Code/net/minecraft/world/entity/monster/Zoglin.java

package net.minecraft.world.entity.monster;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.mojang.datafixers.util.Pair;
import com.mojang.serialization.Dynamic;
import java.util.Optional;
import javax.annotation.Nullable;
import net.minecraft.core.BlockPos;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.network.protocol.game.DebugPackets;
import net.minecraft.network.syncher.EntityDataAccessor;
import net.minecraft.network.syncher.EntityDataSerializers;
import net.minecraft.network.syncher.SynchedEntityData;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.util.profiling.Profiler;
import net.minecraft.util.profiling.ProfilerFiller;
import net.minecraft.util.valueproviders.UniformInt;
import net.minecraft.world.DifficultyInstance;
import net.minecraft.world.damagesource.DamageSource;
import net.minecraft.world.entity.Entity;
import net.minecraft.world.entity.EntitySpawnReason;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.SpawnGroupData;
import net.minecraft.world.entity.ai.Brain;
import net.minecraft.world.entity.ai.attributes.AttributeSupplier;
import net.minecraft.world.entity.ai.attributes.Attributes;
import net.minecraft.world.entity.ai.behavior.BehaviorUtils;
import net.minecraft.world.entity.ai.behavior.DoNothing;
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.SetEntityLookTargetSometimes;
import net.minecraft.world.entity.ai.behavior.SetWalkTargetFromAttackTargetIfTargetOutOfReach;
import net.minecraft.world.entity.ai.behavior.SetWalkTargetFromLookTarget;
import net.minecraft.world.entity.ai.behavior.StartAttacking;
import net.minecraft.world.entity.ai.behavior.StopAttackingIfTargetInvalid;
import net.minecraft.world.entity.ai.behavior.declarative.BehaviorBuilder;
import net.minecraft.world.entity.ai.memory.MemoryModuleType;
import net.minecraft.world.entity.ai.memory.NearestVisibleLivingEntities;
import net.minecraft.world.entity.ai.sensing.Sensor;
import net.minecraft.world.entity.ai.sensing.SensorType;
import net.minecraft.world.entity.monster.hoglin.HoglinBase;
import net.minecraft.world.entity.schedule.Activity;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.ServerLevelAccessor;
import net.minecraft.world.level.block.state.BlockState;

public class Zoglin extends Monster implements HoglinBase {
    private static final EntityDataAccessor<Boolean> DATA_BABY_ID = SynchedEntityData.defineId(Zoglin.class, EntityDataSerializers.BOOLEAN);
    private static final int MAX_HEALTH = 40;
    private static final int ATTACK_KNOCKBACK = 1;
    private static final float KNOCKBACK_RESISTANCE = 0.6F;
    private static final int ATTACK_DAMAGE = 6;
    private static final float BABY_ATTACK_DAMAGE = 0.5F;
    private static final int ATTACK_INTERVAL = 40;
    private static final int BABY_ATTACK_INTERVAL = 15;
    private static final int ATTACK_DURATION = 200;
    private static final float MOVEMENT_SPEED_WHEN_FIGHTING = 0.3F;
    private static final float SPEED_MULTIPLIER_WHEN_IDLING = 0.4F;
    private static final boolean DEFAULT_BABY = false;
    private int attackAnimationRemainingTicks;
    protected static final ImmutableList<? extends SensorType<? extends Sensor<? super Zoglin>>> SENSOR_TYPES = ImmutableList.of(
        SensorType.NEAREST_LIVING_ENTITIES, SensorType.NEAREST_PLAYERS
    );
    protected static final ImmutableList<? extends MemoryModuleType<?>> MEMORY_TYPES = ImmutableList.of(
        MemoryModuleType.NEAREST_LIVING_ENTITIES,
        MemoryModuleType.NEAREST_VISIBLE_LIVING_ENTITIES,
        MemoryModuleType.NEAREST_VISIBLE_PLAYER,
        MemoryModuleType.NEAREST_VISIBLE_ATTACKABLE_PLAYER,
        MemoryModuleType.LOOK_TARGET,
        MemoryModuleType.WALK_TARGET,
        MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE,
        MemoryModuleType.PATH,
        MemoryModuleType.ATTACK_TARGET,
        MemoryModuleType.ATTACK_COOLING_DOWN
    );

    public Zoglin(EntityType<? extends Zoglin> p_34204_, Level p_34205_) {
        super(p_34204_, p_34205_);
        this.xpReward = 5;
    }

    @Override
    protected Brain.Provider<Zoglin> brainProvider() {
        return Brain.provider(MEMORY_TYPES, SENSOR_TYPES);
    }

