Aaeeschylus

//In the enemy class:

var totalTime = 0;
NormEnemy.prototype.update = function(deltaTime)
{
	totalTime = totalTime + deltaTime;
	var mathsSin = (100*(Math.sin(totalTime*3)));
	if (this.ZigZagMovement == true)
	{
		this.position.x = this.zigZagMean + mathsSin;

Aaeeschylus

var level1Time = 0;

function level1TotalTimeUpdate(){
	level1Time = level1Time + deltaTime;
}

function level1Spawning() {

}