Code/net/minecraft/world/entity/monster/warden/WardenAi.java

package net.minecraft.world.entity.monster.warden;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.mojang.datafixers.util.Pair;
import com.mojang.serialization.Dynamic;
import java.util.List;
import net.minecraft.core.BlockPos;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.util.Mth;
import net.minecraft.util.Unit;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.ai.Brain;
import net.minecraft.world.entity.ai.attributes.Attributes;
import net.minecraft.world.entity.ai.behavior.BehaviorControl;
import net.minecraft.world.entity.ai.behavior.BlockPosTracker;
import net.minecraft.world.entity.ai.behavior.DoNothing;
import net.minecraft.world.entity.ai.behavior.GoToTargetLocation;
import net.minecraft.world.entity.ai.behavior.LookAtTargetSink;
import net.minecraft.world.entity.ai.behavior.MeleeAttack;
import net.minecraft.world.entity.ai.behavior.MoveToTargetSink;
import net.minecraft.world.entity.ai.behavior.RandomStroll;
import net.minecraft.world.entity.ai.behavior.RunOne;
import net.minecraft.world.entity.ai.behavior.SetEntityLookTarget;
import net.minecraft.world.entity.ai.behavior.SetWalkTargetFromAttackTargetIfTargetOutOfReach;
import net.minecraft.world.entity.ai.behavior.StopAttackingIfTargetInvalid;
import net.minecraft.world.entity.ai.behavior.Swim;
import net.minecraft.world.entity.ai.behavior.declarative.BehaviorBuilder;
import net.minecraft.world.entity.ai.behavior.declarative.MemoryAccessor;
import net.minecraft.world.entity.ai.behavior.warden.Digging;
import net.minecraft.world.entity.ai.behavior.warden.Emerging;
import net.minecraft.world.entity.ai.behavior.warden.ForceUnmount;
import net.minecraft.world.entity.ai.behavior.warden.Roar;
import net.minecraft.world.entity.ai.behavior.warden.SetRoarTarget;
import net.minecraft.world.entity.ai.behavior.warden.SetWardenLookTarget;
import net.minecraft.world.entity.ai.behavior.warden.Sniffing;
import net.minecraft.world.entity.ai.behavior.warden.SonicBoom;
import net.minecraft.world.entity.ai.behavior.warden.TryToSniff;
import net.minecraft.world.entity.ai.memory.MemoryModuleType;
import net.minecraft.world.entity.ai.memory.MemoryStatus;
import net.minecraft.world.entity.ai.sensing.Sensor;
import net.minecraft.world.entity.ai.sensing.SensorType;
import net.minecraft.world.entity.schedule.Activity;

