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PaperMC/patches/server/0430-Implement-Mob-Goal-API.patch
Nassim Jahnke 06db5d08b0
Updated Upstream (Bukkit/CraftBukkit) (#6589) 
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
44cfe143 SPIGOT-6249: Add Missing Effect Constants

CraftBukkit Changes:
14928261 SPIGOT-6249: Add Missing Effect Constants
332335e1 SPIGOT-6731: "Nag author" message in CraftServer lists one author only
6cd975d0 SPIGOT-5732, SPIGOT-6387: Overhaul Hanging entities
2021-09-11 19:27:48 +02:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MiniDigger <admin@minidigger.me>
Date: Fri, 3 Jan 2020 16:26:19 +0100
Subject: [PATCH] Implement Mob Goal API
diff --git a/build.gradle.kts b/build.gradle.kts
index b35e54380cb23758a813fa24d13b888f36906c23..12c2681e0abef8ea4981deec431a9269df6cea54 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -62,6 +62,7 @@ dependencies {
implementation("org.quiltmc:tiny-mappings-parser:0.3.0") // Paper - needed to read mappings for stacktrace deobfuscation
+ testImplementation("io.github.classgraph:classgraph:4.8.47") // Paper - mob goal test
testImplementation("junit:junit:4.13.1")
testImplementation("org.hamcrest:hamcrest-library:1.3")
}
diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/MobGoalHelper.java b/src/main/java/com/destroystokyo/paper/entity/ai/MobGoalHelper.java
new file mode 100644
index 0000000000000000000000000000000000000000..181abe014baba9ac51064c003381281a8fa43fe4
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/entity/ai/MobGoalHelper.java
@@ -0,0 +1,367 @@
+package com.destroystokyo.paper.entity.ai;
+
+import com.destroystokyo.paper.entity.RangedEntity;
+import com.destroystokyo.paper.util.set.OptimizedSmallEnumSet;
+import com.google.common.collect.BiMap;
+import com.google.common.collect.HashBiMap;
+import io.papermc.paper.util.ObfHelper;
+import java.lang.reflect.Constructor;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import net.minecraft.world.entity.FlyingMob;
+import net.minecraft.world.entity.PathfinderMob;
+import net.minecraft.world.entity.TamableAnimal;
+import net.minecraft.world.entity.ai.goal.Goal;
+import net.minecraft.world.entity.ambient.AmbientCreature;
+import net.minecraft.world.entity.animal.AbstractFish;
+import net.minecraft.world.entity.animal.AbstractGolem;
+import net.minecraft.world.entity.animal.AbstractSchoolingFish;
+import net.minecraft.world.entity.animal.Animal;
+import net.minecraft.world.entity.animal.Pufferfish;
+import net.minecraft.world.entity.animal.ShoulderRidingEntity;
+import net.minecraft.world.entity.animal.SnowGolem;
+import net.minecraft.world.entity.animal.WaterAnimal;
+import net.minecraft.world.entity.animal.horse.AbstractChestedHorse;
+import net.minecraft.world.entity.boss.wither.WitherBoss;
+import net.minecraft.world.entity.monster.AbstractIllager;
+import net.minecraft.world.entity.monster.EnderMan;
+import net.minecraft.world.entity.monster.PatrollingMonster;
+import net.minecraft.world.entity.monster.RangedAttackMob;
+import net.minecraft.world.entity.monster.SpellcasterIllager;
+import net.minecraft.world.entity.monster.ZombifiedPiglin;
+import net.minecraft.world.entity.monster.piglin.AbstractPiglin;
+import org.bukkit.NamespacedKey;
+import org.bukkit.entity.AbstractHorse;
+import org.bukkit.entity.AbstractSkeleton;
+import org.bukkit.entity.AbstractVillager;
+import org.bukkit.entity.Ageable;
+import org.bukkit.entity.Ambient;
+import org.bukkit.entity.Animals;
+import org.bukkit.entity.Bat;
+import org.bukkit.entity.Bee;
+import org.bukkit.entity.Blaze;
+import org.bukkit.entity.Cat;
+import org.bukkit.entity.CaveSpider;
+import org.bukkit.entity.ChestedHorse;
+import org.bukkit.entity.Chicken;
+import org.bukkit.entity.Cod;
+import org.bukkit.entity.Cow;
+import org.bukkit.entity.Creature;
+import org.bukkit.entity.Creeper;
+import org.bukkit.entity.Dolphin;
+import org.bukkit.entity.Donkey;
+import org.bukkit.entity.Drowned;
+import org.bukkit.entity.ElderGuardian;
+import org.bukkit.entity.EnderDragon;
+import org.bukkit.entity.Enderman;
+import org.bukkit.entity.Endermite;
+import org.bukkit.entity.Evoker;
+import org.bukkit.entity.Fish;
+import org.bukkit.entity.Flying;
+import org.bukkit.entity.Fox;
+import org.bukkit.entity.Ghast;
+import org.bukkit.entity.Giant;
+import org.bukkit.entity.Golem;
+import org.bukkit.entity.Guardian;
+import org.bukkit.entity.Hoglin;
+import org.bukkit.entity.Horse;
+import org.bukkit.entity.Husk;
+import org.bukkit.entity.Illager;
+import org.bukkit.entity.Illusioner;
+import org.bukkit.entity.IronGolem;
+import org.bukkit.entity.Llama;
+import org.bukkit.entity.MagmaCube;
+import org.bukkit.entity.Mob;
+import org.bukkit.entity.Monster;
+import org.bukkit.entity.Mule;
+import org.bukkit.entity.MushroomCow;
+import org.bukkit.entity.Ocelot;
+import org.bukkit.entity.Panda;
+import org.bukkit.entity.Parrot;
+import org.bukkit.entity.Phantom;
+import org.bukkit.entity.Pig;
+import org.bukkit.entity.PigZombie;
+import org.bukkit.entity.Piglin;
+import org.bukkit.entity.PiglinAbstract;
+import org.bukkit.entity.PiglinBrute;
