koobas.hobune.stream
Can't Get gravity function to work
I want to have one "particle" attract other particles to it. So to test it, I created two spheres. One of which I added the following code to: [RequireComponent(typeof(Rigidbody))] public class Attraction : MonoBehaviour { public float pullRadius = 2; public float pullForce = 1;
public void FixedUpdate()
{
foreach (Collider collider in Physics.OverlapSphere(transform.position, pullRadius)) {
// calculate direction from target to me
Vector3 forceDirection = transform.position - collider.transform.position;
// apply force on target towards me
collider.GetComponent<Rigidbody>().AddForce(forceDirection.normalized * pullForce * Time.fixedDeltaTime);
}
}
}
But what ends up happening is nothing. I tried making the radius of pull greater, and the other sphere wouldn't move toward the initial one, and I have no idea why. It just didn't move. Help!
Here this should help, I normally go around it by finding Rigid body's in a sphere however to keep it simple below should work,(using deltatime instead of fixeddeltatime)
using UnityEngine;
public class Gravity : MonoBehaviour {
//Create Public Variables
public float pullForce = 2f;
public float pullRange = 10f;
void Update () {
//First lets find all colliders in the shere
foreach(Collider coll in Physics.OverlapSphere(transform.position, pullRange))
{
//Get the Direction
Vector3 pullDirection = transform.position - coll.gameObject.transform.position;
//Aplly the force onto the object but multiply it by delta time instead of fixeddeltatime
coll.gameObject.GetComponent<Rigidbody>().AddForce(pullDirection.normalized * pullForce * Time.deltaTime);
}
}
}
