PaperMC/patches/unapplied/server/1041-Add-API-to-get-the-collision-shape-of-a-block-before.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: TrollyLoki <trollyloki@gmail.com>
Date: Wed, 11 Oct 2023 00:45:53 -0400
Subject: [PATCH] Add API to get the collision shape of a block before it's
 placed


diff --git a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
index 0bf863f597f3657a0f158756a2a91bda7eb453f6..2a9dba6d4a94f1488ef9d86ee4f60b7fd06419fb 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/data/CraftBlockData.java
@@ -669,6 +669,20 @@ public class CraftBlockData implements BlockData {
         return this.state.isFaceSturdy(EmptyBlockGetter.INSTANCE, BlockPos.ZERO, CraftBlock.blockFaceToNotch(face), CraftBlockSupport.toNMS(support));
     }
 
+    // Paper start
+    @Override
+    public org.bukkit.util.VoxelShape getCollisionShape(Location location) {
+        Preconditions.checkArgument(location != null, "location must not be null");
+
+        CraftWorld world = (CraftWorld) location.getWorld();
+        Preconditions.checkArgument(world != null, "location must not have a null world");
+
+        BlockPos position = CraftLocation.toBlockPosition(location);
+        net.minecraft.world.phys.shapes.VoxelShape shape = this.state.getCollisionShape(world.getHandle(), position);
+        return new org.bukkit.craftbukkit.util.CraftVoxelShape(shape);
+    }
+    // Paper end
+
     @Override
     public Material getPlacementMaterial() {
         return CraftMagicNumbers.getMaterial(this.state.getBlock().asItem());