PaperMC/patches/server/0219-PlayerLaunchProjectileEvent.patch

From 0000000000000000000000000000000000000000 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/world/item/EggItem.java b/src/main/java/net/minecraft/world/item/EggItem.java
index be7d1bfb13cf0afb80ba98f3b56602bccebeab64..4ebd634cff286b10868e26eeb3ecf34abdcab22e 100644
--- a/src/main/java/net/minecraft/world/item/EggItem.java
+++ b/src/main/java/net/minecraft/world/item/EggItem.java
@@ -28,19 +28,31 @@ public class EggItem extends Item implements ProjectileItem {
 
             entityegg.setItem(itemstack);
             entityegg.shootFromRotation(user, user.getXRot(), user.getYRot(), 0.0F, 1.5F, 1.0F);
-            // CraftBukkit start
-            if (!world.addFreshEntity(entityegg)) {
+            // Paper start - PlayerLaunchProjectileEvent
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) user.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack), (org.bukkit.entity.Projectile) entityegg.getBukkitEntity());
+            if (event.callEvent() && world.addFreshEntity(entityegg)) {
+                if (event.shouldConsume()) {
+                    itemstack.consume(1, user);
+                } else if (user instanceof net.minecraft.server.level.ServerPlayer) {
+                    ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
+                }
+
+                world.playSound((Player) null, user.getX(), user.getY(), user.getZ(), net.minecraft.sounds.SoundEvents.EGG_THROW, net.minecraft.sounds.SoundSource.PLAYERS, 0.5F, 0.4F / (net.minecraft.world.entity.Entity.SHARED_RANDOM.nextFloat() * 0.4F + 0.8F));
+                user.awardStat(Stats.ITEM_USED.get(this));
+            } else {
                 if (user instanceof net.minecraft.server.level.ServerPlayer) {
                     ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
                 }
                 return InteractionResultHolder.fail(itemstack);
             }
-            // CraftBukkit end
+            // Paper end - PlayerLaunchProjectileEvent
         }
         world.playSound((Player) null, user.getX(), user.getY(), user.getZ(), SoundEvents.EGG_THROW, SoundSource.PLAYERS, 0.5F, 0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F));
 
+        /* // Paper start - PlayerLaunchProjectileEvent; moved up
         user.awardStat(Stats.ITEM_USED.get(this));
         itemstack.consume(1, user);
+        */ // Paper end - PlayerLaunchProjectileEvent
         return InteractionResultHolder.sidedSuccess(itemstack, world.isClientSide());
     }
 
diff --git a/src/main/java/net/minecraft/world/item/EnderpearlItem.java b/src/main/java/net/minecraft/world/item/EnderpearlItem.java
index 48048204b619dd515253c8ffb05a0f7105ef7718..20a91d798d31a71b3c05efa2cc5bda55494e26cc 100644
--- a/src/main/java/net/minecraft/world/item/EnderpearlItem.java
+++ b/src/main/java/net/minecraft/world/item/EnderpearlItem.java
@@ -25,7 +25,20 @@ public class EnderpearlItem extends Item {
 
             entityenderpearl.setItem(itemstack);
             entityenderpearl.shootFromRotation(user, user.getXRot(), user.getYRot(), 0.0F, 1.5F, 1.0F);
-            if (!world.addFreshEntity(entityenderpearl)) {
+            // Paper start - PlayerLaunchProjectileEvent
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) user.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack), (org.bukkit.entity.Projectile) entityenderpearl.getBukkitEntity());
+            if (event.callEvent() && world.addFreshEntity(entityenderpearl)) {
+                if (event.shouldConsume()) {
+                    itemstack.consume(1, user);
+                } else if (user instanceof net.minecraft.server.level.ServerPlayer) {
+                    ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
+                }
+
+                world.playSound((Player) null, user.getX(), user.getY(), user.getZ(), SoundEvents.ENDER_PEARL_THROW, SoundSource.NEUTRAL, 0.5F, 0.4F / (net.minecraft.world.entity.Entity.SHARED_RANDOM.nextFloat() * 0.4F + 0.8F));
+                user.awardStat(Stats.ITEM_USED.get(this));
+                user.getCooldowns().addCooldown(this, 20);
+            } else {
+                // Paper end - PlayerLaunchProjectileEvent
                 if (user instanceof net.minecraft.server.level.ServerPlayer) {
                     ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
                 }
@@ -33,12 +46,14 @@ public class EnderpearlItem extends Item {
             }
         }
 
