From 9615b6f9aa28294eb6338baf0d29e2e5fc1921bb Mon Sep 17 00:00:00 2001 From: Shane Freeder Date: Tue, 13 Nov 2018 14:01:00 +0000 Subject: [PATCH] limit the range at which we'll consider an attackable target This patch aims to ensure that MCP World#getNearestAttackablePlayer will not trigger chunk loads due to PathfinderGoalNearestAttackableTarget performing a ray trace operation by pre-checking the maximum limit; Given that the implementation shows that the limit should only ever decrease when set, allowing us to skip further checks earlier on when looking for an attackable entity diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java index cdbb247da..027871c00 100644 --- a/src/main/java/net/minecraft/server/World.java +++ b/src/main/java/net/minecraft/server/World.java @@ -2795,8 +2795,13 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc for (int i = 0; i < this.players.size(); ++i) { EntityHuman entityhuman1 = (EntityHuman) this.players.get(i); + // Paper start + // move distance check up, if set, check distance^2 is less than XZlimit^2, continue + // 4th method param is XZlimit (at least at the time of commit) + double d6 = entityhuman1.d(d0, entityhuman1.locY, d2); + if (d3 < 0.0D || d6 < d3 * d3) if (!entityhuman1.abilities.isInvulnerable && entityhuman1.isAlive() && !entityhuman1.isSpectator() && (predicate == null || predicate.test(entityhuman1))) { - double d6 = entityhuman1.d(d0, entityhuman1.locY, d2); + // Paper end double d7 = d3; if (entityhuman1.isSneaking()) { -- 2.19.1