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Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
27 Zeilen
1.2 KiB
Diff
27 Zeilen
1.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: lukas81298 <lukas81298@gommehd.net>
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Date: Mon, 25 Jan 2021 14:37:57 +0100
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Subject: [PATCH] added option to disable pathfinding updates on block changes
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diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
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index 644341b8bc3079c6f092226acd11667f64bd55a1..1fe013b94cf1b5332f1e4645dd35df01e11fe0d9 100644
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--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
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+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
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@@ -1374,6 +1374,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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this.getChunkSource().blockChanged(pos);
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this.pathTypesByPosCache.invalidate(pos);
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+ if (this.paperConfig().misc.updatePathfindingOnBlockUpdate) { // Paper - option to disable pathfinding updates
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VoxelShape voxelshape = oldState.getCollisionShape(this, pos);
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VoxelShape voxelshape1 = newState.getCollisionShape(this, pos);
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@@ -1415,6 +1416,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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}
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}
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+ } // Paper - option to disable pathfinding updates
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}
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@Override
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