Increase Speed

Questions & Answers
1

I’m trying to script a cube where upon going through a bigger cube, it increases speed.
Here’s my code:

using UnityEngine;
using System.Collections;

public class IncreaseSpeed : MonoBehaviour {
	public float speed;
	
	void OnTriggerEnter(Collider other) {
		
		if(other.gameObject.CompareTag("Trigger01")){
			rigidbody.AddForce(0,0,speed);
			Debug.Log("We've finally touched!");
	}
}
		}

The console reads the Debug Log “We’ve finally touched!” so it’s detecting collision and the trigger does work.

So why isn’t a force being added to the cube? I was thinking maybe it’s because I have this in an OnTriggerEnter method and that it’s only adding a force to the rigidbody for one frame?

I’d appreciate any assistance. Thank you for your time.

2

As force is applied over time but OnTriggerEnter only happens once per event, you need to use Impulse Force Mode in your Add Force :

AddForce : Unity - Scripting API: Rigidbody.AddForce

ForceMode.Impulse : Unity - Scripting API: ForceMode.Impulse

all ForceModes : Unity - Scripting API: ForceMode

Replace the Addforce line in your script to :

rigidbody.AddForce( 0, 0, speed, ForceMode.Impulse );

or you may want to use :

rigidbody.AddForce( transform.forward * speed, ForceMode.Impulse );