Paper/patches/server/0858-More-DragonBattle-API.patch
Spottedleaf 8c5b837e05 Rework async chunk api implementation
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.
2024-11-18 23:00:59 -08:00

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4.3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sun, 18 Dec 2022 13:40:05 -0800
Subject: [PATCH] More DragonBattle API
== AT ==
public net.minecraft.world.level.dimension.end.EndDragonFight GATEWAY_COUNT
public net.minecraft.world.level.dimension.end.EndDragonFight gateways
public net.minecraft.world.level.dimension.end.EndDragonFight respawnCrystals
public net.minecraft.world.level.dimension.end.EndDragonFight spawnNewGateway(Lnet/minecraft/core/BlockPos;)V
diff --git a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
index 39b1d6ee10d4a10ab4fb339621ca80f27d383324..8ec6b33126096fb9e1de5f41290097e004d7a455 100644
--- a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
+++ b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
@@ -442,6 +442,24 @@ public class EndDragonFight {
this.gateways.clear();
}
+ // Paper start - More DragonBattle API
+ public boolean spawnNewGatewayIfPossible() {
+ if (!this.gateways.isEmpty()) {
+ this.spawnNewGateway();
+ return true;
+ }
+ return false;
+ }
+
+ public List<EndCrystal> getSpikeCrystals() {
+ final List<EndCrystal> endCrystals = new java.util.ArrayList<>();
+ for (final SpikeFeature.EndSpike spike : SpikeFeature.getSpikesForLevel(this.level)) {
+ endCrystals.addAll(this.level.getEntitiesOfClass(EndCrystal.class, spike.getTopBoundingBox()));
+ }
+ return endCrystals;
+ }
+ // Paper end - More DragonBattle API
+
private void spawnNewGateway() {
if (!this.gateways.isEmpty()) {
int i = (Integer) this.gateways.remove(this.gateways.size() - 1);
diff --git a/src/main/java/org/bukkit/craftbukkit/boss/CraftDragonBattle.java b/src/main/java/org/bukkit/craftbukkit/boss/CraftDragonBattle.java
index dc7fdc120f4317ee1b7935ef226eddb0406aee6e..6bfabb38b51115beb2a65a165f235347838b6006 100644
--- a/src/main/java/org/bukkit/craftbukkit/boss/CraftDragonBattle.java
+++ b/src/main/java/org/bukkit/craftbukkit/boss/CraftDragonBattle.java
@@ -137,4 +137,46 @@ public class CraftDragonBattle implements DragonBattle {
private DragonRespawnAnimation toNMSRespawnPhase(RespawnPhase phase) {
return (phase != RespawnPhase.NONE) ? DragonRespawnAnimation.values()[phase.ordinal()] : null;
}
+ // Paper start - More DragonBattle API
+ @Override
+ public int getGatewayCount() {
+ return EndDragonFight.GATEWAY_COUNT - this.handle.gateways.size();
+ }
+
+ @Override
+ public boolean spawnNewGateway() {
+ return this.handle.spawnNewGatewayIfPossible();
+ }
+
+ @Override
+ public void spawnNewGateway(final io.papermc.paper.math.Position position) {
+ this.handle.spawnNewGateway(io.papermc.paper.util.MCUtil.toBlockPos(position));
+ }
+
+ @Override
+ public java.util.List<org.bukkit.entity.EnderCrystal> getRespawnCrystals() {
+ if (this.handle.respawnCrystals == null) {
+ return java.util.Collections.emptyList();
+ }
+
+ final java.util.List<org.bukkit.entity.EnderCrystal> enderCrystals = new java.util.ArrayList<>();
+ for (final net.minecraft.world.entity.boss.enderdragon.EndCrystal endCrystal : this.handle.respawnCrystals) {
+ if (!endCrystal.isRemoved() && endCrystal.isAlive() && endCrystal.valid) {
+ enderCrystals.add(((org.bukkit.entity.EnderCrystal) endCrystal.getBukkitEntity()));
+ }
+ }
+ return java.util.Collections.unmodifiableList(enderCrystals);
+ }
+
+ @Override
+ public java.util.List<org.bukkit.entity.EnderCrystal> getHealingCrystals() {
+ final java.util.List<org.bukkit.entity.EnderCrystal> enderCrystals = new java.util.ArrayList<>();
+ for (final net.minecraft.world.entity.boss.enderdragon.EndCrystal endCrystal : this.handle.getSpikeCrystals()) {
+ if (!endCrystal.isRemoved() && endCrystal.isAlive() && endCrystal.valid) {
+ enderCrystals.add(((org.bukkit.entity.EnderCrystal) endCrystal.getBukkitEntity()));
+ }
+ }
+ return java.util.Collections.unmodifiableList(enderCrystals);
+ }
+ // Paper end - More DragonBattle API
}