+import org.bukkit.entity.Pillager;
+import org.bukkit.entity.PolarBear;
+import org.bukkit.entity.PufferFish;
+import org.bukkit.entity.Rabbit;
+import org.bukkit.entity.Raider;
+import org.bukkit.entity.Ravager;
+import org.bukkit.entity.Salmon;
+import org.bukkit.entity.Sheep;
+import org.bukkit.entity.Shulker;
+import org.bukkit.entity.Silverfish;
+import org.bukkit.entity.Skeleton;
+import org.bukkit.entity.SkeletonHorse;
+import org.bukkit.entity.Slime;
+import org.bukkit.entity.Snowman;
+import org.bukkit.entity.Spellcaster;
+import org.bukkit.entity.Spider;
+import org.bukkit.entity.Squid;
+import org.bukkit.entity.Stray;
+import org.bukkit.entity.Strider;
+import org.bukkit.entity.Tameable;
+import org.bukkit.entity.TraderLlama;
+import org.bukkit.entity.TropicalFish;
+import org.bukkit.entity.Turtle;
+import org.bukkit.entity.Vex;
+import org.bukkit.entity.Villager;
+import org.bukkit.entity.Vindicator;
+import org.bukkit.entity.WanderingTrader;
+import org.bukkit.entity.WaterMob;
+import org.bukkit.entity.Witch;
+import org.bukkit.entity.Wither;
+import org.bukkit.entity.WitherSkeleton;
+import org.bukkit.entity.Wolf;
+import org.bukkit.entity.Zoglin;
+import org.bukkit.entity.Zombie;
+import org.bukkit.entity.ZombieHorse;
+import org.bukkit.entity.ZombieVillager;
+
+public class MobGoalHelper {
+
+ private static final BiMap<String, String> deobfuscationMap = HashBiMap.create();
+ private static final Map<Class<? extends Goal>, Class<? extends Mob>> entityClassCache = new HashMap<>();
+ private static final Map<Class<? extends net.minecraft.world.entity.Mob>, Class<? extends Mob>> bukkitMap = new HashMap<>();
+
+ static final Set<String> ignored = new HashSet<>();
+
+ static {
+ // TODO these kinda should be checked on each release, in case obfuscation changes
+ deobfuscationMap.put("abstract_skeleton_1", "abstract_skeleton_melee");
+
+ ignored.add("goal_selector_1");
+ ignored.add("goal_selector_2");
+ ignored.add("selector_1");
+ ignored.add("selector_2");
+ ignored.add("wrapped");
+
+ bukkitMap.put(net.minecraft.world.entity.Mob.class, Mob.class);
+ bukkitMap.put(net.minecraft.world.entity.AgeableMob.class, Ageable.class);
+ bukkitMap.put(AmbientCreature.class, Ambient.class);
+ bukkitMap.put(Animal.class, Animals.class);
+ bukkitMap.put(net.minecraft.world.entity.ambient.Bat.class, Bat.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Bee.class, Bee.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Blaze.class, Blaze.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Cat.class, Cat.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.CaveSpider.class, CaveSpider.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Chicken.class, Chicken.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Cod.class, Cod.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Cow.class, Cow.class);
+ bukkitMap.put(PathfinderMob.class, Creature.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Creeper.class, Creeper.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Dolphin.class, Dolphin.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Drowned.class, Drowned.class);
+ bukkitMap.put(net.minecraft.world.entity.boss.enderdragon.EnderDragon.class, EnderDragon.class);
+ bukkitMap.put(EnderMan.class, Enderman.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Endermite.class, Endermite.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Evoker.class, Evoker.class);
+ bukkitMap.put(AbstractFish.class, Fish.class);
+ bukkitMap.put(AbstractSchoolingFish.class, Fish.class); // close enough
+ bukkitMap.put(FlyingMob.class, Flying.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Fox.class, Fox.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Ghast.class, Ghast.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Giant.class, Giant.class);
+ bukkitMap.put(AbstractGolem.class, Golem.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Guardian.class, Guardian.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.ElderGuardian.class, ElderGuardian.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.horse.Horse.class, Horse.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.horse.AbstractHorse.class, AbstractHorse.class);
+ bukkitMap.put(AbstractChestedHorse.class, ChestedHorse.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.horse.Donkey.class, Donkey.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.horse.Mule.class, Mule.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.horse.SkeletonHorse.class, SkeletonHorse.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.horse.ZombieHorse.class, ZombieHorse.class);
+ bukkitMap.put(AbstractIllager.class, Illager.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Illusioner.class, Illusioner.class);
+ bukkitMap.put(SpellcasterIllager.class, Spellcaster.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.IronGolem.class, IronGolem.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.horse.Llama.class, Llama.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.horse.TraderLlama.class, TraderLlama.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.MagmaCube.class, MagmaCube.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Monster.class, Monster.class);
