Entity powdered snow API (#6833)

build-data/paper.at

@@ -289,3 +289,6 @@ public net.minecraft.world.level.levelgen.SurfaceSystem getOrCreateRandomFactory
 
 # Fix removing recipes
 public net.minecraft.world.item.crafting.RecipeManager byName
+
+# Entity powdered snow API
+public net.minecraft.world.entity.monster.Skeleton inPowderSnowTime

patches/api/0349-Entity-powdered-snow-API.patch

@@ -0,0 +1,44 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sun, 24 Oct 2021 20:58:52 -0700
+Subject: [PATCH] Entity powdered snow API
+
+
+diff --git a/src/main/java/org/bukkit/entity/Entity.java b/src/main/java/org/bukkit/entity/Entity.java
+index bafad5764cc3933fcd9602d37bd2e68424cbd575..51ec2e4ec4239659272bba3d6ba2ad73926ebb88 100644
+--- a/src/main/java/org/bukkit/entity/Entity.java
++++ b/src/main/java/org/bukkit/entity/Entity.java
+@@ -794,5 +794,12 @@ public interface Entity extends Metadatable, CommandSender, Nameable, Persistent
+      * @return Whether the entity was successfully spawned.
+      */
+     public boolean spawnAt(@NotNull Location location, @NotNull org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason reason);
++
++    /**
++     * Check if entity is inside powdered snow.
++     *
++     * @return true if in powdered snow.
++     */
++    boolean isInPowderedSnow();
+     // Paper end
+ }
+diff --git a/src/main/java/org/bukkit/entity/Skeleton.java b/src/main/java/org/bukkit/entity/Skeleton.java
+index 01d838a60d056bf4b4a8ef9d0ac18c6f91f412e6..c61eba5f400d146a8643542048904e353df94f4b 100644
+--- a/src/main/java/org/bukkit/entity/Skeleton.java
++++ b/src/main/java/org/bukkit/entity/Skeleton.java
+@@ -41,6 +41,16 @@ public interface Skeleton extends AbstractSkeleton {
+      */
+     void setConversionTime(int time);
+ 
++    // Paper start
++    /**
++     * Gets the time the skeleton
++     * has been inside powdered snow.
++     *
++     * @return time in ticks
++     */
++    int inPowderedSnowTime();
++    // Paper end
++
+     /**
+      * A legacy enum that defines the different variances of skeleton-like
+      * entities on the server.

patches/server/0835-Entity-powdered-snow-API.patch

@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Sun, 24 Oct 2021 20:58:43 -0700
+Subject: [PATCH] Entity powdered snow API
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+index 5aae88e20bc04560d6ad52cfcaa872d28bfcee8f..5893d2028679d23315a32433f6affa0c8d63c01c 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+@@ -1286,5 +1286,10 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
+         entity.setRot(location.getYaw(), location.getPitch());
+         return !entity.valid && entity.level.addFreshEntity(entity, reason);
+     }
++
++    @Override
++    public boolean isInPowderedSnow() {
++        return getHandle().isInPowderSnow || getHandle().wasInPowderSnow; // depending on the location in the entity "tick" either could be needed.
++    }
+     // Paper end
+ }
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftSkeleton.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftSkeleton.java
+index 90f34d75f99f31f5c98c499df209979a03e23191..1737857424c5da885c46f39502cafd2a670d3be7 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftSkeleton.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftSkeleton.java
+@@ -51,4 +51,11 @@ public class CraftSkeleton extends CraftAbstractSkeleton implements Skeleton {
+     public SkeletonType getSkeletonType() {
+        return SkeletonType.NORMAL;
+     }
++
++    // Paper start
++    @Override
++    public int inPowderedSnowTime() {
++        return getHandle().inPowderSnowTime;
++    }
++    // Paper end
+ }