the entity attacks.
 	 *         The list will not be modified by the AI class and can therefore be an immutable list. The spells in the
-	 *         list <b>must</b> be castable by NPCs (i.e. {@link Spell#canBeCastByNPCs()} returns true).
+	 *         list <b>must</b> be castable by NPCs (i.e. {@link Spell#canBeCastBy(net.minecraft.entity.EntityLiving, boolean)} returns true).
 	 */
 	@Nonnull
-	public List<Spell> getSpells();
+	List<Spell> getSpells();
 
 	/**
 	 * Called each time the entity attacks to get the modifiers to apply to the spell.
@@ -48,31 +50,47 @@ public interface ISpellCaster {
 	 *         required, pass in an empty {@code SpellModifiers} object.
 	 */
 	@Nonnull
-	public SpellModifiers getModifiers();
+	default SpellModifiers getModifiers(){
+		return new SpellModifiers(); // May seem wasteful but this should never be called so it doesn't matter
+	}
 
 	/**
 	 * Returns the continuous spell that is currently being cast, or the None spell if there is none. Implementors
 	 * should simply store this as a private field and return it here. Will be synced by the AI class, but whether it is
-	 * saved to NBT is up to you. If the implementing class does not deal with continuous spells, just return
+	 * saved to NBT is up to you. If the implementing class only ever uses one continuous spell, do <b>not</b> just
-	 * {@link Spells#none}. If the implementing class only ever uses one continuous spell, do <b>not</b> just return
+	 * return that spell; the field must still be stored.
-	 * that spell; the field must still be stored.
 	 */
 	@Nonnull
-	public Spell getContinuousSpell();
+	default Spell getContinuousSpell(){
+		return Spells.none;
+	}
 
 	/**
 	 * Sets the continuous spell that is currently being cast, or the None spell if there is none. Implementors should
 	 * simply store this as a private field and assign it here. Will be synced by the AI class, but whether it is saved
 	 * to NBT is up to you. If the implementing class does not deal with continuous spells, leave this method blank.
 	 */
-	public void setContinuousSpell(Spell spell);
+	default void setContinuousSpell(Spell spell){
+		// Do nothing
+	}
+
+	/** Returns the number of ticks the current spell has been cast for. Implementors should simply store this as a
+	 * private field and return it here. This is only used client-side. */
+	default int getSpellCounter(){
+		return 0;
+	}
+
+	/** Sets the number of ticks the current spell has been cast for. Implementors should simply store this as a
+	 * private field and assign it here. This is only used client-side. */
+	default void setSpellCounter(int count){
+		// Do nothing
+	}
 	
 	/**
-	 * Returns the aiming arror for the given difficulty, used in projectile spells. Defaults to the values used by
+	 * Returns the aiming error for the given difficulty, used in projectile spells. Defaults to the values used by
 	 * skeletons, which are: Easy - 10, Normal - 6, Hard - 2, Peaceful - 10 (rarely used).
 	 */
-	// This is what default methods are actually intended for!
+	default int getAimingError(EnumDifficulty difficulty) {
-	public default int getAimingError(EnumDifficulty difficulty) {
 		return WizardryUtilities.getDefaultAimingError(difficulty);
 	}
 }

src/main/java/electroblob/wizardry/entity/living/ISummonedCreature.java

@@ -221,7 +221,8 @@ public interface ISummonedCreature extends IEntityAdditionalSpawnData, IEntityOw
 	 * possible for implementors to override this in order to do something special when selecting a target.
 	 */
 	default Predicate<Entity> getTargetSelector(){
-		return entity -> getCaster() == null ? entity instanceof EntityPlayer : !entity.isInvisible() && isValidTarget(entity);
+		return entity -> !entity.isInvisible() && (getCaster() == null ? entity instanceof EntityPlayer &&
+				!((EntityPlayer)entity).isCreative() : isValidTarget(entity));
 	}
 
 	/**

src/main/java/electroblob/wizardry/entity/projectile/EntityMagicFireball.java

@@ -9,11 +9,15 @@ import electroblob.wizardry.util.ParticleBuilder;
 import io.netty.buffer.ByteBuf;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLiving;
+import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.projectile.EntitySmallFireball;
 import net.minecraft.init.Blocks;
 import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.util.DamageSource;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.MathHelper;
 import net.minecraft.util.math.RayTraceResult;
+import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
 import net.minecraftforge.event.entity.EntityJoinWorldEvent;
 import net.minecraftforge.fml.common.Mod;
@@ -131,6 +135,54 @@ public class EntityMagicFireball extends EntityMagicProjectile {
 		}
 	}
 
+	@Override
+	public boolean canBeCollidedWith(){
+		return true;
+	}
+
+	@Override
+	public float getCollisionBorderSize(){
+		return 1.0F;
+	}
+
+	@Override
+	public boolean attackEntityFrom(DamageSource source, float amount){
+
+		if(this.isEntityInvulnerable(source)){
+			return false;
+
+		}else{
+
+			this.markVelocityChanged();
+
+			if(source.getTrueSource() != null){
+
+				Vec3d vec3d = source.getTrueSource().getLookVec();
+
+				if(vec3d != null){
+
+					double speed = MathHelper.sqrt(motionX * motionX + motionY * motionY + motionZ * motionZ);
+
+					this.motionX = vec3d.x * speed;
+					this.motionY = vec3d.y * speed;
+					this.motionZ = vec3d.z * speed;
+
+					this.lifetime = 160;
+
+				}
+
+				if(source.getTrueSource() instanceof EntityLivingBase){
+					this.setCaster((EntityLivingBase)source.getTrueSource());
+				}
+
+				return true;
+
+			}else{
+				return false;
+			}
+		}
+	}
+
 	public void setLifetime(int lifetime){
 		this.lifetime = lifetime;
 	}

src/main/java/electroblob/wizardry/entity/projectile/EntityMagicMissile.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.entity.projectile;
 
+import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.registry.Spells;
 import electroblob.wizardry.registry.WizardrySounds;
 import electroblob.wizardry.spell.Spell;
@@ -44,15 +45,34 @@ public class EntityMagicMissile extends EntityMagicArrow {
 	public void tickInAir(){
 
 		if(this.world.isRemote){
-			ParticleBuilder.create(Type.SPARKLE, rand, posX, posY, posZ, 0.03, true).clr(1, 1, 0.65f).fade(0.7f, 0, 1)
+
-			.time(20 + rand.nextInt(10)).spawn(world);
+			if(Wizardry.tisTheSeason){
-			
+
-			if(this.ticksExisted > 1){ // Don't spawn particles behind where it started!
+				ParticleBuilder.create(Type.SPARKLE, rand, posX, posY, posZ, 0.03, true).clr(0.8f, 0.15f, 0.15f)
-				double x = posX - motionX/2;
+						.time(20 + rand.nextInt(10)).spawn(world);
-				double y = posY - motionY/2;
+
-				double z = posZ - motionZ/2;
+				ParticleBuilder.create(Type.SNOW).pos(posX, posY, posZ).spawn(world);
-				ParticleBuilder.create(Type.SPARKLE, rand, x, y, z, 0.03, true).clr(1, 1, 0.65f).fade(0.7f, 0, 1)
+
-				.time(20 + rand.nextInt(10)).spawn(world);
+				if(this.ticksExisted > 1){ // Don't spawn particles behind where it started!
+					double x = posX - motionX / 2;
+					double y = posY - motionY / 2;
+					double z = posZ - motionZ / 2;
+					ParticleBuilder.create(Type.SPARKLE, rand, x, y, z, 0.03, true).clr(0.15f, 0.7f, 0.15f)
+							.time(20 + rand.nextInt(10)).spawn(world);
+				}
+
+			}else{
+
+				ParticleBuilder.create(Type.SPARKLE, rand, posX, posY, posZ, 0.03, true).clr(1, 1, 0.65f).fade(0.7f, 0, 1)
+						.time(20 + rand.nextInt(10)).spawn(world);
+
+				if(this.ticksExisted > 1){ // Don't spawn particles behind where it started!
+					double x = posX - motionX / 2;
+					double y = posY - motionY / 2;
+					double z = posZ - motionZ / 2;
+					ParticleBuilder.create(Type.SPARKLE, rand, x, y, z, 0.03, true).clr(1, 1, 0.65f).fade(0.7f, 0, 1)
+							.time(20 + rand.nextInt(10)).spawn(world);
+				}
 			}
 		}
 	}

src/main/java/electroblob/wizardry/entity/projectile/EntityMagicProjectile.java

@@ -71,7 +71,7 @@ public abstract class EntityMagicProjectile extends EntityThrowable implements I
 		double dy = !this.hasNoGravity() ? target.getEntityBoundingBox().minY + (double)(target.height / 3.0f) - this.posY
 				: target.getEntityBoundingBox().minY + (double)(target.height / 2.0f) - this.posY;
 		double dz = target.posZ - caster.posZ;
-		double horizontalDistance = (double)MathHelper.sqrt(dx * dx + dz * dz);
+		double horizontalDistance = MathHelper.sqrt(dx * dx + dz * dz);
 
 		if(horizontalDistance >= 1.0E-7D){
 			

src/main/java/electroblob/wizardry/entity/projectile/EntitySmokeBomb.java

@@ -9,7 +9,6 @@ import electroblob.wizardry.util.ParticleBuilder.Type;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
-import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.init.MobEffects;
 import net.minecraft.potion.PotionEffect;
 import net.minecraft.util.EnumParticleTypes;
@@ -66,12 +65,11 @@ public class EntitySmokeBomb extends EntityBomb {
 
 			for(EntityLivingBase target : targets){
 				if(target != this.getThrower()){
-					// Gives the target blindness if it is a player, mind trick otherwise (since this has the desired
+					// Gives the target blindness, and mind trick if it's not a player (since this has the desired
 					// effect of preventing targeting)
-					if(target instanceof EntityPlayer){
+					target.addPotionEffect(new PotionEffect(MobEffects.BLINDNESS, duration, 0));
-						target.addPotionEffect(new PotionEffect(MobEffects.BLINDNESS, duration, 0));
+
-					}else if(target instanceof EntityLiving){
+					if(target instanceof EntityLiving){
-						// New AI
 						((EntityLiving)target).setAttackTarget(null);
 						target.addPotionEffect(new PotionEffect(WizardryPotions.mind_trick, duration, 0));
 					}

src/main/java/electroblob/wizardry/item/IConjuredItem.java

@@ -58,6 +58,8 @@ public interface IConjuredItem {
 	 */
 	default int getMaxDamageFromNBT(ItemStack stack, Spell spell){
 
