Can't count the hit bowling pins[physics in 3d]

Attach this script to your bowling ball:

 public class BowlingBall : MonoBehaviour {
     
     public bool collided = false;
     
     void OnCollisionEnter(Collision other){
         
         //checking if the bowling ball has collided with pins, not the floor
         if (other.gameObject.tag == "pin" && !collided){
             collided = true; // prevents the wait function from running multiple times
             StartCoroutine(Wait());
         }
     }
     
     public IEnumerator Wait(){
         // wait for 5 seconds (the f makes the number we enter a float)
         yield return new WaitForSeconds(5.0f);
         
         // looping through each pin prefab and calling the tallyScore function
         GameObject[] pins = FindObjectsOfType(typeof(GameObject)) as GameObject[];
         foreach (GameObject pin in pins) {
             pin.GetComponent<Pins> ().tallyScore();
         }
     }
 }

Attach this script to your pin prefab:

 public class Pins : MonoBehaviour {
     
     public static int score = 0;
 
     public void TallyScore(){
         
         //checking if the pin is standing up (if it's not, the pin's rotation will be not 0)
         if (transform.rotation.x < 1 && transform.rotation.z < 1){
             //pin is standing up (do nothing)
         } else {
             //pin is knocked over
             score++;
         }
     }
 }

This code basically checks if the bowling ball has hit a pin, waits 5 seconds, then checks if the pin is knocked over, and if it is, it adds one to the score.

Score is static so that each prefab doesn't have its own separate score, they all share the one variable.

If you have any questions, do not hesitate to ask!

EDIT: NEW PIN SCRIPT TESTING

  public class Pins : MonoBehaviour {
  
      void Update(){
          
          if (transform.rotation.x < 1 && transform.rotation.z < 1){
              Debug.Log("Pin Standing Up");
          } else {
              Debug.Log("Pin Knocked Over");
          }
      }
  }

Try attaching this script to your pin prefab and turning it over onto its side while you watch the console.

Make sure that the changes you make to the pin are applied to the prefab.

Hello @n314p and thank you again.

I added the new script and now the whole time I have the message "Pin is Standing UP" . It doesn't change regardless of the position of the pins. I have attached it to the pin prefabs so all Pin objects have the script.

Also, the nUllreferenceexception error is still there. I think I am not initializing the pins correctly. This is my Ball script. using System.Collections.Generic; using UnityEngine;

public class BallMovement : MonoBehaviour {

 //force per one pixel
 public float powerPerPixel;
 public float maxPower;
 public float sensitivity;
     public bool collided = false;
 Vector3 touchPosition;
 bool isMoving;


 // Use this for initialization
 void Start () 
 {
     isMoving = false;

 }
 
 // Update is called once per frame
 void Update ()
 {
     if (!isMoving) 
     {
         if (Input.GetMouseButtonDown (0))
         {
             touchPosition = Input.mousePosition;
         }
         else if (Input.GetMouseButtonUp (0)) 
         {
             isMoving = true;
             transform.Rotate (new Vector3 (1, 5, 10) * Time.deltaTime);
             Vector3 releasePosition = Input.mousePosition;

             float swipeDistanceY = releasePosition.y - touchPosition.y;
             float power = swipeDistanceY * powerPerPixel;
             float swipeDistanceX = releasePosition.x - touchPosition.x;
             float throwDirection = swipeDistanceX * sensitivity;

             if (power < 0) {
                 power *= -1;
             }

             if (power > maxPower) {
                 power = maxPower;
             }

             GetComponent<Rigidbody> ().AddForce (new Vector3 (throwDirection, 0, power), ForceMode.Impulse);
         }

     }
             
 }
 

 void OnCollisionEnter(Collision other)
 {
     if (other.gameObject.tag == "pin" & !collided) {
         collided = true;
         StartCoroutine (Wait());
     }
 }

 public IEnumerator Wait()
 {
     yield return new WaitForSeconds (5.0f);

     GameObject[] pins = FindObjectsOfType (typeof(GameObject)) as GameObject[];
     //GameObject[] pins = GameObject.FindGameObjectsWithTag("pin") as GameObject[];
     foreach (GameObject pin in pins) {
         pin.GetComponent<Pins> ().TallyScore ();
     }
     Debug.Break ();
 }

}

Also, I noticed that when my ball collides with the pins, the z value stays higher than 1.

My pins script is the same as you suggested. using System.Collections; using System.Collections.Generic; using UnityEngine;

public class Pins : MonoBehaviour {

 public static int score = 0;

 void Update()
 {
     if (transform.rotation.x < 1 && transform.rotation.z < 1) {
         Debug.Log ("Pin Standing Up");
     } else {
         Debug.Log ("Pin Knocked Over");
     }

 }

 public void TallyScore()
 {
     if (transform.rotation.x < 1 && transform.rotation.z < 1) {

     } else {
         score++;
     }
 }

}

to calculate the bowling score accuratly, counting of bowling pins is essential in the game. go bowling alley