    @Override
    protected Brain<?> makeBrain(Dynamic<?> p_34221_) {
        Brain<Zoglin> brain = this.brainProvider().makeBrain(p_34221_);
        initCoreActivity(brain);
        initIdleActivity(brain);
        initFightActivity(brain);
        brain.setCoreActivities(ImmutableSet.of(Activity.CORE));
        brain.setDefaultActivity(Activity.IDLE);
        brain.useDefaultActivity();
        return brain;
    }

    private static void initCoreActivity(Brain<Zoglin> p_34217_) {
        p_34217_.addActivity(Activity.CORE, 0, ImmutableList.of(new LookAtTargetSink(45, 90), new MoveToTargetSink()));
    }

    private static void initIdleActivity(Brain<Zoglin> p_34229_) {
        p_34229_.addActivity(
            Activity.IDLE,
            10,
            ImmutableList.of(
                StartAttacking.create((p_364948_, p_368246_) -> p_368246_.findNearestValidAttackTarget(p_364948_)),
                SetEntityLookTargetSometimes.create(8.0F, UniformInt.of(30, 60)),
                new RunOne<>(
                    ImmutableList.of(
                        Pair.of(RandomStroll.stroll(0.4F), 2), Pair.of(SetWalkTargetFromLookTarget.create(0.4F, 3), 2), Pair.of(new DoNothing(30, 60), 1)
                    )
                )
            )
        );
    }

    private static void initFightActivity(Brain<Zoglin> p_34237_) {
        p_34237_.addActivityAndRemoveMemoryWhenStopped(
            Activity.FIGHT,
            10,
            ImmutableList.of(
                SetWalkTargetFromAttackTargetIfTargetOutOfReach.create(1.0F),
                BehaviorBuilder.triggerIf(Zoglin::isAdult, MeleeAttack.create(40)),
                BehaviorBuilder.triggerIf(Zoglin::isBaby, MeleeAttack.create(15)),
                StopAttackingIfTargetInvalid.create()
            ),
            MemoryModuleType.ATTACK_TARGET
        );
    }

    private Optional<? extends LivingEntity> findNearestValidAttackTarget(ServerLevel p_363321_) {
        return this.getBrain()
            .getMemory(MemoryModuleType.NEAREST_VISIBLE_LIVING_ENTITIES)
            .orElse(NearestVisibleLivingEntities.empty())
            .findClosest(p_365722_ -> this.isTargetable(p_363321_, p_365722_));
    }

    private boolean isTargetable(ServerLevel p_362768_, LivingEntity p_34253_) {
        EntityType<?> entitytype = p_34253_.getType();
        return entitytype != EntityType.ZOGLIN && entitytype != EntityType.CREEPER && Sensor.isEntityAttackable(p_362768_, this, p_34253_);
    }

    @Override
    protected void defineSynchedData(SynchedEntityData.Builder p_332153_) {
        super.defineSynchedData(p_332153_);
        p_332153_.define(DATA_BABY_ID, false);
    }

    @Override
    public void onSyncedDataUpdated(EntityDataAccessor<?> p_34225_) {
        super.onSyncedDataUpdated(p_34225_);
        if (DATA_BABY_ID.equals(p_34225_)) {
            this.refreshDimensions();
        }
    }

    @Nullable
    @Override
    public SpawnGroupData finalizeSpawn(ServerLevelAccessor p_370134_, DifficultyInstance p_367985_, EntitySpawnReason p_369650_, @Nullable SpawnGroupData p_362880_) {
        if (p_370134_.getRandom().nextFloat() < 0.2F) {
            this.setBaby(true);
        }

        return super.finalizeSpawn(p_370134_, p_367985_, p_369650_, p_362880_);
    }

    public static AttributeSupplier.Builder createAttributes() {
        return Monster.createMonsterAttributes()
            .add(Attributes.MAX_HEALTH, 40.0)
            .add(Attributes.MOVEMENT_SPEED, 0.3F)
            .add(Attributes.KNOCKBACK_RESISTANCE, 0.6F)
            .add(Attributes.ATTACK_KNOCKBACK, 1.0)
            .add(Attributes.ATTACK_DAMAGE, 6.0);
    }

    public boolean isAdult() {
        return !this.isBaby();
    }

    @Override
    public boolean doHurtTarget(ServerLevel p_366973_, Entity p_34207_) {
        if (p_34207_ instanceof LivingEntity livingentity) {
            this.attackAnimationRemainingTicks = 10;
            p_366973_.broadcastEntityEvent(this, (byte)4);
            this.makeSound(SoundEvents.ZOGLIN_ATTACK);
            return HoglinBase.hurtAndThrowTarget(p_366973_, this, livingentity);
        } else {
            return false;
        }
    }