+		if(!spell.arePropertiesInitialised()) return 600; // Failsafe, some edge-cases call this during preInit
+
 		float baseDuration = spell.getProperty(SpellConjuration.ITEM_LIFETIME).floatValue();
 
 		if(stack.hasTagCompound() && stack.getTagCompound().hasKey(DURATION_MULTIPLIER_KEY)){

src/main/java/electroblob/wizardry/item/ItemArcaneTome.java

@@ -61,11 +61,10 @@ public class ItemArcaneTome extends Item {
 
 		Tier tier = Tier.values()[stack.getItemDamage()];
 		Tier tier2 = Tier.values()[stack.getItemDamage() - 1];
+
 		tooltip.add(tier.getDisplayNameWithFormatting());
-		tooltip.add("\u00A77" + net.minecraft.client.resources.I18n.format("item." + Wizardry.MODID + ":arcane_tome.desc1",
+		Wizardry.proxy.addMultiLineDescription(tooltip, "item." + this.getRegistryName() + ".desc",
-				tier2.getDisplayNameWithFormatting()));
+				tier2.getDisplayNameWithFormatting() + "\u00A77", tier.getDisplayNameWithFormatting() + "\u00A77");
-		tooltip.add("\u00A77" + net.minecraft.client.resources.I18n.format("item." + Wizardry.MODID + ":arcane_tome.desc2",
-				tier.getDisplayNameWithFormatting() + "\u00A77"));
 	}
 
 }

src/main/java/electroblob/wizardry/item/ItemArtefact.java

@@ -639,6 +639,7 @@ public class ItemArtefact extends Item {
 
 						WizardryUtilities.getEntitiesWithinRadius(3, player.posX, player.posY, player.posZ, world).stream()
 								.filter(WizardryUtilities::isLiving)
+								.filter(e -> e != player)
 								.min(Comparator.comparingDouble(player::getDistanceSq))
 								.ifPresent(target -> {
 

src/main/java/electroblob/wizardry/item/ItemBlankScroll.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.item;
 
+import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.constants.Constants;
 import electroblob.wizardry.data.WizardData;
 import electroblob.wizardry.registry.Spells;
@@ -11,11 +12,13 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.inventory.Slot;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.ResourceLocation;
 
 public class ItemBlankScroll extends Item implements IWorkbenchItem {
 
 	public ItemBlankScroll(){
 		this.setCreativeTab(WizardryTabs.WIZARDRY);
+		this.addPropertyOverride(new ResourceLocation("festive"), (s, w, e) -> Wizardry.tisTheSeason ? 1 : 0);
 	}
 
 	@Override
@@ -45,10 +48,14 @@ public class ItemBlankScroll extends Item implements IWorkbenchItem {
 				int cost = spell.getCost() * centre.getStack().getCount();
 				// Continuous spell scrolls require enough mana to cast them for the duration defined in ItemScroll.
 				if(spell.isContinuous) cost *= ItemScroll.CASTING_TIME / 20;
+
+				int manaPerItem = Constants.MANA_PER_CRYSTAL;
+				if(crystals.getStack().getItem() == WizardryItems.crystal_shard) manaPerItem = Constants.MANA_PER_SHARD;
+				if(crystals.getStack().getItem() == WizardryItems.grand_crystal) manaPerItem = Constants.GRAND_CRYSTAL_MANA;
 				
-				if(crystals.getStack().getCount() * Constants.MANA_PER_CRYSTAL > cost){
+				if(crystals.getStack().getCount() * manaPerItem > cost){
 					// Rounds up to the nearest whole crystal
-					crystals.decrStackSize(cost / Constants.MANA_PER_CRYSTAL + 1);
+					crystals.decrStackSize(cost / manaPerItem + 1);
 					centre.putStack(new ItemStack(WizardryItems.scroll, centre.getStack().getCount(), spell.metadata()));
 					return true;
 				}

src/main/java/electroblob/wizardry/item/ItemFrostAxe.java

@@ -3,6 +3,7 @@ package electroblob.wizardry.item;
 import com.google.common.collect.Multimap;
 import electroblob.wizardry.registry.Spells;
 import electroblob.wizardry.registry.WizardryPotions;
+import electroblob.wizardry.spell.Spell;
 import electroblob.wizardry.util.MagicDamage;
 import electroblob.wizardry.util.MagicDamage.DamageType;
 import electroblob.wizardry.util.WizardryUtilities;
@@ -81,6 +82,12 @@ public class ItemFrostAxe extends ItemAxe implements IConjuredItem {
 		stack.setItemDamage(damage + 1);
 	}
 
+	@Override
+	public Multimap<String, AttributeModifier> getItemAttributeModifiers(EntityEquipmentSlot equipmentSlot){
+		attackDamage = Spells.frost_axe.getProperty(Spell.DAMAGE).floatValue();
+		return super.getItemAttributeModifiers(equipmentSlot);
+	}
+
 	@Override
 	public boolean hitEntity(ItemStack stack, EntityLivingBase target, EntityLivingBase wielder){
 		if(!MagicDamage.isEntityImmune(DamageType.FROST, target))

src/main/java/electroblob/wizardry/item/ItemScroll.java

@@ -1,7 +1,6 @@
 package electroblob.wizardry.item;
 
 import electroblob.wizardry.Wizardry;
-import electroblob.wizardry.data.SpellGlyphData;
 import electroblob.wizardry.event.SpellCastEvent;
 import electroblob.wizardry.event.SpellCastEvent.Source;
 import electroblob.wizardry.packet.PacketCastSpell;
@@ -14,16 +13,12 @@ import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
-import net.minecraft.util.ActionResult;
+import net.minecraft.util.*;
-import net.minecraft.util.EnumActionResult;
-import net.minecraft.util.EnumHand;
-import net.minecraft.util.NonNullList;
 import net.minecraft.world.World;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
-import net.minecraftforge.oredict.OreDictionary;
 
 import java.util.List;
 
@@ -37,6 +32,7 @@ public class ItemScroll extends Item implements ISpellCastingItem {
 		setHasSubtypes(true);
 		setMaxStackSize(16);
 		setCreativeTab(WizardryTabs.SPELLS);
+		this.addPropertyOverride(new ResourceLocation("festive"), (s, w, e) -> Wizardry.tisTheSeason ? 1 : 0);
 	}
 	
 	@Override
@@ -54,7 +50,7 @@ public class ItemScroll extends Item implements ISpellCastingItem {
 
 		if(tab == WizardryTabs.SPELLS){
 
-			List<Spell> spells = Spell.getSpells(Spell.allSpells);
+			List<Spell> spells = Spell.getAllSpells();
 			spells.removeIf(s -> !s.applicableForItem(this));
 
 			for(Spell spell : spells){

src/main/java/electroblob/wizardry/item/ItemSpellBook.java

@@ -33,6 +33,7 @@ public class ItemSpellBook extends Item {
 		setHasSubtypes(true);
 		setMaxStackSize(16);
 		setCreativeTab(WizardryTabs.SPELLS);
+		this.addPropertyOverride(new ResourceLocation("festive"), (s, w, e) -> Wizardry.tisTheSeason ? 1 : 0);
 	}
 
 	@Override
@@ -40,7 +41,7 @@ public class ItemSpellBook extends Item {
 
 		if(tab == WizardryTabs.SPELLS){
 
-			List<Spell> spells = Spell.getSpells(Spell.allSpells);
+			List<Spell> spells = Spell.getAllSpells();
 			spells.removeIf(s -> !s.applicableForItem(this));
 
 			for(Spell spell : spells){

src/main/java/electroblob/wizardry/item/ItemWand.java

@@ -400,7 +400,7 @@ public class ItemWand extends Item implements IWorkbenchItem, ISpellCastingItem,
 			if(MinecraftForge.EVENT_BUS.post(new SpellCastEvent.Tick(Source.WAND, spell, caster, modifiers, castingTick))) return false;
 		}
 
-		int cost = (int)(spell.getCost() * modifiers.get(SpellModifiers.COST));
+		int cost = (int)(spell.getCost() * modifiers.get(SpellModifiers.COST) + 0.1f); // Weird floaty rounding
 
 		// As of wizardry 4.2 mana cost is only divided over two intervals each second
 		if(spell.isContinuous) cost = getDistributedCost(cost, castingTick);
@@ -436,7 +436,7 @@ public class ItemWand extends Item implements IWorkbenchItem, ISpellCastingItem,
 				caster.setActiveHand(hand);
 
 				// Mana cost
-				int cost = (int)(spell.getCost() * modifiers.get(SpellModifiers.COST));
+				int cost = (int)(spell.getCost() * modifiers.get(SpellModifiers.COST) + 0.1f); // Weird floaty rounding
 				// As of wizardry 4.2 mana cost is only divided over two intervals each second
 				if(spell.isContinuous) cost = getDistributedCost(cost, castingTick);
 
@@ -497,7 +497,7 @@ public class ItemWand extends Item implements IWorkbenchItem, ISpellCastingItem,
 
 			int castingTick = stack.getMaxItemUseDuration() - timeLeft; // Might as well include this
 
-			int cost = getDistributedCost((int)(spell.getCost() * modifiers.get(SpellModifiers.COST)), castingTick);
+			int cost = getDistributedCost((int)(spell.getCost() * modifiers.get(SpellModifiers.COST) + 0.1f), castingTick);
 
 			// Still need to check there's enough mana or the spell will finish twice, since running out of mana is
 			// handled separately.

src/main/java/electroblob/wizardry/item/ItemWizardArmour.java

@@ -57,12 +57,12 @@ public class ItemWizardArmour extends ItemArmor implements IWorkbenchItem, IMana
 	}
 
 	/** Should only be used by vanilla's armour damage calculations; use {@link ItemWizardArmour#setMana(ItemStack, int)}
-	 * to modify wand mana from elsewhere. */
+	 * to modify armour mana from elsewhere. */
 	@Override
 	public void setDamage(ItemStack stack, int damage){
 		// Overridden to stop repair things from 'repairing' the mana in wizard armour
 		// This being armour, it's much easier to let its damage increase normally, but block it from being decreased
-		if(stack.getItemDamage() < damage) super.setDamage(stack, damage);
+		if(stack.getItemDamage() < damage) super.setDamage(stack, Math.min(damage, stack.getMaxDamage()));
 	}
 
 	@Override
@@ -178,9 +178,14 @@ public class ItemWizardArmour extends ItemArmor implements IWorkbenchItem, IMana
 
