Files
Wizardry/src/main/java/electroblob/wizardry/WizardryEventHandler.java
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2018-03-09 11:56:31 +01:00

457 lines
20 KiB
Java

package electroblob.wizardry;
import electroblob.wizardry.advancement.AdvancementHelper;
import electroblob.wizardry.advancement.AdvancementHelper.EnumAdvancement;
import electroblob.wizardry.constants.Constants;
import electroblob.wizardry.entity.EntityArc;
import electroblob.wizardry.entity.living.EntityEvilWizard;
import electroblob.wizardry.entity.living.ISpellCaster;
import electroblob.wizardry.entity.living.ISummonedCreature;
import electroblob.wizardry.event.DiscoverSpellEvent;
import electroblob.wizardry.event.SpellCastEvent;
import electroblob.wizardry.item.ItemWand;
import electroblob.wizardry.item.ItemWizardArmour;
import electroblob.wizardry.registry.Spells;
import electroblob.wizardry.registry.WizardryEnchantments;
import electroblob.wizardry.registry.WizardryItems;
import electroblob.wizardry.registry.WizardryPotions;
import electroblob.wizardry.registry.WizardrySounds;
import electroblob.wizardry.spell.FreezingWeapon;
import electroblob.wizardry.spell.Spell;
import electroblob.wizardry.util.IElementalDamage;
import electroblob.wizardry.util.MagicDamage;
import electroblob.wizardry.util.MagicDamage.DamageType;
import electroblob.wizardry.util.SpellModifiers;
import electroblob.wizardry.util.WandHelper;
import electroblob.wizardry.util.WizardryParticleType;
import electroblob.wizardry.util.WizardryUtilities;
import net.minecraft.enchantment.EnchantmentHelper;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.monster.IMob;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.entity.projectile.EntityArrow;
import net.minecraft.init.SoundEvents;
import net.minecraft.inventory.ContainerPlayer;
import net.minecraft.inventory.ContainerWorkbench;
import net.minecraft.inventory.IInventory;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemSword;
import net.minecraft.potion.PotionEffect;
import net.minecraft.util.EnumHand;
import net.minecraft.util.EnumParticleTypes;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.text.TextComponentTranslation;
import net.minecraft.world.World;
import net.minecraft.world.storage.loot.LootEntry;
import net.minecraft.world.storage.loot.LootEntryTable;
import net.minecraft.world.storage.loot.LootPool;
import net.minecraft.world.storage.loot.RandomValueRange;
import net.minecraft.world.storage.loot.conditions.LootCondition;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.LootTableLoadEvent;
import net.minecraftforge.event.entity.living.LivingAttackEvent;
import net.minecraftforge.event.entity.living.LivingDeathEvent;
import net.minecraftforge.event.entity.living.LivingDropsEvent;
import net.minecraftforge.event.entity.living.LivingEvent.LivingUpdateEvent;
import net.minecraftforge.event.entity.living.LivingHurtEvent;
import net.minecraftforge.event.entity.player.EntityItemPickupEvent;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import net.minecraftforge.fml.common.gameevent.PlayerEvent.PlayerLoggedInEvent;
/**
* As of Wizardry 2.1, most of the code in this class has been relocated somewhere sensible, leaving only a few
* miscellaneous things that don't make much sense anywhere else, or that are better kept together. Previously, this was
* a gigantic class with about half of the entire mod's logic in it!
