Paper/patches/server/0295-Mob-Spawner-API-Enhancements.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Fri, 19 Apr 2019 12:41:13 -0500
Subject: [PATCH] Mob Spawner API Enhancements
== AT ==
public net.minecraft.world.level.BaseSpawner isNearPlayer(Lnet/minecraft/world/level/Level;Lnet/minecraft/core/BlockPos;)Z
public net.minecraft.world.level.BaseSpawner delay(Lnet/minecraft/world/level/Level;Lnet/minecraft/core/BlockPos;)V
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public net.minecraft.world.level.BaseSpawner setNextSpawnData(Lnet/minecraft/world/level/Level;Lnet/minecraft/core/BlockPos;Lnet/minecraft/world/level/SpawnData;)V
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diff --git a/src/main/java/net/minecraft/world/level/BaseSpawner.java b/src/main/java/net/minecraft/world/level/BaseSpawner.java
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index 3184f73ce799cc5202d2129be736e2fed9a3b8e3..b771f954f3fccd92e15196bf542e0d3703cfb71a 100644
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--- a/src/main/java/net/minecraft/world/level/BaseSpawner.java
+++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java
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@@ -228,7 +228,13 @@ public abstract class BaseSpawner {
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}
public void load(@Nullable Level world, BlockPos pos, CompoundTag nbt) {
+ // Paper start - use larger int if set
+ if (nbt.contains("Paper.Delay")) {
+ this.spawnDelay = nbt.getInt("Paper.Delay");
+ } else {
this.spawnDelay = nbt.getShort("Delay");
+ }
+ // Paper end
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boolean flag = nbt.contains("SpawnData", 10);
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if (flag) {
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@@ -251,9 +257,15 @@ public abstract class BaseSpawner {
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this.spawnPotentials = SimpleWeightedRandomList.single(this.nextSpawnData != null ? this.nextSpawnData : new SpawnData());
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}
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+ // Paper start - use ints if set
+ if (nbt.contains("Paper.MinSpawnDelay", net.minecraft.nbt.Tag.TAG_ANY_NUMERIC)) {
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+ this.minSpawnDelay = nbt.getInt("Paper.MinSpawnDelay");
+ this.maxSpawnDelay = nbt.getInt("Paper.MaxSpawnDelay");
+ this.spawnCount = nbt.getShort("SpawnCount");
+ } else // Paper end
if (nbt.contains("MinSpawnDelay", 99)) {
- this.minSpawnDelay = nbt.getShort("MinSpawnDelay");
- this.maxSpawnDelay = nbt.getShort("MaxSpawnDelay");
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+ this.minSpawnDelay = nbt.getInt("MinSpawnDelay"); // Paper - short -> int
+ this.maxSpawnDelay = nbt.getInt("MaxSpawnDelay"); // Paper - short -> int
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this.spawnCount = nbt.getShort("SpawnCount");
}
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@@ -270,9 +282,20 @@ public abstract class BaseSpawner {
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}
public CompoundTag save(CompoundTag nbt) {
- nbt.putShort("Delay", (short) this.spawnDelay);
- nbt.putShort("MinSpawnDelay", (short) this.minSpawnDelay);
- nbt.putShort("MaxSpawnDelay", (short) this.maxSpawnDelay);
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+ // Paper start
+ if (spawnDelay > Short.MAX_VALUE) {
+ nbt.putInt("Paper.Delay", this.spawnDelay);
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+ }
+ nbt.putShort("Delay", (short) Math.min(Short.MAX_VALUE, this.spawnDelay));
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+
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+ if (minSpawnDelay > Short.MAX_VALUE || maxSpawnDelay > Short.MAX_VALUE) {
+ nbt.putInt("Paper.MinSpawnDelay", this.minSpawnDelay);
+ nbt.putInt("Paper.MaxSpawnDelay", this.maxSpawnDelay);
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+ }
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+
+ nbt.putShort("MinSpawnDelay", (short) Math.min(Short.MAX_VALUE, this.minSpawnDelay));
+ nbt.putShort("MaxSpawnDelay", (short) Math.min(Short.MAX_VALUE, this.maxSpawnDelay));
+ // Paper end
nbt.putShort("SpawnCount", (short) this.spawnCount);
nbt.putShort("MaxNearbyEntities", (short) this.maxNearbyEntities);
nbt.putShort("RequiredPlayerRange", (short) this.requiredPlayerRange);
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diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java b/src/main/java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java
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index 777241d3196a7984042967bc67fcf7429a1ddee7..0d39223d1eaa3fe7065eb9dc9f945ca965d3b43e 100644
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--- a/src/main/java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftCreatureSpawner.java
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@@ -226,4 +226,28 @@ public class CraftCreatureSpawner extends CraftBlockEntityState<SpawnerBlockEnti
public CraftCreatureSpawner copy() {
return new CraftCreatureSpawner(this);
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}
+
+ // Paper start
+ @Override
+ public boolean isActivated() {
+ this.requirePlaced();
+ return this.getSnapshot().getSpawner().isNearPlayer(this.world.getHandle(), this.getPosition());
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+ }
+
+ @Override
+ public void resetTimer() {
+ this.requirePlaced();
+ this.getSnapshot().getSpawner().delay(this.world.getHandle(), this.getPosition());
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+ }
+
+ @Override
+ public void setSpawnedItem(org.bukkit.inventory.ItemStack itemStack) {
+ Preconditions.checkArgument(itemStack != null && !itemStack.getType().isAir(), "spawners cannot spawn air");
+ net.minecraft.world.item.ItemStack item = org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(itemStack);
+ net.minecraft.nbt.CompoundTag entity = new net.minecraft.nbt.CompoundTag();
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+ entity.putString("id", net.minecraft.core.registries.BuiltInRegistries.ENTITY_TYPE.getKey(net.minecraft.world.entity.EntityType.ITEM).toString());
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+ entity.put("Item", item.save(new net.minecraft.nbt.CompoundTag()));
+ this.getSnapshot().getSpawner().setNextSpawnData(this.isPlaced() ? this.world.getHandle() : null, this.getPosition(), new net.minecraft.world.level.SpawnData(entity, java.util.Optional.empty()));
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+ }
+ // Paper end
}