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 Zeilen
3.3 KiB
Diff
61 Zeilen
3.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jakub Zacek <dawon@dawon.eu>
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Date: Mon, 4 Oct 2021 10:16:44 +0200
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Subject: [PATCH] Add methods to find targets for lightning strikes
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== AT ==
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public net.minecraft.server.level.ServerLevel findLightningRod(Lnet/minecraft/core/BlockPos;)Ljava/util/Optional;
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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 c72687fb23e8d01639cce7d79e3f97805d51e01f..778d3f3ea2247be5bd6edd382b872f6de5bc359c 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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@@ -764,6 +764,11 @@ public class ServerLevel extends Level implements WorldGenLevel {
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}
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protected BlockPos findLightningTargetAround(BlockPos pos) {
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+ // Paper start - Add methods to find targets for lightning strikes
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+ return this.findLightningTargetAround(pos, false);
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+ }
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+ public BlockPos findLightningTargetAround(BlockPos pos, boolean returnNullWhenNoTarget) {
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+ // Paper end - Add methods to find targets for lightning strikes
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BlockPos blockposition1 = this.getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, pos);
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Optional<BlockPos> optional = this.findLightningRod(blockposition1);
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@@ -778,6 +783,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
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if (!list.isEmpty()) {
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return ((LivingEntity) list.get(this.random.nextInt(list.size()))).blockPosition();
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} else {
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+ if (returnNullWhenNoTarget) return null; // Paper - Add methods to find targets for lightning strikes
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if (blockposition1.getY() == this.getMinBuildHeight() - 1) {
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blockposition1 = blockposition1.above(2);
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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index a41c6705aa7e04ad32395f89b95ca76617c9416d..390cacc7916d1322a7e1e8bff004d415e9fa5622 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
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@@ -689,6 +689,23 @@ public class CraftWorld extends CraftRegionAccessor implements World {
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return (LightningStrike) lightning.getBukkitEntity();
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}
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+ // Paper start - Add methods to find targets for lightning strikes
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+ @Override
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+ public Location findLightningRod(Location location) {
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+ return this.world.findLightningRod(io.papermc.paper.util.MCUtil.toBlockPosition(location))
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+ .map(blockPos -> io.papermc.paper.util.MCUtil.toLocation(this.world, blockPos)
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+ // get the actual rod pos
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+ .subtract(0, 1, 0))
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+ .orElse(null);
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+ }
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+
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+ @Override
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+ public Location findLightningTarget(Location location) {
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+ final BlockPos pos = this.world.findLightningTargetAround(io.papermc.paper.util.MCUtil.toBlockPosition(location), true);
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+ return pos == null ? null : io.papermc.paper.util.MCUtil.toLocation(this.world, pos);
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+ }
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+ // Paper end - Add methods to find targets for lightning strikes
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+
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@Override
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public boolean generateTree(Location loc, TreeType type) {
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return this.generateTree(loc, CraftWorld.rand, type);
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