public class WardenAi {
    private static final float SPEED_MULTIPLIER_WHEN_IDLING = 0.5F;
    private static final float SPEED_MULTIPLIER_WHEN_INVESTIGATING = 0.7F;
    private static final float SPEED_MULTIPLIER_WHEN_FIGHTING = 1.2F;
    private static final int MELEE_ATTACK_COOLDOWN = 18;
    private static final int DIGGING_DURATION = Mth.ceil(100.0F);
    public static final int EMERGE_DURATION = Mth.ceil(133.59999F);
    public static final int ROAR_DURATION = Mth.ceil(84.0F);
    private static final int SNIFFING_DURATION = Mth.ceil(83.2F);
    public static final int DIGGING_COOLDOWN = 1200;
    private static final int DISTURBANCE_LOCATION_EXPIRY_TIME = 100;
    private static final List<SensorType<? extends Sensor<? super Warden>>> SENSOR_TYPES = List.of(SensorType.NEAREST_PLAYERS, SensorType.WARDEN_ENTITY_SENSOR);
    private static final List<MemoryModuleType<?>> MEMORY_TYPES = List.of(
        MemoryModuleType.NEAREST_LIVING_ENTITIES,
        MemoryModuleType.NEAREST_VISIBLE_LIVING_ENTITIES,
        MemoryModuleType.NEAREST_VISIBLE_PLAYER,
        MemoryModuleType.NEAREST_VISIBLE_ATTACKABLE_PLAYER,
        MemoryModuleType.NEAREST_VISIBLE_NEMESIS,
        MemoryModuleType.LOOK_TARGET,
        MemoryModuleType.WALK_TARGET,
        MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE,
        MemoryModuleType.PATH,
        MemoryModuleType.ATTACK_TARGET,
        MemoryModuleType.ATTACK_COOLING_DOWN,
        MemoryModuleType.NEAREST_ATTACKABLE,
        MemoryModuleType.ROAR_TARGET,
        MemoryModuleType.DISTURBANCE_LOCATION,
        MemoryModuleType.RECENT_PROJECTILE,
        MemoryModuleType.IS_SNIFFING,
        MemoryModuleType.IS_EMERGING,
        MemoryModuleType.ROAR_SOUND_DELAY,
        MemoryModuleType.DIG_COOLDOWN,
        MemoryModuleType.ROAR_SOUND_COOLDOWN,
        MemoryModuleType.SNIFF_COOLDOWN,
        MemoryModuleType.TOUCH_COOLDOWN,
        MemoryModuleType.VIBRATION_COOLDOWN,
        MemoryModuleType.SONIC_BOOM_COOLDOWN,
        MemoryModuleType.SONIC_BOOM_SOUND_COOLDOWN,
        MemoryModuleType.SONIC_BOOM_SOUND_DELAY
    );
    private static final BehaviorControl<Warden> DIG_COOLDOWN_SETTER = BehaviorBuilder.create(
        p_258953_ -> p_258953_.group(p_258953_.registered(MemoryModuleType.DIG_COOLDOWN)).apply(p_258953_, p_258960_ -> (p_258956_, p_258957_, p_258958_) -> {
            if (p_258953_.tryGet(p_258960_).isPresent()) {
                p_258960_.setWithExpiry(Unit.INSTANCE, 1200L);
            }

            return true;
        })
    );

    public static void updateActivity(Warden p_219513_) {
        p_219513_.getBrain()
            .setActiveActivityToFirstValid(
                ImmutableList.of(
                    Activity.EMERGE, Activity.DIG, Activity.ROAR, Activity.FIGHT, Activity.INVESTIGATE, Activity.SNIFF, Activity.IDLE
                )
            );
    }

    protected static Brain<?> makeBrain(Warden p_219521_, Dynamic<?> p_219522_) {
        Brain.Provider<Warden> provider = Brain.provider(MEMORY_TYPES, SENSOR_TYPES);
        Brain<Warden> brain = provider.makeBrain(p_219522_);
        initCoreActivity(brain);
        initEmergeActivity(brain);
        initDiggingActivity(brain);
        initIdleActivity(brain);
        initRoarActivity(brain);
        initFightActivity(p_219521_, brain);
        initInvestigateActivity(brain);
        initSniffingActivity(brain);
        brain.setCoreActivities(ImmutableSet.of(Activity.CORE));
        brain.setDefaultActivity(Activity.IDLE);
        brain.useDefaultActivity();
        return brain;
    }

    private static void initCoreActivity(Brain<Warden> p_219511_) {
        p_219511_.addActivity(
            Activity.CORE, 0, ImmutableList.of(new Swim<>(0.8F), SetWardenLookTarget.create(), new LookAtTargetSink(45, 90), new MoveToTargetSink())
        );
    }

    private static void initEmergeActivity(Brain<Warden> p_219527_) {
        p_219527_.addActivityAndRemoveMemoryWhenStopped(Activity.EMERGE, 5, ImmutableList.of(new Emerging<>(EMERGE_DURATION)), MemoryModuleType.IS_EMERGING);
    }

    private static void initDiggingActivity(Brain<Warden> p_219532_) {
        p_219532_.addActivityWithConditions(
            Activity.DIG,
            ImmutableList.of(Pair.of(0, new ForceUnmount()), Pair.of(1, new Digging<>(DIGGING_DURATION))),
            ImmutableSet.of(Pair.of(MemoryModuleType.ROAR_TARGET, MemoryStatus.VALUE_ABSENT), Pair.of(MemoryModuleType.DIG_COOLDOWN, MemoryStatus.VALUE_ABSENT))
        );
    }

