Paper/Spigot-Server-Patches/0414-PlayerLaunchProjectileEvent.patch

From 551aae7bfa26f24179eba157f306c68bd7a03d18 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Sat, 21 Jul 2018 03:11:03 -0500
Subject: [PATCH] PlayerLaunchProjectileEvent


diff --git a/src/main/java/net/minecraft/server/InteractionResultWrapper.java b/src/main/java/net/minecraft/server/InteractionResultWrapper.java
index a6b96456bc..712bda1225 100644
--- a/src/main/java/net/minecraft/server/InteractionResultWrapper.java
+++ b/src/main/java/net/minecraft/server/InteractionResultWrapper.java
@@ -10,6 +10,7 @@ public class InteractionResultWrapper<T> {
         this.b = t0;
     }
 
+    public EnumInteractionResult getResult() { return this.a(); } // Paper - OBFHELPER
     public EnumInteractionResult a() {
         return this.a;
     }
diff --git a/src/main/java/net/minecraft/server/ItemEgg.java b/src/main/java/net/minecraft/server/ItemEgg.java
index 89d399c9ff..15a536dab8 100644
--- a/src/main/java/net/minecraft/server/ItemEgg.java
+++ b/src/main/java/net/minecraft/server/ItemEgg.java
@@ -16,13 +16,32 @@ public class ItemEgg extends Item {
 
             entityegg.setItem(itemstack);
             entityegg.a(entityhuman, entityhuman.pitch, entityhuman.yaw, 0.0F, 1.5F, 1.0F);
-            world.addEntity(entityegg);
+            // Paper start
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) entityhuman.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack), (org.bukkit.entity.Projectile) entityegg.getBukkitEntity());
+            if (event.callEvent() && world.addEntity(entityegg)) {
+                if (event.shouldConsume() && !entityhuman.abilities.canInstantlyBuild) {
+                    itemstack.subtract(1);
+                } else if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                }
+
+                world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_EGG_THROW, SoundCategory.PLAYERS, 0.5F, 0.4F / (Entity.SHARED_RANDOM.nextFloat() * 0.4F + 0.8F));
+                entityhuman.b(StatisticList.ITEM_USED.b(this));
+            } else {
+                if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                }
+                return new InteractionResultWrapper<ItemStack>(EnumInteractionResult.FAIL, itemstack);
+            }
+            // Paper end
         }
 
+        /* // Paper start - moved up
         entityhuman.b(StatisticList.ITEM_USED.b(this));
         if (!entityhuman.abilities.canInstantlyBuild) {
             itemstack.subtract(1);
         }
+        */ // Paper end
 
         return InteractionResultWrapper.a(itemstack);
     }
diff --git a/src/main/java/net/minecraft/server/ItemEnderPearl.java b/src/main/java/net/minecraft/server/ItemEnderPearl.java
index 315e012740..34ad0c1190 100644
--- a/src/main/java/net/minecraft/server/ItemEnderPearl.java
+++ b/src/main/java/net/minecraft/server/ItemEnderPearl.java
@@ -16,22 +16,37 @@ public class ItemEnderPearl extends Item {
 
             entityenderpearl.setItem(itemstack);
             entityenderpearl.a(entityhuman, entityhuman.pitch, entityhuman.yaw, 0.0F, 1.5F, 1.0F);
-            if (!world.addEntity(entityenderpearl)) {
+            // Paper start
+                com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) entityhuman.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack), (org.bukkit.entity.Projectile) entityenderpearl.getBukkitEntity());
+            if (event.callEvent() && world.addEntity(entityenderpearl)) {
+                if (event.shouldConsume() && !entityhuman.abilities.canInstantlyBuild) {
+                    itemstack.subtract(1);
+                } else if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                }
+
+                world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_ENDER_PEARL_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (Entity.SHARED_RANDOM.nextFloat() * 0.4F + 0.8F));
+                entityhuman.b(StatisticList.ITEM_USED.b(this));
+                entityhuman.getCooldownTracker().setCooldown(this, 20);
+            } else {
+                // Paper end
                 if (entityhuman instanceof EntityPlayer) {
                     ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
                 }
-                return new InteractionResultWrapper(EnumInteractionResult.FAIL, itemstack);
+                return new InteractionResultWrapper<ItemStack>(EnumInteractionResult.FAIL, itemstack);
             }
         }
 