 		String s = "wizard_armour";
 
-		if(this.element != null) s = s + "_" + this.element.getName();
+		if(Wizardry.tisTheSeason){
+			s = s + "_festive";
+		}else{
+			if(this.element != null) s = s + "_" + this.element.getName();
+			if(stack.hasTagCompound() && stack.getTagCompound().getBoolean("legendary")) s = "legendary_" + s;
+		}
+
 		if(slot == EntityEquipmentSlot.LEGS) s = s + "_legs";
-		if(stack.hasTagCompound() && stack.getTagCompound().getBoolean("legendary")) s = "legendary_" + s;
 
 		return "ebwizardry:textures/armour/" + s + ".png";
 	}
@@ -325,7 +330,7 @@ public class ItemWizardArmour extends ItemArmor implements IWorkbenchItem, IMana
 			IAttributeInstance attribute = event.getEntityLiving().getEntityAttribute(SharedMonsterAttributes.FOLLOW_RANGE);
 			double followRange = attribute == null ? 16 : attribute.getAttributeValue();
 			if(event.getTarget().isSneaking()) followRange *= 0.8;
-			float f = armourPieces / ((EntityPlayer)event.getTarget()).inventory.armorInventory.size();
+			float f = (float)armourPieces / ((EntityPlayer)event.getTarget()).inventory.armorInventory.size();
 			if(f < 0.1F) f = 0.1F;
 			followRange *= (double)(0.7F * f);
 			// Don't need to worry about the isSuitableTarget check since it must already have been checked to get this far

src/main/java/electroblob/wizardry/misc/BehaviourSpellDispense.java

@@ -62,7 +62,7 @@ public class BehaviourSpellDispense extends BehaviorDispenseOptional {
 		if(world.isSideSolid(source.getBlockPos().offset(direction), direction.getOpposite())) return stack;
 		
 		// If the scroll can never be cast by a dispenser, it should be dispensed as an item.
-		if(!spell.canBeCastByDispensers()) return super.dispenseStack(source, stack);
+		if(!spell.canBeCastBy(source.getBlockTileEntity())) return super.dispenseStack(source, stack);
 		
 		SpellModifiers modifiers = new SpellModifiers();
 		

src/main/java/electroblob/wizardry/packet/PacketEndSlowTime.java

@@ -1,47 +0,0 @@
-package electroblob.wizardry.packet;
-
-import electroblob.wizardry.Wizardry;
-import io.netty.buffer.ByteBuf;
-import net.minecraft.entity.Entity;
-import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
-import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
-import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;
-
-/** <b>[Server -> Client]</b> This packet is sent when the slow time potion effect expires or is removed from an
- * entity to unblock all nearby entities' updates. */
-public class PacketEndSlowTime implements IMessageHandler<PacketEndSlowTime.Message, IMessage> {
-
-	@Override
-	public IMessage onMessage(Message message, MessageContext ctx){
-
-		// Just to make sure that the side is correct
-		if(ctx.side.isClient()){
-			net.minecraft.client.Minecraft.getMinecraft().addScheduledTask(() -> Wizardry.proxy.handleEndSlowTimePacket(message));
-		}
-
-		return null;
-	}
-
-	public static class Message implements IMessage {
-
-		public int hostID;
-
-		// This constructor is required otherwise you'll get errors (used somewhere in fml through reflection)
-		public Message(){
-		}
-
-		public Message(Entity host){
-			this.hostID = host.getEntityId();
-		}
-
-		@Override
-		public void fromBytes(ByteBuf buf){
-			this.hostID = buf.readInt();
-		}
-
-		@Override
-		public void toBytes(ByteBuf buf){
-			buf.writeInt(hostID);
-		}
-	}
-}

src/main/java/electroblob/wizardry/packet/WizardryPacketHandler.java

@@ -26,7 +26,6 @@ public class WizardryPacketHandler {
 		registerMessage(PacketSpellProperties.class, PacketSpellProperties.Message.class);
 		registerMessage(PacketSyncAdvancements.class, PacketSyncAdvancements.Message.class);
 		registerMessage(PacketRequestAdvancementSync.class, PacketRequestAdvancementSync.Message.class);
-		registerMessage(PacketEndSlowTime.class, PacketEndSlowTime.Message.class);
 		registerMessage(PacketResurrection.class, PacketResurrection.Message.class);
 		registerMessage(PacketCastSpellAtPos.class, PacketCastSpellAtPos.Message.class);
 		registerMessage(PacketEmitterData.class, PacketEmitterData.Message.class);

src/main/java/electroblob/wizardry/potion/PotionContainment.java

@@ -2,6 +2,7 @@ package electroblob.wizardry.potion;
 
 import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.registry.WizardryPotions;
+import electroblob.wizardry.util.NBTExtras;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayerMP;
@@ -40,7 +41,7 @@ public class PotionContainment extends PotionMagicEffect {
 
 		// Initialise the containment position to the entity's position if it wasn't set already
 		if(!target.getEntityData().hasKey(ENTITY_TAG)){
-			target.getEntityData().setTag(ENTITY_TAG, NBTUtil.createPosTag(new BlockPos(target.getPositionVector().subtract(0.5, 0.5, 0.5))));
+			NBTExtras.storeTagSafely(target.getEntityData(), ENTITY_TAG, NBTUtil.createPosTag(new BlockPos(target.getPositionVector().subtract(0.5, 0.5, 0.5))));
 		}
 
 		Vec3d origin = WizardryUtilities.getCentre(NBTUtil.getPosFromTag(target.getEntityData().getCompoundTag(ENTITY_TAG)));

src/main/java/electroblob/wizardry/potion/PotionSlowTime.java

@@ -2,8 +2,6 @@ package electroblob.wizardry.potion;
 
 import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.item.ItemArtefact;
-import electroblob.wizardry.packet.PacketEndSlowTime;
-import electroblob.wizardry.packet.WizardryPacketHandler;
 import electroblob.wizardry.registry.Spells;
 import electroblob.wizardry.registry.WizardryItems;
 import electroblob.wizardry.registry.WizardryPotions;
@@ -17,11 +15,15 @@ import net.minecraft.entity.IProjectile;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.projectile.EntityArrow;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.world.World;
 import net.minecraftforge.event.entity.living.LivingEvent.LivingUpdateEvent;
 import net.minecraftforge.event.entity.living.PotionEvent;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.common.gameevent.PlayerEvent;
+import net.minecraftforge.fml.common.gameevent.TickEvent;
 
+import java.util.ArrayList;
 import java.util.List;
 
 @Mod.EventBusSubscriber
@@ -29,6 +31,8 @@ public class PotionSlowTime extends PotionMagicEffect implements ISyncedPotion {
 
 	// FIXME: Minecarts with entities in them (and, I suspect, any other ridden entities) go crazy when time-slowed
 
+	public static final String NBT_KEY = "time_slowed";
+
 	public PotionSlowTime(boolean isBadEffect, int liquidColour){
 		super(isBadEffect, liquidColour, new ResourceLocation(Wizardry.MODID, "textures/gui/potion_icon_slow_time.png"));
 		this.setPotionName("potion." + Wizardry.MODID + ":slow_time");
@@ -61,6 +65,8 @@ public class PotionSlowTime extends PotionMagicEffect implements ISyncedPotion {
 
 		for(Entity entity : targetsInRange){
 
+			entity.getEntityData().setBoolean(NBT_KEY, true);
+
 			// If time is stopped, block all updates; otherwise block all updates except every [interval] ticks
 			entity.updateBlocked = stopTime || host.ticksExisted % interval != 0;
 
@@ -130,6 +136,29 @@ public class PotionSlowTime extends PotionMagicEffect implements ISyncedPotion {
 
 	}
 
+	/**
+	 * Goes through every entity in the given world and does the following:<br>
+	 * 1. Checks if they have the slow time NBT tag<br>
+	 * 2. If so, scans the area nearby for players or NPCs with the slow time effect<br>
+	 * 3. If none are found, removes the slow time NBT tag and unblocks the entity's updates
+	 */
+	public static void cleanUpEntities(World world){
+		// Had trouble with accessing loadedTileEntityList from tick events causing random CMEs so I'm making a
+		// copy of this too just in case
+		List<Entity> loadedEntityList = new ArrayList<>(world.loadedEntityList);
+
+		for(Entity entity : loadedEntityList){
+			if(entity.getEntityData().getBoolean(NBT_KEY)){
+				// Currently only players can cast slow time, but you could apply the effect to NPCs with commands
+				List<EntityLivingBase> nearby = WizardryUtilities.getEntitiesWithinRadius(getEffectRadius(), entity.posX, entity.posY, entity.posZ, entity.world, EntityLivingBase.class);
+				if(nearby.stream().noneMatch(e -> e.isPotionActive(WizardryPotions.slow_time))){
+					entity.getEntityData().removeTag(NBT_KEY);
+					entity.updateBlocked = false;
+				}
+			}
+		}
+	}
+
 	@SubscribeEvent
 	public static void onLivingUpdateEvent(LivingUpdateEvent event){
 
@@ -150,23 +179,16 @@ public class PotionSlowTime extends PotionMagicEffect implements ISyncedPotion {
 	}
 
 	@SubscribeEvent
-	public static void onPotionExpiryEvent(PotionEvent.PotionExpiryEvent event){
+	public static void tick(TickEvent.WorldTickEvent event){
-		if(event.getPotionEffect() != null && event.getPotionEffect().getPotion() == WizardryPotions.slow_time){
+		if(!event.world.isRemote && event.phase == TickEvent.Phase.END) cleanUpEntities(event.world);
-			unblockNearbyEntities(event.getEntityLiving());
-			if(!event.getEntity().world.isRemote){
-				WizardryPacketHandler.net.sendToDimension(new PacketEndSlowTime.Message(event.getEntityLiving()), event.getEntity().dimension);
-			}
-		}
 	}
 
+	// We still need this as well as tick events because the player hasn't moved anywhere, they just logged out
+	// In fact, it won't really matter since the tick event fixes it on login anyway, but if the mod is uninstalled or
+	// something else weird happens...
 	@SubscribeEvent
-	public static void onPotionRemoveEvent(PotionEvent.PotionRemoveEvent event){
+	public static void onPlayerLoggedOutEvent(PlayerEvent.PlayerLoggedOutEvent event){
-		if(event.getPotionEffect() != null && event.getPotionEffect().getPotion() == WizardryPotions.slow_time){
+		if(event.player.updateBlocked) event.player.updateBlocked = false;
-			unblockNearbyEntities(event.getEntityLiving());
-			if(!event.getEntity().world.isRemote){
-				WizardryPacketHandler.net.sendToDimension(new PacketEndSlowTime.Message(event.getEntityLiving()), event.getEntity().dimension);
-			}
-		}
 	}
 
