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Paper/patches/server/0729-Add-paper-mobcaps-and-paper-playermobcaps.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
Date: Mon, 16 Aug 2021 01:31:54 -0500
Subject: [PATCH] Add '/paper mobcaps' and '/paper playermobcaps'
Add commands to get the mobcaps for a world, as well as the mobcaps for
each player when per-player mob spawning is enabled.
Also has a hover text on each mob category listing what entity types are
in said category
diff --git a/src/main/java/com/destroystokyo/paper/PaperCommand.java b/src/main/java/com/destroystokyo/paper/PaperCommand.java
index fa0b824747c5b15cfb29e22b2d30b9c6932c1320..ca401a3203176578f9cd399aa740f07147e45de9 100644
--- a/src/main/java/com/destroystokyo/paper/PaperCommand.java
+++ b/src/main/java/com/destroystokyo/paper/PaperCommand.java
@@ -3,6 +3,7 @@ package com.destroystokyo.paper;
import com.destroystokyo.paper.io.SyncLoadFinder;
import com.google.common.base.Functions;
import com.google.common.base.Joiner;
+import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
@@ -10,6 +11,13 @@ import com.google.common.collect.Maps;
import com.google.gson.JsonObject;
import com.google.gson.internal.Streams;
import com.google.gson.stream.JsonWriter;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.ComponentLike;
+import net.kyori.adventure.text.JoinConfiguration;
+import net.kyori.adventure.text.TextComponent;
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.format.TextColor;
+import net.minecraft.core.Registry;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.MCUtil;
import net.minecraft.server.MinecraftServer;
@@ -19,10 +27,12 @@ import net.minecraft.server.level.ServerLevel;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.server.level.ThreadedLevelLightEngine;
import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.entity.MobCategory;
import net.minecraft.world.level.ChunkPos;
import net.minecraft.network.protocol.game.ClientboundLightUpdatePacket;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.MCUtil;
+import net.minecraft.world.level.NaturalSpawner;
import org.apache.commons.lang3.tuple.MutablePair;
import org.apache.commons.lang3.tuple.Pair;
import org.bukkit.Bukkit;
@@ -54,6 +64,7 @@ import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
+import java.util.function.ToIntFunction;
import java.util.stream.Collectors;
import static net.kyori.adventure.text.Component.text;
@@ -66,7 +77,7 @@ import static net.kyori.adventure.text.format.NamedTextColor.YELLOW;
public class PaperCommand extends Command {
private static final String BASE_PERM = "bukkit.command.paper.";
- private static final ImmutableSet<String> SUBCOMMANDS = ImmutableSet.<String>builder().add("heap", "entity", "reload", "version", "debug", "chunkinfo", "fixlight", "syncloadinfo", "dumpitem").build();
+ private static final ImmutableSet<String> SUBCOMMANDS = ImmutableSet.<String>builder().add("heap", "entity", "reload", "version", "debug", "chunkinfo", "fixlight", "syncloadinfo", "dumpitem", "mobcaps", "playermobcaps").build();
public PaperCommand(String name) {
super(name);
@@ -99,6 +110,10 @@ public class PaperCommand extends Command {
return getListMatchingLast(sender, args, "help", "chunks");
}
break;
+ case "mobcaps":
+ return getListMatchingLast(sender, args, this.suggestMobcaps(sender, args));
+ case "playermobcaps":
+ return getListMatchingLast(sender, args, this.suggestPlayerMobcaps(sender, args));
case "chunkinfo":
List<String> worldNames = new ArrayList<>();
worldNames.add("*");
@@ -195,6 +210,12 @@ public class PaperCommand extends Command {
case "syncloadinfo":
this.doSyncLoadInfo(sender, args);
break;
+ case "mobcaps":
+ this.printMobcaps(sender, args);
+ break;
+ case "playermobcaps":
+ this.printPlayerMobcaps(sender, args);
+ break;
case "ver":
if (!testPermission(sender, "version")) break; // "ver" needs a special check because it's an alias. All other commands are checked up before the switch statement (because they are present in the SUBCOMMANDS set)
case "version":
@@ -253,6 +274,184 @@ public class PaperCommand extends Command {
}
}
+ public static final Map<MobCategory, TextColor> MOB_CATEGORY_COLORS = ImmutableMap.<MobCategory, TextColor>builder()
+ .put(MobCategory.MONSTER, NamedTextColor.RED)
+ .put(MobCategory.CREATURE, NamedTextColor.GREEN)
+ .put(MobCategory.AMBIENT, NamedTextColor.GRAY)
+ .put(MobCategory.AXOLOTLS, TextColor.color(0x7324FF))
+ .put(MobCategory.UNDERGROUND_WATER_CREATURE, TextColor.color(0x3541E6))
+ .put(MobCategory.WATER_CREATURE, TextColor.color(0x006EFF))