*
* @author Electroblob
* @since Wizardry 1.0
*/
@Mod.EventBusSubscriber
public final class WizardryEventHandler {
// IDEA: Config option allowing users to specify loot locations
private static final String[] LOOT_INJECTION_LOCATIONS = {"minecraft:chests/simple_dungeon",
"minecraft:chests/abandoned_mineshaft", "minecraft:chests/desert_pyramid", "minecraft:chests/jungle_temple",
"minecraft:chests/stronghold_corridor", "minecraft:chests/stronghold_crossing",
"minecraft:chests/stronghold_library", "minecraft:chests/igloo_chest", "minecraft:chests/woodland_mansion",
"minecraft:chests/end_city_treasure"};
@SubscribeEvent
public static void onLootTableLoadEvent(LootTableLoadEvent event){
if(Wizardry.settings.generateLoot){
for(String location : LOOT_INJECTION_LOCATIONS){
if(event.getName().toString().matches(location)){
event.getTable().addPool(getAdditive("wizardry:chests/dungeon_additions"));
}
}
}
}
private static LootPool getAdditive(String entryName){
return new LootPool(new LootEntry[]{getAdditiveEntry(entryName, 1)}, new LootCondition[0],
new RandomValueRange(1), new RandomValueRange(0, 1), Wizardry.MODID + "_additive_pool");
}
private static LootEntryTable getAdditiveEntry(String name, int weight){
return new LootEntryTable(new ResourceLocation(name), weight, 0, new LootCondition[0],
Wizardry.MODID + "_additive_entry");
}
@SubscribeEvent
public static void onPlayerLoggedInEvent(PlayerLoggedInEvent event){
// When a player logs in, they are sent the glyph data and the server's settings.
if(event.player instanceof EntityPlayerMP){
SpellGlyphData.get(event.player.world).sync((EntityPlayerMP)event.player);
Wizardry.settings.sync((EntityPlayerMP)event.player);
}
}
@SubscribeEvent
public static void onSpellCastPreEvent(SpellCastEvent.Pre event){
// If a spell is disabled in the config, it will not work.
if(!event.getSpell().isEnabled()){
if(!event.getEntityLiving().world.isRemote) event.getEntity().sendMessage(
new TextComponentTranslation("spell.disabled", event.getSpell().getNameForTranslationFormatted()));
event.setCanceled(true);
}
}
@SubscribeEvent
public static void onSpellCastPostEvent(SpellCastEvent.Post event){
// Spell discovery (only players can discover spells, obviously)
if(event.getEntity() instanceof EntityPlayer){
EntityPlayer player = (EntityPlayer)event.getEntity();
WizardData data = WizardData.get(player);
if(data != null){
// Data is updated on both sides (This line was added client-side to fix a bug back in 1.1.3, so now
// it's in common code, which is nice!)
// Short-circuiting AND means that discoverSpell is only called if the event isn't cancelled.
if(!MinecraftForge.EVENT_BUS
.post(new DiscoverSpellEvent(player, event.getSpell(), DiscoverSpellEvent.Source.CASTING))
&& data.discoverSpell(event.getSpell())){
// If the spell wasn't already discovered, other stuff happens:
if(event.getSource() == SpellCastEvent.Source.COMMAND){
// If the spell didn't send a packet itself, the extended player needs to be synced so the
// spell discovery updates on the client.
if(!event.getSpell().doesSpellRequirePacket()) data.sync();
}else if(!event.getEntity().world.isRemote && !player.capabilities.isCreativeMode
&& Wizardry.settings.discoveryMode){
// Sound and text only happen server-side, in survival, with discovery mode on, and only when
// the spell wasn't cast using commands.
WizardryUtilities.playSoundAtPlayer(player, SoundEvents.ENTITY_PLAYER_LEVELUP, 1.25f, 1);
player.sendMessage(new TextComponentTranslation("spell.discover",
event.getSpell().getNameForTranslationFormatted()));
}
}
}
}
}
/* There is a subtle but important difference between LivingAttackEvent and LivingHurtEvent - LivingAttackEvent
* fires immediately when attackEntityFrom is called, whereas LivingHurtEvent only fires if the attack actually
* succeeded, i.e. if the entity in question takes damage (though the event is fired before that so you can cancel
* the damage). Things are processed in the following order: * LivingAttackEvent * - Invulnerability -
* Already-dead-ness - Fire resistance - Helmets vs. falling things - Hurt resistant time - Invulnerability (again)
* * LivingHurtEvent * - Armour - Potions - Health is finally changed Of course, there are no guarantees that other
* mods hooking into these two events will be called before or after yours, but you can have some degree of control
* by choosing which event to use. EDIT: Actually, there are. Firstly, you can set a priority in the @SubscribeEvent
* annotation which defines how early (higher priority) or late (lower priority) the method is called. Methods with
* the same priority are sorted alphabetically by mod id (so it's safe to assume wizardry would be fairly late on!).