 }

src/main/java/electroblob/wizardry/registry/Spells.java

@@ -5,6 +5,7 @@ import electroblob.wizardry.entity.construct.*;
 import electroblob.wizardry.entity.living.*;
 import electroblob.wizardry.entity.projectile.*;
 import electroblob.wizardry.spell.*;
+import net.minecraft.entity.projectile.EntitySnowball;
 import net.minecraft.init.MobEffects;
 import net.minecraft.item.EnumAction;
 import net.minecraft.util.ResourceLocation;
@@ -243,10 +244,15 @@ public final class Spells {
 		IForgeRegistry<Spell> registry = event.getRegistry();
 
 		registry.register(new None());
-		registry.register(new SpellArrow<>("magic_missile", EntityMagicMissile::new).addProperties(Spell.DAMAGE).soundValues(1, 1.4f, 0.4f));
+		registry.register(new SpellArrow<EntityMagicMissile>("magic_missile", EntityMagicMissile::new){
+			@Override
+			protected String getTranslationKey(){
+				return Wizardry.tisTheSeason ? super.getTranslationKey() + "_festive" : super.getTranslationKey();
+			}
+		}.addProperties(Spell.DAMAGE).soundValues(1, 1.4f, 0.4f));
 		registry.register(new Ignite());
 		registry.register(new Freeze());
-		registry.register(new Snowball());
+		registry.register(new SpellThrowable<>("snowball", EntitySnowball::new).npcSelector((e, o) -> o).soundValues(0.5f, 0.4f, 0.2f)); // Let's spare wizards the pain of the snowball spell
 		registry.register(new Arc());
 		registry.register(new SpellProjectile<>("thunderbolt", EntityThunderbolt::new).addProperties(Spell.DAMAGE, EntityThunderbolt.KNOCKBACK_STRENGTH).soundValues(0.8f, 0.9f, 0.2f));
 		registry.register(new SummonZombie());
@@ -316,7 +322,7 @@ public final class Spells {
 		registry.register(new SpellProjectile<>("darkness_orb", EntityDarknessOrb::new).addProperties(Spell.DAMAGE, Spell.EFFECT_DURATION, Spell.EFFECT_STRENGTH).soundValues(0.5f, 0.4f, 0.2f));
 		registry.register(new ShadowWard());
 		registry.register(new Decay());
-		registry.register(new SpellBuff("water_breathing", 0.3f, 0.3f, 1, () -> MobEffects.WATER_BREATHING){ @Override public boolean canBeCastByNPCs(){ return false; } }.soundValues(0.7f, 1.2f, 0.4f));
+		registry.register(new SpellBuff("water_breathing", 0.3f, 0.3f, 1, () -> MobEffects.WATER_BREATHING).npcSelector((e, o) -> false).soundValues(0.7f, 1.2f, 0.4f));
 		registry.register(new Tornado());
 		registry.register(new Glide());
 		registry.register(new SummonSpiritHorse());
@@ -367,7 +373,7 @@ public final class Spells {
 		registry.register(new Intimidate());
 		registry.register(new Banish());
 		registry.register(new SixthSense());
-		registry.register(new SpellBuff("darkvision", 0, 0.4f, 0.7f, () -> MobEffects.NIGHT_VISION){ @Override public boolean canBeCastByNPCs(){ return false; } }.soundValues(0.7f, 1.2f, 0.4f));
+		registry.register(new SpellBuff("darkvision", 0, 0.4f, 0.7f, () -> MobEffects.NIGHT_VISION).npcSelector((e, o) -> false).soundValues(0.7f, 1.2f, 0.4f));
 		registry.register(new Clairvoyance());
 		registry.register(new PocketWorkbench());
 		registry.register(new ImbueWeapon());

src/main/java/electroblob/wizardry/registry/WizardryLoot.java

@@ -5,7 +5,6 @@ import electroblob.wizardry.constants.Tier;
 import electroblob.wizardry.loot.RandomSpell;
 import electroblob.wizardry.loot.WizardSpell;
 import electroblob.wizardry.spell.Spell;
-import net.minecraft.entity.EntityList;
 import net.minecraft.entity.EnumCreatureType;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.storage.loot.*;

src/main/java/electroblob/wizardry/registry/WizardrySounds.java

@@ -88,6 +88,7 @@ public final class WizardrySounds {
 	public static final SoundEvent ENTITY_WIZARD_TRADING = 			createSound("entity.wizard.trading");
 	public static final SoundEvent ENTITY_WIZARD_HURT = 			createSound("entity.wizard.hurt");
 	public static final SoundEvent ENTITY_WIZARD_DEATH = 			createSound("entity.wizard.death");
+	public static final SoundEvent ENTITY_WIZARD_HOHOHO = 			createSound("entity.wizard.hohoho");
 
 	public static final SoundEvent ENTITY_DARKNESS_ORB_HIT = 		createSound("entity.darkness_orb.hit");
 	public static final SoundEvent ENTITY_DART_HIT = 				createSound("entity.dart.hit");
@@ -132,10 +133,17 @@ public final class WizardrySounds {
 	public static final SoundEvent MISC_PAGE_TURN = 				createSound("misc.page_turn");
 	public static final SoundEvent MISC_FREEZE = 					createSound("misc.freeze");
 
-	/** Trick borrowed from the Twilight Forest, makes things neater. */
+	// Trick borrowed from the Twilight Forest, makes things neater.
+
+	/** Overload for {@link WizardrySounds#createSound(String, String)} which assigns wizardry's mod ID automatically. */
 	public static SoundEvent createSound(String name){
+		return createSound(Wizardry.MODID, name);
+	}
+
+	/** Creates a sound with the given name, to be read from {@code assets/[modID]/sounds.json}. */
+	public static SoundEvent createSound(String modID, String name){
 		// All the setRegistryName methods delegate to this one, it doesn't matter which you use.
-		return new SoundEvent(new ResourceLocation(Wizardry.MODID, name)).setRegistryName(name);
+		return new SoundEvent(new ResourceLocation(modID, name)).setRegistryName(name);
 	}
 
 	// For some reason, sound events seem to work even when they aren't registered, without even so much as a warning.
@@ -250,7 +258,7 @@ public final class WizardrySounds {
 		event.getRegistry().register(MISC_PAGE_TURN);
 		event.getRegistry().register(MISC_FREEZE);
 		
-		for(Spell spell : Spell.getSpells(Spell.allSpells)){
+		for(Spell spell : Spell.getAllSpells()){
 			event.getRegistry().registerAll(spell.getSounds());
 		}
 

src/main/java/electroblob/wizardry/spell/ArcaneLock.java

@@ -6,11 +6,13 @@ import electroblob.wizardry.util.NBTExtras;
 import electroblob.wizardry.util.SpellModifiers;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.tileentity.TileEntity;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
@@ -32,9 +34,9 @@ public class ArcaneLock extends SpellRay {
 
 	@Override public boolean requiresPacket(){ return true; }
 
-	@Override public boolean canBeCastByDispensers(){ return false; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser){ return false; }
 
-	@Override public boolean canBeCastByNPCs(){ return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override){ return false; }
 
 	@Override
 	protected boolean onEntityHit(World world, Entity target, Vec3d hit, EntityLivingBase caster, Vec3d origin, int ticksInUse, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/Banish.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.spell;
 
+import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.registry.WizardryItems;
 import electroblob.wizardry.util.ParticleBuilder;
 import electroblob.wizardry.util.ParticleBuilder.Type;
@@ -7,6 +8,7 @@ import electroblob.wizardry.util.SpellModifiers;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumParticleTypes;
@@ -78,9 +80,7 @@ public class Banish extends SpellRay {
 						world.rand.nextDouble() - 0.5, world.rand.nextDouble() - 0.5);
 			}
 
-			// Can't be bothered to route this through the proxies!
+			if(entity instanceof EntityPlayer) Wizardry.proxy.playBlinkEffect((EntityPlayer)entity);
-			if(entity == net.minecraft.client.Minecraft.getMinecraft().player)
-				electroblob.wizardry.client.WizardryClientEventHandler.playBlinkEffect();
 		}
 
 		if(y != null){

src/main/java/electroblob/wizardry/spell/Blink.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.spell;
 
+import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.registry.WizardryItems;
 import electroblob.wizardry.util.RayTracer;
 import electroblob.wizardry.util.SpellModifiers;
@@ -41,9 +42,8 @@ public class Blink extends Spell {
 				world.spawnParticle(EnumParticleTypes.PORTAL, dx, dy, dz, world.rand.nextDouble() - 0.5,
 						world.rand.nextDouble() - 0.5, world.rand.nextDouble() - 0.5);
 			}
-			
+
-			// Can't be bothered to route this through the proxies!
+			Wizardry.proxy.playBlinkEffect(caster);
-			electroblob.wizardry.client.WizardryClientEventHandler.playBlinkEffect();
 		}
 
 		if(rayTrace != null && rayTrace.typeOfHit == RayTraceResult.Type.BLOCK){
@@ -136,7 +136,7 @@ public class Blink extends Spell {
 	}
 
 	@Override
-	public boolean canBeCastByNPCs(){
+	public boolean canBeCastBy(EntityLiving npc, boolean override){
 		return true;
 	}
 

src/main/java/electroblob/wizardry/spell/Clairvoyance.java

@@ -12,6 +12,7 @@ import electroblob.wizardry.registry.WizardryItems;
 import electroblob.wizardry.util.ParticleBuilder;
 import electroblob.wizardry.util.ParticleBuilder.Type;
 import electroblob.wizardry.util.SpellModifiers;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.SharedMonsterAttributes;
 import net.minecraft.entity.monster.EntityZombie;
 import net.minecraft.entity.player.EntityPlayer;
@@ -21,6 +22,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.pathfinding.Path;
 import net.minecraft.pathfinding.PathNodeType;
 import net.minecraft.pathfinding.PathPoint;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.text.TextComponentTranslation;
@@ -44,8 +46,8 @@ public class Clairvoyance extends Spell {
 		WizardData.registerStoredVariables(LOCATION_KEY, DIMENSION_KEY);
 	}
 
-	@Override public boolean canBeCastByNPCs() { return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override) { return false; }
-	@Override public boolean canBeCastByDispensers() { return false; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return false; }
 
