package;
import flixel.FlxG;
import flixel.FlxSprite;
import flixel.util.FlxColor;
import openfl.geom.Rectangle;

/**
 * ...
 * @author ORL
 */
class LightManager extends FlxSprite
{
    private var _maincol:Int;
    private var _lights:Array<Light>;
    public static var RESOLUTION:Int = 8;//4

    public function new(mainColor:Int = FlxColor.BLACK)
    {
        super(0, 0);
        _maincol = mainColor;
        makeGraphic(Std.int(FlxG.width/RESOLUTION), Std.int(FlxG.height/RESOLUTION), _maincol);
        scrollFactor.x = scrollFactor.y = 0;
        blend = openfl.display.BlendMode.MULTIPLY;

        width = width * RESOLUTION;
        height = height * RESOLUTION;
scale.x = scale.y = RESOLUTION;

centerOffsets();
screenCenter();
        antialiasing = false;

        _lights = [];
    }

    override public function update(elapsed:Float):Void
    {
        // Clear the canvas to a default state.
        graphic.bitmap.lock();
        graphic.bitmap.fillRect( new Rectangle(0, 0,  Std.int(FlxG.width/RESOLUTION), Std.int(FlxG.height/RESOLUTION)), FlxColor.fromRGB(0, 0, 0, 255));
        graphic.bitmap.unlock();

        //Add lights
        for (_light in _lights)
        {
            _light.update(FlxG.elapsed);//force update because lights are not attached to the stage

            if (_light.alive&&_light.enabled)
            {
                //stamp supports only Int coordinates so I'm trying to put it in the best position (needs to be reviewed)
                stamp(_light, Math.round(Math.floor(_light.getXY().x * 10) / 10 / RESOLUTION), Math.round(Math.floor(_light.getXY().y * 10) / 10 / RESOLUTION));
            }
        }

        super.update(elapsed);
    }

    public function addLight(light:Light):Void {
        _lights.push(light);
    }

    override public function destroy():Void
    {
    //  trace("destroy");
        for (_light in _lights)
        {
            _light.destroy();
        }

        super.destroy();
    }

}