import 'dart:html';

class Game {
  List<List<Color>> grid;
  CanvasElement canvas;
  CanvasRenderingContext2D ctx;

  double _oscill = 0.0;
  bool _fwd = true;

  Game(CanvasElement this.canvas) {
    grid = buildGrid(5,5, new Color(255, 100, 255));
    ctx = this.canvas.getContext('2d');
  }

  void update([num dt]) {}

  void draw([num interp]) {
    int brickW = (canvas.width ~/ grid[0].length);
    int brickH = (canvas.height ~/ grid.length);

    ctx.setFillColorRgb(255, 0,0);
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    for(int y=0;y<grid.length;y++) {
      for(int x=0;x<grid[y].length;x++) {
        Color col = grid[y][x];
        ctx.setFillColorRgb(col.r, col.g, col.b);
        ctx.fillRect(x*brickW, y*brickH, brickW, brickH);
      }
    }
  }

  Color _oscillate(Color) {

  }

  List<List<Color>> buildGrid(int w, int h, Color col) {
    List<List<Color>> grid = new List(h);


    for(int y = 0; y< h; y++) {
      grid[y] = new List(w);
      for(int x = 0; x< w; x++) {
        grid[y][x] = col;
      }
    }
    return grid;
  }
}

class Color {
  final int r;
  final int g;
  final int b;

  const Color(this.r, this.g, this.b);

}

// Create 2d array
// fill with random colors
// cycle colors
// set one color to random new one