+ bukkitMap.put(PatrollingMonster.class, Raider.class); // close enough
+ bukkitMap.put(net.minecraft.world.entity.animal.MushroomCow.class, MushroomCow.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Ocelot.class, Ocelot.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Panda.class, Panda.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Parrot.class, Parrot.class);
+ bukkitMap.put(ShoulderRidingEntity.class, Parrot.class); // close enough
+ bukkitMap.put(net.minecraft.world.entity.monster.Phantom.class, Phantom.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Pig.class, Pig.class);
+ bukkitMap.put(ZombifiedPiglin.class, PigZombie.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Pillager.class, Pillager.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.PolarBear.class, PolarBear.class);
+ bukkitMap.put(Pufferfish.class, PufferFish.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Rabbit.class, Rabbit.class);
+ bukkitMap.put(net.minecraft.world.entity.raid.Raider.class, Raider.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Ravager.class, Ravager.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Salmon.class, Salmon.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Sheep.class, Sheep.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Shulker.class, Shulker.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Silverfish.class, Silverfish.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Skeleton.class, Skeleton.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.AbstractSkeleton.class, AbstractSkeleton.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Stray.class, Stray.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.WitherSkeleton.class, WitherSkeleton.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Slime.class, Slime.class);
+ bukkitMap.put(SnowGolem.class, Snowman.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Spider.class, Spider.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Squid.class, Squid.class);
+ bukkitMap.put(TamableAnimal.class, Tameable.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.TropicalFish.class, TropicalFish.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Turtle.class, Turtle.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Vex.class, Vex.class);
+ bukkitMap.put(net.minecraft.world.entity.npc.Villager.class, Villager.class);
+ bukkitMap.put(net.minecraft.world.entity.npc.AbstractVillager.class, AbstractVillager.class);
+ bukkitMap.put(net.minecraft.world.entity.npc.WanderingTrader.class, WanderingTrader.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Vindicator.class, Vindicator.class);
+ bukkitMap.put(WaterAnimal.class, WaterMob.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Witch.class, Witch.class);
+ bukkitMap.put(WitherBoss.class, Wither.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.Wolf.class, Wolf.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Zombie.class, Zombie.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Husk.class, Husk.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.ZombieVillager.class, ZombieVillager.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.hoglin.Hoglin.class, Hoglin.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.piglin.Piglin.class, Piglin.class);
+ bukkitMap.put(AbstractPiglin.class, PiglinAbstract.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.piglin.PiglinBrute.class, PiglinBrute.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Strider.class, Strider.class);
+ bukkitMap.put(net.minecraft.world.entity.monster.Zoglin.class, Zoglin.class);
+ bukkitMap.put(net.minecraft.world.entity.GlowSquid.class, org.bukkit.entity.GlowSquid.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.axolotl.Axolotl.class, org.bukkit.entity.Axolotl.class);
+ bukkitMap.put(net.minecraft.world.entity.animal.goat.Goat.class, org.bukkit.entity.Goat.class);
+ }
+
+ public static String getUsableName(Class<?> clazz) {
+ String name = ObfHelper.INSTANCE.deobfClassName(clazz.getName());
+ name = name.substring(name.lastIndexOf(".") + 1);
+ boolean flag = false;
+ // inner classes
+ if (name.contains("$")) {
+ String cut = name.substring(name.indexOf("$") + 1);
+ if (cut.length() <= 2) {
+ name = name.replace("Entity", "");
+ name = name.replace("$", "_");
+ flag = true;
+ } else {
+ // mapped, wooo
+ name = cut;
+ }
+ }
+ name = name.replace("PathfinderGoal", "");
+ name = name.replace("TargetGoal", "");
+ name = name.replace("Goal", "");
+ StringBuilder sb = new StringBuilder();
+ for (char c : name.toCharArray()) {
+ if (c >= 'A' && c <= 'Z') {
+ sb.append("_");
+ sb.append(Character.toLowerCase(c));
+ } else {
+ sb.append(c);
+ }
+ }
+ name = sb.toString();
+ name = name.replaceFirst("_", "");
+
+ if (flag && !deobfuscationMap.containsKey(name.toLowerCase()) && !ignored.contains(name)) {
+ System.out.println("need to map " + clazz.getName() + " (" + name.toLowerCase() + ")");
+ }
+
+ // did we rename this key?
