PaperMC/patches/server/0121-Firework-API-s.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 28 Dec 2016 07:18:33 +0100
Subject: [PATCH] Firework API's

== AT ==
public net.minecraft.world.entity.projectile.FireworkRocketEntity attachedToEntity

diff --git a/src/main/java/net/minecraft/world/entity/projectile/FireworkRocketEntity.java b/src/main/java/net/minecraft/world/entity/projectile/FireworkRocketEntity.java
index cc99d67bc52c89b50171b6c808c6e3bf293999f5..09d465947a5720e05c350d455c86002682104079 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/FireworkRocketEntity.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/FireworkRocketEntity.java
@@ -44,6 +44,7 @@ public class FireworkRocketEntity extends Projectile implements ItemSupplier {
     public int lifetime;
     @Nullable
     public LivingEntity attachedToEntity;
+    @Nullable public java.util.UUID spawningEntity; // Paper
 
     public FireworkRocketEntity(EntityType<? extends FireworkRocketEntity> type, Level world) {
         super(type, world);
@@ -301,6 +302,11 @@ public class FireworkRocketEntity extends Projectile implements ItemSupplier {
         nbt.putInt("LifeTime", this.lifetime);
         nbt.put("FireworksItem", this.getItem().save(this.registryAccess()));
         nbt.putBoolean("ShotAtAngle", (Boolean) this.entityData.get(FireworkRocketEntity.DATA_SHOT_AT_ANGLE));
+        // Paper start
+        if (this.spawningEntity != null) {
+            nbt.putUUID("SpawningEntity", this.spawningEntity);
+        }
+        // Paper end
     }
 
     @Override
@@ -317,7 +323,11 @@ public class FireworkRocketEntity extends Projectile implements ItemSupplier {
         if (nbt.contains("ShotAtAngle")) {
             this.entityData.set(FireworkRocketEntity.DATA_SHOT_AT_ANGLE, nbt.getBoolean("ShotAtAngle"));
         }
-
+        // Paper start
+        if (nbt.hasUUID("SpawningEntity")) {
+            this.spawningEntity = nbt.getUUID("SpawningEntity");
+        }
+        // Paper end
     }
 
     private List<FireworkExplosion> getExplosions() {
diff --git a/src/main/java/net/minecraft/world/item/CrossbowItem.java b/src/main/java/net/minecraft/world/item/CrossbowItem.java
index 99a39f05e7aeefa2ea4372159b4837d80963eabf..f64cdfac1fc1333845ea4ea5efb7922f0ae39619 100644
--- a/src/main/java/net/minecraft/world/item/CrossbowItem.java
+++ b/src/main/java/net/minecraft/world/item/CrossbowItem.java
@@ -160,7 +160,11 @@ public class CrossbowItem extends ProjectileWeaponItem {
     @Override
     protected Projectile createProjectile(Level world, LivingEntity shooter, ItemStack weaponStack, ItemStack projectileStack, boolean critical) {
         if (projectileStack.is(Items.FIREWORK_ROCKET)) {
-            return new FireworkRocketEntity(world, projectileStack, shooter, shooter.getX(), shooter.getEyeY() - 0.15F, shooter.getZ(), true);
+            // Paper start
+            FireworkRocketEntity entity =  new FireworkRocketEntity(world, projectileStack, shooter, shooter.getX(), shooter.getEyeY() - 0.15F, shooter.getZ(), true);
+            entity.spawningEntity = shooter.getUUID(); // Paper
+            return entity;
+            // Paper end
         } else {
             Projectile projectile = super.createProjectile(world, shooter, weaponStack, projectileStack, critical);
             if (projectile instanceof AbstractArrow abstractArrow) {
diff --git a/src/main/java/net/minecraft/world/item/FireworkRocketItem.java b/src/main/java/net/minecraft/world/item/FireworkRocketItem.java
index da89ccaf91e2baa7caa15681c113bc283f40cd21..38b33eb92d21d0099285a304c6e064bbf56db4eb 100644
--- a/src/main/java/net/minecraft/world/item/FireworkRocketItem.java
+++ b/src/main/java/net/minecraft/world/item/FireworkRocketItem.java
@@ -42,6 +42,7 @@ public class FireworkRocketItem extends Item implements ProjectileItem {
                 vec3.z + (double)direction.getStepZ() * 0.15,
                 itemStack
             );
+            fireworkRocketEntity.spawningEntity = context.getPlayer() == null ? null : context.getPlayer().getUUID(); // Paper
             level.addFreshEntity(fireworkRocketEntity);
             itemStack.shrink(1);
         }
@@ -55,6 +56,7 @@ public class FireworkRocketItem extends Item implements ProjectileItem {
             ItemStack itemStack = user.getItemInHand(hand);
             if (!world.isClientSide) {
                 FireworkRocketEntity fireworkRocketEntity = new FireworkRocketEntity(world, itemStack, user);
+                fireworkRocketEntity.spawningEntity = user.getUUID(); // Paper
                 world.addFreshEntity(fireworkRocketEntity);
                 itemStack.consume(1, user);
                 user.awardStat(Stats.ITEM_USED.get(this));
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
index 5ae87c370e47c545cef27a36e40da137e1ec656b..c9e15a9d82dee935293b2e7e233f5b9b2d822448 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftFirework.java
@@ -129,4 +129,11 @@ public class CraftFirework extends CraftProjectile implements Firework {
     public void setShotAtAngle(boolean shotAtAngle) {
         this.getHandle().getEntityData().set(FireworkRocketEntity.DATA_SHOT_AT_ANGLE, shotAtAngle);
     }
+
+    // Paper start
+    @Override
+    public java.util.UUID getSpawningEntity() {
+        return getHandle().spawningEntity;
+    }
+    // Paper end
 }