Miscellaneous setup

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

@@ -8,13 +8,19 @@ import electroblob.wizardry.registry.WizardryPotions;
 import electroblob.wizardry.registry.WizardrySounds;
 import electroblob.wizardry.util.SpellModifiers;
 import electroblob.wizardry.util.WizardryUtilities;
+import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.init.MobEffects;
 import net.minecraft.item.EnumAction;
 import net.minecraft.potion.PotionEffect;
 import net.minecraft.util.EnumHand;
 import net.minecraft.world.World;
+import net.minecraftforge.event.entity.living.LivingAttackEvent;
+import net.minecraftforge.event.world.BlockEvent;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
+@Mod.EventBusSubscriber
 public class Transience extends Spell {
 
 	public Transience() {
@@ -28,7 +34,7 @@ public class Transience extends Spell {
 
 	@Override
 	public boolean cast(World world, EntityPlayer caster, EnumHand hand, int ticksInUse, SpellModifiers modifiers) {
-		
+
 		if(!caster.isPotionActive(WizardryPotions.transience)){
 			if(!world.isRemote){
 				caster.addPotionEffect(new PotionEffect(WizardryPotions.transience, (int)(400*modifiers.get(WizardryItems.duration_upgrade)), 0));
@@ -40,5 +46,37 @@ public class Transience extends Spell {
 		return false;
 	}
 
+	@SubscribeEvent
+	public static void onLivingAttackEvent(LivingAttackEvent event){
+		if(event.getSource() != null){
+			// Prevents all blockable damage while transience is active
+			if(event.getEntityLiving().isPotionActive(WizardryPotions.transience) && !event.getSource().isUnblockable()){
+				event.setCanceled(true);
+			}
+			// Prevents transient entities from causing any damage
+			if(event.getSource().getEntity() instanceof EntityLivingBase
+					&& ((EntityLivingBase)event.getSource().getEntity()).isPotionActive(WizardryPotions.transience)){
+				event.setCanceled(true);
+			}
+		}
+	}
+	
+	@SubscribeEvent
+	public static void onBlockPlaceEvent(BlockEvent.PlaceEvent event){
+		// Prevents transient players from placing blocks
+		if(event.getPlayer().isPotionActive(WizardryPotions.transience)){
+			event.setCanceled(true);
+			return;
+		}
+	}
+
+	@SubscribeEvent
+	public static void onBlockBreakEvent(BlockEvent.BreakEvent event){
+		// Prevents transient players from breaking blocks
+		if(event.getPlayer().isPotionActive(WizardryPotions.transience)){
+			event.setCanceled(true);
+			return;
+		}
+	}
 
 }