 	@Override
 	public boolean cast(World world, EntityPlayer caster, EnumHand hand, int ticksInUse, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/ConjureArmour.java

@@ -3,6 +3,7 @@ package electroblob.wizardry.spell;
 import com.google.common.collect.ImmutableMap;
 import electroblob.wizardry.item.IConjuredItem;
 import electroblob.wizardry.registry.WizardryItems;
+import electroblob.wizardry.util.NBTExtras;
 import electroblob.wizardry.util.SpellModifiers;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.player.EntityPlayer;
@@ -40,7 +41,7 @@ public class ConjureArmour extends SpellConjuration {
 				armour = new ItemStack(SPECTRAL_ARMOUR_MAP.get(slot));
 				IConjuredItem.setDurationMultiplier(armour, modifiers.get(WizardryItems.duration_upgrade));
 				// Sets a blank "ench" tag to trick the renderer into showing the enchantment effect on the armour model
-				armour.getTagCompound().setTag("ench", new NBTTagList());
+				NBTExtras.storeTagSafely(armour.getTagCompound(), "ench", new NBTTagList());
 				caster.setItemStackToSlot(slot, armour);
 				flag = true;
 			}

src/main/java/electroblob/wizardry/spell/CurseOfSoulbinding.java

@@ -9,12 +9,14 @@ import electroblob.wizardry.registry.WizardrySounds;
 import electroblob.wizardry.util.*;
 import electroblob.wizardry.util.ParticleBuilder.Type;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
 import net.minecraft.nbt.NBTTagList;
 import net.minecraft.nbt.NBTUtil;
 import net.minecraft.potion.PotionEffect;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.DamageSource;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
@@ -45,9 +47,9 @@ public class CurseOfSoulbinding extends SpellRay {
 		WizardData.registerStoredVariables(TARGETS_KEY);
 	}
 
-	@Override public boolean canBeCastByNPCs() { return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override) { return false; }
 	// You can't damage a dispenser so this would be nonsense!
-	@Override public boolean canBeCastByDispensers() { return false; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return false; }
 
 	@Override
 	protected boolean onEntityHit(World world, Entity target, Vec3d hit, EntityLivingBase caster, Vec3d origin, int ticksInUse, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/Decoy.java

@@ -21,7 +21,7 @@ public class Decoy extends Spell {
 		addProperties(DECOY_LIFETIME, MOB_TRICK_CHANCE);
 	}
 
-	@Override public boolean canBeCastByNPCs(){ return true; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override){ return true; }
 
 	@Override
 	public boolean cast(World world, EntityPlayer caster, EnumHand hand, int ticksInUse, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/DragonFireball.java

@@ -85,7 +85,7 @@ public class DragonFireball extends Spell {
 	}
 
 	@Override
-	public boolean canBeCastByNPCs(){
+	public boolean canBeCastBy(EntityLiving npc, boolean override){
 		return true;
 	}
 

src/main/java/electroblob/wizardry/spell/EmpoweringPresence.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.spell;
 
+import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.constants.Constants;
 import electroblob.wizardry.event.SpellCastEvent;
 import electroblob.wizardry.registry.WizardryItems;
@@ -66,10 +67,16 @@ public class EmpoweringPresence extends Spell {
 		return true;
 	}
 
+	@Override
+	protected String getTranslationKey(){
+		return Wizardry.tisTheSeason ? super.getTranslationKey() + "_festive" : super.getTranslationKey();
+	}
+
 	@SubscribeEvent(priority = EventPriority.LOW) // Doesn't really matter but there's no point processing it if casting is blocked
 	public static void onSpellCastPreEvent(SpellCastEvent.Pre event){
 		// Empowerment stacks extra potency on top of the existing potency.
-		if(event.getCaster() != null && event.getCaster().isPotionActive(WizardryPotions.empowerment)){
+		if(event.getCaster() != null && event.getCaster().isPotionActive(WizardryPotions.empowerment)
+				&& !(event.getSpell() instanceof EmpoweringPresence)){ // Prevent exponential empowerment stacking!
 
 			float potency = 1 + Constants.EMPOWERMENT_POTENCY_PER_LEVEL
 					* (event.getCaster().getActivePotionEffect(WizardryPotions.empowerment).getAmplifier() + 1);
@@ -78,4 +85,5 @@ public class EmpoweringPresence extends Spell {
 					event.getModifiers().get(SpellModifiers.POTENCY) * potency, true);
 		}
 	}
+
 }

src/main/java/electroblob/wizardry/spell/ForestOfThorns.java

@@ -11,6 +11,7 @@ import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
 import net.minecraft.tileentity.TileEntity;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.BlockPos;
@@ -29,8 +30,8 @@ public class ForestOfThorns extends Spell {
 	}
 
 	@Override public boolean requiresPacket(){ return false; }
-	@Override public boolean canBeCastByNPCs(){ return true; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override){ return true; }
-	@Override public boolean canBeCastByDispensers(){ return true; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser){ return true; }
 
 	@Override
 	public boolean cast(World world, EntityPlayer caster, EnumHand hand, int ticksInUse, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/FrostAxe.java

@@ -11,6 +11,7 @@ public class FrostAxe extends SpellConjuration {
 
 	public FrostAxe(){
 		super("frost_axe", WizardryItems.frost_axe);
+		addProperties(DAMAGE);
 	}
 
 	@Override

src/main/java/electroblob/wizardry/spell/Glide.java

@@ -9,7 +9,6 @@ import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
 import net.minecraft.util.EnumHand;
-import net.minecraft.util.SoundEvent;
 import net.minecraft.world.World;
 
 public class Glide extends Spell {

src/main/java/electroblob/wizardry/spell/Grapple.java

@@ -19,6 +19,7 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.EnumAction;
 import net.minecraft.network.play.server.SPacketEntityVelocity;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.SoundEvent;
@@ -58,12 +59,12 @@ public class Grapple extends Spell {
 	}
 
 	@Override
-	public boolean canBeCastByNPCs(){
+	public boolean canBeCastBy(EntityLiving npc, boolean override){
-		return super.canBeCastByNPCs();
+		return true;
 	}
 
 	@Override
-	public boolean canBeCastByDispensers(){
+	public boolean canBeCastBy(TileEntityDispenser dispenser){
 		return true;
 	}
 

src/main/java/electroblob/wizardry/spell/GreaterTelekinesis.java

@@ -9,12 +9,14 @@ import electroblob.wizardry.util.ParticleBuilder.Type;
 import electroblob.wizardry.util.SpellModifiers;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.item.EntityTNTPrimed;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.EnumAction;
 import net.minecraft.network.play.server.SPacketEntityVelocity;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.SoundEvent;
 import net.minecraft.util.math.BlockPos;
@@ -41,8 +43,8 @@ public class GreaterTelekinesis extends SpellRay {
 		this.soundValues(0.8f, 1, 0.2f);
 	}
 
-	@Override public boolean canBeCastByNPCs() { return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override) { return false; }
-	@Override public boolean canBeCastByDispensers() { return false; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return false; }
 
 	@Override
 	protected SoundEvent[] createSounds(){

src/main/java/electroblob/wizardry/spell/InvigoratingPresence.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.spell;
 
+import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.registry.WizardryItems;
 import electroblob.wizardry.util.AllyDesignationSystem;
 import electroblob.wizardry.util.ParticleBuilder;
@@ -62,4 +63,9 @@ public class InvigoratingPresence extends Spell {
 		return true;
 	}
 
+	@Override
+	protected String getTranslationKey(){
+		return Wizardry.tisTheSeason ? super.getTranslationKey() + "_festive" : super.getTranslationKey();
+	}
+
 }

src/main/java/electroblob/wizardry/spell/Metamorphosis.java

@@ -10,6 +10,7 @@ import electroblob.wizardry.util.ParticleBuilder.Type;
 import electroblob.wizardry.util.SpellModifiers;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.monster.*;
 import net.minecraft.entity.passive.*;
@@ -52,7 +53,7 @@ public class Metamorphosis extends SpellRay {
 		this.soundValues(0.5f, 1f, 0);
 	}
 	
-	@Override public boolean canBeCastByNPCs() { return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override) { return false; }
 
 	@Override
 	protected boolean onEntityHit(World world, Entity target, Vec3d hit, EntityLivingBase caster, Vec3d origin, int ticksInUse, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/MindControl.java

@@ -19,6 +19,7 @@ import net.minecraft.item.EnumAction;
 import net.minecraft.item.EnumDyeColor;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.potion.PotionEffect;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
@@ -43,8 +44,8 @@ public class MindControl extends SpellRay {
 		addProperties(EFFECT_DURATION);
 	}
 	
-	@Override public boolean canBeCastByNPCs() { return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override) { return false; }
-	@Override public boolean canBeCastByDispensers() { return false; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return false; }
 	
 	@Override
 	protected boolean onEntityHit(World world, Entity target, Vec3d hit, EntityLivingBase caster, Vec3d origin, int ticksInUse, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/PhaseStep.java

@@ -43,8 +43,7 @@ public class PhaseStep extends Spell {
 						world.rand.nextDouble() - 0.5, world.rand.nextDouble() - 0.5);
 			}
 
-			// Can't be bothered to route this through the proxies!
+			Wizardry.proxy.playBlinkEffect(caster);
-			electroblob.wizardry.client.WizardryClientEventHandler.playBlinkEffect();
 		}
 
 		if(rayTrace != null && rayTrace.typeOfHit == RayTraceResult.Type.BLOCK){

src/main/java/electroblob/wizardry/spell/Poison.java

@@ -8,6 +8,7 @@ import electroblob.wizardry.util.ParticleBuilder.Type;
 import electroblob.wizardry.util.SpellModifiers;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.init.MobEffects;
@@ -28,7 +29,7 @@ public class Poison extends SpellRay {
 	}
 
 	@Override
-	public boolean canBeCastByNPCs(){
+	public boolean canBeCastBy(EntityLiving npc, boolean override){
 		return true;
 	}
 

src/main/java/electroblob/wizardry/spell/Possession.java

@@ -16,6 +16,7 @@ import electroblob.wizardry.packet.PacketPossession;
 import electroblob.wizardry.packet.WizardryPacketHandler;
 import electroblob.wizardry.registry.Spells;
 import electroblob.wizardry.registry.WizardryItems;
+import electroblob.wizardry.util.NBTExtras;
 import electroblob.wizardry.util.ParticleBuilder;
 import electroblob.wizardry.util.ParticleBuilder.Type;
 import electroblob.wizardry.util.SpellModifiers;
@@ -43,6 +44,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagList;
 import net.minecraft.potion.PotionEffect;
 import net.minecraft.potion.PotionUtils;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.*;
 import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
@@ -123,8 +125,8 @@ public class Possession extends SpellRay {
 		addProperties(EFFECT_DURATION, CRITICAL_HEALTH);
 	}
 
