How can i change the player controls in Space Shooter to Touch.

Hi there,

I've just been through the Space Shooter sample myself and wanted to do the same thing. This is what I ended up with as my FixedUpdate() function. I wanted it to work with mouse or touch so it worked in the game view too. I basically set a target position whenever the user touches, and set the velocity to move towards the target. I've also exposed a public dampingRadius so the ship can slow down as it reaches its target.

using UnityEngine; using System.Collections;

[System.Serializable] public class Boundary { public float xMin, xMax, zMin, zMax; }

public class PlayerController : MonoBehaviour {

  public Boundary boundary;
  public float dampingRadius;
  public float fireDelay;
  public GameObject shot;
  public Transform shotSpawn;
  public float speed;
  public float tilt;
  public float velocityLag;
 
  private Vector3 target;
  private float nextFire;
 
 
  void Start () {
  }
 
  void Update() {
      bool triggered = false;
      if (Input.mousePresent && Input.GetMouseButton(0))
      {
          triggered = true;
      }
      else if (Input.touchCount > 0)
      {
          triggered = true;
      }
 
      if (triggered && (Time.time > nextFire))
      {
          nextFire = Time.time + fireDelay;
          Instantiate(shot, shotSpawn.position, Quaternion.identity);
          audio.Play();
      }
  }
 
  void FixedUpdate ()
  {
      Vector3? touchPos = null;
      if (Input.mousePresent && Input.GetMouseButton(0))
      {
          touchPos = new Vector3(Input.mousePosition.x, Input.mousePosition.y, 0.0f);
      }
      else if(Input.touchCount > 0)
      {
          touchPos = new Vector3(Input.touches[0].position.x, Input.touches[0].position.y, 0.0f);
      }
      if (touchPos != null)
      { 
          target = Camera.main.ScreenToWorldPoint(touchPos.Value);
          target.y = rigidbody.position.y;
      }
 
      Vector3 offset = target - rigidbody.position;
      
      float magnitude = offset.magnitude;
      if (magnitude > dampingRadius)
          magnitude = dampingRadius;
      float dampening = magnitude / dampingRadius;
 
      Vector3 desiredVelocity = offset.normalized * speed * dampening;
 
      rigidbody.velocity += (desiredVelocity - rigidbody.velocity) * velocityLag;
 
      // Clamp to bounds
      rigidbody.position = new Vector3
      (
          Mathf.Clamp(rigidbody.position.x, boundary.xMin, boundary.xMax),
          0.0f,
          Mathf.Clamp(rigidbody.position.z, boundary.zMin, boundary.zMax)
      );
 
      rigidbody.rotation = Quaternion.Euler(0.0f, 0.0f, rigidbody.velocity.x * -tilt);
  }

}

https://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/space-shooter-to-mobile