+ return deobfuscationMap.getOrDefault(name, name);
+ }
+
+ public static EnumSet<GoalType> vanillaToPaper(OptimizedSmallEnumSet<Goal.Flag> types) {
+ EnumSet<GoalType> goals = EnumSet.noneOf(GoalType.class);
+ for (GoalType type : GoalType.values()) {
+ if (types.hasElement(paperToVanilla(type))) {
+ goals.add(type);
+ }
+ }
+ return goals;
+ }
+
+ public static GoalType vanillaToPaper(Goal.Flag type) {
+ switch (type) {
+ case MOVE:
+ return GoalType.MOVE;
+ case LOOK:
+ return GoalType.LOOK;
+ case JUMP:
+ return GoalType.JUMP;
+ case UNKNOWN_BEHAVIOR:
+ return GoalType.UNKNOWN_BEHAVIOR;
+ case TARGET:
+ return GoalType.TARGET;
+ default:
+ throw new IllegalArgumentException("Unknown vanilla mob goal type " + type.name());
+ }
+ }
+
+ public static EnumSet<Goal.Flag> paperToVanilla(EnumSet<GoalType> types) {
+ EnumSet<Goal.Flag> goals = EnumSet.noneOf(Goal.Flag.class);
+ for (GoalType type : types) {
+ goals.add(paperToVanilla(type));
+ }
+ return goals;
+ }
+
+ public static Goal.Flag paperToVanilla(GoalType type) {
+ switch (type) {
+ case MOVE:
+ return Goal.Flag.MOVE;
+ case LOOK:
+ return Goal.Flag.LOOK;
+ case JUMP:
+ return Goal.Flag.JUMP;
+ case UNKNOWN_BEHAVIOR:
+ return Goal.Flag.UNKNOWN_BEHAVIOR;
+ case TARGET:
+ return Goal.Flag.TARGET;
+ default:
+ throw new IllegalArgumentException("Unknown paper mob goal type " + type.name());
+ }
+ }
+
+ public static <T extends Mob> GoalKey<T> getKey(Class<? extends Goal> goalClass) {
+ String name = getUsableName(goalClass);
+ if (ignored.contains(name)) {
+ //noinspection unchecked
+ return (GoalKey<T>) GoalKey.of(Mob.class, NamespacedKey.minecraft(name));
+ }
+ return GoalKey.of(getEntity(goalClass), NamespacedKey.minecraft(name));
+ }
+
+ public static <T extends Mob> Class<T> getEntity(Class<? extends Goal> goalClass) {
+ //noinspection unchecked
+ return (Class<T>) entityClassCache.computeIfAbsent(goalClass, key -> {
+ for (Constructor<?> ctor : key.getDeclaredConstructors()) {
+ for (int i = 0; i < ctor.getParameterCount(); i++) {
+ Class<?> param = ctor.getParameterTypes()[i];
+ if (net.minecraft.world.entity.Mob.class.isAssignableFrom(param)) {
+ //noinspection unchecked
+ return toBukkitClass((Class<? extends net.minecraft.world.entity.Mob>) param);
+ } else if (RangedAttackMob.class.isAssignableFrom(param)) {
+ return RangedEntity.class;
+ }
+ }
+ }
+ throw new RuntimeException("Can't figure out applicable entity for mob goal " + goalClass); // maybe just return EntityInsentient?
+ });
+ }
+
+ public static Class<? extends Mob> toBukkitClass(Class<? extends net.minecraft.world.entity.Mob> nmsClass) {
+ Class<? extends Mob> bukkitClass = bukkitMap.get(nmsClass);
+ if (bukkitClass == null) {
+ throw new RuntimeException("Can't figure out applicable bukkit entity for nms entity " + nmsClass); // maybe just return Mob?
