hi Teacher and EveryOne
i can’t next level Win Screen
i got problem signal : NullReferenceException: Object reference not set to an instance of an object
PlayerController.Die () (at Assets/Entities/my Player/PlayerController.cs:75)
PlayerController.OnTriggerEnter2D (UnityEngine.Collider2D collider) (at Assets/Entities/my Player/PlayerController.cs:67)
this my source : https://drive.google.com/open?id=1NZeDWXGmDp2g_5ZzHd80BGIgPSRF3yhq
please help me !!!
using UnityEngine;
using System.Collections;`Preformatted text`
public class PlayerController : MonoBehaviour {
public float speed = 20.0f;
public float padding = 1f; // luu y 01
public GameObject projectile;// sau dok loi laser vao no va nhan apply
public float projectileSpeed ;
public float firingRate = 10f;
public float health = 800f;
// Use this for initialization
float xmin ;
float xmax ;
// ma~ cu~ la` float xmin=-5 ; va2 xmax =5;
//giup phi thuyen ra ben ngoai con phan nua hinh`
void Start(){
float distance = transform.position.z - Camera.main.transform.position.z;
Vector3 leftmost = Camera.main.ViewportToWorldPoint (new Vector3 (0, 0, distance));
Vector3 rightmost = Camera.main.ViewportToWorldPoint (new Vector3 (1, 0, distance));
xmin = leftmost.x + padding; // luu y 01
xmax = rightmost.x - padding;// luu y 01
}
// Update is called once per frame
void Fire(){
Vector3 offset = new Vector3 (0, 0.6f, 0);
GameObject beam = Instantiate (projectile, transform.position + offset, Quaternion.identity)as GameObject;
beam.rigidbody2D.velocity = new Vector3(0,projectileSpeed,0);
}
void Update () {
if (Input.GetKeyDown (KeyCode.Space)) {
InvokeRepeating ("Fire", 0.000001f, firingRate);
}
// luu y : chu~ F bat buoc phai viet hoa
if (Input.GetKeyUp (KeyCode.Space)) {
CancelInvoke ("Fire");
}
//dong 27 se lam cho beam laser ban len tren
// nhung phai trong Hierachy click Player> cho 5 trong projectileSpeed cua Inspector
// va` prefab player laser > add rigidbody2D
//}
//line 7 va 8 + line 23 den 25 >>> khi nhan phim Space laser se xuat hien ngay vi tri ship vua dung dok
if (Input.GetKey (KeyCode.LeftArrow)) {
//transform.position += new Vector3 (-speed *Time.deltaTime , 0, 0);
transform.position += Vector3.left * speed *Time.deltaTime ;
}else if(Input.GetKey (KeyCode.RightArrow)) {
//transform.position += new Vector3 (speed *Time.deltaTime , 0, 0);
transform.position += Vector3.right * speed *Time.deltaTime ;
//deltatime giup phi thuyen di chuyen muot hon
// luu y " speed " va " -speed "
}
float newX = Mathf.Clamp (transform.position.x, xmin, xmax);
transform.position = new Vector3 (newX, transform.position.y, transform.position.z);
//clamp se giup phi thuyen gioi han trong khoang x va -x = 5
}
void OnTriggerEnter2D(Collider2D collider){
Projectile missile = collider.gameObject.GetComponent<Projectile> ();
//luu y : GetComponent ko co chu s o cuoi chu~; collider ko viet hoa dau` chu~
if (missile) {
Debug.Log ("player da va cham voi missile");
health -= missile.GetDamage();
missile.Hit();
if (health <=0){
Die();
Debug.Log ("chet tui roi !!!");
}
//line 61 den line 67 + chon kiem is trigger trong poly colider cua player,enemy se kill dc player
}
}
void Die(){
Destroy(gameObject);
LevelManager man = GameObject.Find ("LevelManager").GetComponent<LevelManager> ();
man.LoadLevel("Win Screen");
//luu y : GetComponent ko co chu~ s phia sau
}
}
