Drawing some land

gistfile1.hx

package ;

import nme.display.Bitmap;
import nme.display.BitmapData;
import nme.display.Sprite;
import nme.display.StageAlign;
import nme.display.StageScaleMode;
import nme.display.Graphics;
import nme.events.Event;
import nme.Assets;
import nme.Lib;

/**
 * ...
 * @author Wim Vander Schelden
 */

class Main extends Sprite 
{
	private var blue:Bitmap;
	private var red:Bitmap;
	private var dirt:BitmapData;
	private var land:Sprite;
	
	private var sky:Bitmap;
	private var skyWidth:Float;
	private var skyHeight:Float;
	private var skyAspect:Float;
	
	public function new()
	{
		super ();
		addEventListener (Event.ADDED_TO_STAGE, this_onAddedToStage);
	}
	
	private function regenerateLand():Void
	{	
		var g:Graphics;
		g = land.graphics;
		g.clear();
		g.beginBitmapFill(dirt);
		//g.beginFill(0xFF0000);
		//g.drawRect(0, 0, 100, 100);
		g.drawRect(0, 3*stage.stageHeight / 4, stage.stageWidth, 3*stage.stageHeight / 4);
		g.endFill();
	}
	
	private function stage_onResize (event:Event):Void
	{
		red.x = 3*(stage.stageWidth - red.width) / 4;
		red.y = 3*(stage.stageHeight - red.height) / 4;
		blue.x = (stage.stageWidth - blue.width) / 4;
		blue.y = 3*(stage.stageHeight - blue.height) / 4;
		
		// Sky background should be scaled to maintain correct aspect ratio.
		var stageAspect:Float;
		stageAspect = stage.stageWidth / cast(stage.stageHeight, Float);
		if ( stageAspect > skyAspect )
		{
			sky.width = stage.stageWidth;
			sky.height = stage.stageWidth / skyAspect;
		} else {
			sky.width = stage.stageHeight * skyAspect;
			sky.height = stage.stageHeight;
		}
		
		regenerateLand();
	}
	
	private function this_onAddedToStage (event:Event):Void
	{
		land = new Sprite();
		land.x = 0; land.y = 0;
		addChild(land);
		
		sky  = new Bitmap (Assets.getBitmapData ("img/sky.png"));
		skyWidth = sky.width; skyHeight = sky.height;
		sky.width = stage.stageWidth; sky.height = stage.stageHeight;
		skyAspect = skyWidth / skyHeight;
		
		blue = new Bitmap (Assets.getBitmapData ("img/blue.png"));
		blue.width  = blue.width / 8; blue.height = blue.height / 8;
		red = new Bitmap (Assets.getBitmapData ("img/red.png"));
		red.width  = red.width / 8;	red.height = red.height / 8;
		
		dirt = Assets.getBitmapData ("img/dirt.jpg");
		
		stage_onResize(null);
		addChild(sky);
		addChild (blue);
		addChild(red);
		
		stage.addEventListener (Event.RESIZE, stage_onResize);
	}
	
	static public function main() 
	{
		var stage = Lib.current.stage;
		stage.scaleMode = nme.display.StageScaleMode.NO_SCALE;
		stage.align = nme.display.StageAlign.TOP_LEFT;
		
		Lib.current.addChild(new Main());
	}
	
}