-	@Override public boolean canBeCastByNPCs() { return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override) { return false; }
-	@Override public boolean canBeCastByDispensers() { return false; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return false; }
 
 	@Override
 	public boolean requiresPacket(){
@@ -267,7 +269,7 @@ public class Possession extends SpellRay {
 				// Inventory and items
 
 				if(possessor.getEntityData() != null){
-					possessor.getEntityData().setTag(INVENTORY_NBT_KEY, possessor.inventory.writeToNBT(new NBTTagList()));
+					NBTExtras.storeTagSafely(possessor.getEntityData(), INVENTORY_NBT_KEY, possessor.inventory.writeToNBT(new NBTTagList()));
 				}
 
 				possessor.inventory.clear();

src/main/java/electroblob/wizardry/spell/ReplenishHunger.java

@@ -1,6 +1,7 @@
 package electroblob.wizardry.spell;
 
 import electroblob.wizardry.util.SpellModifiers;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.util.EnumHand;
@@ -17,7 +18,7 @@ public class ReplenishHunger extends SpellBuff {
 		addProperties(HUNGER_POINTS, SATURATION_MODIFIER);
 	}
 	
-	@Override public boolean canBeCastByNPCs(){ return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override){ return false; }
 	
 	@Override
 	protected boolean applyEffects(EntityLivingBase caster, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/Resurrection.java

@@ -25,6 +25,8 @@ public class Resurrection extends Spell {
 
 	public static final String WAIT_TIME = "wait_time";
 
+	private static final String POTION_CORE_FIX_NBT_KEY = "Potion Core - Health Fix";
+
 	public Resurrection(){
 		super("resurrection", EnumAction.NONE, false);
 		addProperties(EFFECT_RADIUS, WAIT_TIME);
@@ -90,6 +92,8 @@ public class Resurrection extends Spell {
 		player.experience = 0;
 		player.experienceLevel = 0;
 		player.experienceTotal = 0;
+		// Not sure what potion core is 'fixing' but it breaks my resurrection, so let's unfix it!
+		player.getEntityData().removeTag(POTION_CORE_FIX_NBT_KEY);
 
 		if(player.world.isRemote){
 			ParticleBuilder.spawnHealParticles(player.world, player);

src/main/java/electroblob/wizardry/spell/Reversal.java

@@ -8,6 +8,7 @@ import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.item.EnumAction;
 import net.minecraft.potion.PotionEffect;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
@@ -28,7 +29,7 @@ public class Reversal extends SpellRay {
 	}
 
 	@Override
-	public boolean canBeCastByDispensers(){
+	public boolean canBeCastBy(TileEntityDispenser dispenser){
 		return false;
 	}
 

src/main/java/electroblob/wizardry/spell/Satiety.java

@@ -1,6 +1,7 @@
 package electroblob.wizardry.spell;
 
 import electroblob.wizardry.util.SpellModifiers;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.util.EnumHand;
@@ -17,7 +18,7 @@ public class Satiety extends SpellBuff {
 		addProperties(HUNGER_POINTS, SATURATION_MODIFIER);
 	}
 	
-	@Override public boolean canBeCastByNPCs(){ return false; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override){ return false; }
 	
 	@Override
 	protected boolean applyEffects(EntityLivingBase caster, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/ShulkerBullet.java

@@ -1,6 +1,7 @@
 package electroblob.wizardry.spell;
 
 import electroblob.wizardry.registry.WizardryItems;
+import electroblob.wizardry.util.NBTExtras;
 import electroblob.wizardry.util.SpellModifiers;
 import electroblob.wizardry.util.WizardryUtilities;
 import net.minecraft.entity.Entity;
@@ -12,6 +13,7 @@ import net.minecraft.entity.projectile.EntityShulkerBullet;
 import net.minecraft.item.EnumAction;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.nbt.NBTUtil;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.BlockPos;
@@ -29,9 +31,9 @@ public class ShulkerBullet extends Spell {
 		addProperties(RANGE);
 	}
 
-	@Override public boolean canBeCastByNPCs(){ return true; }
+	@Override public boolean canBeCastBy(EntityLiving npc, boolean override){ return true; }
 
-	@Override public boolean canBeCastByDispensers(){ return true; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser){ return true; }
 
 	@Override
 	public boolean cast(World world, EntityPlayer caster, EnumHand hand, int ticksInUse, SpellModifiers modifiers){
@@ -89,7 +91,7 @@ public class ShulkerBullet extends Spell {
 				targetTag.setInteger("X", pos.getX());
 				targetTag.setInteger("Y", pos.getY());
 				targetTag.setInteger("Z", pos.getZ());
-				nbt.setTag("Target", targetTag);
+				NBTExtras.storeTagSafely(nbt, "Target", targetTag);
 				bullet.readFromNBT(nbt); // LOL I just modified private fields without reflection
 
 				world.spawnEntity(bullet);

src/main/java/electroblob/wizardry/spell/SlowTime.java

@@ -3,7 +3,9 @@ package electroblob.wizardry.spell;
 import electroblob.wizardry.Wizardry;
 import electroblob.wizardry.registry.WizardryPotions;
 import electroblob.wizardry.util.SpellModifiers;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.World;
@@ -35,12 +37,12 @@ public class SlowTime extends SpellBuff {
 	}
 
 	@Override
-	public boolean canBeCastByDispensers(){
+	public boolean canBeCastBy(TileEntityDispenser dispenser){
 		return false;
 	}
 
 	@Override
-	public boolean canBeCastByNPCs(){
+	public boolean canBeCastBy(EntityLiving npc, boolean override){
 		return false;
 	}
 }

src/main/java/electroblob/wizardry/spell/Snowball.java

@@ -1,45 +0,0 @@
-package electroblob.wizardry.spell;
-
-import electroblob.wizardry.registry.WizardryItems;
-import electroblob.wizardry.util.SpellModifiers;
-import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.entity.projectile.EntitySnowball;
-import net.minecraft.item.EnumAction;
-import net.minecraft.util.EnumHand;
-import net.minecraft.util.math.MathHelper;
-import net.minecraft.world.World;
-
-public class Snowball extends Spell {
-
-	public Snowball(){
-		super("snowball", EnumAction.NONE, false);
-		addProperties(RANGE);
-		soundValues(0.5f, 0.4f, 0.2f);
-	}
-
-	@Override
-	public boolean requiresPacket(){
-		return false;
-	}
-
-	@Override
-	public boolean cast(World world, EntityPlayer caster, EnumHand hand, int ticksInUse, SpellModifiers modifiers){
-
-		if(!world.isRemote){
-			// Trajectory calculation - see SpellProjectile for a more detailed explanation
-			float g = 0.03f;
-			float launchHeight = caster.getEyeHeight();
-			float range = getProperty(RANGE).floatValue() * modifiers.get(WizardryItems.range_upgrade);
-			float velocity = MathHelper.sqrt(MathHelper.sqrt(g*g * (launchHeight*launchHeight + range*range)) - g*launchHeight);
-
-			EntitySnowball snowball = new EntitySnowball(world, caster);
-			snowball.shoot(caster, caster.rotationPitch, caster.rotationYaw, 0.0f, velocity, 1.0f);
-			world.spawnEntity(snowball);
-		}
-
-		this.playSound(world, caster, ticksInUse, -1, modifiers);
-		caster.swingArm(hand);
-		return true;
-	}
-
-}

src/main/java/electroblob/wizardry/spell/Spell.java

@@ -20,6 +20,7 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.EnumAction;
 import net.minecraft.item.Item;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.ResourceLocation;
@@ -42,6 +43,7 @@ import net.minecraftforge.registries.IForgeRegistryEntry;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.util.*;
+import java.util.function.BiPredicate;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
 
@@ -149,6 +151,17 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	/** The pitch variation of the sound played when this spell is cast. Defaults to 0. */
 	protected float pitchVariation = 0;
 
+	// The following two fields are supposed to eliminate the need for boilerplate classes in spell packs.
+	// As an example, spells in the twilight forest spell pack only appear on custom spell book and scroll items and
+	// NPCs can only cast them if they spawned in the twilight forest. Without these convenience fields, spells that
+	// would not otherwise require their own classes have to have one just so they can override those two behaviours.
+
+	/** List of items for which this spell is applicable (used by default behaviour of {@link Spell#applicableForItem(Item)}). */
+	protected Item[] applicableItems;
+	/** Predicate that specifies a condition that NPCs must satisfy in order to spawn with this spell equipped (used by
+	 * default behaviour of {@link Spell#canBeCastBy(EntityLiving, boolean)}). */
+	protected BiPredicate<EntityLiving, Boolean> npcSelector; // Kinda ugly but it's better than boilerplate classes
+
 	private static int nextSpellId = 0;
 	/** The spell's integer ID, mainly used for networking. */
 	// This was added after I learnt the hard way why you can't assume Forge's registry IDs are sequential...
@@ -186,6 +199,8 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 		this.icon = new ResourceLocation(modID, "textures/spells/" + name + ".png");
 		this.sounds = createSounds();
 		this.id = nextSpellId++;
+		this.items(WizardryItems.spell_book, WizardryItems.scroll);
+		this.npcSelector((e, o) -> canBeCastByNPCs()); // Fallback to old behaviour until we remove it entirely
 	}
 
 	// ========================================= Initialisation methods ===========================================
@@ -204,7 +219,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 * @see Spell#playSound(World, double, double, double, int, int, SpellModifiers, String...)
 	 */
 	protected SoundEvent[] createSounds(){
-		return new SoundEvent[]{WizardrySounds.createSound("spell." + this.getRegistryName().getPath())};
+		return new SoundEvent[]{WizardrySounds.createSound(this.getRegistryName().getNamespace(), "spell." + this.getRegistryName().getPath())};
 	}
 
 	// Note 1: The aim here is conciseness. Keeping the identifiers in the spell classes means we don't usually have to
@@ -294,7 +309,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 * @see Spell#createSoundsWithSuffixes(String[])
 	 */
 	public final SoundEvent createSoundWithSuffix(String suffix){
-		return WizardrySounds.createSound("spell." + this.getRegistryName().getPath() + "." + suffix);
+		return WizardrySounds.createSound(this.getRegistryName().getNamespace(), "spell." + this.getRegistryName().getPath() + "." + suffix);
 	}
 
