Paper/patches/server/0821-Fix-falling-block-spawn-methods.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Nassim Jahnke <nassim@njahnke.dev>
Date: Fri, 4 Mar 2022 20:35:19 +0100
Subject: [PATCH] Fix falling block spawn methods

Restores the API behavior from previous versions of the server
- Do not call API events
- Do not replace the existing block in the world

== AT ==
public net.minecraft.world.entity.item.FallingBlockEntity <init>(Lnet/minecraft/world/level/Level;DDDLnet/minecraft/world/level/block/state/BlockState;)V

diff --git a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
index d1fca0e3227b5f37c11367548be362f5a49b6a71..5628940cd3c3566c5db2beda506d4f20b6e3cbae 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
@@ -566,7 +566,7 @@ public abstract class CraftRegionAccessor implements RegionAccessor {
             // Paper end
         } else if (FallingBlock.class.isAssignableFrom(clazz)) {
             BlockPos pos = new BlockPos(x, y, z);
-            entity = FallingBlockEntity.fall(world, pos, this.getHandle().getBlockState(pos));
+            entity = new FallingBlockEntity(world, x, y, z, this.getHandle().getBlockState(pos)); // Paper
         } else if (Projectile.class.isAssignableFrom(clazz)) {
             if (Snowball.class.isAssignableFrom(clazz)) {
                 entity = new net.minecraft.world.entity.projectile.Snowball(world, x, y, z);
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 439a360c351f0d82245ee7703f7d0bf48a29c2fa..1aa28195d2d2ef466764a162891c232f99b678e7 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1395,7 +1395,12 @@ public class CraftWorld extends CraftRegionAccessor implements World {
         Validate.notNull(material, "Material cannot be null");
         Validate.isTrue(material.isBlock(), "Material must be a block");
 
-        FallingBlockEntity entity = FallingBlockEntity.fall(world, new BlockPos(location.getX(), location.getY(), location.getZ()), CraftMagicNumbers.getBlock(material).defaultBlockState(), SpawnReason.CUSTOM);
+        // Paper start - restore API behavior for spawning falling blocks
+        FallingBlockEntity entity = new FallingBlockEntity(this.world, location.getX(), location.getY(), location.getZ(), CraftMagicNumbers.getBlock(material).defaultBlockState()); // Paper
+        entity.time = 1;
+
+        this.world.addFreshEntity(entity, SpawnReason.CUSTOM);
+        // Paper end
         return (FallingBlock) entity.getBukkitEntity();
     }
 
@@ -1404,7 +1409,12 @@ public class CraftWorld extends CraftRegionAccessor implements World {
         Validate.notNull(location, "Location cannot be null");
         Validate.notNull(data, "BlockData cannot be null");
 
-        FallingBlockEntity entity = FallingBlockEntity.fall(world, new BlockPos(location.getX(), location.getY(), location.getZ()), ((CraftBlockData) data).getState(), SpawnReason.CUSTOM);
+        // Paper start - restore API behavior for spawning falling blocks
+        FallingBlockEntity entity = new FallingBlockEntity(this.world, location.getX(), location.getY(), location.getZ(), ((CraftBlockData) data).getState());
+        entity.time = 1;
+
+        this.world.addFreshEntity(entity, SpawnReason.CUSTOM);
+        // Paper end
         return (FallingBlock) entity.getBukkitEntity();
     }