AS Quiz #8

see http://actionsnippet.com/?p=2631

by makc3d 21 Jan 2010

Embed

// see http://actionsnippet.com/?p=2631
package  {
	import flash.display.Graphics;
	import flash.display.Sprite;
	public class Foo extends Sprite{
		public function Foo() {
			var s:Sprite = new Sprite; s.x = s.y = 50;
			addChild (s); drawStairs (s.graphics, 35);
		}
		public function drawStairs(g:Graphics, n:int):void {
			g.lineStyle (2);
			var i:int, s:Number = 10;
			// going down stairs
			for (i = 0; i < n; i++) {
				g.lineTo (s * (1 + i), s * (i - 1));
				g.lineTo (s * (2 + i), s * (i - 1));
				g.lineTo (s * (1 + i), s * i);
				g.lineTo (s * (1 + i), s * (i + 1));
			}
			// going up stairs
			for (i = n - 1; i > -1; i--) {
				g.moveTo (s * (1 + i), s * i);
				g.lineTo (s * i, s * i);
			}
			// jump down
			g.lineTo (0, s * n);
			g.lineTo (s * n, s * n);
			g.lineTo (s * (n + 1), s * (n - 1));
			// going up stairs again
			for (i = n - 1; i > -1; i--) {
				g.lineTo (s * (2 + i), s * (i - 1));
				g.moveTo (s * (1 + i), s * (i - 1));
			}
		}
	}
}