* I wonder if there are any conventions for what sort of things take what priority...? */
@SubscribeEvent
public static void onLivingAttackEvent(LivingAttackEvent event){
// Prevents any damage to allies from magic if friendly fire is disabled
if(!Wizardry.settings.friendlyFire && event.getSource() != null
&& event.getSource().getTrueSource() instanceof EntityPlayer && event.getEntity() instanceof EntityPlayer
&& event.getSource() instanceof IElementalDamage){
if(WizardryUtilities.isPlayerAlly((EntityPlayer)event.getSource().getTrueSource(),
(EntityPlayer)event.getEntity())){
event.setCanceled(true);
// This needs to be here, since if the event is cancelled nothing else needs to happen.
return;
}
}
// Retaliatory effects
// These are better off here because the revenge effects are pretty similar, and I'd rather keep the (lengthy)
// if statement in one place.
if(event.getSource() != null && event.getSource().getTrueSource() instanceof EntityLivingBase
&& !event.getSource().isProjectile() && !(event.getSource() instanceof IElementalDamage
&& ((IElementalDamage)event.getSource()).isRetaliatory())){
EntityLivingBase attacker = (EntityLivingBase)event.getSource().getTrueSource();
World world = event.getEntityLiving().world;
// Fireskin
if(event.getEntityLiving().isPotionActive(WizardryPotions.fireskin)
&& !MagicDamage.isEntityImmune(DamageType.FIRE, event.getEntityLiving()))
attacker.setFire(5);
// Ice Shroud
if(event.getEntityLiving().isPotionActive(WizardryPotions.ice_shroud)
&& !MagicDamage.isEntityImmune(DamageType.FROST, event.getEntityLiving()))
attacker.addPotionEffect(new PotionEffect(WizardryPotions.frost, 100, 0));
// Static Aura
if(event.getEntityLiving().isPotionActive(WizardryPotions.static_aura)){
if(!world.isRemote){
EntityArc arc = new EntityArc(world);
arc.setEndpointCoords(event.getEntityLiving().posX, event.getEntityLiving().posY + 1,
event.getEntityLiving().posZ, attacker.posX, attacker.posY + attacker.height / 2,
attacker.posZ);
world.spawnEntity(arc);
}else{
for(int i = 0; i < 8; i++){
Wizardry.proxy.spawnParticle(WizardryParticleType.SPARK, world,
attacker.posX + world.rand.nextFloat() - 0.5, attacker.getEntityBoundingBox().minY
+ attacker.height / 2 + world.rand.nextFloat() * 2 - 1,
attacker.posZ + world.rand.nextFloat() - 0.5, 0, 0, 0, 3);
world.spawnParticle(EnumParticleTypes.SMOKE_LARGE, attacker.posX + world.rand.nextFloat() - 0.5,
attacker.getEntityBoundingBox().minY + attacker.height / 2 + world.rand.nextFloat() * 2
- 1,
attacker.posZ + world.rand.nextFloat() - 0.5, 0, 0, 0);
}
}
attacker.attackEntityFrom(
MagicDamage.causeDirectMagicDamage(event.getEntityLiving(), DamageType.SHOCK, true), 4.0f);
attacker.playSound(WizardrySounds.SPELL_SPARK, 1.0F, world.rand.nextFloat() * 0.4F + 1.5F);
}
}
}
@SubscribeEvent
public static void onLivingHurtEvent(LivingHurtEvent event){
// Flaming and freezing swords
if(event.getSource().getTrueSource() instanceof EntityLivingBase){
EntityLivingBase attacker = (EntityLivingBase)event.getSource().getTrueSource();
// Players can only ever attack with their main hand, so this is the right method to use here.
