Resource management

Main.hx

class Main extends Engine
{
	override function init()
	{
		// resources added in Engine are kept in memory
		resources.addTexture("graphics/player.png");
		
		// if a Scene resources aren't all available push preloader on scene stack until they are
		preloader = new MyCustomPreloadingScreen();
		
		scene = new Level1();
	}
}

class Level1 extends Scene
{
	var next : Scene;

	override function assetsRequest()
	{
		// resources added in Scene are removed at the end of the scene
		// unless some other Scene has it loaded too (reference count)
		resources.addTexture("graphics/badguy.png");
		resources.addTexture("graphics/background.png");
		resources.addFont("fonts/helvetica.ttf");
	}
	
	override function begin()
	{
		// called without showing the preloader
		// if all resources are already loaded

		// now can use the assets
		new Image("graphics/player.png");
		new Image("graphics/badguy.png");
		// (...)
		
		// preload next level
		next = new Level2();
		next.preload();
	}
	
	override function update()
	{
		// at some point
		resources.freeTexture("graphics/badguy.png");
	}
}