Issue with Object Staying Collided

Hi everyone,

My code attempts to detect if the pizza in my game is collided with the user-controlled hand. If it is, then the hand will be able to add velocity to the pizza, effectively tossing it. However, I have colliders on the edge of the screen to prevent the pizza from flying off. When the pizza is collided with the edges, the hand can still add velocity to the pizza even though the hand isn't actually touching it.

Code (JavaScript):

1. #pragma strict
2. var collided = false;
3. var thrust: float;
4. var pizza : Rigidbody2D;
5.  
6.   function Start() {
7.       //get the rigidbody of the pizza-small object
8.    pizza = GameObject.Find("pizza-small").GetComponent.<Rigidbody2D>();
9.   }
10. //hand + pizza collision detection
11. function OnCollisionStay2D(coll: Collision2D) {
12.      if (coll.gameObject.tag == "Pizza") {
13.          collided = true;
14.      }
15.      else {
16.          collided = false;
17.      }
18. }
19. function Update() {
20.      //constantly detects collision
21.      if (collided === true) {
22.          Debug.Log("Hand+Pizza");
23.      }
24. //Input
25. if (Input.GetKey(KeyCode.W)) {
26.      Debug.Log("Up");
27.      transform.position.y+= 0.2;
28.      if (collided === true) {
29.      //Adding force to the pizza
30.      pizza.velocity = Vector3(0,15,0);
31.      }
32. }
33. //left
34. else if (Input.GetKey(KeyCode.A) || Input.GetKey("left")) {
35.      Debug.Log("Left");
36.      transform.position.x-= 0.1;      
37. }
38. //right
39. else if (Input.GetKey(KeyCode.D) || Input.GetKey("right")) {
40.      Debug.Log("Right");
41.      transform.position.x+= 0.1;      
42. }
43. //down
44. else if (Input.GetKey(KeyCode.S) || Input.GetKey("down")) {
45.      Debug.Log("Down");
46.      transform.position.y-= 0.1;      
47. }
48. //moves the hand back to it's original position - gravity was wonky so I decided against using a rigidbody
49. else if (transform.position.y > -3.5) {
50.      transform.position.y-= 0.25;
51. }
52. else {
53.      collided = false;
54. }
55. }
56.  

The above script handles input and collision. Collided remains true when the pizza is collided with the edge colliders.

I only want the pizza to gain upward velocity if the hand is colliding with it, and I'm kind of stuck, any insight would be really appreciated!

 

OnCollisionStay is only called in frames when the collision is ongoing. If the collision stops it isn't going to be called.

If you want to do something when a collision ends (i.e. set your boolean to false) you need to use OnCollisionExit

 

I've tried adding OnCollisionExit, but since I can't put it inside of Update(), it appears to not solve anything as it doesn't check collision constantly and I don't know how to implement it.

Edit: I got it! I was using an if statement to detect the tag earlier, but since I removed that it works!