-        world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_ENDER_PEARL_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (ItemEnderPearl.i.nextFloat() * 0.4F + 0.8F));
-        entityhuman.getCooldownTracker().setCooldown(this, 20);
-        // CraftBukkit end
-
-        entityhuman.b(StatisticList.ITEM_USED.b(this));
-        if (!entityhuman.abilities.canInstantlyBuild) {
-            itemstack.subtract(1);
-        }
+        // Paper start - moved up
+//        world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_ENDER_PEARL_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (ItemEnderPearl.i.nextFloat() * 0.4F + 0.8F));
+//        entityhuman.getCooldownTracker().setCooldown(this, 20);
+//        // CraftBukkit end
+//
+//        entityhuman.b(StatisticList.ITEM_USED.b(this));
+//        if (!entityhuman.abilities.canInstantlyBuild) {
+//            itemstack.subtract(1);
+//        }
+        // Paper end
 
         return InteractionResultWrapper.a(itemstack);
     }
diff --git a/src/main/java/net/minecraft/server/ItemExpBottle.java b/src/main/java/net/minecraft/server/ItemExpBottle.java
index f83eb5c45e..1bcf582922 100644
--- a/src/main/java/net/minecraft/server/ItemExpBottle.java
+++ b/src/main/java/net/minecraft/server/ItemExpBottle.java
@@ -15,19 +15,38 @@ public class ItemExpBottle extends Item {
     public InteractionResultWrapper<ItemStack> a(World world, EntityHuman entityhuman, EnumHand enumhand) {
         ItemStack itemstack = entityhuman.b(enumhand);
 
-        world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_EXPERIENCE_BOTTLE_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (ItemExpBottle.i.nextFloat() * 0.4F + 0.8F));
+//        world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_EXPERIENCE_BOTTLE_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (ItemExpBottle.i.nextFloat() * 0.4F + 0.8F)); // Paper - moved down
         if (!world.isClientSide) {
             EntityThrownExpBottle entitythrownexpbottle = new EntityThrownExpBottle(world, entityhuman);
 
             entitythrownexpbottle.setItem(itemstack);
             entitythrownexpbottle.a(entityhuman, entityhuman.pitch, entityhuman.yaw, -20.0F, 0.7F, 1.0F);
-            world.addEntity(entitythrownexpbottle);
+            // Paper start
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) entityhuman.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack), (org.bukkit.entity.Projectile) entitythrownexpbottle.getBukkitEntity());
+            if (event.callEvent() && world.addEntity(entitythrownexpbottle)) {
+                if (event.shouldConsume() && !entityhuman.abilities.canInstantlyBuild) {
+                    itemstack.subtract(1);
+                } else if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                }
+
+                world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_EXPERIENCE_BOTTLE_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (Entity.SHARED_RANDOM.nextFloat() * 0.4F + 0.8F));
+                entityhuman.b(StatisticList.ITEM_USED.b(this));
+            } else {
+                if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                }
+                    return new InteractionResultWrapper<ItemStack>(EnumInteractionResult.FAIL, itemstack);
+            }
+            // Paper end
         }
 
+        /* // Paper start - moved up
         entityhuman.b(StatisticList.ITEM_USED.b(this));
         if (!entityhuman.abilities.canInstantlyBuild) {
             itemstack.subtract(1);
         }
+        */ // Paper end
 
         return InteractionResultWrapper.a(itemstack);
     }
diff --git a/src/main/java/net/minecraft/server/ItemLingeringPotion.java b/src/main/java/net/minecraft/server/ItemLingeringPotion.java
index c19b678cfb..7672e31fc0 100644
--- a/src/main/java/net/minecraft/server/ItemLingeringPotion.java
+++ b/src/main/java/net/minecraft/server/ItemLingeringPotion.java
@@ -8,7 +8,11 @@ public class ItemLingeringPotion extends ItemPotionThrowable {
 
     @Override
     public InteractionResultWrapper<ItemStack> a(World world, EntityHuman entityhuman, EnumHand enumhand) {
-        world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_LINGERING_POTION_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (ItemLingeringPotion.i.nextFloat() * 0.4F + 0.8F));
-        return super.a(world, entityhuman, enumhand);
+        // Paper start
+        InteractionResultWrapper<ItemStack> wrapper = super.a(world, entityhuman, enumhand);
+        if (wrapper.getResult() != EnumInteractionResult.FAIL)
+            world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_LINGERING_POTION_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (ItemLingeringPotion.i.nextFloat() * 0.4F + 0.8F));
+        return wrapper;
+        // Paper end
     }
 }
diff --git a/src/main/java/net/minecraft/server/ItemPotionThrowable.java b/src/main/java/net/minecraft/server/ItemPotionThrowable.java
index 8f8f31b265..72dcf109f6 100644
--- a/src/main/java/net/minecraft/server/ItemPotionThrowable.java
+++ b/src/main/java/net/minecraft/server/ItemPotionThrowable.java
@@ -15,13 +15,31 @@ public class ItemPotionThrowable extends ItemPotion {
 