+ .put(MobCategory.WATER_AMBIENT, TextColor.color(0x00B3FF))
+ .put(MobCategory.MISC, TextColor.color(0x636363))
+ .build();
+
+ private List<String> suggestMobcaps(CommandSender sender, String[] args) {
+ if (args.length == 2) {
+ final List<String> worlds = new ArrayList<>(Bukkit.getWorlds().stream().map(World::getName).toList());
+ worlds.add("*");
+ return worlds;
+ }
+
+ return Collections.emptyList();
+ }
+
+ private List<String> suggestPlayerMobcaps(CommandSender sender, String[] args) {
+ if (args.length == 2) {
+ final List<String> list = new ArrayList<>();
+ for (final Player player : Bukkit.getOnlinePlayers()) {
+ if (!(sender instanceof Player senderPlayer) || senderPlayer.canSee(player)) {
+ list.add(player.getName());
+ }
+ }
+ return list;
+ }
+
+ return Collections.emptyList();
+ }
+
+ private void printMobcaps(CommandSender sender, String[] args) {
+ final List<World> worlds;
+ if (args.length == 1) {
+ if (sender instanceof Player player) {
+ worlds = List.of(player.getWorld());
+ } else {
+ sender.sendMessage(Component.text("Must specify a world! ex: '/paper mobcaps world'", NamedTextColor.RED));
+ return;
+ }
+ } else if (args.length == 2) {
+ final String input = args[1];
+ if (input.equals("*")) {
+ worlds = Bukkit.getWorlds();
+ } else {
+ final World world = Bukkit.getWorld(input);
+ if (world == null) {
+ sender.sendMessage(Component.text("'" + input + "' is not a valid world!", NamedTextColor.RED));
+ return;
+ } else {
+ worlds = List.of(world);
+ }
+ }
+ } else {
+ sender.sendMessage(Component.text("Too many arguments!", NamedTextColor.RED));
+ return;
+ }
+
+ for (final World world : worlds) {
+ final ServerLevel level = ((CraftWorld) world).getHandle();
+ final NaturalSpawner.SpawnState state = level.getChunkSource().getLastSpawnState();
+
+ final int chunks;
+ if (state == null) {
+ chunks = 0;
+ } else {
+ chunks = state.getSpawnableChunkCount();
+ }
+ sender.sendMessage(Component.join(JoinConfiguration.noSeparators(),
+ Component.text("Mobcaps for world: "),
+ Component.text(world.getName(), NamedTextColor.AQUA),
+ Component.text(" (" + chunks + " spawnable chunks)")
+ ));
+
+ sender.sendMessage(this.buildMobcapsComponent(
+ category -> {
+ if (state == null) {
+ return 0;
+ } else {
+ return state.getMobCategoryCounts().getOrDefault(category, 0);
+ }
+ },
+ category -> NaturalSpawner.globalLimitForCategory(level, category, chunks)
+ ));
+ }
+ }
+
+ private void printPlayerMobcaps(CommandSender sender, String[] args) {
+ final Player player;
+ if (args.length == 1) {
+ if (sender instanceof Player pl) {
+ player = pl;
+ } else {
+ sender.sendMessage(Component.text("Must specify a player! ex: '/paper playermobcount playerName'", NamedTextColor.RED));
+ return;
+ }
+ } else if (args.length == 2) {
+ final String input = args[1];
+ player = Bukkit.getPlayerExact(input);
+ if (player == null) {
+ sender.sendMessage(Component.text("Could not find player named '" + input + "'", NamedTextColor.RED));
+ return;
+ }
+ } else {
+ sender.sendMessage(Component.text("Too many arguments!", NamedTextColor.RED));
+ return;
+ }
+
+ final ServerPlayer serverPlayer = ((CraftPlayer) player).getHandle();
+ final ServerLevel level = serverPlayer.getLevel();
+
+ if (!level.paperConfig.perPlayerMobSpawns) {
+ sender.sendMessage(Component.text("Use '/paper mobcaps' for worlds where per-player mob spawning is disabled.", NamedTextColor.RED));
+ return;
+ }
+
+ sender.sendMessage(Component.join(JoinConfiguration.noSeparators(), Component.text("Mobcaps for player: "), Component.text(player.getName(), NamedTextColor.GREEN)));
+ sender.sendMessage(this.buildMobcapsComponent(
+ category -> level.chunkSource.chunkMap.getMobCountNear(serverPlayer, category),
+ category -> level.getWorld().getSpawnLimitUnsafe(org.bukkit.craftbukkit.util.CraftSpawnCategory.toBukkit(category))
+ ));
+ }
+
+ private Component buildMobcapsComponent(final ToIntFunction<MobCategory> countGetter, final ToIntFunction<MobCategory> limitGetter) {
+ return MOB_CATEGORY_COLORS.entrySet().stream()
+ .map(entry -> {
+ final MobCategory category = entry.getKey();
+ final TextColor color = entry.getValue();
+
+ final Component categoryHover = Component.join(JoinConfiguration.noSeparators(),
+ Component.text("Entity types in category ", TextColor.color(0xE0E0E0)),
+ Component.text(category.getName(), color),
+ Component.text(':', NamedTextColor.GRAY),
+ Component.newline(),
+ Component.newline(),
+ Registry.ENTITY_TYPE.entrySet().stream()
+ .filter(it -> it.getValue().getCategory() == category)
+ .map(it -> Component.translatable(it.getValue().getDescriptionId()))
