PaperMC/patches/server/0285-Prevent-rayTrace-from-loading-chunks.patch
Nassim Jahnke 928bcc8d3a
Updated Upstream (Bukkit/CraftBukkit) (#8430)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
09943450 Update SnakeYAML version
5515734f SPIGOT-7162: Incorrect description for Entity#getVehicle javadoc
6f82b381 PR-788: Add getHand() to all relevant events

CraftBukkit Changes:
aaf484f6f SPIGOT-7163: CraftMerchantRecipe doesn't copy demand and specialPrice from BukkitMerchantRecipe
5329dd6fd PR-1107: Add getHand() to all relevant events
93061706e SPIGOT-7045: Ocelots never spawn with babies with spawn reason OCELOT_BABY
2022-10-02 09:56:36 +02:00

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1.7 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
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 8a979600b49e8a11982577fb6dd79503e2521a0f..bca0838e40bc91d78e9b93df5318642d1c9f341e 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), new BlockPos(raytrace1.getTo()));
+ }
+ // Paper end
FluidState fluid = this.getFluidState(blockposition);
Vec3 vec3d = raytrace1.getFrom();
Vec3 vec3d1 = raytrace1.getTo();