1

Hello there,

I wanted to make a 2d top down game where if you press left mouse button 1, then you will shoot a bullet.
the problem is that the bullet is spawned in the middle of the player and it does not even fly in a direction.
Here is my player script :

       using UnityEngine;
       using System.Collections;

      public class PlayerMovement2 : MonoBehaviour {
Rigidbody2D PlayerBody;
Animator Animi;

// Use this for initialization
void Start () {
    PlayerBody = GetComponent<Rigidbody2D>();
    Animi = GetComponent<Animator>();

}

// Update is called once per frame
void Update () {
    
    Vector2 movement_vector = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));

    if (movement_vector != Vector2.zero)
    {
        Animi.SetBool("Walking", true);
        Animi.SetFloat("Input_x", movement_vector.x);
        Animi.SetFloat("Input_y", movement_vector.y);
    }
    else
    {
        Animi.SetBool("Walking", false);
    }
    PlayerBody.MovePosition(PlayerBody.position + movement_vector * Time.deltaTime);
}

}

and here is my bullet script :

                  using UnityEngine;
                  using System.Collections;
                  public class BulletPrototype1 : MonoBehaviour
                 {
                   public float maxSpeed = 25f;
                  public Rigidbody2D bullet;
                   void Update()
                {
                   if (Input.GetButtonDown("Fire1"))
                 {
                         Rigidbody2D bulletInstance = Instantiate(bullet, transform.position,                         Quaternion.Euler(new Vector3(0, 0, 1))) as Rigidbody2D;

        bulletInstance.velocity = transform.forward * maxSpeed;

    }
}

}

I really do not see the problem. Can someone explain the problem to me, and maybe give an example about how it should be done?
I am thinking it is something with the variable and the transform.forward, but i can be wrong about that.

Thank you in advance,
Daniel.

3

Here is a script that spawns and fires a bullet. I used it for my 2D top down space shooter game i’m making.

using UnityEngine;
using System.Collections;

public class ProjectileSpawn : MonoBehaviour
{
public GameObject Projectile;
private GameObject cloneProj;
public float fireSpeed;
public float fireRate;
public Transform Player;
public float speed;
public Vector3 target;
public Transform target1;

void Start ()
{
    target = target1.transform.position;
    
     
    transform.rotation = Player.transform.rotation;
}


void Update ()
{
   
    transform.rotation = Player.transform.rotation;
    if (Input.GetKey(KeyCode.Mouse0) && Time.time > fireRate)
    {
        fireRate = Time.time + fireSpeed;
        cloneProj = (GameObject)Instantiate(Projectile, transform.position, transform.rotation);
        target = target1.transform.position;
        
        
    }

    var delta = speed * Time.deltaTime;
    cloneProj.transform.position = Vector3.MoveTowards(cloneProj.transform.position, target, delta);
    if (cloneProj.transform.position == target)
    {
        Destroy(cloneProj.gameObject);
    }

}

}

2

@Daniel_Zabojca

There is a problem with collision.
Try to ignore collision between player and bullet.
You should use this:

if (Input.GetButtonDown("Fire1"))
{
   Rigidbody2D bulletInstance = Instantiate(bullet, transform.position, Quaternion.Euler(new Vector3(0, 0, 1))) as Rigidbody2D;
    bulletInstance.velocity = transform.forward * maxSpeed;

    Physics2D.IgnoreCollision(bulletInstance.GetComponent<Collider2D>(),  GetComponent<Collider2D>());
}

Also you can set the rotation when instantiating to current player rotation. (Quaternion.Euler(new Vector3(0, 0, 1)) to transform.rotation, or just zeroe’ this with: Quaternion.identity)