+ .collect(Component.toComponent(Component.text(", ", NamedTextColor.GRAY)))
+ );
+
+ final Component categoryComponent = Component.text()
+ .content(" " + category.getName())
+ .color(color)
+ .hoverEvent(categoryHover)
+ .build();
+
+ final TextComponent.Builder builder = Component.text()
+ .append(
+ categoryComponent,
+ Component.text(": ", NamedTextColor.GRAY)
+ );
+ final int limit = limitGetter.applyAsInt(category);
+ if (limit != -1) {
+ builder.append(
+ Component.text(countGetter.applyAsInt(category)),
+ Component.text("/", NamedTextColor.GRAY),
+ Component.text(limit)
+ );
+ } else {
+ builder.append(Component.text()
+ .append(
+ Component.text('n'),
+ Component.text("/", NamedTextColor.GRAY),
+ Component.text('a')
+ )
+ .hoverEvent(Component.text("This category does not naturally spawn.")));
+ }
+ return builder;
+ })
+ .map(ComponentLike::asComponent)
+ .collect(Component.toComponent(Component.newline()));
+ }
+
private void doChunkInfo(CommandSender sender, String[] args) {
List<org.bukkit.World> worlds;
if (args.length < 2 || args[1].equals("*")) {
diff --git a/src/main/java/net/minecraft/world/level/NaturalSpawner.java b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
index 611dbcebd54604da5bd3e6ed510032db2a70401d..a04b8eeb9b4cbd700b95552c46fdf0da4c03b3eb 100644
--- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
@@ -191,6 +191,16 @@ public final class NaturalSpawner {
world.getProfiler().pop();
}
+ // Paper start
+ public static int globalLimitForCategory(final ServerLevel level, final MobCategory category, final int spawnableChunkCount) {
+ final int categoryLimit = level.getWorld().getSpawnLimitUnsafe(CraftSpawnCategory.toBukkit(category));
+ if (categoryLimit < 1) {
+ return categoryLimit;
+ }
+ return categoryLimit * spawnableChunkCount / NaturalSpawner.MAGIC_NUMBER;
+ }
+ // Paper end
+
public static void spawnCategoryForChunk(MobCategory group, ServerLevel world, LevelChunk chunk, NaturalSpawner.SpawnPredicate checker, NaturalSpawner.AfterSpawnCallback runner) {
// Paper start - add parameters and int ret type
spawnCategoryForChunk(group, world, chunk, checker, runner, Integer.MAX_VALUE, null);
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 9486c53285fabb2d72b2bc3881673cd6640bd50e..a97565735bf6005b77859e8453171cd8eaefab81 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -2131,6 +2131,11 @@ public final class CraftServer implements Server {
@Override
public int getSpawnLimit(SpawnCategory spawnCategory) {
+ // Paper start
+ return this.getSpawnLimitUnsafe(spawnCategory);
+ }
+ public int getSpawnLimitUnsafe(final SpawnCategory spawnCategory) {
+ // Paper end
return this.spawnCategoryLimit.getOrDefault(spawnCategory, -1);
}
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
index 8187f1fd64add9b76e56df7f15024bb1eb7e393d..ed2c1f50fd8baee7c291675177f1bc2d86ee9d68 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
@@ -1706,9 +1706,14 @@ public class CraftWorld extends CraftRegionAccessor implements World {
Validate.notNull(spawnCategory, "SpawnCategory cannot be null");
Validate.isTrue(CraftSpawnCategory.isValidForLimits(spawnCategory), "SpawnCategory." + spawnCategory + " are not supported.");
+ // Paper start
+ return this.getSpawnLimitUnsafe(spawnCategory);
+ }
+ public final int getSpawnLimitUnsafe(final SpawnCategory spawnCategory) {
int limit = this.spawnCategoryLimit.getOrDefault(spawnCategory, -1);
if (limit < 0) {
- limit = this.server.getSpawnLimit(spawnCategory);
+ limit = this.server.getSpawnLimitUnsafe(spawnCategory);
+ // Paper end
}
return limit;
}
diff --git a/src/test/java/io/papermc/paper/PaperCommandTest.java b/src/test/java/io/papermc/paper/PaperCommandTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..4b5b368ef17bdb90f50e6ccc1f814cf93c7c0590
--- /dev/null
+++ b/src/test/java/io/papermc/paper/PaperCommandTest.java
@@ -0,0 +1,21 @@
+package io.papermc.paper;
+
+import com.destroystokyo.paper.PaperCommand;
+import java.util.HashSet;
+import java.util.Set;
+import net.minecraft.world.entity.MobCategory;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class PaperCommandTest {
+ @Test
+ public void testMobCategoryColors() {
+ final Set<String> missing = new HashSet<>();
+ for (final MobCategory value : MobCategory.values()) {
+ if (!PaperCommand.MOB_CATEGORY_COLORS.containsKey(value)) {
+ missing.add(value.getName());
+ }
+ }
+ Assert.assertTrue("PaperCommand.MOB_CATEGORY_COLORS map missing TextColors for [" + String.join(", ", missing + "]"), missing.isEmpty());
+ }
+}
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