using KumiScript.Loader;
using SDL2;

namespace KumiScript.Renderer
{
    public class Background : SceneElement, IDisposable
    {
        SDLTexture _texture;
        SDLRenderer _renderer;
        int _height;
        int _width;
        int _anim;
        int _frame;

        public Background(string path, SDLRenderer renderer)
        {
            _texture = new SDLTexture(path, renderer);
            _renderer = renderer;
            KSMetaParser parser = new KSMetaParser(string.Concat(path, ".ksmeta"));
            _width = parser.GetAttribute("width");
            _height = parser.GetAttribute("height");
            _anim = 0;
            _frame = 0;
        }

        public void Dispose()
        {
            _texture.Dispose();
            return;
        }

        public override void Draw(int x, int y)
        {
            SDL.SDL_Rect destRect = new SDL.SDL_Rect();
            destRect.x = x;
            destRect.y = y;
            destRect.w = 800;
            destRect.h = 600;
            
            SDL.SDL_Rect sourceRect = new SDL.SDL_Rect();
            sourceRect.x = _anim * _width;
            sourceRect.y = _frame * _height;
            sourceRect.w = _width;
            sourceRect.h = _height;

            _texture.Draw(_renderer, sourceRect, destRect);
        }

        public override int GetBitmapHeight()
        {
            return 600;
        }

        public override int GetBitmapWidth()
        {
            return 800;
        }
    }
}