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/server/IBlockAccess.java b/src/main/java/net/minecraft/server/IBlockAccess.java index 077fcb67f6248156aaebe7545e370ade4311b9e4..a59df0e48a9bcbb32c51ec0013f634d474f68e52 100644 --- a/src/main/java/net/minecraft/server/IBlockAccess.java +++ b/src/main/java/net/minecraft/server/IBlockAccess.java @@ -46,7 +46,15 @@ public interface IBlockAccess { // CraftBukkit start - moved block handling into separate method for use by Block#rayTrace default MovingObjectPositionBlock rayTraceBlock(RayTrace raytrace1, BlockPosition blockposition) { - IBlockData iblockdata = this.getType(blockposition); + // Paper start - Prevent raytrace from loading chunks + IBlockData iblockdata = this.getTypeIfLoaded(blockposition); + if (iblockdata == null) { + // copied the last function parameter (listed below) + Vec3D vec3d = raytrace1.b().d(raytrace1.a()); + + return MovingObjectPositionBlock.a(raytrace1.a(), EnumDirection.a(vec3d.x, vec3d.y, vec3d.z), new BlockPosition(raytrace1.a())); + } + // Paper end Fluid fluid = this.getFluid(blockposition); Vec3D vec3d = raytrace1.b(); Vec3D vec3d1 = raytrace1.a();