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8c5b837e05
Firstly, the old methods all routed to the CompletableFuture method. However, the CF method could not guarantee that if the caller was off-main that the future would be "completed" on-main. Since the callback methods used the CF one, this meant that the callback methods did not guarantee that the callbacks were to be called on the main thread. Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb) so that the methods with the callback are guaranteed to invoke the callback on the main thread. The CF behavior remains unchanged; it may still appear to complete on main if invoked off-main. Secondly, remove the scheduleOnMain invocation in the async chunk completion. This unnecessarily delays the callback by 1 tick. Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which will load chunks within an area. This method is provided as a helper as keeping all chunks loaded within an area can be complicated to implement for plugins (due to the lacking ticket API), and is already implemented internally anyways. Fourthly, remove the ticket addition that occured with getChunkAt and getChunkAtAsync. The ticket addition may delay the unloading of the chunk unnecessarily. It also fixes a very rare timing bug where the future/callback would be completed after the chunk unloads.
61 lines
3.3 KiB
Diff
61 lines
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 57b82b90ab55922e57ccf79c57296d1d2e34d6a2..50d4bd6223eb92c640a61ee61af862e794fbb519 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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@@ -740,6 +740,11 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
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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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@@ -754,6 +759,7 @@ public class ServerLevel extends Level implements ServerEntityGetter, WorldGenLe
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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.getMinY() - 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 6596af8332ca6abbcaa68cae60ba994c39767938..1812dcd6e21d6de834ce6c39b5b69cee31a5fa06 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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@@ -675,6 +675,23 @@ 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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