Paper/patches/server/0939-Fixes-and-additions-to-the-SpawnReason-API.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sun, 25 Sep 2022 11:21:01 -0700
Subject: [PATCH] Fixes and additions to the SpawnReason API

Fixes some wrong reasons, and adds missing spawn reasons for entities.

Co-authored-by: Doc <nachito94@msn.com>

diff --git a/src/main/java/net/minecraft/world/entity/EntityType.java b/src/main/java/net/minecraft/world/entity/EntityType.java
index a697c3a68e9f00f7d66dead1ec516961d9ae6e1c..e5cd4b7609243669c9d84ff8a4988c209e6101aa 100644
--- a/src/main/java/net/minecraft/world/entity/EntityType.java
+++ b/src/main/java/net/minecraft/world/entity/EntityType.java
@@ -341,7 +341,7 @@ public class EntityType<T extends Entity> implements FeatureElement, EntityTypeT
     @Nullable
     public T spawn(ServerLevel world, @Nullable ItemStack stack, @Nullable Player player, BlockPos pos, MobSpawnType spawnReason, boolean alignPosition, boolean invertY) {
         // CraftBukkit start
-        return this.spawn(world, stack, player, pos, spawnReason, alignPosition, invertY, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER_EGG);
+        return this.spawn(world, stack, player, pos, spawnReason, alignPosition, invertY, spawnReason == MobSpawnType.DISPENSER ? org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.DISPENSE_EGG : org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER_EGG); // Paper - use correct spawn reason for dispenser spawn eggs
     }
 
     @Nullable
diff --git a/src/main/java/net/minecraft/world/entity/projectile/DragonFireball.java b/src/main/java/net/minecraft/world/entity/projectile/DragonFireball.java
index 6afe37e42d88701af38df5793a9ea9d7d2cda5c5..c72ab3c9f7cb20f22b051981fe1fc41965d2b2af 100644
--- a/src/main/java/net/minecraft/world/entity/projectile/DragonFireball.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/DragonFireball.java
@@ -54,7 +54,7 @@ public class DragonFireball extends AbstractHurtingProjectile {
 
                 if (new com.destroystokyo.paper.event.entity.EnderDragonFireballHitEvent((org.bukkit.entity.DragonFireball) this.getBukkitEntity(), list.stream().map(LivingEntity::getBukkitLivingEntity).collect(java.util.stream.Collectors.toList()), (org.bukkit.entity.AreaEffectCloud) areaEffectCloud.getBukkitEntity()).callEvent()) { // Paper
                 this.level.levelEvent(2006, this.blockPosition(), this.isSilent() ? -1 : 1);
-                this.level.addFreshEntity(areaEffectCloud);
+                this.level.addFreshEntity(areaEffectCloud, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.EXPLOSION); // Paper
                 } else areaEffectCloud.discard(); // Paper
                 this.discard();
             }
diff --git a/src/main/java/net/minecraft/world/level/block/CarvedPumpkinBlock.java b/src/main/java/net/minecraft/world/level/block/CarvedPumpkinBlock.java
index 3a6b84fab71d65be6215bde5bdabb303d418623e..f77dd9f9dc89d880386cc2da398cd7ec9c768c43 100644
--- a/src/main/java/net/minecraft/world/level/block/CarvedPumpkinBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/CarvedPumpkinBlock.java
@@ -89,7 +89,17 @@ public class CarvedPumpkinBlock extends HorizontalDirectionalBlock implements We
         // clearPatternBlocks(world, shapedetector_shapedetectorcollection); // CraftBukkit - moved down
         entity.moveTo((double) pos.getX() + 0.5D, (double) pos.getY() + 0.05D, (double) pos.getZ() + 0.5D, 0.0F, 0.0F);
         // CraftBukkit start
-        if (!world.addFreshEntity(entity, SpawnReason.BUILD_IRONGOLEM)) {
+        // Paper start - correct spawn reason
+        final SpawnReason spawnReason;
+        if (entity.getType() == EntityType.SNOW_GOLEM) {
+            spawnReason = SpawnReason.BUILD_SNOWMAN;
+        } else if (entity.getType() == EntityType.IRON_GOLEM) {
+            spawnReason = SpawnReason.BUILD_IRONGOLEM;
+        } else {
+            spawnReason = SpawnReason.DEFAULT;
+        }
+        if (!world.addFreshEntity(entity, spawnReason)) {
+        // Paper end
             return;
         }
         CarvedPumpkinBlock.clearPatternBlocks(world, patternResult); // CraftBukkit - from above
diff --git a/src/main/java/net/minecraft/world/level/block/FrogspawnBlock.java b/src/main/java/net/minecraft/world/level/block/FrogspawnBlock.java
index 294d22b6b27e96b59c77527efcfefa9410b756e4..bebcdc70c4cb01764428836fff76f03b94f2eae8 100644
--- a/src/main/java/net/minecraft/world/level/block/FrogspawnBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/FrogspawnBlock.java
@@ -110,7 +110,7 @@ public class FrogspawnBlock extends Block {
                 int k = random.nextInt(1, 361);
                 tadpole.moveTo(d, (double)pos.getY() - 0.5D, e, (float)k, 0.0F);
                 tadpole.setPersistenceRequired();
-                world.addFreshEntity(tadpole);
+                world.addFreshEntity(tadpole, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.EGG); // Paper
             }
         }