+ }
+ return bukkitClass;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/PaperCustomGoal.java b/src/main/java/com/destroystokyo/paper/entity/ai/PaperCustomGoal.java
new file mode 100644
index 0000000000000000000000000000000000000000..26c745dd9ccdfdd5c5039f2acc5201b9b91fb274
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/entity/ai/PaperCustomGoal.java
@@ -0,0 +1,53 @@
+package com.destroystokyo.paper.entity.ai;
+
+import org.bukkit.entity.Mob;
+
+/**
+ * Wraps api in vanilla
+ */
+public class PaperCustomGoal<T extends Mob> extends net.minecraft.world.entity.ai.goal.Goal {
+
+ private final Goal<T> handle;
+
+ public PaperCustomGoal(Goal<T> handle) {
+ this.handle = handle;
+
+ this.setFlags(MobGoalHelper.paperToVanilla(handle.getTypes()));
+ if (this.getFlags().size() == 0) {
+ this.getFlags().addUnchecked(Flag.UNKNOWN_BEHAVIOR);
+ }
+ }
+
+ @Override
+ public boolean canUse() {
+ return handle.shouldActivate();
+ }
+
+ @Override
+ public boolean canContinueToUse() {
+ return handle.shouldStayActive();
+ }
+
+ @Override
+ public void start() {
+ handle.start();
+ }
+
+ @Override
+ public void stop() {
+ handle.stop();
+ }
+
+ @Override
+ public void tick() {
+ handle.tick();
+ }
+
+ public Goal<T> getHandle() {
+ return handle;
+ }
+
+ public GoalKey<T> getKey() {
+ return handle.getKey();
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/PaperMobGoals.java b/src/main/java/com/destroystokyo/paper/entity/ai/PaperMobGoals.java
new file mode 100644
index 0000000000000000000000000000000000000000..336cc3c3b43bacf4f3661fa0bb0736b273f65418
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/entity/ai/PaperMobGoals.java
@@ -0,0 +1,213 @@
+package com.destroystokyo.paper.entity.ai;
+
+import java.util.Collection;
+import java.util.EnumSet;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Set;
+import net.minecraft.world.entity.ai.goal.GoalSelector;
+import net.minecraft.world.entity.ai.goal.WrappedGoal;
+import org.bukkit.craftbukkit.entity.CraftMob;
+import org.bukkit.entity.Mob;
+
+public class PaperMobGoals implements MobGoals {
+
+ @Override
+ public <T extends Mob> void addGoal(T mob, int priority, Goal<T> goal) {
+ CraftMob craftMob = (CraftMob) mob;
+ getHandle(craftMob, goal.getTypes()).addGoal(priority, new PaperCustomGoal<>(goal));
+ }
+
+ @Override
+ public <T extends Mob> void removeGoal(T mob, Goal<T> goal) {
+ CraftMob craftMob = (CraftMob) mob;
+ if (goal instanceof PaperCustomGoal) {
+ getHandle(craftMob, goal.getTypes()).removeGoal((net.minecraft.world.entity.ai.goal.Goal) goal);
+ } else if (goal instanceof PaperVanillaGoal) {
+ getHandle(craftMob, goal.getTypes()).removeGoal(((PaperVanillaGoal<?>) goal).getHandle());
+ } else {
+ List<net.minecraft.world.entity.ai.goal.Goal> toRemove = new LinkedList<>();
+ for (WrappedGoal item : getHandle(craftMob, goal.getTypes()).availableGoals) {
+ if (item.getGoal() instanceof PaperCustomGoal) {
+ //noinspection unchecked
+ if (((PaperCustomGoal<T>) item.getGoal()).getHandle() == goal) {
+ toRemove.add(item.getGoal());
+ }
+ }
+ }
+
+ for (net.minecraft.world.entity.ai.goal.Goal g : toRemove) {
+ getHandle(craftMob, goal.getTypes()).removeGoal(g);
+ }
+ }
+ }
+
+ @Override
+ public <T extends Mob> void removeAllGoals(T mob) {
+ for (GoalType type : GoalType.values()) {
+ removeAllGoals(mob, type);
+ }
+ }
+
+ @Override
+ public <T extends Mob> void removeAllGoals(T mob, GoalType type) {
+ for (Goal<T> goal : getAllGoals(mob, type)) {
+ removeGoal(mob, goal);
+ }
+ }
+
+ @Override
+ public <T extends Mob> void removeGoal(T mob, GoalKey<T> key) {
+ for (Goal<T> goal : getGoals(mob, key)) {
+ removeGoal(mob, goal);
+ }
+ }
+
+ @Override
+ public <T extends Mob> boolean hasGoal(T mob, GoalKey<T> key) {
+ for (Goal<T> g : getAllGoals(mob)) {
+ if (g.getKey().equals(key)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ @Override
+ public <T extends Mob> Goal<T> getGoal(T mob, GoalKey<T> key) {
+ for (Goal<T> g : getAllGoals(mob)) {
+ if (g.getKey().equals(key)) {
+ return g;
+ }
+ }
+ return null;
+ }
+
+ @Override
+ public <T extends Mob> Collection<Goal<T>> getGoals(T mob, GoalKey<T> key) {
+ Set<Goal<T>> goals = new HashSet<>();
+ for (Goal<T> g : getAllGoals(mob)) {
+ if (g.getKey().equals(key)) {
+ goals.add(g);
+ }
+ }
+ return goals;
+ }
+
+ @Override
+ public <T extends Mob> Collection<Goal<T>> getAllGoals(T mob) {
+ Set<Goal<T>> goals = new HashSet<>();
+ for (GoalType type : GoalType.values()) {
+ goals.addAll(getAllGoals(mob, type));
+ }
+ return goals;
+ }
+
+ @Override
+ public <T extends Mob> Collection<Goal<T>> getAllGoals(T mob, GoalType type) {
+ CraftMob craftMob = (CraftMob) mob;
+ Set<Goal<T>> goals = new HashSet<>();
+ for (WrappedGoal item : getHandle(craftMob, type).availableGoals) {
+ if (!item.getGoal().getFlags().hasElement(MobGoalHelper.paperToVanilla(type))) {
+ continue;
+ }
+
+ if (item.getGoal() instanceof PaperCustomGoal) {
+ //noinspection unchecked
+ goals.add(((PaperCustomGoal<T>) item.getGoal()).getHandle());
+ } else {
+ goals.add(item.getGoal().asPaperVanillaGoal());
+ }
+ }
+ return goals;
+ }
+
+ @Override
+ public <T extends Mob> Collection<Goal<T>> getAllGoalsWithout(T mob, GoalType type) {
+ CraftMob craftMob = (CraftMob) mob;
+ Set<Goal<T>> goals = new HashSet<>();
+ for (GoalType internalType : GoalType.values()) {
+ if (internalType == type) {
+ continue;
+ }
+ for (WrappedGoal item : getHandle(craftMob, internalType).availableGoals) {
+ if (item.getGoal().getFlags().hasElement(MobGoalHelper.paperToVanilla(type))) {
+ continue;
+ }
+
+ if (item.getGoal() instanceof PaperCustomGoal) {
+ //noinspection unchecked
+ goals.add(((PaperCustomGoal<T>) item.getGoal()).getHandle());
+ } else {
+ goals.add(item.getGoal().asPaperVanillaGoal());
+ }
+ }
+ }
+ return goals;
+ }
+
+ @Override
+ public <T extends Mob> Collection<Goal<T>> getRunningGoals(T mob) {
+ Set<Goal<T>> goals = new HashSet<>();
+ for (GoalType type : GoalType.values()) {
+ goals.addAll(getRunningGoals(mob, type));
+ }
+ return goals;
+ }
+
+ @Override
+ public <T extends Mob> Collection<Goal<T>> getRunningGoals(T mob, GoalType type) {
+ CraftMob craftMob = (CraftMob) mob;
+ Set<Goal<T>> goals = new HashSet<>();
+ getHandle(craftMob, type).getRunningGoals()
+ .filter(item -> item.getGoal().getFlags().hasElement(MobGoalHelper.paperToVanilla(type)))
+ .forEach(item -> {
+ if (item.getGoal() instanceof PaperCustomGoal) {
+ //noinspection unchecked
+ goals.add(((PaperCustomGoal<T>) item.getGoal()).getHandle());
+ } else {
+ goals.add(item.getGoal().asPaperVanillaGoal());
+ }
+ });
+ return goals;
+ }
+
+ @Override
+ public <T extends Mob> Collection<Goal<T>> getRunningGoalsWithout(T mob, GoalType type) {
+ CraftMob craftMob = (CraftMob) mob;
+ Set<Goal<T>> goals = new HashSet<>();
+ for (GoalType internalType : GoalType.values()) {
+ if (internalType == type) {
+ continue;
+ }
+ getHandle(craftMob, internalType).getRunningGoals()
+ .filter(item -> !item.getGoal().getFlags().hasElement(MobGoalHelper.paperToVanilla(type)))
+ .forEach(item -> {
+ if (item.getGoal() instanceof PaperCustomGoal) {
+ //noinspection unchecked
+ goals.add(((PaperCustomGoal<T>) item.getGoal()).getHandle());
+ } else {
+ goals.add(item.getGoal().asPaperVanillaGoal());
+ }
+ });
+ }
+ return goals;
+ }
+
+ private GoalSelector getHandle(CraftMob mob, EnumSet<GoalType> types) {
+ if (types.contains(GoalType.TARGET)) {
+ return mob.getHandle().targetSelector;
+ } else {
+ return mob.getHandle().goalSelector;
+ }
+ }
+
+ private GoalSelector getHandle(CraftMob mob, GoalType type) {
+ if (type == GoalType.TARGET) {
+ return mob.getHandle().targetSelector;
+ } else {
+ return mob.getHandle().goalSelector;
+ }
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/entity/ai/PaperVanillaGoal.java b/src/main/java/com/destroystokyo/paper/entity/ai/PaperVanillaGoal.java
new file mode 100644
index 0000000000000000000000000000000000000000..0d30e0b21b9024df939a9d070bd4a99b217e7c12
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/entity/ai/PaperVanillaGoal.java
@@ -0,0 +1,61 @@
+package com.destroystokyo.paper.entity.ai;
+
+import java.util.EnumSet;
+import net.minecraft.world.entity.ai.goal.Goal;
+import org.bukkit.entity.Mob;
+
+/**
+ * Wraps vanilla in api
+ */
+public class PaperVanillaGoal<T extends Mob> implements VanillaGoal<T> {
+
+ private final Goal handle;
