How to make spreading fire

Questions & Answers
1

How could I make a script to make fire spread across the screen slowly by cloning a new particle system next to the original one

2

You’d want to clone your particle system every preset amount of time. The only tricky part would be making sur ehte fire does not appear in a place that there already is fire.

To just clone the fire, you’d use a script like this attached to your fire particle system:

private var startTime : float;
var pollTime : float = 5.0; // Seconds between fire spreading
var spaceToSpread : Vector3 = new Vector3(1,0,1);
function Start()
{
startTime = Time.time;
}

function Update()
{
	if(Time.time > startTime + pollTime)
	{
		startTime = Time.time;
		CloneFire();
	}
}

function CloneFire()
{
	var newFirePos : Vector3 = transform.position + Vector3(Random.Range(- spaceToSpread.x, spaceToSpread.x), Random.Range( -spaceToSpread.y, spaceToSpread.y), Random.Range(- spaceToSpread.z, spaceToSpread.z)); 
	var newFire = GameObject.Instantiate(gameObject, newFirePos, Quaternion.identity);
}