    private static void initIdleActivity(Brain<Warden> p_219537_) {
        p_219537_.addActivity(
            Activity.IDLE,
            10,
            ImmutableList.of(
                SetRoarTarget.create(Warden::getEntityAngryAt),
                TryToSniff.create(),
                new RunOne<>(
                    ImmutableMap.of(MemoryModuleType.IS_SNIFFING, MemoryStatus.VALUE_ABSENT),
                    ImmutableList.of(Pair.of(RandomStroll.stroll(0.5F), 2), Pair.of(new DoNothing(30, 60), 1))
                )
            )
        );
    }

    private static void initInvestigateActivity(Brain<Warden> p_219542_) {
        p_219542_.addActivityAndRemoveMemoryWhenStopped(
            Activity.INVESTIGATE,
            5,
            ImmutableList.of(SetRoarTarget.create(Warden::getEntityAngryAt), GoToTargetLocation.create(MemoryModuleType.DISTURBANCE_LOCATION, 2, 0.7F)),
            MemoryModuleType.DISTURBANCE_LOCATION
        );
    }

    private static void initSniffingActivity(Brain<Warden> p_219544_) {
        p_219544_.addActivityAndRemoveMemoryWhenStopped(
            Activity.SNIFF, 5, ImmutableList.of(SetRoarTarget.create(Warden::getEntityAngryAt), new Sniffing<>(SNIFFING_DURATION)), MemoryModuleType.IS_SNIFFING
        );
    }

    private static void initRoarActivity(Brain<Warden> p_219546_) {
        p_219546_.addActivityAndRemoveMemoryWhenStopped(Activity.ROAR, 10, ImmutableList.of(new Roar()), MemoryModuleType.ROAR_TARGET);
    }

    private static void initFightActivity(Warden p_219518_, Brain<Warden> p_219519_) {
        p_219519_.addActivityAndRemoveMemoryWhenStopped(
            Activity.FIGHT,
            10,
            ImmutableList.of(
                DIG_COOLDOWN_SETTER,
                StopAttackingIfTargetInvalid.<Warden>create(
                    (p_363002_, p_219540_) -> !p_219518_.getAngerLevel().isAngry() || !p_219518_.canTargetEntity(p_219540_), WardenAi::onTargetInvalid, false
                ),
                SetEntityLookTarget.create(p_219535_ -> isTarget(p_219518_, p_219535_), (float)p_219518_.getAttributeValue(Attributes.FOLLOW_RANGE)),
                SetWalkTargetFromAttackTargetIfTargetOutOfReach.create(1.2F),
                new SonicBoom(),
                MeleeAttack.create(18)
            ),
            MemoryModuleType.ATTACK_TARGET
        );
    }

    private static boolean isTarget(Warden p_219515_, LivingEntity p_219516_) {
        return p_219515_.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET).filter(p_219509_ -> p_219509_ == p_219516_).isPresent();
    }

    private static void onTargetInvalid(ServerLevel p_363022_, Warden p_219529_, LivingEntity p_219530_) {
        if (!p_219529_.canTargetEntity(p_219530_)) {
            p_219529_.clearAnger(p_219530_);
        }

        setDigCooldown(p_219529_);
    }

    public static void setDigCooldown(LivingEntity p_219506_) {
        if (p_219506_.getBrain().hasMemoryValue(MemoryModuleType.DIG_COOLDOWN)) {
            p_219506_.getBrain().setMemoryWithExpiry(MemoryModuleType.DIG_COOLDOWN, Unit.INSTANCE, 1200L);
        }
    }

    public static void setDisturbanceLocation(Warden p_219524_, BlockPos p_219525_) {
        if (p_219524_.level().getWorldBorder().isWithinBounds(p_219525_)
            && !p_219524_.getEntityAngryAt().isPresent()
            && !p_219524_.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET).isPresent()) {
            setDigCooldown(p_219524_);
            p_219524_.getBrain().setMemoryWithExpiry(MemoryModuleType.SNIFF_COOLDOWN, Unit.INSTANCE, 100L);
            p_219524_.getBrain().setMemoryWithExpiry(MemoryModuleType.LOOK_TARGET, new BlockPosTracker(p_219525_), 100L);
            p_219524_.getBrain().setMemoryWithExpiry(MemoryModuleType.DISTURBANCE_LOCATION, p_219525_, 100L);
            p_219524_.getBrain().eraseMemory(MemoryModuleType.WALK_TARGET);
        }
    }
}