+ private final GoalKey<T> key;
+
+ private final EnumSet<GoalType> types;
+
+ public PaperVanillaGoal(Goal handle) {
+ this.handle = handle;
+ this.key = MobGoalHelper.getKey(handle.getClass());
+ this.types = MobGoalHelper.vanillaToPaper(handle.getFlags());
+ }
+
+ public Goal getHandle() {
+ return handle;
+ }
+
+ @Override
+ public boolean shouldActivate() {
+ return handle.canUse();
+ }
+
+ @Override
+ public boolean shouldStayActive() {
+ return handle.canContinueToUse();
+ }
+
+ @Override
+ public void start() {
+ handle.start();
+ }
+
+ @Override
+ public void stop() {
+ handle.stop();
+ }
+
+ @Override
+ public void tick() {
+ handle.tick();
+ }
+
+ @Override
+ public GoalKey<T> getKey() {
+ return key;
+ }
+
+ @Override
+ public EnumSet<GoalType> getTypes() {
+ return types;
+ }
+}
diff --git a/src/main/java/com/destroystokyo/paper/util/set/OptimizedSmallEnumSet.java b/src/main/java/com/destroystokyo/paper/util/set/OptimizedSmallEnumSet.java
index 9df0006c1a283f77c4d01d9fce9062fc1c9bbb1f..b3329c6fcd6758a781a51f5ba8f5052ac1c77b49 100644
--- a/src/main/java/com/destroystokyo/paper/util/set/OptimizedSmallEnumSet.java
+++ b/src/main/java/com/destroystokyo/paper/util/set/OptimizedSmallEnumSet.java
@@ -64,4 +64,8 @@ public final class OptimizedSmallEnumSet<E extends Enum<E>> {
public boolean hasCommonElements(final OptimizedSmallEnumSet<E> other) {
return (other.backingSet & this.backingSet) != 0;
}
+
+ public boolean hasElement(final E element) {
+ return (this.backingSet & (1L << element.ordinal())) != 0;
+ }
}
diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/Goal.java b/src/main/java/net/minecraft/world/entity/ai/goal/Goal.java
index fabd20265863751ad980ee4a697f3f0d47df101f..3a4da2bb86a742985d309eb325dc843ae405cd8b 100644
--- a/src/main/java/net/minecraft/world/entity/ai/goal/Goal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/Goal.java
@@ -6,6 +6,14 @@ public abstract class Goal {
private final EnumSet<Goal.Flag> flags = EnumSet.noneOf(Goal.Flag.class); // Paper unused, but dummy to prevent plugins from crashing as hard. Theyll need to support paper in a special case if this is super important, but really doesn't seem like it would be.
private final com.destroystokyo.paper.util.set.OptimizedSmallEnumSet<net.minecraft.world.entity.ai.goal.Goal.Flag> goalTypes = new com.destroystokyo.paper.util.set.OptimizedSmallEnumSet<>(Goal.Flag.class); // Paper - remove streams from pathfindergoalselector
+ // Paper start make sure goaltypes is never empty
+ public Goal() {
+ if (this.goalTypes.size() == 0) {
+ this.goalTypes.addUnchecked(Flag.UNKNOWN_BEHAVIOR);
+ }
+ }
+ // Paper end
+
public abstract boolean canUse();
public boolean canContinueToUse() {
@@ -29,6 +37,10 @@ public abstract class Goal {
// Paper start - remove streams from pathfindergoalselector
this.goalTypes.clear();
this.goalTypes.addAllUnchecked(controls);
+ // make sure its never empty
+ if (this.goalTypes.size() == 0) {
+ this.goalTypes.addUnchecked(Flag.UNKNOWN_BEHAVIOR);
+ }
// Paper end - remove streams from pathfindergoalselector
}
@@ -43,7 +55,19 @@ public abstract class Goal {
// Paper end - remove streams from pathfindergoalselector
}
+ // Paper start - mob goal api
+ private com.destroystokyo.paper.entity.ai.PaperVanillaGoal<?> vanillaGoal = null;
+ public <T extends org.bukkit.entity.Mob> com.destroystokyo.paper.entity.ai.Goal<T> asPaperVanillaGoal() {
+ if(this.vanillaGoal == null) {
+ this.vanillaGoal = new com.destroystokyo.paper.entity.ai.PaperVanillaGoal<>(this);
+ }
+ //noinspection unchecked
+ return (com.destroystokyo.paper.entity.ai.Goal<T>) this.vanillaGoal;
+ }
+ // Paper end - mob goal api
+
public static enum Flag {
+ UNKNOWN_BEHAVIOR, // Paper - add UNKNOWN_BEHAVIOR
MOVE,
LOOK,
JUMP,
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 5c5bc6f7184ce604f27183dfe70919c8175e7708..fec172291cc2f5544943b3c0f2fe64221ba7d54c 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -2530,5 +2530,11 @@ public final class CraftServer implements Server {
public boolean isStopping() {
return net.minecraft.server.MinecraftServer.getServer().hasStopped();
}
+
+ private com.destroystokyo.paper.entity.ai.MobGoals mobGoals = new com.destroystokyo.paper.entity.ai.PaperMobGoals();
