From e9e56c914dfbf0e0247dd46619c712e006ff7255 Mon Sep 17 00:00:00 2001 From: Aikar 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 2b15aa6c9..3ca32123b 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 f; private final EntityInsentient entity; private int h; + private World world; // Paper public PathfinderGoalRemoveBlock(Block block, EntityCreature entitycreature, double d0, int i) { super(entitycreature, d0, 24, i); this.f = block; this.entity = entitycreature; + this.world = entitycreature.world; // Paper } public boolean a() { @@ -99,7 +101,9 @@ public class PathfinderGoalRemoveBlock extends PathfinderGoalGotoTarget { @Nullable private BlockPosition a(BlockPosition blockposition, IBlockAccess iblockaccess) { - if (iblockaccess.getType(blockposition).getBlock() == this.f) { + Block block = world.getBlockIfLoaded(blockposition); // Paper + if (block == null) return null; // Paper + if (block == this.f) { // Paper return blockposition; } else { BlockPosition[] ablockposition = new BlockPosition[] { blockposition.down(), blockposition.west(), blockposition.east(), blockposition.north(), blockposition.south(), blockposition.down().down()}; @@ -109,7 +113,7 @@ public class PathfinderGoalRemoveBlock extends PathfinderGoalGotoTarget { for (int j = 0; j < i; ++j) { BlockPosition blockposition1 = ablockposition1[j]; - if (iblockaccess.getType(blockposition1).getBlock() == this.f) { + if (world.getBlockIfLoaded(blockposition1) == this.f) { // Paper return blockposition1; } } @@ -119,7 +123,8 @@ public class PathfinderGoalRemoveBlock extends PathfinderGoalGotoTarget { } 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.f && 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 f252ef243..bfa6c2eef 100644 --- a/src/main/java/net/minecraft/server/RandomPositionGenerator.java +++ b/src/main/java/net/minecraft/server/RandomPositionGenerator.java @@ -78,6 +78,7 @@ public class RandomPositionGenerator { } BlockPosition blockposition2 = new BlockPosition((double)j1 + entitycreature.locX, (double)k1 + entitycreature.locY, (double)l1 + entitycreature.locZ); + if (!entitycreature.world.isLoaded(blockposition2)) continue; // Paper if ((!flag1 || entitycreature.f(blockposition2)) && navigationabstract.a(blockposition2)) { if (!flag) { blockposition2 = a(blockposition2, entitycreature); @@ -141,6 +142,7 @@ 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 } } diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java index 5fe4734e3..eabf50e24 100644 --- a/src/main/java/net/minecraft/server/World.java +++ b/src/main/java/net/minecraft/server/World.java @@ -762,7 +762,17 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc return chunk.getType(blockposition); } } + // Paper start + public Fluid getFluidIfLoaded(BlockPosition blockposition) { + if (blockposition.isInvalidYLocation()) { // Paper + return getFluid(blockposition); + } else { + Chunk chunk = this.getChunkIfLoaded(blockposition); + return chunk != null ? chunk.getFluid(blockposition) : null; + } + } + // Paper end public Fluid getFluid(BlockPosition blockposition) { if (blockposition.isInvalidYLocation()) { // Paper return FluidTypes.a.i(); -- 2.19.2