import java.awt.*; 

abstract class Shape {

  int curX = 5, curY = 10; 

  Color color;
  World world;
  int coords[][];
  Shape(World world) {
    this.world = world; 
  } 

  void drawSquare(Graphics g, int x, int y) {

        g.setColor(color);
        g.fillRect(x + 1, y + 1, world.squareWidth() - 2, world.squareHeight() - 2);

        g.setColor(color.brighter());
        g.drawLine(x, y + world.squareHeight() - 1, x, y);
        g.drawLine(x, y, x + world.squareWidth() - 1, y);

        g.setColor(color.darker());
        g.drawLine(x + 1, y + world.squareHeight() - 1, x + world.squareWidth() - 1, y + world.squareHeight() - 1);
        g.drawLine(x + world.squareWidth() - 1, y + world.squareHeight() - 1, x + world.squareWidth() - 1, y + 1);

   }

  void draw(Graphics g) { 
    
        Dimension size = world.getSize();
        int boardTop = (int) size.getHeight() - world.BoardHeight * world.squareHeight();

        for (int i = 0; i < 4; ++i) {
            int x = curX + this.x(i);
            int y = curY - this.y(i);
            drawSquare(g, 0 + x * world.squareWidth(), boardTop + (world.BoardHeight - y - 1) * world.squareHeight());
        }
  }

  private void setX(int index, int x) { coords[index][0] = x; }
  private void setY(int index, int y) { coords[index][1] = y; }
  public int x(int index) { return coords[index][0]; }
  public int y(int index) { return coords[index][1]; }
  
  public int minX()
  {
    int m = coords[0][0];
    for (int i=0; i < 4; i++) {
      m = Math.min(m, coords[i][0]);
    }
    return m;
  }
  public int minY() 
  {
    int m = coords[0][1];
    for (int i=0; i < 4; i++) {
      m = Math.min(m, coords[i][1]);
    }
    return m;
  }
  
  boolean tryMove(int newX, int newY)
  {
    // for (int i = 0; i < 4; ++i) {
    //   int x = newX + this.x(i);
    //   int y = newY - this.y(i);
    //   if (x < 0 || x >= world.BoardWidth || y < 0 || y >= world.BoardHeight)
    //     return false;
    //   if (world.shapeAt(x, y) != null && ! (world.shapeAt(x, y) instanceof NoShape))
    //     return false;
    // }
    
    this.curX = newX;
    this.curY = newY;
    world.repaint();
    return true;
  }
  
  
}