    @Override
    public boolean canBeLeashed() {
        return true;
    }

    @Override
    protected void blockedByItem(LivingEntity p_34246_) {
        if (!this.isBaby()) {
            HoglinBase.throwTarget(this, p_34246_);
        }
    }

    @Override
    public boolean hurtServer(ServerLevel p_369200_, DamageSource p_368778_, float p_370202_) {
        boolean flag = super.hurtServer(p_369200_, p_368778_, p_370202_);
        if (flag && p_368778_.getEntity() instanceof LivingEntity livingentity) {
            if (this.canAttack(livingentity) && !BehaviorUtils.isOtherTargetMuchFurtherAwayThanCurrentAttackTarget(this, livingentity, 4.0)) {
                this.setAttackTarget(livingentity);
            }

            return true;
        } else {
            return flag;
        }
    }

    private void setAttackTarget(LivingEntity p_34255_) {
        this.brain.eraseMemory(MemoryModuleType.CANT_REACH_WALK_TARGET_SINCE);
        this.brain.setMemoryWithExpiry(MemoryModuleType.ATTACK_TARGET, p_34255_, 200L);
    }

    @Override
    public Brain<Zoglin> getBrain() {
        return (Brain<Zoglin>)super.getBrain();
    }

    protected void updateActivity() {
        Activity activity = this.brain.getActiveNonCoreActivity().orElse(null);
        this.brain.setActiveActivityToFirstValid(ImmutableList.of(Activity.FIGHT, Activity.IDLE));
        Activity activity1 = this.brain.getActiveNonCoreActivity().orElse(null);
        if (activity1 == Activity.FIGHT && activity != Activity.FIGHT) {
            this.playAngrySound();
        }

        this.setAggressive(this.brain.hasMemoryValue(MemoryModuleType.ATTACK_TARGET));
    }

    @Override
    protected void customServerAiStep(ServerLevel p_363122_) {
        ProfilerFiller profilerfiller = Profiler.get();
        profilerfiller.push("zoglinBrain");
        this.getBrain().tick(p_363122_, this);
        profilerfiller.pop();
        this.updateActivity();
    }

    @Override
    public void setBaby(boolean p_34227_) {
        this.getEntityData().set(DATA_BABY_ID, p_34227_);
        if (!this.level().isClientSide && p_34227_) {
            this.getAttribute(Attributes.ATTACK_DAMAGE).setBaseValue(0.5);
        }
    }

    @Override
    public boolean isBaby() {
        return this.getEntityData().get(DATA_BABY_ID);
    }

    @Override
    public void aiStep() {
        if (this.attackAnimationRemainingTicks > 0) {
            this.attackAnimationRemainingTicks--;
        }

        super.aiStep();
    }

    @Override
    public void handleEntityEvent(byte p_34212_) {
        if (p_34212_ == 4) {
            this.attackAnimationRemainingTicks = 10;
            this.makeSound(SoundEvents.ZOGLIN_ATTACK);
        } else {
            super.handleEntityEvent(p_34212_);
        }
    }

    @Override
    public int getAttackAnimationRemainingTicks() {
        return this.attackAnimationRemainingTicks;
    }

    @Override
    protected SoundEvent getAmbientSound() {
        if (this.level().isClientSide) {
            return null;
        } else {
            return this.brain.hasMemoryValue(MemoryModuleType.ATTACK_TARGET) ? SoundEvents.ZOGLIN_ANGRY : SoundEvents.ZOGLIN_AMBIENT;
        }
    }

    @Override
    protected SoundEvent getHurtSound(DamageSource p_34244_) {
        return SoundEvents.ZOGLIN_HURT;
    }

    @Override
    protected SoundEvent getDeathSound() {
        return SoundEvents.ZOGLIN_DEATH;
    }

    @Override
    protected void playStepSound(BlockPos p_34231_, BlockState p_34232_) {
        this.playSound(SoundEvents.ZOGLIN_STEP, 0.15F, 1.0F);
    }

    protected void playAngrySound() {
        this.makeSound(SoundEvents.ZOGLIN_ANGRY);
    }

    @Nullable
    @Override
    public LivingEntity getTarget() {
        return this.getTargetFromBrain();
    }

    @Override
    protected void sendDebugPackets() {
        super.sendDebugPackets();
        DebugPackets.sendEntityBrain(this);
    }

    @Override
    public void addAdditionalSaveData(CompoundTag p_34234_) {
        super.addAdditionalSaveData(p_34234_);
        p_34234_.putBoolean("IsBaby", this.isBaby());
    }

    @Override
    public void readAdditionalSaveData(CompoundTag p_34223_) {
        super.readAdditionalSaveData(p_34223_);
        this.setBaby(p_34223_.getBooleanOr("IsBaby", false));
    }
}