+        /* // Paper start - PlayerLaunchProjectileEvent; moved up
         world.playSound((Player) null, user.getX(), user.getY(), user.getZ(), SoundEvents.ENDER_PEARL_THROW, SoundSource.NEUTRAL, 0.5F, 0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F));
         user.getCooldowns().addCooldown(this, 20);
         // CraftBukkit end
 
         user.awardStat(Stats.ITEM_USED.get(this));
         itemstack.consume(1, user);
+        */ // Paper end - PlayerLaunchProjectileEvent; moved up
         return InteractionResultHolder.sidedSuccess(itemstack, world.isClientSide());
     }
 }
diff --git a/src/main/java/net/minecraft/world/item/ExperienceBottleItem.java b/src/main/java/net/minecraft/world/item/ExperienceBottleItem.java
index 686f0fd87e06fa7552d66fd3e38a3e059c22f180..7448309b6dca619b6366aa55fe3a395a830ffbdd 100644
--- a/src/main/java/net/minecraft/world/item/ExperienceBottleItem.java
+++ b/src/main/java/net/minecraft/world/item/ExperienceBottleItem.java
@@ -20,25 +20,44 @@ public class ExperienceBottleItem extends Item implements ProjectileItem {
     @Override
     public InteractionResultHolder<ItemStack> use(Level world, Player user, InteractionHand hand) {
         ItemStack itemStack = user.getItemInHand(hand);
-        world.playSound(
-            null,
-            user.getX(),
-            user.getY(),
-            user.getZ(),
-            SoundEvents.EXPERIENCE_BOTTLE_THROW,
-            SoundSource.NEUTRAL,
-            0.5F,
-            0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F)
-        );
+        // Paper - PlayerLaunchProjectileEvent; moved down
         if (!world.isClientSide) {
             ThrownExperienceBottle thrownExperienceBottle = new ThrownExperienceBottle(world, user);
             thrownExperienceBottle.setItem(itemStack);
             thrownExperienceBottle.shootFromRotation(user, user.getXRot(), user.getYRot(), -20.0F, 0.7F, 1.0F);
-            world.addFreshEntity(thrownExperienceBottle);
+            // Paper start - PlayerLaunchProjectileEvent
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) user.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemStack), (org.bukkit.entity.Projectile) thrownExperienceBottle.getBukkitEntity());
+            if (event.callEvent() && world.addFreshEntity(thrownExperienceBottle)) {
+                if (event.shouldConsume()) {
+                    itemStack.consume(1, user);
+                } else if (user instanceof net.minecraft.server.level.ServerPlayer) {
+                    ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
+                }
+
+                world.playSound(
+                    null,
+                    user.getX(),
+                    user.getY(),
+                    user.getZ(),
+                    SoundEvents.EXPERIENCE_BOTTLE_THROW,
+                    SoundSource.NEUTRAL,
+                    0.5F,
+                    0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F)
+                );
+                user.awardStat(Stats.ITEM_USED.get(this));
+            } else {
+                if (user instanceof net.minecraft.server.level.ServerPlayer) {
+                    ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
+                }
+                return InteractionResultHolder.fail(itemStack);
+            }
+            // Paper end - PlayerLaunchProjectileEvent
         }
 