if(!attacker.getHeldItemMainhand().isEmpty() && attacker.getHeldItemMainhand().getItem() instanceof ItemSword){
int level = EnchantmentHelper.getEnchantmentLevel(WizardryEnchantments.flaming_weapon,
attacker.getHeldItemMainhand());
if(level > 0 && !MagicDamage.isEntityImmune(DamageType.FIRE, event.getEntityLiving()))
event.getEntityLiving().setFire(level * 4);
level = EnchantmentHelper.getEnchantmentLevel(WizardryEnchantments.freezing_weapon,
attacker.getHeldItemMainhand());
// Frost lasts for longer because it doesn't do any actual damage
if(level > 0 && !MagicDamage.isEntityImmune(DamageType.FROST, event.getEntityLiving()))
event.getEntityLiving().addPotionEffect(new PotionEffect(WizardryPotions.frost, level * 200, 0));
}
}
// Freezing bow
if(event.getSource().getImmediateSource() instanceof EntityArrow
&& event.getSource().getImmediateSource().getEntityData() != null){
int level = event.getSource().getImmediateSource().getEntityData()
.getInteger(FreezingWeapon.FREEZING_ARROW_NBT_KEY);
if(level > 0 && !MagicDamage.isEntityImmune(DamageType.FROST, event.getEntityLiving()))
event.getEntityLiving().addPotionEffect(new PotionEffect(WizardryPotions.frost, level * 150, 0));
}
// Damage scaling
if(event.getSource() != null && event.getSource() instanceof IElementalDamage){
if(event.getSource().getTrueSource() instanceof EntityPlayer){
event.setAmount((float)(event.getAmount() * Wizardry.settings.playerDamageScale));
}else{
event.setAmount((float)(event.getAmount() * Wizardry.settings.npcDamageScale));
}
}
}
@SubscribeEvent
public static void onLivingUpdateEvent(LivingUpdateEvent event){
if(event.getEntityLiving() instanceof EntityPlayer){
EntityPlayer player = (EntityPlayer)event.getEntityLiving();
if(player.world.isRemote) hackilyFixContinuousSpellCasting(player);
// Mana flask crafting
if(player.openContainer instanceof ContainerWorkbench){
IInventory craftMatrix = ((ContainerWorkbench)player.openContainer).craftMatrix;
ItemStack output = ((ContainerWorkbench)player.openContainer).craftResult.getStackInSlot(0);
processManaFlaskCrafting(craftMatrix, output);
}else if(player.openContainer instanceof ContainerPlayer){
IInventory craftMatrix = ((ContainerPlayer)player.openContainer).craftMatrix;
ItemStack output = ((ContainerPlayer)player.openContainer).craftResult.getStackInSlot(0);
// Unfortunately I have no choice but to call this method every tick when the player isn't using another
// inventory, since the only thing tracking whether the player is looking at their inventory is the GUI
// itself, which is client-side only.
processManaFlaskCrafting(craftMatrix, output);
}
}
if(event.getEntityLiving().world.isRemote){
// Client-side continuous spell casting for NPCs
if(event.getEntity() instanceof ISpellCaster && event.getEntity() instanceof EntityLiving){
Spell spell = ((ISpellCaster)event.getEntity()).getContinuousSpell();
SpellModifiers modifiers = ((ISpellCaster)event.getEntity()).getModifiers();
if(spell != null && spell != Spells.none){
if(!MinecraftForge.EVENT_BUS.post(new SpellCastEvent.Tick(event.getEntityLiving(), spell, modifiers,
SpellCastEvent.Source.NPC, 0))){
spell.cast(event.getEntity().world, (EntityLiving)event.getEntity(), EnumHand.MAIN_HAND, 0,
// TODO: This implementation of modifiers relies on them being accessible client-side.
((EntityLiving)event.getEntity()).getAttackTarget(), modifiers);
}
}
}
}
}
@SubscribeEvent
public static void onLivingDeathEvent(LivingDeathEvent event){
if(event.getSource().getTrueSource() instanceof EntityPlayer){
EntityPlayer player = (EntityPlayer)event.getSource().getTrueSource();
for(ItemStack stack : WizardryUtilities.getPrioritisedHotbarAndOffhand(player)){
if(stack.getItem() instanceof ItemWand && stack.isItemDamaged()
&& WandHelper.getUpgradeLevel(stack, WizardryItems.siphon_upgrade) > 0){
int damage = stack.getItemDamage()
- Constants.SIPHON_MANA_PER_LEVEL
* WandHelper.getUpgradeLevel(stack, WizardryItems.siphon_upgrade)
- player.world.rand.nextInt(Constants.SIPHON_MANA_PER_LEVEL);
if(damage < 0) damage = 0;
stack.setItemDamage(damage);
break;
}
}
if(event.getEntityLiving() == player && event.getSource() instanceof IElementalDamage){
AdvancementHelper.grantAdvancement(player, EnumAdvancement.self_destruct);
}
}
}
@SubscribeEvent
public static void onLivingDropsEvent(LivingDropsEvent event){
// TODO: Really, this should be in a loot table (mob_additions), however I can't seem to find a way of
// automatically adding it to all subclasses of IMob.
