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c5a10665b8
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.
61 lines
3 KiB
Diff
61 lines
3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
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Date: Mon, 14 Mar 2022 22:46:05 -0700
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Subject: [PATCH] Implement getComputedBiome API
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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index 5d137f8c42356359701e1bea7525f82c018b502c..f6dd8665b9f6e2a8ff396deba8a021e695bedf7e 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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@@ -77,6 +77,13 @@ public abstract class CraftRegionAccessor implements RegionAccessor {
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return CraftBiome.minecraftHolderToBukkit(this.getHandle().getNoiseBiome(x >> 2, y >> 2, z >> 2));
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}
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+ // Paper start
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+ @Override
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+ public Biome getComputedBiome(int x, int y, int z) {
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+ return CraftBiome.minecraftHolderToBukkit(this.getHandle().getBiome(new BlockPos(x, y, z)));
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+ }
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+ // Paper end
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+
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@Override
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public void setBiome(Location location, Biome biome) {
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this.setBiome(location.getBlockX(), location.getBlockY(), location.getBlockZ(), biome);
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diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
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index 068b3735b6c50a7a2053c7dc39856f728fb7218a..6d10396347b69d9243ab902ecc68ede93fa17b7d 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
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+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
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@@ -340,6 +340,13 @@ public class CraftBlock implements Block {
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return this.getWorld().getBiome(this.getX(), this.getY(), this.getZ());
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}
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+ // Paper start
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+ @Override
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+ public Biome getComputedBiome() {
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+ return this.getWorld().getComputedBiome(this.getX(), this.getY(), this.getZ());
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+ }
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+ // Paper end
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+
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@Override
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public void setBiome(Biome bio) {
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this.getWorld().setBiome(this.getX(), this.getY(), this.getZ(), bio);
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diff --git a/src/main/java/org/bukkit/craftbukkit/generator/CraftLimitedRegion.java b/src/main/java/org/bukkit/craftbukkit/generator/CraftLimitedRegion.java
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index 7d6ee60b1d3e023e1eabc59eb591c3ae3d8ac043..eaa9ba70b0b80d86eb376a0641420093a7c9dfdb 100644
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--- a/src/main/java/org/bukkit/craftbukkit/generator/CraftLimitedRegion.java
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+++ b/src/main/java/org/bukkit/craftbukkit/generator/CraftLimitedRegion.java
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@@ -165,6 +165,14 @@ public class CraftLimitedRegion extends CraftRegionAccessor implements LimitedRe
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return super.getBiome(x, y, z);
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}
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+ // Paper start
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+ @Override
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+ public Biome getComputedBiome(int x, int y, int z) {
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+ Preconditions.checkArgument(this.isInRegion(x, y, z), "Coordinates %s, %s, %s are not in the region", x, y, z);
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+ return super.getComputedBiome(x, y, z);
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+ }
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+ // Paper end
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+
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@Override
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public void setBiome(int x, int y, int z, Holder<net.minecraft.world.level.biome.Biome> biomeBase) {
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Preconditions.checkArgument(this.isInRegion(x, y, z), "Coordinates %s, %s, %s are not in the region", x, y, z);
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