+        /* // Paper start - PlayerLaunchProjectileEvent; moved up
         user.awardStat(Stats.ITEM_USED.get(this));
         itemStack.consume(1, user);
+        */ // Paper end - PlayerLaunchProjectileEvent
         return InteractionResultHolder.sidedSuccess(itemStack, world.isClientSide());
     }
 
diff --git a/src/main/java/net/minecraft/world/item/FireworkRocketItem.java b/src/main/java/net/minecraft/world/item/FireworkRocketItem.java
index 16da60b7ecf2e0d4a49804dfa1ad47d4ae672571..218f2f085309f04438f8b07bc41cf242583db2dc 100644
--- a/src/main/java/net/minecraft/world/item/FireworkRocketItem.java
+++ b/src/main/java/net/minecraft/world/item/FireworkRocketItem.java
@@ -43,8 +43,12 @@ public class FireworkRocketItem extends Item implements ProjectileItem {
                 itemStack
             );
             fireworkRocketEntity.spawningEntity = context.getPlayer() == null ? null : context.getPlayer().getUUID(); // Paper
-            level.addFreshEntity(fireworkRocketEntity);
-            itemStack.shrink(1);
+            // Paper start - PlayerLaunchProjectileEvent
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) context.getPlayer().getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemStack), (org.bukkit.entity.Firework) fireworkRocketEntity.getBukkitEntity());
+            if (!event.callEvent() || !level.addFreshEntity(fireworkRocketEntity)) return InteractionResult.PASS;
+            if (event.shouldConsume() && !context.getPlayer().getAbilities().instabuild) itemStack.shrink(1);
+            else if (context.getPlayer() instanceof net.minecraft.server.level.ServerPlayer) ((net.minecraft.server.level.ServerPlayer) context.getPlayer()).getBukkitEntity().updateInventory();
+            // Paper end - PlayerLaunchProjectileEvent
         }
 
         return InteractionResult.sidedSuccess(level.isClientSide);
diff --git a/src/main/java/net/minecraft/world/item/LingeringPotionItem.java b/src/main/java/net/minecraft/world/item/LingeringPotionItem.java
index b94888d359ec92bf7ef77b0610f41ba75185a26e..c9b511cc4f2499ca13e3cd8f1cdabdc225f66b9c 100644
--- a/src/main/java/net/minecraft/world/item/LingeringPotionItem.java
+++ b/src/main/java/net/minecraft/world/item/LingeringPotionItem.java
@@ -24,6 +24,10 @@ public class LingeringPotionItem extends ThrowablePotionItem {
 
     @Override
     public InteractionResultHolder<ItemStack> use(Level world, Player user, InteractionHand hand) {
+        // Paper start - PlayerLaunchProjectileEvent
+        InteractionResultHolder<ItemStack> wrapper = super.use(world, user, hand);
+        if (wrapper.getResult() != net.minecraft.world.InteractionResult.FAIL) {
+        // Paper end - PlayerLaunchProjectileEvent
         world.playSound(
             null,
             user.getX(),
@@ -34,6 +38,9 @@ public class LingeringPotionItem extends ThrowablePotionItem {
             0.5F,
             0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F)
         );
-        return super.use(world, user, hand);
+        // Paper start - PlayerLaunchProjectileEvent
+        }
+        return wrapper;
+        // Paper end - PlayerLaunchProjectileEvent
     }
 }
diff --git a/src/main/java/net/minecraft/world/item/SnowballItem.java b/src/main/java/net/minecraft/world/item/SnowballItem.java
index 2ae40936b31012fab0c7c42a7dea13b01ec6068f..32b170551a2f5bdc88d29f4d03750bfe3974e71b 100644
--- a/src/main/java/net/minecraft/world/item/SnowballItem.java
+++ b/src/main/java/net/minecraft/world/item/SnowballItem.java
@@ -29,17 +29,26 @@ public class SnowballItem extends Item implements ProjectileItem {
 