+ @Override
+ public com.destroystokyo.paper.entity.ai.MobGoals getMobGoals() {
+ return mobGoals;
+ }
// Paper end
}
diff --git a/src/test/java/com/destroystokyo/paper/entity/ai/VanillaMobGoalTest.java b/src/test/java/com/destroystokyo/paper/entity/ai/VanillaMobGoalTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..b2d510459bcf90a3611f3d91dae4ccc3d29b4079
--- /dev/null
+++ b/src/test/java/com/destroystokyo/paper/entity/ai/VanillaMobGoalTest.java
@@ -0,0 +1,103 @@
+package com.destroystokyo.paper.entity.ai;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.bukkit.entity.Mob;
+
+import io.github.classgraph.ClassGraph;
+import io.github.classgraph.ScanResult;
+
+public class VanillaMobGoalTest {
+
+ @Test
+ public void testKeys() {
+ List<GoalKey<?>> deprecated = new ArrayList<>();
+ List<GoalKey<?>> keys = new ArrayList<>();
+ for (Field field : VanillaGoal.class.getFields()) {
+ if (field.getType().equals(GoalKey.class)) {
+ try {
+ GoalKey<?> goalKey = (GoalKey<?>) field.get(null);
+ if (field.getAnnotation(Deprecated.class) != null) {
+ deprecated.add(goalKey);
+ } else {
+ keys.add(goalKey);
+ }
+ } catch (IllegalAccessException e) {
+ System.out.println("Skipping " + field.getName() + ": " + e.getMessage());
+ }
+ }
+ }
+
+ List<Class<?>> classes;
+ try (ScanResult scanResult = new ClassGraph().enableAllInfo().whitelistPackages("net.minecraft").scan()) {
+ classes = scanResult.getSubclasses(net.minecraft.world.entity.ai.goal.Goal.class.getName()).loadClasses();
+ }
+
+ List<GoalKey<?>> vanillaNames = classes.stream()
+ .filter(VanillaMobGoalTest::hasNoEnclosingClass)
+ .filter(clazz -> !Modifier.isAbstract(clazz.getModifiers()))
+ .filter(clazz -> !net.minecraft.world.entity.ai.goal.WrappedGoal.class.equals(clazz)) // TODO - properly fix
+ .map(goalClass -> MobGoalHelper.getKey((Class<? extends net.minecraft.world.entity.ai.goal.Goal>) goalClass))
+ .collect(Collectors.toList());
+
+ List<GoalKey<?>> missingFromAPI = new ArrayList<>(vanillaNames);
+ missingFromAPI.removeAll(keys);
+ missingFromAPI.removeIf(k -> MobGoalHelper.ignored.contains(k.getNamespacedKey().getKey()));
+ List<GoalKey<?>> missingFromVanilla = new ArrayList<>(keys);
+ missingFromVanilla.removeAll(vanillaNames);
+
+ boolean shouldFail = false;
+ if (missingFromAPI.size() != 0) {
+ System.out.println("Missing from API: ");
+ for (GoalKey<?> key : missingFromAPI) {
+ System.out.println("GoalKey<" + key.getEntityClass().getSimpleName() + "> " + key.getNamespacedKey().getKey().toUpperCase() +
+ " = GoalKey.of(" + key.getEntityClass().getSimpleName() + ".class, NamespacedKey.minecraft(\"" + key.getNamespacedKey().getKey() + "\"));");
+ }
+ shouldFail = true;
+ }
+ if (missingFromVanilla.size() != 0) {
+ System.out.println("Missing from vanilla: ");
+ missingFromVanilla.forEach(System.out::println);
+ shouldFail = true;
+ }
+
+ if (deprecated.size() != 0) {
+ System.out.println("Deprecated (might want to remove them at some point): ");
+ deprecated.forEach(System.out::println);
+ }
+
+ if (shouldFail) Assert.fail("See above");
+ }
+
+ private static boolean hasNoEnclosingClass(Class<?> clazz) {
+ return clazz.getEnclosingClass() == null || hasNoEnclosingClass(clazz.getSuperclass());
+ }
+
+ @Test
+ public void testBukkitMap() {
+ List<Class<?>> classes;
+ try (ScanResult scanResult = new ClassGraph().enableAllInfo().whitelistPackages("net.minecraft.world.entity").scan()) {
+ classes = scanResult.getSubclasses("net.minecraft.world.entity.Mob").loadClasses();
+ }
+ Assert.assertNotEquals("There are supposed to be more than 0 entity types!", Collections.emptyList(), classes);
+
+ boolean shouldFail = false;
+ for (Class<?> nmsClass : classes) {
+ Class<? extends Mob> bukkitClass = MobGoalHelper.toBukkitClass((Class<? extends net.minecraft.world.entity.Mob>) nmsClass);
+ if (bukkitClass == null) {
+ shouldFail = true;
+ System.out.println("Missing bukkitMap.put(" + nmsClass.getSimpleName() + ".class, " + nmsClass.getSimpleName().replace("Entity", "") + ".class);");
+ }
+ }
+
+ if (shouldFail) Assert.fail("See above");
+ }
+}
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