             entitypotion.setItem(itemstack);
             entitypotion.a(entityhuman, entityhuman.pitch, entityhuman.yaw, -20.0F, 0.5F, 1.0F);
-            world.addEntity(entitypotion);
+            // Paper start
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) entityhuman.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack), (org.bukkit.entity.Projectile) entitypotion.getBukkitEntity());
+            if (event.callEvent() && world.addEntity(entitypotion)) {
+                if (event.shouldConsume() && !entityhuman.abilities.canInstantlyBuild) {
+                    itemstack.subtract(1);
+                } else if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                }
+
+                entityhuman.b(StatisticList.ITEM_USED.b(this));
+            } else {
+                if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                }
+                    return new InteractionResultWrapper<ItemStack>(EnumInteractionResult.FAIL, itemstack);
+            }
+            // Paper end
         }
 
+        /* // Paper start - moved up
         entityhuman.b(StatisticList.ITEM_USED.b(this));
         if (!entityhuman.abilities.canInstantlyBuild) {
             itemstack.subtract(1);
         }
+        */ // Paper end
 
         return InteractionResultWrapper.a(itemstack);
     }
diff --git a/src/main/java/net/minecraft/server/ItemSnowball.java b/src/main/java/net/minecraft/server/ItemSnowball.java
index abbf2b7881..4ad2856961 100644
--- a/src/main/java/net/minecraft/server/ItemSnowball.java
+++ b/src/main/java/net/minecraft/server/ItemSnowball.java
@@ -17,18 +17,27 @@ public class ItemSnowball extends Item {
 
             entitysnowball.setItem(itemstack);
             entitysnowball.a(entityhuman, entityhuman.pitch, entityhuman.yaw, 0.0F, 1.5F, 1.0F);
-            if (world.addEntity(entitysnowball)) {
-                if (!entityhuman.abilities.canInstantlyBuild) {
+            // Paper start
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) entityhuman.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack), (org.bukkit.entity.Projectile) entitysnowball.getBukkitEntity());
+            if (event.callEvent() && world.addEntity(entitysnowball)) {
+                if (event.shouldConsume() && !entityhuman.abilities.canInstantlyBuild) {
                     itemstack.subtract(1);
+                } else if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
                 }
 
-                world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_SNOWBALL_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (ItemSnowball.i.nextFloat() * 0.4F + 0.8F));            } else if (entityhuman instanceof EntityPlayer) {
-                ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_SNOWBALL_THROW, SoundCategory.NEUTRAL, 0.5F, 0.4F / (Entity.SHARED_RANDOM.nextFloat() * 0.4F + 0.8F));
+                entityhuman.b(StatisticList.ITEM_USED.b(this));
+            } else {
+                if (entityhuman instanceof EntityPlayer) {
+                    ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory();
+                }
+                return new InteractionResultWrapper<ItemStack>(EnumInteractionResult.FAIL, itemstack);
             }
         }
         // CraftBukkit end
 
-        entityhuman.b(StatisticList.ITEM_USED.b(this));
+//        entityhuman.b(StatisticList.ITEM_USED.b(this)); // Paper - moved up
         // CraftBukkit start - moved up
         /*
         if (!entityhuman.abilities.canInstantlyBuild) {
diff --git a/src/main/java/net/minecraft/server/ItemSplashPotion.java b/src/main/java/net/minecraft/server/ItemSplashPotion.java
index 18bd846cee..e71e933fff 100644
--- a/src/main/java/net/minecraft/server/ItemSplashPotion.java
+++ b/src/main/java/net/minecraft/server/ItemSplashPotion.java
@@ -8,7 +8,11 @@ public class ItemSplashPotion extends ItemPotionThrowable {
 
     @Override
     public InteractionResultWrapper<ItemStack> a(World world, EntityHuman entityhuman, EnumHand enumhand) {
-        world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_SPLASH_POTION_THROW, SoundCategory.PLAYERS, 0.5F, 0.4F / (ItemSplashPotion.i.nextFloat() * 0.4F + 0.8F));
-        return super.a(world, entityhuman, enumhand);
+        // Paper start
+        InteractionResultWrapper<ItemStack> wrapper = super.a(world, entityhuman, enumhand);
+        if (wrapper.getResult() != EnumInteractionResult.FAIL)
+            world.playSound((EntityHuman) null, entityhuman.locX(), entityhuman.locY(), entityhuman.locZ(), SoundEffects.ENTITY_SPLASH_POTION_THROW, SoundCategory.PLAYERS, 0.5F, 0.4F / (ItemSplashPotion.i.nextFloat() * 0.4F + 0.8F));
+        return wrapper;
+        // Paper end
     }
 }
-- 
2.24.1