30 lines
1.7 KiB
Diff
30 lines
1.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 26 Nov 2018 19:21:58 -0500
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Subject: [PATCH] Prevent rayTrace from loading chunks
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ray tracing into an unloaded chunk should be treated as a miss
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this saves a ton of lag for when AI tries to raytrace near unloaded chunks.
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diff --git a/src/main/java/net/minecraft/world/level/BlockGetter.java b/src/main/java/net/minecraft/world/level/BlockGetter.java
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index 8a979600b49e8a11982577fb6dd79503e2521a0f..bca0838e40bc91d78e9b93df5318642d1c9f341e 100644
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--- a/src/main/java/net/minecraft/world/level/BlockGetter.java
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+++ b/src/main/java/net/minecraft/world/level/BlockGetter.java
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@@ -75,7 +75,15 @@ public interface BlockGetter extends LevelHeightAccessor {
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// CraftBukkit start - moved block handling into separate method for use by Block#rayTrace
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default BlockHitResult clip(ClipContext raytrace1, BlockPos blockposition) {
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- BlockState iblockdata = this.getBlockState(blockposition);
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+ // Paper start - Prevent raytrace from loading chunks
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+ BlockState iblockdata = this.getBlockStateIfLoaded(blockposition);
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+ if (iblockdata == null) {
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+ // copied the last function parameter (listed below)
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+ Vec3 vec3d = raytrace1.getFrom().subtract(raytrace1.getTo());
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+
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+ return BlockHitResult.miss(raytrace1.getTo(), Direction.getNearest(vec3d.x, vec3d.y, vec3d.z), new BlockPos(raytrace1.getTo()));
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+ }
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+ // Paper end
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FluidState fluid = this.getFluidState(blockposition);
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Vec3 vec3d = raytrace1.getFrom();
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Vec3 vec3d1 = raytrace1.getTo();
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