class AntClass extends MovieClip {
	var v:Number;
	public function init() {
		this._x=random(640);
		this._y=random(480);
		this._rotation=random(360);
		this.onRollOver = function() {
			this._alpha = 50
		}
		
		this.v = 3.0;
		
		this.onEnterFrame = this.moveAroundium;
	}
	
	public function moveAroundium() {
		var vx = this.v*Math.cos(Math.PI / 180 * this._rotation);
		var vy = this.v*Math.sin(Math.PI / 180 * this._rotation);
		
		this._x+=vx;
		this._y+=vy;
		
		// bound check
		if (this._x<0) {
			this._x=640;
		} else if (this._x>640) {
			this._x=0;
		}
		if (this._y<0) {
			this._y=480;
		} else if (this._y>480) {
			this._y=0;
		}
		
		// randomly change direction of travel
		this._rotation+=15*(Math.random()-Math.random());
		
	}
}