I can't get an object moving towards the player (C#)

Questions & Answers
1

Hello. I’m coding a top-down shooter (more specifically I’m expanding the Space Shooter tutorial) and I’m trying to make a bullet that is pointed to the player’s position at the time of shooting. My problem is that I can instantiate the bullet but I cannot get it to move towards the player. It doesn’t even point towards him. This is my code:

using UnityEngine;
using System.Collections;

// Este script es provisional (12-7-2015 22:56)

public class BasicEnemyController : MonoBehaviour {
	
	public float speed;
	public float alienHp;
	public float bulletSpeed;
	public GameObject bullet;

	float fireTimer;
	Vector3 target;
	GameObject player;
	Transform targetTransform;
	float nextFire;
	
	void Start () 
	{
		fireTimer = 0.0f;
		GetComponent<Rigidbody> ().velocity = transform.forward * speed;
	}

	void Update ()
	{
		fireTimer -= 1;
		if (fireTimer <= 0.0f) 
		{
			Attack ();
		}
	}

	void Attack ()
	{
		float step = bulletSpeed * Time.deltaTime;
		player = GameObject.FindGameObjectWithTag ("Player");
		target = new Vector3 (player.GetComponent<Rigidbody>().position.x, player.GetComponent<Rigidbody>().position.y, player.GetComponent<Rigidbody>().position.z);
		var rotate = Quaternion.LookRotation(player.transform.position - transform.position);
		transform.rotation = Quaternion.Slerp(transform.rotation, rotate, step); 
		transform.Translate (0, 0, step);

		fireTimer = 180;
		Instantiate(bullet, transform.position, transform.rotation);
		bullet.GetComponent<Rigidbody>().velocity = transform.forward * bulletSpeed;
	}

}

I know the code is a bit messy, I’ve been hacking through it all the day trying to get it working. Sorry for the inconvenience.

2

you didn’t provide a reference to the bullet object:

Instantiate(bullet, transform.position, transform.rotation);
bullet.GetComponent().velocity = transform.forward * bulletSpeed;

should be

bullet = Instantiate(bullet, transform.position, transform.rotation);
bullet.GetComponent().velocity = transform.forward * bulletSpeed;

3

I think the easiest way would be to use the lookAt function for pointing at the player:

transform.LookAt(Vector3.forward,new Vector3(-direction.y,direction.x,0f));

(see this for more details)

See the doc about Object.Instantiate to see how to move a projectile with initial velocity

Lastly, you seem a bit lost in your own code. I see here for example that you are in the BasicEnemyController class, handling bullet behavior. Don’t hesitate to separate different functionalities (bullet behavior and enemy behavior for example). It should help you clear your head. I would suggest redoing the space shooter tutorial again as well.