 	/**
@@ -354,7 +369,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 * work if the caster is on full health).
 	 * <p></p>
 	 * This method is intended for use by NPCs (see {@link EntityWizard}) so that they can cast spells. Override it if
-	 * you want a spell to be cast by wizards. Note that you must also override {@link Spell#canBeCastByNPCs()} to
+	 * you want a spell to be cast by wizards. Note that you must also override {@link Spell#canBeCastBy(EntityLiving, boolean)} to
 	 * return true to allow wizards to select the spell. For some spells, this method may well be exactly the same as
 	 * the regular cast method; for others it won't be - for example, projectile-based spells are normally done using
 	 * the player's look vector, but NPCs need to use a target-based method instead.
@@ -390,7 +405,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 * won't work if the caster is on full health).
 	 * <p></p>
 	 * This method is intended for use by dispensers and command blocks so that they can cast spells. Override it if
-	 * you want a spell to be cast by dispensers. Note that you must also override {@link Spell#canBeCastByDispensers()} to
+	 * you want a spell to be cast by dispensers. Note that you must also override {@link Spell#canBeCastBy(TileEntityDispenser)} to
 	 * return true to allow dispensers to select the spell. For some spells, this method may well be exactly the same as
 	 * the regular cast method; for others it won't be - for example, projectile-based spells are normally done using
 	 * the player's look vector, but dispensers need to use a facing-based method instead.
@@ -446,20 +461,50 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	public void finishCasting(World world, @Nullable EntityLivingBase caster, double x, double y, double z,
 							  @Nullable EnumFacing direction, int duration, SpellModifiers modifiers){}
 
+	/**
+	 * Whether the given entity can cast this spell. If you have overridden
+	 * {@link Spell#cast(World, EntityLiving, EnumHand, int, EntityLivingBase, SpellModifiers)}, you should override
+	 * this to return true (either always or under certain circumstances), or alternatively assign an NPC selector via
+	 * {@link Spell#npcSelector(BiPredicate)} (recommended for general spell classes).
+	 * @param npc The entity to query.
+	 * @param override True if a player in creative mode is assigning this spell to the given entity, false otherwise.
+	 *                 Usually this means situational conditions should be ignored.
+	 */
+	// We could make this final and force everyone to move over to the predicate system, but for particularly complex
+	// behaviour (i.e. several lines of code) it gets too ugly, and then you end up moving the contents of the predicate
+	// to a static method anyway and referring to it via method reference... so we may as well leave people the option.
+	public boolean canBeCastBy(EntityLiving npc, boolean override){
+		return npcSelector.test(npc, override);
+	}
+
 	/**
 	 * Whether NPCs such as wizards can cast this spell. If you have overridden
 	 * {@link Spell#cast(World, EntityLiving, EnumHand, int, EntityLivingBase, SpellModifiers)}, you should override
 	 * this to return true.
+	 * @deprecated Use the entity-sensitive version {@link Spell#canBeCastBy(EntityLiving, boolean)}.
 	 */
+	@Deprecated
 	public boolean canBeCastByNPCs(){
 		return false;
 	}
 
+	/**
+	 * Whether the given dispenser can cast this spell. If you have overridden
+	 * {@link Spell#cast(World, double, double, double, EnumFacing, int, int, SpellModifiers)}, you should override this
+	 * to return true (either always or under certain circumstances).
+	 * @param dispenser The dispenser to query.
+	 */
+	public boolean canBeCastBy(TileEntityDispenser dispenser){
+		return canBeCastByDispensers();
+	}
+
 	/**
 	 * Whether dispensers can cast this spell. If you have overridden
 	 * {@link Spell#cast(World, double, double, double, EnumFacing, int, int, SpellModifiers)}, you should override this
 	 * to return true.
+	 * @deprecated Use the tileentity-sensitive version {@link Spell#canBeCastBy(TileEntityDispenser)}.
 	 */
+	@Deprecated
 	public boolean canBeCastByDispensers(){
 		return false;
 	}
@@ -561,26 +606,6 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 		return properties.getBaseValue(identifier);
 	}
 
-	/** Returns whether the spell is enabled in any of the given {@link electroblob.wizardry.util.SpellProperties.Context Context}s.
-	 * A spell may be disabled globally in the config, or it may be disabled for one or more specific contexts in
-	 * its JSON file using a resource pack. If called with no arguments, defaults to any context, i.e. only returns
-	 * false if the spell is completely disabled in all contexts. */
-	public final boolean isEnabled(SpellProperties.Context... contexts){
-		return enabled && (contexts.length == 0 || properties.isEnabled(contexts));
-	}
-
-	/** Sets whether the spell is enabled or not. */
-	public final void setEnabled(boolean isEnabled){
-		this.enabled = isEnabled;
-	}
-
-	/** Returns true if the given item has a variant for this spell. By default, returns true if the given item is
-	 * either {@link WizardryItems#spell_book} or {@link WizardryItems#scroll}. Override to give the spell a special
-	 * type of book or scroll. */
-	public boolean applicableForItem(Item item){
-		return item == WizardryItems.spell_book || item == WizardryItems.scroll;
-	}
-
 	/**
 	 * Returns the unlocalised name of the spell, without any prefixes or suffixes, e.g. "flame_ray". <b>This should
 	 * only be used for translation purposes.</b>
@@ -597,13 +622,23 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 * translating it. If, for whatever reason, you need to supply an ITextComponent but don't want it translated
 	 * (perhaps a name?), you can use TextComponentString, which will simply keep the raw string it is given. */
 
+	/** Returns the translation key for this spell. */
+	protected String getTranslationKey(){
+		return "spell." + unlocalisedName;
+	}
+
+	/** Returns the translation key for this spell's description. */
+	protected String getDescriptionTranslationKey(){
+		return "spell." + unlocalisedName + ".desc";
+	}
+
 	/**
 	 * Returns the translated display name of the spell, without formatting (i.e. not coloured). <b>Client-side
 	 * only!</b> On the server side, use {@link TextComponentTranslation} (see {@link Spell#getNameForTranslation()}).
 	 */
 	@SideOnly(Side.CLIENT)
 	public String getDisplayName(){
-		return net.minecraft.client.resources.I18n.format("spell." + unlocalisedName);
+		return net.minecraft.client.resources.I18n.format(getTranslationKey());
 	}
 
 	/**
@@ -611,7 +646,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 * formatting (i.e. not coloured).
 	 */
 	public ITextComponent getNameForTranslation(){
-		return new TextComponentTranslation("spell." + unlocalisedName);
+		return new TextComponentTranslation(getTranslationKey());
 	}
 
 	/**
@@ -620,7 +655,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 */
 	@SideOnly(Side.CLIENT)
 	public String getDisplayNameWithFormatting(){
-		return this.getElement().getFormattingCode() + net.minecraft.client.resources.I18n.format("spell." + unlocalisedName);
+		return this.getElement().getFormattingCode() + net.minecraft.client.resources.I18n.format(getTranslationKey());
 	}
 
 	/**
@@ -628,7 +663,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 * formatting (i.e. coloured).
 	 */
 	public ITextComponent getNameForTranslationFormatted(){
-		return new TextComponentTranslation("spell." + unlocalisedName).setStyle(this.getElement().getColour());
+		return new TextComponentTranslation(getTranslationKey()).setStyle(this.getElement().getColour());
 	}
 
 	/**
@@ -637,7 +672,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	 */
 	@SideOnly(Side.CLIENT)
 	public String getDescription(){
-		return net.minecraft.client.resources.I18n.format("spell." + unlocalisedName + ".desc");
+		return net.minecraft.client.resources.I18n.format(getDescriptionTranslationKey());
 	}
 
 	// ============================================ Sound methods ==============================================
@@ -757,6 +792,51 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 		}
 	}
 
+	// ============================================= Misc methods ===============================================
+
+	/** Returns whether the spell is enabled in any of the given {@link electroblob.wizardry.util.SpellProperties.Context Context}s.
+	 * A spell may be disabled globally in the config, or it may be disabled for one or more specific contexts in
+	 * its JSON file using a resource pack. If called with no arguments, defaults to any context, i.e. only returns
+	 * false if the spell is completely disabled in all contexts. */
+	public final boolean isEnabled(SpellProperties.Context... contexts){
+		return enabled && (contexts.length == 0 || properties.isEnabled(contexts));
+	}
+
+	/** Sets whether the spell is enabled or not. */
+	public final void setEnabled(boolean isEnabled){
+		this.enabled = isEnabled;
+	}
+
+	/** Returns true if the given item has a variant for this spell. By default, returns true if the given item is
+	 * in this spell's {@link Spell#applicableItems} list (set using {@link Spell#items(Item...)}). Override to do
+	 * something more complex. */
+	public boolean applicableForItem(Item item){
+		return Arrays.asList(applicableItems).contains(item);
+	}
+
+	/**
+	 * Sets which items this spell can appear on (these default to the regular spell book and scroll).
+	 * @param applicableItems The items this spell should naturally appear on (or no items at all).
+	 * @return The spell instance, allowing this method to be chained onto the constructor. Note that since this method
+	 * only returns a {@code Spell}, if you are chaining multiple methods onto the constructor this should be called last.
+	 */
+	public Spell items(Item... applicableItems){
+		this.applicableItems = applicableItems;
+		return this;
+	}
+
+	/**
+	 * Specifies a condition that NPCs must satisfy in order to spawn with this spell equipped (this defaults to always
+	 * true).
+	 * @param selector A condition that NPCs must satisfy in order to spawn with this spell equipped.
+	 * @return The spell instance, allowing this method to be chained onto the constructor. Note that since this method
+	 * only returns a {@code Spell}, if you are chaining multiple methods onto the constructor this should be called last.
+	 */
+	public Spell npcSelector(BiPredicate<EntityLiving, Boolean> selector){
+		this.npcSelector = selector;
+		return this;
+	}
+
 	// Spells are sorted according to tier and element. Where several spells have the same tier and element,
 	// they will remain in the order they were registered.
 	@Override
@@ -775,7 +855,7 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 
 	/**
 	 * Returns the total number of registered spells, excluding the 'None' spell. Returns the same number that would be
-	 * returned by {@code Spell.getSpells(Spell.allSpells).size()}, but this method is more efficient.
+	 * returned by {@code Spell.getAllSpells().size()}, but this method is more efficient.
 	 */
 	public static int getTotalSpellCount(){
 		return registry.getValuesCollection().size() - 1;
@@ -823,31 +903,37 @@ public abstract class Spell extends IForgeRegistryEntry.Impl<Spell> implements C
 	/**
 	 * Returns a list containing all spells matching the given {@link Predicate}. The returned list is separate from the
 	 * internal spells list; any changes you make to the returned list will have no effect on wizardry since the
-	 * returned list is local to this method. Never includes the {@link None} spell. For convenience, there are some
+	 * returned list is local to this method. Never includes the {@link None} spell.
-	 * predefined predicates in the Spell class (some of these really aren't shortcuts any more):
-	 * <p></p>
-	 * {@link Spell#allSpells} will allow all spells to be returned<br>
-	 * {@link Spell#npcSpells} will only allow enabled spells that can be cast by NPCs (see
-	 * {@link Spell#canBeCastByNPCs()})<br>
-	 * {@link Spell#nonContinuousSpells} will filter out continuous spells but not disabled spells<br>
-	 * {@link TierElementFilter} will only allow enabled spells of the specified tier and element
 	 *
 	 * @param filter A <code>Predicate&ltSpell&gt</code> that the returned spells must satisfy.
 	 *
 	 * @return A <b>local, modifiable</b> list of spells matching the given predicate. <i>Note that this list may be
 	 *         empty.</i>
+	 *
+	 * @see TierElementFilter
 	 */
 	public static List<Spell> getSpells(Predicate<Spell> filter){
 		return registry.getValuesCollection().stream().filter(filter.and(s -> s != Spells.none)).collect(Collectors.toList());
 	}
 
-	/** Predicate which allows all spells. */
+	/** Returns all registered spells, except the {@link None} spell. */
+	public static List<Spell> getAllSpells(){
+		return getSpells(s -> true);
+	}
+
+	/** Predicate which allows all spells.
+	 * @deprecated Use {@link Spell#getAllSpells()}. */
+	@Deprecated
 	public static Predicate<Spell> allSpells = s -> true;
 
-	/** Predicate which allows all non-continuous spells, even those that have been disabled. */
+	/** Predicate which allows all non-continuous spells, even those that have been disabled.
+	 * @deprecated Nobody ever uses this now we have continuous scrolls, if you really need it just use a lambda.  */
+	@Deprecated
 	public static Predicate<Spell> nonContinuousSpells = s -> !s.isContinuous;
 
-	/** Predicate which allows all enabled spells for which {@link Spell#canBeCastByNPCs()} returns true. */
+	/** Predicate which allows all enabled spells for which {@link Spell#canBeCastBy(EntityLiving, boolean)} returns true.
+	 * @deprecated in favour of entity-sensitive version, use a lambda expression directly. */
+	@Deprecated
 	public static Predicate<Spell> npcSpells = s -> s.isEnabled(SpellProperties.Context.NPCS) && s.canBeCastByNPCs();
 
 	/**

src/main/java/electroblob/wizardry/spell/SpellArrow.java

@@ -11,6 +11,7 @@ import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.MathHelper;
@@ -29,9 +30,9 @@ import java.util.function.Function;
  * <p></p>
  * Properties added by this type of spell: {@link Spell#RANGE}
  * <p></p>
- * By default, this type of spell can be cast by NPCs. {@link Spell#canBeCastByNPCs()}
+ * By default, this type of spell can be cast by NPCs. {@link Spell#canBeCastBy(EntityLiving, boolean)}
  * <p></p>
- * By default, this type of spell can be cast by dispensers. {@link Spell#canBeCastByDispensers()}
+ * By default, this type of spell can be cast by dispensers. {@link Spell#canBeCastBy(TileEntityDispenser)}
  * <p></p>
  * By default, this type of spell does not require a packet to be sent. {@link Spell#requiresPacket()}
  * 
@@ -58,13 +59,12 @@ public class SpellArrow<T extends EntityMagicArrow> extends Spell {
 		super(modID, name, EnumAction.NONE, false);
 		this.arrowFactory = arrowFactory;
 		this.addProperties(RANGE);
+		this.npcSelector((e, o) -> true);
 	}
 	
 	@Override public boolean requiresPacket(){ return false; }
 	
-	@Override public boolean canBeCastByNPCs(){ return true; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return true; }
-	
-	@Override public boolean canBeCastByDispensers() { return true; }
 
 	/** Computes the velocity the projectile should be launched at to achieve the required range. */
 	// Long story short, it doesn't make much sense to me to have the JSON file specify the velocity - even less so if

src/main/java/electroblob/wizardry/spell/SpellBuff.java

@@ -11,6 +11,7 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
 import net.minecraft.potion.Potion;
 import net.minecraft.potion.PotionEffect;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.AxisAlignedBB;
@@ -32,9 +33,9 @@ import java.util.stream.Collectors;
  * <p></p>
  * Properties added by this type of spell: {@link SpellBuff#getDurationKey(Potion)}, {@link SpellBuff#getStrengthKey(Potion)}
  * <p></p>
- * By default, this type of spell can be cast by NPCs. {@link Spell#canBeCastByNPCs()}
+ * By default, this type of spell can be cast by NPCs. {@link Spell#canBeCastBy(EntityLiving, boolean)}
  * <p></p>
- * By default, this type of spell can be cast by dispensers. {@link Spell#canBeCastByDispensers()}
+ * By default, this type of spell can be cast by dispensers. {@link Spell#canBeCastBy(TileEntityDispenser)}
  * <p></p>
  * By default, this type of spell requires a packet to be sent. {@link Spell#requiresPacket()}
  * 
@@ -67,6 +68,7 @@ public class SpellBuff extends Spell {
 		this.r = r;
 		this.g = g;
 		this.b = b;
+		this.npcSelector((e, o) -> true);
 	}
 
 	@Override
@@ -103,9 +105,7 @@ public class SpellBuff extends Spell {
 		return this;
 	}
 	
-	@Override public boolean canBeCastByNPCs(){ return true; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return true; }
-	
-	@Override public boolean canBeCastByDispensers() { return true; }
 
 	@Override
 	public boolean cast(World world, EntityPlayer caster, EnumHand hand, int ticksInUse, SpellModifiers modifiers){

src/main/java/electroblob/wizardry/spell/SpellConjuration.java

@@ -24,9 +24,9 @@ import net.minecraft.world.World;
  * <p></p>
  * Properties added by this type of spell: {@link SpellConjuration#ITEM_LIFETIME}
  * <p></p>
- * By default, this type of spell cannot be cast by NPCs. {@link Spell#canBeCastByNPCs()}
+ * By default, this type of spell cannot be cast by NPCs. {@link Spell#canBeCastBy(net.minecraft.entity.EntityLiving, boolean)}
  * <p></p>
- * By default, this type of spell cannot be cast by dispensers. {@link Spell#canBeCastByDispensers()}
+ * By default, this type of spell cannot be cast by dispensers. {@link Spell#canBeCastBy(net.minecraft.tileentity.TileEntityDispenser)}
  * <p></p>
  * By default, this type of spell requires a packet to be sent. {@link Spell#requiresPacket()}
  * 

src/main/java/electroblob/wizardry/spell/SpellConstruct.java

@@ -9,6 +9,7 @@ import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.BlockPos;
@@ -29,9 +30,9 @@ import java.util.function.Function;
  * <p></p>
  * Properties added by this type of spell: {@link Spell#DURATION} (if the construct is not permanent)
  * <p></p>
- * By default, this type of spell can be cast by NPCs. {@link Spell#canBeCastByNPCs()}
+ * By default, this type of spell can be cast by NPCs. {@link Spell#canBeCastBy(EntityLiving, boolean)}
  * <p></p>
- * By default, this type of spell can be cast by dispensers. {@link Spell#canBeCastByDispensers()}
+ * By default, this type of spell can be cast by dispensers. {@link Spell#canBeCastBy(TileEntityDispenser)}
  * <p></p>
  * By default, this type of spell does not require a packet to be sent. {@link Spell#requiresPacket()}
  * 
@@ -58,14 +59,13 @@ public class SpellConstruct<T extends EntityMagicConstruct> extends Spell {
 		super(modID, name, action, false);
 		this.constructFactory = constructFactory;
 		this.permanent = permanent;
+		this.npcSelector((e, o) -> true);
 		if(!permanent) this.addProperties(DURATION);
 	}
 	
 	@Override public boolean requiresPacket(){ return false; }
-
-	@Override public boolean canBeCastByNPCs(){ return true; }
 	
-	@Override public boolean canBeCastByDispensers() { return true; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return true; }
 	
 	/**
 	 * Sets whether the construct must be spawned on the ground.

src/main/java/electroblob/wizardry/spell/SpellConstructRanged.java

@@ -10,6 +10,7 @@ import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.EnumAction;
+import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.math.BlockPos;
@@ -30,9 +31,9 @@ import java.util.function.Function;
  * Properties added by this type of spell: {@link Spell#RANGE}, {@link Spell#DURATION} (if the construct is not
  * permanent)
  * <p></p>
- * By default, this type of spell can be cast by NPCs. {@link Spell#canBeCastByNPCs()}
+ * By default, this type of spell can be cast by NPCs. {@link Spell#canBeCastBy(EntityLiving, boolean)}
  * <p></p>
- * By default, this type of spell can be cast by dispensers. {@link Spell#canBeCastByDispensers()}
+ * By default, this type of spell can be cast by dispensers. {@link Spell#canBeCastBy(TileEntityDispenser)}
  * <p></p>
  * By default, this type of spell does not require a packet to be sent. {@link Spell#requiresPacket()}
  * 
@@ -54,6 +55,7 @@ public class SpellConstructRanged<T extends EntityMagicConstruct> extends SpellC
 	public SpellConstructRanged(String modID, String name, Function<World, T> constructFactory, boolean permanent){
 		super(modID, name, EnumAction.NONE, constructFactory, permanent);
 		this.addProperties(RANGE);
+		this.npcSelector((e, o) -> true);
 	}
 
 	/**
@@ -79,10 +81,8 @@ public class SpellConstructRanged<T extends EntityMagicConstruct> extends SpellC
 	}
 
 	@Override public boolean requiresPacket(){ return false; }
-
-	@Override public boolean canBeCastByNPCs(){ return true; }
 	
-	@Override public boolean canBeCastByDispensers() { return true; }
+	@Override public boolean canBeCastBy(TileEntityDispenser dispenser) { return true; }
 	
 	@Override
 	public boolean cast(World world, EntityPlayer caster, EnumHand hand, int ticksInUse, SpellModifiers modifiers){