package;
import flixel.FlxG;
import flixel.FlxSprite;
import flixel.math.FlxPoint;
import flixel.util.FlxColor;
import states.StateGameplay;

/**
 * ...
 * @author ORL
 */
class Light extends FlxSprite
{
    private var _follow:FlxSprite;
    public var enabled:Bool;
    public var switchable:Bool = false;
    public var _scale:Float = 1;


    public function new(x:Float, y:Float, ?img:String, ?follow:FlxSprite, ?Switchable:Bool = false, ?Scale:Float = 1)
    {
        super(x, y);



        _follow = follow;
        switchable = Switchable;
        _scale = Scale;

        loadGraphic(img);

        this.blend = openfl.display.BlendMode.SCREEN;
        antialiasing = false;

        width = width *LightManager.RESOLUTION;
        height = height * LightManager.RESOLUTION;

        scale.x =   scale.x /2* Scale;
        scale.y = scale.y / 2*Scale;

        centerOffsets();
    }

    public function getXY():FlxPoint
    {
        if (_follow != null)
        {
            var pscreenXY:FlxPoint = _follow.getScreenPosition();

            return new FlxPoint(pscreenXY.x - width / 2  + _follow.width / 2, pscreenXY.y - height / 2  + _follow.height / 2);
        }
        else
        {
            return getScreenPosition();
        }
    }

    override public function update(elapsed:Float):Void
    {
        super.update(elapsed);

        //enabled = _follow.isOnScreen();


        enabled = false;
        if ( Utils.getDistance(StateGameplay.instance.player.getMidpoint(), _follow.getMidpoint()) <= 900)
        {
            enabled = true;
        }

        if (!switchable)
        enabled = true;

        if(switchable)
        if (FlxG.keys.justPressed.M)
        {
            alive = !alive;
        }

        alpha = StateGameplay.instance.darkness.alpha*1.4;//1.8
        //alpha = 1;//1.8
    }

}