Question by princesszhen · Jan 14, 2020 at 12:34 AM · collider2d monodevelop monobehaviour namespace

,namespace cannot be found,Monodevelop issues, namespace cannot be found

I have no idea what's wrong. I keep experiencing this issues, I'm a newbbie please help thank you.

using UnityEngine.SceneManagement;

public class ShipScript : MonoBehaviour {

 public float speed;
 public GameObject laserPrefab;
 public AudioClip explodeSound;
 public AudioSource a_s;

 public void Explosion() {
     a_s.PlayOneShot(explodeSound);
 }
 // Use this for initialization
 void Start () {

 }

 // Update is called once per frame
 void Update ()
 {

     //If the left key is pressed, move the spaceship left
     if (Input.GetKey ("left")) {
         transform.Translate (new Vector3 (-speed, 0, 0) * Time.deltaTime, Space.World);
     }
     //If the right key is pressed, move the spaceship right
     if (Input.GetKey ("right")) {
         transform.Translate (new Vector3 (speed, 0, 0) * Time.deltaTime, Space.World);
     }
     //If the up key is pressed, move the spaceship up
     if (Input.GetKey ("up")) {
         transform.Translate (new Vector3 (0, speed, 0) * Time.deltaTime, Space.World);
     }
     //If the down key is pressed, move the spaceship down
     if (Input.GetKey ("down")) {
         transform.Translate (new Vector3 (0, -speed, 0) * Time.deltaTime, Space.World);
     }
     //If spacebar or left mouse button is pressed, have the spaceship fire a laser
     if (Input.GetKeyDown ("space")) {
         Instantiate (laserPrefab, transform.position, transfrom.rotation);
         //GameObject laser1 = Instantiate (laserPrefab, transform.position, transform.rotation);
         //GameObject laser2 = Instantiate (laserPrefab, transform.position, transform.rotation);
         //GameObject laser3 = Instantiate (laserPrefab, transform.position, transform.rotation);

         //public laser1 Instantiate (0, 0, 0);
         //public laser2 Instantiate (0, 0, 15f);
         //public laser3 Instantiate (0, 0, -15f);
     }

     if (Input.GetMouseButtonDown (0)) {
         Instantiate (laserPrefab, transform.position, transform.rotation);
     }
 }

 //Add the appropriate function here so that when the spaceship collides when another object, if that object is an alien or bomb(enemyshot),
 //go to the game over scene
 void OnTriggerEnter2D (Collider2D other) {
     Animtor anim = this.GetComponent<Animator> ();//get the ship animator component
     if (other.CompareTag ("enemy") || other.CompareTag ("enemyshot")) {
         playExplode ();
         anim.Play ("ship_die");
     }
 }

 void shipDead() {
     SceneManager.LoadScene("game_over");
 }

}

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