Making a mob follow the player

I was wondeirng, is there a simple way to make a mob follow a player? Like a method? Because I cant find anything. Thanks!

 

Yes it easy!
mob.setTarget(player);
passive will follow hostile will try to kill lol.

 

tommycake50 Lol. Thanks!

tommycake50 it deosnt work!! The method doesnt exsist.

Code:

Entity mob = player.getWorld().spawnEntity(player.getLocation(), (EntityType)Menu.CHOICES.get(player.getName()));

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

JPG2000
setTarget is broken for most mobs, use Pathfinding(super accurate) or Navigation(just follows)

 

JPG2000 Try this method:

Code:java

/**
    * Forces a living entity to walk to a location with a given velocity
    */
    private void navigate(LivingEntity le, Location loc, double velocity) {
        try {
            Object entityLiving = ReflectionUtil.getMethod("getHandle", le.getClass(), 0).invoke(le);
            Object navigation = ReflectionUtil.getMethod("getNavigation", entityLiving.getClass(), 0).invoke(entityLiving);
            ReflectionUtil.getMethod("a", navigation.getClass(), 4).invoke(navigation, loc.getX(), loc.getY(), loc.getZ(), velocity);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

ReflectionUtil.class:

Code:java

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
 
import org.bukkit.Bukkit;
 
public class ReflectionUtil {
    public static Object getClass(String name, Object... args) throws Exception {
        Class<?> c = Class.forName(ReflectionUtil.getPackageName() + "." + name);
        int params = 0;
        if (args != null) {
            params = args.length;
        }
        for (Constructor<?> co : c.getConstructors()) {
            if (co.getParameterTypes().length == params) {
                return co.newInstance(args);
            }
        }
        return null;
    }
 
    public static Method getMethod(String name, Class<?> c, int params) {
        for (Method m : c.getMethods()) {
            if (m.getName().equals(name) && m.getParameterTypes().length == params) {
                return m;
            }
        }
        return null;
    }
 
    public static void setValue(Object instance, String fieldName, Object value) throws Exception {
        Field field = instance.getClass().getDeclaredField(fieldName);
        field.setAccessible(true);
        field.set(instance, value);
    }
 
    public static String getPackageName() {
        return "net.minecraft.server." + Bukkit.getServer().getClass().getPackage().getName().replace(".", ",").split(",")[3];
    }
}

 

xTrollxDudex Could I have an example?

 

JPG2000
DarkBladde's should work.

 

JPG2000
Since I'm not too good with NMS I'll leave pathfinding
Use navigation:

PHP:

//lets have a field for the entity location called l
Navigation nav = ((EntityInsentient)((CraftEntity) e).getHandle()).getNavigation();
nav.a(l.getX(), l.getY(), l.getZ(), 0.3f);

 

xTrollxDudex It doesnt work, I get loads of erorrs. So are there any other quick and easy ways? Im desperate D: