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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.
19 lines
1.2 KiB
Diff
19 lines
1.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: William Blake Galbreath <blake.galbreath@gmail.com>
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Date: Sat, 13 Apr 2019 16:50:58 -0500
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Subject: [PATCH] Add option to allow iron golems to spawn in air
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diff --git a/src/main/java/net/minecraft/world/entity/animal/IronGolem.java b/src/main/java/net/minecraft/world/entity/animal/IronGolem.java
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index 615be0b85fb3d28a044c6bae6a0fe93ec4fca061..1807da10d07d1f6e4ddbc0fa1b8da34a688d67c3 100644
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--- a/src/main/java/net/minecraft/world/entity/animal/IronGolem.java
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+++ b/src/main/java/net/minecraft/world/entity/animal/IronGolem.java
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@@ -325,7 +325,7 @@ public class IronGolem extends AbstractGolem implements NeutralMob {
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BlockPos blockposition1 = blockposition.below();
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BlockState iblockdata = world.getBlockState(blockposition1);
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- if (!iblockdata.entityCanStandOn(world, blockposition1, this)) {
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+ if (!iblockdata.entityCanStandOn(world, blockposition1, this) && !this.level().paperConfig().entities.spawning.ironGolemsCanSpawnInAir) { // Paper - Add option to allow iron golems to spawn in air
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return false;
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} else {
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for (int i = 1; i < 3; ++i) {
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