Entities

import net.minestom.server.entity.Entity;
import net.minestom.server.entity.EntityType;
import net.minestom.server.coordinate.Pos;

// Create a zombie entity
Entity zombie = new Entity(EntityType.ZOMBIE);

// Create a living entity with health
LivingEntity ghast = new LivingEntity(EntityType.HAPPY_GHAST);
ghast.setNoGravity(true);

import net.minestom.server.entity.EntityCreature;
import net.minestom.server.entity.ai.EntityAIGroup;
import net.minestom.server.entity.ai.goal.*;

// Create a creature with AI
EntityCreature creature = new EntityCreature(EntityType.ZOMBIE);

// Add AI goals
EntityAIGroup aiGroup = new EntityAIGroup();
aiGroup.getGoalSelectors().add(new RandomStrollGoal(creature, 15));
aiGroup.getGoalSelectors().add(new MeleeAttackGoal(creature, 1.2, 20, TimeUnit.SERVER_TICK));

creature.addAIGroup(aiGroup);

// Spawn entity in player's instance
Player player = event.getPlayer();
Instance instance = player.getInstance();

// Create and spawn a copper golem
LivingEntity copperGolem = new LivingEntity(EntityType.COPPER_GOLEM);
copperGolem.setNoGravity(true);
copperGolem.setItemInMainHand(ItemStack.of(Material.STICK));

// Set metadata
CopperGolemMeta meta = (CopperGolemMeta) copperGolem.getEntityMeta();
meta.setState(CopperGolemMeta.State.GETTING_ITEM);

// Spawn at position
Pos spawnPos = new Pos(-10, 40, 5, -133, 0);
copperGolem.setInstance(instance, spawnPos);

// Set position
entity.teleport(new Pos(0, 40, 0));

// Set velocity
entity.setVelocity(new Vec(0, 10, 0));

// Disable gravity
entity.setNoGravity(true);

// Enable/disable physics
entity.setHasPhysics(false);

// Set items in hand
entity.setItemInMainHand(ItemStack.of(Material.DIAMOND_SWORD));
entity.setItemInOffHand(ItemStack.of(Material.SHIELD));

// Set armor
LivingEntity living = (LivingEntity) entity;
living.setHelmet(ItemStack.of(Material.DIAMOND_HELMET));
living.setChestplate(ItemStack.of(Material.DIAMOND_CHESTPLATE));
living.setLeggings(ItemStack.of(Material.DIAMOND_LEGGINGS));
living.setBoots(ItemStack.of(Material.DIAMOND_BOOTS));

// Set body equipment
living.setBodyEquipment(ItemStack.of(Material.GREEN_HARNESS));

import net.minestom.server.component.DataComponents;

// Set custom name
entity.set(DataComponents.CUSTOM_NAME, Component.text("Boss Entity"));

// Access entity-specific metadata
EntityMeta meta = entity.getEntityMeta();
if (meta instanceof LivingEntityMeta livingMeta) {
    livingMeta.setCustomNameVisible(true);
}

EntityCreature creature = new EntityCreature(EntityType.ZOMBIE);

// Set target entity
creature.setTarget(player);

// Get current target
Entity target = creature.getTarget();

import net.minestom.server.event.entity.EntityAttackEvent;

// Listen for attacks
eventNode.addListener(EntityAttackEvent.class, event -> {
    Entity source = event.getEntity();
    Entity target = event.getTarget();
    
    // Apply knockback
    float yaw = source.getPosition().yaw();
    target.takeKnockback(0.4f, 
        Math.sin(yaw * 0.017453292), 
        -Math.cos(yaw * 0.017453292));
    
    // Deal damage
    if (target instanceof Player player) {
        player.damage(Damage.fromEntity(source, 5));
    }
});

// Creature attack method
creature.attack(targetEntity, true); // true = swing hand

EntityCreature creature = new EntityCreature(EntityType.ZOMBIE);

// Create AI group
EntityAIGroup aiGroup = new EntityAIGroup();

// Add goals (executed in order of priority)
aiGroup.getGoalSelectors().add(new MeleeAttackGoal(creature, 1.2, 20, TimeUnit.SERVER_TICK));
aiGroup.getGoalSelectors().add(new RandomStrollGoal(creature, 15));

creature.addAIGroup(aiGroup);

import net.minestom.server.entity.pathfinding.Navigator;

EntityCreature creature = new EntityCreature(EntityType.ZOMBIE);
Navigator navigator = creature.getNavigator();

// Navigate to position
navigator.setPathTo(new Pos(100, 40, 100));

// Navigate to entity
navigator.setPathTo(targetEntity);

// Remove entity immediately
entity.remove();

// Check if removed
if (entity.isRemoved()) {
    System.out.println("Entity has been removed");
}

import java.time.Duration;
import net.minestom.server.utils.time.TimeUnit;

// Schedule removal after delay
entity.scheduleRemove(Duration.of(5, TimeUnit.SECOND));

@Override
public void kill() {
    super.kill();
    
    // Wait for death animation (1000ms minimum for particles)
    if (removalAnimationDelay > 0) {
        scheduleRemove(Duration.of(removalAnimationDelay, TimeUnit.MILLISECOND));
    } else {
        remove();
    }
}

import net.minestom.server.entity.EntityCreature;
import net.minestom.server.entity.EntityType;
import net.minestom.server.entity.ai.EntityAIGroup;
import net.minestom.server.entity.ai.goal.*;
import net.minestom.server.coordinate.Pos;
import net.minestom.server.instance.Instance;
import net.minestom.server.item.ItemStack;
import net.minestom.server.item.Material;
import net.minestom.server.component.DataComponents;
import net.kyori.adventure.text.Component;

public class CustomEntity {
    
    public static EntityCreature spawnGuard(Instance instance, Pos position) {
        // Create creature
        EntityCreature guard = new EntityCreature(EntityType.ZOMBIE);
        
        // Configure properties
        guard.set(DataComponents.CUSTOM_NAME, Component.text("Guard"));
        guard.setItemInMainHand(ItemStack.of(Material.IRON_SWORD));
        guard.setHelmet(ItemStack.of(Material.IRON_HELMET));
        
        // Add AI
        EntityAIGroup aiGroup = new EntityAIGroup();
        aiGroup.getGoalSelectors().add(
            new MeleeAttackGoal(guard, 1.5, 10, TimeUnit.SERVER_TICK)
        );
        aiGroup.getGoalSelectors().add(
            new RandomStrollGoal(guard, 20)
        );
        guard.addAIGroup(aiGroup);
        
        // Spawn in world
        guard.setInstance(instance, position);
        
        return guard;
    }
}