From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar Date: Sat, 11 Apr 2020 21:23:42 -0400 Subject: [PATCH] Delay unsafe actions until after entity ticking is done This will help prevent many cases of unregistering entities during entity ticking diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java index a4a2882d32d0167738f8367209dbfd3ca4f5b953..9e32e2db10f5faaa3c5f4adc5cbc2c1a2e4d3073 100644 --- a/src/main/java/net/minecraft/server/WorldServer.java +++ b/src/main/java/net/minecraft/server/WorldServer.java @@ -60,6 +60,16 @@ public class WorldServer extends World { private final Queue entitiesToAdd = Queues.newArrayDeque(); public final List players = Lists.newArrayList(); // Paper - private -> public boolean tickingEntities; + // Paper start + List afterEntityTickingTasks = Lists.newArrayList(); + public void doIfNotEntityTicking(java.lang.Runnable run) { + if (tickingEntities) { + afterEntityTickingTasks.add(run); + } else { + run.run(); + } + } + // Paper end private final MinecraftServer server; private final WorldNBTStorage dataManager; public boolean savingDisabled; @@ -531,6 +541,16 @@ public class WorldServer extends World { timings.entityTick.stopTiming(); // Spigot this.tickingEntities = false; + // Paper start + for (java.lang.Runnable run : this.afterEntityTickingTasks) { + try { + run.run(); + } catch (Exception e) { + LOGGER.error("Error in After Entity Ticking Task", e); + } + } + this.afterEntityTickingTasks.clear(); + // Paper end this.getMinecraftServer().midTickLoadChunks(); // Paper try (co.aikar.timings.Timing ignored = this.timings.newEntities.startTiming()) { // Paper - timings