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

package net.minecraft.world.entity.monster;

import net.minecraft.core.BlockPos;
import net.minecraft.core.particles.ParticleTypes;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.sounds.SoundEvent;
import net.minecraft.sounds.SoundEvents;
import net.minecraft.util.RandomSource;
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.ai.attributes.AttributeSupplier;
import net.minecraft.world.entity.ai.attributes.Attributes;
import net.minecraft.world.entity.ai.goal.ClimbOnTopOfPowderSnowGoal;
import net.minecraft.world.entity.ai.goal.FloatGoal;
import net.minecraft.world.entity.ai.goal.LookAtPlayerGoal;
import net.minecraft.world.entity.ai.goal.MeleeAttackGoal;
import net.minecraft.world.entity.ai.goal.RandomLookAroundGoal;
import net.minecraft.world.entity.ai.goal.WaterAvoidingRandomStrollGoal;
import net.minecraft.world.entity.ai.goal.target.HurtByTargetGoal;
import net.minecraft.world.entity.ai.goal.target.NearestAttackableTargetGoal;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.LevelAccessor;
import net.minecraft.world.level.block.state.BlockState;

public class Endermite extends Monster {
    private static final int MAX_LIFE = 2400;
    private static final int DEFAULT_LIFE = 0;
    private int life = 0;

    public Endermite(EntityType<? extends Endermite> p_32591_, Level p_32592_) {
        super(p_32591_, p_32592_);
        this.xpReward = 3;
    }

    @Override
    protected void registerGoals() {
        this.goalSelector.addGoal(1, new FloatGoal(this));
        this.goalSelector.addGoal(1, new ClimbOnTopOfPowderSnowGoal(this, this.level()));
        this.goalSelector.addGoal(2, new MeleeAttackGoal(this, 1.0, false));
        this.goalSelector.addGoal(3, new WaterAvoidingRandomStrollGoal(this, 1.0));
        this.goalSelector.addGoal(7, new LookAtPlayerGoal(this, Player.class, 8.0F));
        this.goalSelector.addGoal(8, new RandomLookAroundGoal(this));
        this.targetSelector.addGoal(1, new HurtByTargetGoal(this).setAlertOthers());
        this.targetSelector.addGoal(2, new NearestAttackableTargetGoal<>(this, Player.class, true));
    }

    public static AttributeSupplier.Builder createAttributes() {
        return Monster.createMonsterAttributes().add(Attributes.MAX_HEALTH, 8.0).add(Attributes.MOVEMENT_SPEED, 0.25).add(Attributes.ATTACK_DAMAGE, 2.0);
    }

    @Override
    protected Entity.MovementEmission getMovementEmission() {
        return Entity.MovementEmission.EVENTS;
    }

    @Override
    protected SoundEvent getAmbientSound() {
        return SoundEvents.ENDERMITE_AMBIENT;
    }

    @Override
    protected SoundEvent getHurtSound(DamageSource p_32615_) {
        return SoundEvents.ENDERMITE_HURT;
    }

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

    @Override
    protected void playStepSound(BlockPos p_32607_, BlockState p_32608_) {
        this.playSound(SoundEvents.ENDERMITE_STEP, 0.15F, 1.0F);
    }

    @Override
    public void readAdditionalSaveData(CompoundTag p_32595_) {
        super.readAdditionalSaveData(p_32595_);
        this.life = p_32595_.getIntOr("Lifetime", 0);
    }

    @Override
    public void addAdditionalSaveData(CompoundTag p_32610_) {
        super.addAdditionalSaveData(p_32610_);
        p_32610_.putInt("Lifetime", this.life);
    }

    @Override
    public void tick() {
        this.yBodyRot = this.getYRot();
        super.tick();
    }

    @Override
    public void setYBodyRot(float p_32621_) {
        this.setYRot(p_32621_);
        super.setYBodyRot(p_32621_);
    }

    @Override
    public void aiStep() {
        super.aiStep();
        if (this.level().isClientSide) {
            for (int i = 0; i < 2; i++) {
                this.level()
                    .addParticle(
                        ParticleTypes.PORTAL,
                        this.getRandomX(0.5),
                        this.getRandomY(),
                        this.getRandomZ(0.5),
                        (this.random.nextDouble() - 0.5) * 2.0,
                        -this.random.nextDouble(),
                        (this.random.nextDouble() - 0.5) * 2.0
                    );
            }
        } else {
            if (!this.isPersistenceRequired()) {
                this.life++;
            }

            if (this.life >= 2400) {
                this.discard();
            }
        }
    }

    public static boolean checkEndermiteSpawnRules(
        EntityType<Endermite> p_218969_, LevelAccessor p_218970_, EntitySpawnReason p_364641_, BlockPos p_218972_, RandomSource p_218973_
    ) {
        if (!checkAnyLightMonsterSpawnRules(p_218969_, p_218970_, p_364641_, p_218972_, p_218973_)) {
            return false;
        } else if (EntitySpawnReason.isSpawner(p_364641_)) {
            return true;
        } else {
            Player player = p_218970_.getNearestPlayer(p_218972_.getX() + 0.5, p_218972_.getY() + 0.5, p_218972_.getZ() + 0.5, 5.0, true);
            return player == null;
        }
    }
}