Paper/Spigot-Server-Patches/0028-Fix-redstone-lag-issues.patch

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From 22c29fc6b22cb45bc388af5368121efb5cc89d2b Mon Sep 17 00:00:00 2001
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From: Zach Brown <zach.brown@destroystokyo.com>
Date: Wed, 2 Mar 2016 00:21:24 -0600
Subject: [PATCH] Fix redstone lag issues
diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 7c0e61f..facb98c 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -155,4 +155,15 @@ public class PaperWorldConfig {
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netherVoidTopDamage = getBoolean( "nether-ceiling-void-damage", false );
log("Top of the nether void damage: " + netherVoidTopDamage);
}
+
+ public int tickNextTickCap;
+ public boolean tickNextTickListCapIgnoresRedstone;
+ private void tickNextTickCap() {
+ tickNextTickCap = getInt("tick-next-tick-list-cap", 1000); // Higher values will be friendlier to vanilla style mechanics (to a point) but may hurt performance
+ tickNextTickListCapIgnoresRedstone = getBoolean("tick-next-tick-list-cap-ignores-redstone", false); // Redstone TickNextTicks will always bypass the preceding cap
+ log("WorldServer TickNextTick cap set at " + tickNextTickCap);
+ log("WorldServer TickNextTickList cap always processes redstone: " + tickNextTickListCapIgnoresRedstone);
+
+ }
+
}
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
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index 4f9136d..8f37b97 100644
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--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
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@@ -690,6 +690,8 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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if (false) { // CraftBukkit
throw new IllegalStateException("TickNextTick list out of synch");
} else {
+ // Paper start - No, stop doing this, it affects things like redstone
+ /*
if (i > 1000) {
// CraftBukkit start - If the server has too much to process over time, try to alleviate that
if (i > 20 * 1000) {
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@@ -699,6 +701,11 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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}
// CraftBukkit end
}
+ */
+ if (i > paperConfig.tickNextTickCap) {
+ i = paperConfig.tickNextTickCap;
+ }
+ // Paper end
this.methodProfiler.a("cleaning");
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@@ -716,6 +723,24 @@ public class WorldServer extends World implements IAsyncTaskHandler {
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this.U.add(nextticklistentry);
}
+ // Paper start - Allow redstone ticks to bypass the tickNextTickListCap
+ if (paperConfig.tickNextTickListCapIgnoresRedstone) {
+ Iterator<NextTickListEntry> iterator = this.nextTickList.iterator();
+ while (iterator.hasNext()) {
+ NextTickListEntry next = iterator.next();
+ if (!flag && next.b > this.worldData.getTime()) {
+ break;
+ }
+
+ IBlockData data = next.a().getBlockData();
+ if (next.a().isPowerSource(data) || next.a() instanceof IInventory) {
+ iterator.remove();
+ this.U.add(next);
+ }
+ }
+ }
+ // Paper end
+
this.methodProfiler.b();
this.methodProfiler.a("ticking");
Iterator iterator = this.U.iterator();
--
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2.7.3
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