package tools;
import com.haxepunk.graphics.Image;
import com.haxepunk.HXP;
import flash.geom.Point;
import flash.geom.Rectangle;

/**
 * ...
 * @author Robin van Ee
 * http://rvanee.nl
 *
 * [email protected]
 *
 * Port of WolfEngine's SpriteRenderer component to HaxePunk
 */

class WolfSprite
{
    public var scale (default, set) : Point;

    function set_scale(val : Point) : Point
    {
        scale = val;
        Render();
        return scale;
    }

    public var frame (default, set) : Int = 0;

    function set_frame(f : Int) : Int
    {
        frame = f;
        Render();
        return frame;
    }

    public var image : Image;

    public var frameWidth : Int;
    public var frameHeight : Int;

    public var numFrames : Int;

    public var framesPerSecond : Int;

    private var clip : Array<Image>;

    private var sheetOffset : Int;

    private var _filename : String;

    private var realFrame : Float = 0;


    public function new(filename: String, fWidth : Int, fHeight : Int, ?offset : Int = 0, ?nFrames = HXP.INT_MAX_VALUE, ?FPS = 60)
    {
        _filename = filename;
        var sheet = new Image(filename);

        frameWidth = fWidth;
        frameHeight = fHeight;
        numFrames = nFrames;
        framesPerSecond = FPS;

        if (offset != null) sheetOffset = offset;

        clip = new Array<Image>();

        for(y in 0...cast(sheet.height / frameHeight))
        {
            for(x in 0...cast(sheet.width / frameWidth))
            {
                var tempRect : Rectangle = new Rectangle(x * frameWidth + (sheetOffset * x), y * frameHeight + (sheetOffset * y), frameWidth, frameHeight);
                var tempImage = new Image(filename, tempRect);
                clip.push(tempImage);
            }
        }

        scale = new Point(1, 1);

        sheet = null;

        Render();
    }

    public function play()
    {
        realFrame += framesPerSecond * HXP.elapsed;
        if (realFrame >= numFrames || realFrame >= clip.length) realFrame = 0;

        frame = cast(realFrame);
        Render();
    }

    private function Render()
    {
        image = clip[frame];
        image.scaleX = scale.x;
        image.scaleY = scale.y;
        image.centerOrigin();
    }

}