             entitysnowball.setItem(itemstack);
             entitysnowball.shootFromRotation(user, user.getXRot(), user.getYRot(), 0.0F, 1.5F, 1.0F);
-            if (world.addFreshEntity(entitysnowball)) {
-                itemstack.consume(1, user);
+            // Paper start - PlayerLaunchProjectileEvent
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) user.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemstack), (org.bukkit.entity.Projectile) entitysnowball.getBukkitEntity());
+            if (event.callEvent() && world.addFreshEntity(entitysnowball)) {
+                user.awardStat(Stats.ITEM_USED.get(this));
+                if (event.shouldConsume()) {
+                    // Paper end - PlayerLaunchProjectileEvent
+                    itemstack.consume(1, user);
+                } else if (user instanceof net.minecraft.server.level.ServerPlayer) {  // Paper - PlayerLaunchProjectileEvent
+                    ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();  // Paper - PlayerLaunchProjectileEvent
+                }
 
                 world.playSound((Player) null, user.getX(), user.getY(), user.getZ(), SoundEvents.SNOWBALL_THROW, SoundSource.NEUTRAL, 0.5F, 0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F));
-            } else if (user instanceof net.minecraft.server.level.ServerPlayer) {
-                ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
+            } else { // Paper - PlayerLaunchProjectileEvent
+                if (user instanceof net.minecraft.server.level.ServerPlayer) ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory(); // Paper - PlayerLaunchProjectileEvent
+                return InteractionResultHolder.fail(itemstack); // Paper - PlayerLaunchProjectileEvent
             }
         }
         // CraftBukkit end
 
-        user.awardStat(Stats.ITEM_USED.get(this));
+        // user.awardStat(Stats.ITEM_USED.get(this)); // Paper - PlayerLaunchProjectileEvent; moved up
         // itemstack.consume(1, entityhuman); // CraftBukkit - moved up
         return InteractionResultHolder.sidedSuccess(itemstack, world.isClientSide());
     }
diff --git a/src/main/java/net/minecraft/world/item/SplashPotionItem.java b/src/main/java/net/minecraft/world/item/SplashPotionItem.java
index 935c34ba7eb14348becdd3ac0c29766abf7ca614..73bac60b3bf6d20d415a8250d0426251c0c3265b 100644
--- a/src/main/java/net/minecraft/world/item/SplashPotionItem.java
+++ b/src/main/java/net/minecraft/world/item/SplashPotionItem.java
@@ -14,6 +14,10 @@ public class SplashPotionItem extends ThrowablePotionItem {
 