// Evil wizards drop spell books themselves
if(event.getEntityLiving() instanceof IMob && !(event.getEntityLiving() instanceof EntityEvilWizard)
// TODO: Backport when you backport the new summoned creature system.
&& !(event.getEntityLiving() instanceof ISummonedCreature)
&& event.getSource().getTrueSource() instanceof EntityPlayer && Wizardry.settings.spellBookDropChance > 0){
// This does exactly what the entity drop method does, but with a different random number so that the
// spell book doesn't always drop with other rare drops.
int rareDropNumber = event.getEntity().world.rand.nextInt(200) - event.getLootingLevel();
if(rareDropNumber < Wizardry.settings.spellBookDropChance){
// Drops a spell book
int id = WizardryUtilities.getStandardWeightedRandomSpellId(event.getEntity().world.rand);
event.getDrops()
.add(new EntityItem(event.getEntityLiving().world, event.getEntityLiving().posX,
event.getEntityLiving().posY, event.getEntityLiving().posZ,
new ItemStack(WizardryItems.spell_book, 1, id)));
}
}
}
@SubscribeEvent
public static void onItemPickupEvent(EntityItemPickupEvent event){
if(event.getItem().getItem().getItem() == WizardryItems.magic_crystal){
AdvancementHelper.grantAdvancement(event.getEntityPlayer(), EnumAdvancement.crystal);
}
}
// Private helper methods
// ================================================================================================================
/**
* Detects inconsistencies between player.getActiveItemStack and the actual itemstack and forces them to be equal.
* Fixes issue #25.
*
* @param player
*/
private static void hackilyFixContinuousSpellCasting(EntityPlayer player){
if(player.isHandActive() && player.getHeldItem(player.getActiveHand()).getItem() instanceof ItemWand
&& WandHelper.getCurrentSpell(player.getHeldItem(player.getActiveHand())).isContinuous){
if(player.getActiveItemStack() != player.getHeldItem(player.getActiveHand())){
player.setHeldItem(player.getActiveHand(), player.getActiveItemStack());
}
}
}
private static void processManaFlaskCrafting(IInventory craftMatrix, ItemStack output){
// Charges wand using mana flask. It is here rather than in the crafting handler so the result displays
// the proper damage before it is actually crafted.
boolean flag = false;
ItemStack wand = ItemStack.EMPTY;
ItemStack armour = ItemStack.EMPTY;
for(int i = 0; i < craftMatrix.getSizeInventory(); i++){
ItemStack itemstack = craftMatrix.getStackInSlot(i);
if(itemstack.getItem() == WizardryItems.mana_flask){
flag = true;
}
if(itemstack.getItem() instanceof ItemWand){
wand = itemstack;
}
if(itemstack.getItem() instanceof ItemWizardArmour){
armour = itemstack;
}
}
if(output.getItem() instanceof ItemWand && flag && !wand.isEmpty()){
output.setTagCompound((wand.getTagCompound()));
if(wand.getItemDamage() - Constants.MANA_PER_FLASK < 0){
output.setItemDamage(0);
}else{
output.setItemDamage(wand.getItemDamage() - Constants.MANA_PER_FLASK);
}
}
if(output.getItem() instanceof ItemWizardArmour && flag && !armour.isEmpty()){
output.setTagCompound((armour.getTagCompound()));
if(armour.getItemDamage() - Constants.MANA_PER_FLASK < 0){
output.setItemDamage(0);
}else{
output.setItemDamage(wand.getItemDamage() - Constants.MANA_PER_FLASK);
}
}
}
}