#1070: Add SpawnReason and TransformReason for Tadpole metamorphosis into Frog

By: Doc <nachito94@msn.com>

paper-server/nms-patches/net/minecraft/world/entity/animal/frog/Tadpole.patch

@@ -0,0 +1,27 @@
+--- a/net/minecraft/world/entity/animal/frog/Tadpole.java
++++ b/net/minecraft/world/entity/animal/frog/Tadpole.java
+@@ -68,7 +68,7 @@
+ 
+     @Override
+     public BehaviorController<Tadpole> getBrain() {
+-        return super.getBrain();
++        return (BehaviorController<Tadpole>) super.getBrain(); // CraftBukkit - decompile error
+     }
+ 
+     @Override
+@@ -232,8 +232,14 @@
+             }
+ 
+             frog.setPersistenceRequired();
++            // CraftBukkit start
++            if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityTransformEvent(this, frog, org.bukkit.event.entity.EntityTransformEvent.TransformReason.METAMORPHOSIS).isCancelled()) {
++                this.setAge(0); // Sets the age to 0 for avoid a loop if the event is canceled
++                return;
++            }
++            // CraftBukkit end
+             this.playSound(SoundEffects.TADPOLE_GROW_UP, 0.15F, 1.0F);
+-            worldserver.addFreshEntityWithPassengers(frog);
++            worldserver.addFreshEntityWithPassengers(frog, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.METAMORPHOSIS); // CraftBukkit - add SpawnReason
+             this.discard();
+         }
+