     @Override
     public InteractionResultHolder<ItemStack> use(Level world, Player user, InteractionHand hand) {
+        // Paper start - PlayerLaunchProjectileEvent
+        InteractionResultHolder<ItemStack> wrapper = super.use(world, user, hand);
+        if (wrapper.getResult() != net.minecraft.world.InteractionResult.FAIL) {
+        // Paper end - PlayerLaunchProjectileEvent
         world.playSound(
             null,
             user.getX(),
@@ -24,6 +28,9 @@ public class SplashPotionItem extends ThrowablePotionItem {
             0.5F,
             0.4F / (world.getRandom().nextFloat() * 0.4F + 0.8F)
         );
-        return super.use(world, user, hand);
+        // Paper start - PlayerLaunchProjectileEvent
+        }
+        return wrapper;
+        // Paper end - PlayerLaunchProjectileEvent
     }
 }
diff --git a/src/main/java/net/minecraft/world/item/ThrowablePotionItem.java b/src/main/java/net/minecraft/world/item/ThrowablePotionItem.java
index 12795451393e48f5c9ab4b1dfd9369e1ee6e0367..369955746f4b51f69fa01103e3771dd74fc6c8f0 100644
--- a/src/main/java/net/minecraft/world/item/ThrowablePotionItem.java
+++ b/src/main/java/net/minecraft/world/item/ThrowablePotionItem.java
@@ -22,11 +22,29 @@ public class ThrowablePotionItem extends PotionItem implements ProjectileItem {
             ThrownPotion thrownPotion = new ThrownPotion(world, user);
             thrownPotion.setItem(itemStack);
             thrownPotion.shootFromRotation(user, user.getXRot(), user.getYRot(), -20.0F, 0.5F, 1.0F);
-            world.addFreshEntity(thrownPotion);
+            // Paper start - PlayerLaunchProjectileEvent
+            com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent event = new com.destroystokyo.paper.event.player.PlayerLaunchProjectileEvent((org.bukkit.entity.Player) user.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(itemStack), (org.bukkit.entity.Projectile) thrownPotion.getBukkitEntity());
+            if (event.callEvent() && world.addFreshEntity(thrownPotion)) {
+                if (event.shouldConsume()) {
+                    itemStack.consume(1, user);
+                } else if (user instanceof net.minecraft.server.level.ServerPlayer) {
+                    ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
+                }
+
+                user.awardStat(Stats.ITEM_USED.get(this));
+            } else {
+                if (user instanceof net.minecraft.server.level.ServerPlayer) {
+                    ((net.minecraft.server.level.ServerPlayer) user).getBukkitEntity().updateInventory();
+                }
+                return InteractionResultHolder.fail(itemStack);
+            }
+            // Paper end - PlayerLaunchProjectileEvent
         }
 
+        /* // Paper start - PlayerLaunchProjectileEvent; moved up
         user.awardStat(Stats.ITEM_USED.get(this));
         itemStack.consume(1, user);
+        */ // Paper end
         return InteractionResultHolder.sidedSuccess(itemStack, world.isClientSide());
     }
 
diff --git a/src/main/java/net/minecraft/world/item/TridentItem.java b/src/main/java/net/minecraft/world/item/TridentItem.java
index d8d59ddaa5277b9602f37d7c5bb5753030582996..47de500fddb0716d142f8f5876a82a95afaa06fa 100644
--- a/src/main/java/net/minecraft/world/item/TridentItem.java
+++ b/src/main/java/net/minecraft/world/item/TridentItem.java
@@ -82,19 +82,24 @@ public class TridentItem extends Item implements ProjectileItem {
                             }
 
                             // CraftBukkit start
-                            if (!world.addFreshEntity(entitythrowntrident)) {
+                            // Paper start - PlayerLaunchProjectileEvent
+                            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(stack), (org.bukkit.entity.Projectile) entitythrowntrident.getBukkitEntity());
+                            if (!event.callEvent() || !world.addFreshEntity(entitythrowntrident)) {
+                                // Paper end - PlayerLaunchProjectileEvent
                                 if (entityhuman instanceof net.minecraft.server.level.ServerPlayer) {
                                     ((net.minecraft.server.level.ServerPlayer) entityhuman).getBukkitEntity().updateInventory();
                                 }
                                 return;
                             }
 
+                            if (event.shouldConsume()) { // Paper - PlayerLaunchProjectileEvent
                             stack.hurtAndBreak(1, entityhuman, LivingEntity.getSlotForHand(user.getUsedItemHand()));
+                            } // Paper - PlayerLaunchProjectileEvent
                             entitythrowntrident.pickupItemStack = stack.copy(); // SPIGOT-4511 update since damage call moved
                             // CraftBukkit end
 
                             world.playSound((Player) null, (Entity) entitythrowntrident, SoundEvents.TRIDENT_THROW, SoundSource.PLAYERS, 1.0F, 1.0F);
-                            if (!entityhuman.hasInfiniteMaterials()) {
+                            if (event.shouldConsume() && !entityhuman.hasInfiniteMaterials()) {
                                 entityhuman.getInventory().removeItem(stack);
                             }
                             // CraftBukkit start - SPIGOT-5458 also need in this branch :(