How to make objects fall when the player gets close

Questions & Answers
1

I have a game where you roll a ball around, collect yellow cubes, and avoid obstacles. I want to know how to add objects to fall when the player gets close.

3

Set the falling object rigidbody to “Is kinematic”.

Add a trigger that changes the isKinematic to false when the player enters it.

    public Rigidbody FallingObject;

    public void OnTriggerEnter(Collider other)
    {
        if (FallingObject.isKinematic)
            FallingObject.isKinematic = false;
    }
5

This requires that IsKinematic is off, since
“If isKinematic is enabled, Forces, collisions or joints will not affect the rigidbody anymore”, and gravity is a force.

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(Rigidbody))] //Make sure a rigidbody is attached to the falling object
public class fallingScript : MonoBehaviour {

	public Transform player; //This creates a slot in the inspector where you can add your player
	public float maxDistance = 5f; //This can be changed in the inspector to your liking
	private Rigidbody rigidbody;
	void Start () {
		rigidbody = GetComponent<Rigidbody> ();
		rigidbody.useGravity = false;
	}

	void Update(){
		if (Vector3.Distance (player.position, transform.position) < maxDistance) { //transform is the object that this script is attached to
			rigidbody.useGravity = true;
		}
	}
}
2

There are many different ways (raycast, trigger, distance) but this is a start: - YouTube

There are lots of resources out there.

4

You can make an array of all the objects you want to check with player, then you can check distance from player in a for loop.
GameObject[] GameObjectArray; for (int i = 0; i < GameObjectArray.Length; i++ ) { float distance = Vector3.Distance(yourPlayer.transform.position,GameObjectArray*.transform.position);* *// YourPlayer is name for your player* *if (distance < 1f) // choose your distance here* *{* *// Your Logic here for making objects fall* *}* *}*