Passing data from one script to another

So my goal is simple, when the player touches a trigger box rocks fall down, what i have got actually works fine, the only issue is that only one rock object falls down and the others do not, so here is what i have.

Gameobject (rock) using script (Rock_phys).
Gameobject (trigger_falling) this is the trigger box using script (trigger_falling).

I need to pass a true value to the "use gravity" parameter in the rock's rigidbody once the player meets the trigger area the code is as follows.

code for trigger_falling:

Code (csharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. public class trigger_falling : MonoBehaviour {
7.     private int fnum = 30;
8.     private Rock_phys rockphys;
9.  
10.  
11. void Awake() //events
12. {
13. rockphys = GameObject.FindObjectOfType <Rock_phys> ();
14. }
15.           void OnTriggerEnter (Collider other)
16.     {
17.         rockphys.andy(fnum);
18.         rockphys.fall(true);
19.     }
20.  }
21.  
22.  

Code for Rock_phys:

Code (csharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. public class Rock_phys : MonoBehaviour {
7.     public Rigidbody rb;
8.     public void andy(float f)
9.     {
10.         //rb.AddForce(f,0,0);  
11.     }
12.            public void fall(bool grav)
13.     {
14.         rb.useGravity = grav ;
15.     }
16.     void Start ()
17.     {
18.         rb.useGravity = false;
19.     }
20.     void Update () {
21.     }
22. }
23.  

Help appreciated thank you.

 

Please look at this page for posting code on the forums: https://forum.unity.com/threads/using-code-tags-properly.143875/
You can edit your post & keep it in mind for future posts.. =)

Okay, so my response would be: Create an array (or list) , make it public or use the attribute SerializeField.
Then drag n drop all the rocks that would be triggered by the unique area (of falling rocks).
This will mean instead of 1 Rock_phys you have an array/list of them. (plus, you don't need to FindObjectOfType, either).

Lastly, just go over the list and do what you're doing now (on each element of the list or array).

 

Might look like:

Code (csharp):

1.  
2. // top of the class area:
3. [SerializeField]
4. Rock_phys [] allrocks;
5.  
6. // trigger portion of code, as you had it, but with the array used:
7. void OnTriggerEnter (Collider other)
8. {
9.    for(int i = 0; i < allrocks.Length; ++i) {
10.       allrocks[i].andy(fnum);
11.       allrocks[i].fall(true);
12.    }
13. }
14. // Awake section: (erased.. gone.. :))
15.