import objectdraw.*;

// Play the vintage pong-like video game "breakout"
// Display walls of bricks on the screen, a moving
// ball and a paddle.  When the ball hits a brick
// the brick disappears while the ball bounces off.
public class Breakout extends FrameWindowController {

    // paddle dimensions
    private static final double PADDLE_WIDTH = 70;
    private static final double PADDLE_HEIGHT = 10;
    
    // dimensions of the grid in which bricks are placed
    private static final int NUM_COLS = 7;
    private static final int NUM_ROWS = 30;

    // the paddle
    private FilledRect paddle;

    // the collection of bricks placed in the playing area
    private BreakoutBricks bricks;

    // create the boundary and the paddle
    public void begin() {

        paddle = new FilledRect(canvas.getWidth()/2 - PADDLE_WIDTH/2,
            canvas.getHeight() - (PADDLE_HEIGHT + 2),
            PADDLE_WIDTH, PADDLE_HEIGHT, canvas);
            
        // create the bricks
        bricks = new BreakoutBricks(NUM_ROWS * NUM_COLS);

        // add two walls of bricks
        addWall(3, 4);
        addWall(10, 7);
    }

    private static final int BRICK_SPACING = 2;

    public void addWall(int startingRow, int wallRows) {
        
       double brickWidth = canvas.getWidth() / NUM_COLS;
       double brickHeight = canvas.getHeight() / NUM_ROWS;
        
        for (int row = startingRow; row < startingRow + wallRows; row++) {
            for (int col = 0; col < NUM_COLS; col++) {
                bricks.add(new FilledRect(col * brickWidth + BRICK_SPACING, 
                        row * brickHeight + BRICK_SPACING, 
                        brickWidth - BRICK_SPACING,
                        brickHeight - BRICK_SPACING, canvas));
            }
        }
    }

    // Make a new ball whenever the user clicks
    public void onMouseClick(Location point){
        new BreakoutBall(bricks, paddle, canvas);
    }

    // make the paddle follow the mouse back and forth
    public void onMouseMove(Location point){
        if (point.getX() < PADDLE_WIDTH/2) {
            paddle.moveTo(0, paddle.getY());
        } else if (point.getX() + PADDLE_WIDTH > canvas.getWidth()) {
            paddle.moveTo(canvas.getWidth() - PADDLE_WIDTH, paddle.getY());
        } else {
            paddle.moveTo(point.getX() - PADDLE_WIDTH/2, paddle.getY());
        }
    }

}