Paper/Spigot-Server-Patches/0308-Prevent-Mob-AI-Rules-from-Loading-Chunks.patch
Spottedleaf 5c7081fecc Update upstream & fix some chunk related issues (#2177)
* Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appears 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:
45690fe9 SPIGOT-5047: Correct slot types for 1.14 inventories

CraftBukkit Changes:
4090d01f SPIGOT-5047: Correct slot types for 1.14 inventories
e8c08362 SPIGOT-5046: World#getLoadedChunks returning inaccessible cached chunks.
d445af3b SPIGOT-5067: Add item meta for 1.14 spawn eggs

* Bring Chunk load checks in-line with spigot

As of the last upstream merge spigot now checks ticket level status
when returning loaded chunks for a world from api. Now our checks
will respect that decision.

* Fix spawn ticket levels

Vanilla would keep the inner chunks of spawn available for ticking,
however my changes made all chunks non-ticking. Resolve by changing
ticket levels for spawn chunks inside the border to respect this
behavior.


* Make World#getChunkIfLoadedImmediately return only entity ticking chunks

Mojang appears to be using chunks with level > 33 (non-ticking chunks)
as cached chunks and not actually loaded chunks.

* Bring all loaded checks in line with spigot

Loaded chunks must be at least border  chunks, or level <= 33
2019-06-14 03:27:40 +01:00

79 lines
3.9 KiB
Diff

From 66cbb8fdb84a9bfa90faa2381beddd06044eb30f Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 10 Sep 2018 23:56:36 -0400
Subject: [PATCH] Prevent Mob AI Rules from Loading Chunks
diff --git a/src/main/java/net/minecraft/server/PathfinderGoalRemoveBlock.java b/src/main/java/net/minecraft/server/PathfinderGoalRemoveBlock.java
index 706be9a736..b1457526ec 100644
--- a/src/main/java/net/minecraft/server/PathfinderGoalRemoveBlock.java
+++ b/src/main/java/net/minecraft/server/PathfinderGoalRemoveBlock.java
@@ -12,11 +12,13 @@ public class PathfinderGoalRemoveBlock extends PathfinderGoalGotoTarget {
private final Block g;
private final EntityInsentient entity;
private int i;
+ private World world; // Paper
public PathfinderGoalRemoveBlock(Block block, EntityCreature entitycreature, double d0, int i) {
super(entitycreature, d0, 24, i);
this.g = block;
this.entity = entitycreature;
+ this.world = entitycreature.world; // Paper
}
@Override
@@ -114,7 +116,9 @@ public class PathfinderGoalRemoveBlock extends PathfinderGoalGotoTarget {
@Nullable
private BlockPosition a(BlockPosition blockposition, IBlockAccess iblockaccess) {
- if (iblockaccess.getType(blockposition).getBlock() == this.g) {
+ Block block = world.getBlockIfLoaded(blockposition); // Paper
+ if (block == null) return null; // Paper
+ if (block == this.g) { // Paper
return blockposition;
} else {
BlockPosition[] ablockposition = new BlockPosition[]{blockposition.down(), blockposition.west(), blockposition.east(), blockposition.north(), blockposition.south(), blockposition.down().down()};
@@ -124,7 +128,7 @@ public class PathfinderGoalRemoveBlock extends PathfinderGoalGotoTarget {
for (int j = 0; j < i; ++j) {
BlockPosition blockposition1 = ablockposition1[j];
- if (iblockaccess.getType(blockposition1).getBlock() == this.g) {
+ if (world.getBlockIfLoaded(blockposition1) == this.g) { // Paper
return blockposition1;
}
}
@@ -135,7 +139,8 @@ public class PathfinderGoalRemoveBlock extends PathfinderGoalGotoTarget {
@Override
protected boolean a(IWorldReader iworldreader, BlockPosition blockposition) {
- Block block = iworldreader.getType(blockposition).getBlock();
+ Block block = world.getBlockIfLoaded(blockposition); // Paper
+ if (block == null) return false; // Paper
return block == this.g && iworldreader.getType(blockposition.up()).isAir() && iworldreader.getType(blockposition.up(2)).isAir();
}
diff --git a/src/main/java/net/minecraft/server/RandomPositionGenerator.java b/src/main/java/net/minecraft/server/RandomPositionGenerator.java
index b286934aa8..c7e25e2be8 100644
--- a/src/main/java/net/minecraft/server/RandomPositionGenerator.java
+++ b/src/main/java/net/minecraft/server/RandomPositionGenerator.java
@@ -93,6 +93,7 @@ public class RandomPositionGenerator {
}
blockposition1 = new BlockPosition((double) k1 + entitycreature.locX, (double) l1 + entitycreature.locY, (double) i2 + entitycreature.locZ);
+ if (!entitycreature.world.isLoaded(blockposition1)) continue; // Paper
if ((!flag1 || entitycreature.a(blockposition1)) && navigationabstract.a(blockposition1)) {
if (!flag) {
blockposition1 = a(blockposition1, entitycreature);
@@ -161,6 +162,7 @@ public class RandomPositionGenerator {
}
private static boolean b(BlockPosition blockposition, EntityCreature entitycreature) {
- return entitycreature.world.getFluid(blockposition).a(TagsFluid.WATER);
+ Fluid fluid = entitycreature.world.getFluidIfLoaded(blockposition); // Paper
+ return fluid != null && fluid.a(TagsFluid.WATER); // Paper
}
}
--
2.21.0