From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar Date: Mon, 26 Nov 2018 19:21:58 -0500 Subject: [PATCH] Prevent rayTrace from loading chunks ray tracing into an unloaded chunk should be treated as a miss this saves a ton of lag for when AI tries to raytrace near unloaded chunks. diff --git a/src/main/java/net/minecraft/world/level/BlockGetter.java b/src/main/java/net/minecraft/world/level/BlockGetter.java index 42e05380a875c52cd6e1cb337958b431a751698b..5ed0dbed49db210e54cf2ece3e8605feb956bc69 100644 --- a/src/main/java/net/minecraft/world/level/BlockGetter.java +++ b/src/main/java/net/minecraft/world/level/BlockGetter.java @@ -75,7 +75,15 @@ public interface BlockGetter extends LevelHeightAccessor { // CraftBukkit start - moved block handling into separate method for use by Block#rayTrace default BlockHitResult clip(ClipContext raytrace1, BlockPos blockposition) { - BlockState iblockdata = this.getBlockState(blockposition); + // Paper start - Prevent raytrace from loading chunks + BlockState iblockdata = this.getBlockStateIfLoaded(blockposition); + if (iblockdata == null) { + // copied the last function parameter (listed below) + Vec3 vec3d = raytrace1.getFrom().subtract(raytrace1.getTo()); + + return BlockHitResult.miss(raytrace1.getTo(), Direction.getNearest(vec3d.x, vec3d.y, vec3d.z), BlockPos.containing(raytrace1.getTo())); + } + // Paper end FluidState fluid = this.getFluidState(blockposition); Vec3 vec3d = raytrace1.getFrom(); Vec3 vec3d1 = raytrace1.getTo();