HTML5 – Completing Your Game Proglan HTML5 Part 3

The Bricks var bricks; var NROWS; var NCOLS; var BRICKWIDTH; var BRICKHEIGHT; var PADDING; function initbricks() { NROWS = 5; NCOLS = 5; BRICKWIDTH = (WIDTH/NCOLS) - 1; BRICKHEIGHT = 15; PADDING = 1; bricks = new Array(NROWS); for (i=0; i < NROWS; i++) { bricks[i] = new Array(NCOLS); for (j=0; j < NCOLS; j++) { bricks[i][j] = 1; } function draw() { clear(); circle(x, y, 10); if (rightDown) paddlex += 5; else if (leftDown) paddlex -= 5; rect(paddlex, HEIGHT-paddleh, paddlew, paddleh); //draw bricks for (i=0; i < NROWS; i++) { for (j=0; j < NCOLS; j++) { if (bricks[i][j] == 1) { rect((j * (BRICKWIDTH + PADDING)) + PADDING, (i * (BRICKHEIGHT + PADDING)) + PADDING, BRICKWIDTH, BRICKHEIGHT); } //have we hit a brick? rowheight = BRICKHEIGHT + PADDING; colwidth = BRICKWIDTH + PADDING; row = Math.floor(y/rowheight); col = Math.floor(x/colwidth); //if so, reverse the ball and mark the brick as broken if (y = 0 && col >= 0 && bricks[row][col] == 1) { dy = -dy; bricks[row][col] = 0; } if (x + dx > WIDTH || x + dx < 0) dx = -dx; if (y + dy < 0) dy = -dy; else if (y + dy > HEIGHT) { if (x > paddlex && x < paddlex + paddlew) dy = -dy; else clearInterval(intervalId); } x += dx; y += dy; } init(); initbricks();

Finishing Touches var ballr = 10; var rowcolors = ["#FF1C0A", "#FFFD0A", "#00A308", "#0008DB", "#EB0093"]; var paddlecolor = "#FFFFFF"; var ballcolor = "#FFFFFF"; var backcolor = "#000000"; function draw() { ctx.fillStyle = backcolor; clear(); ctx.fillStyle = ballcolor; circle(x, y, ballr); if (rightDown) paddlex += 5; else if (leftDown) paddlex -= 5; ctx.fillStyle = paddlecolor; rect(paddlex, HEIGHT-paddleh, paddlew, paddleh); drawbricks(); //want to learn about real collision detection? go read // rowheight = BRICKHEIGHT + PADDING; colwidth = BRICKWIDTH + PADDING; row = Math.floor(y/rowheight); col = Math.floor(x/colwidth); //reverse the ball and mark the brick as broken if (y = 0 && col >= 0 && bricks[row][col] == 1) { dy = -dy; bricks[row][col] = 0; } if (x + dx + ballr > WIDTH || x + dx - ballr < 0) dx = -dx; if (y + dy - ballr < 0) dy = -dy; else if (y + dy + ballr > HEIGHT - paddleh) { if (x > paddlex && x < paddlex + paddlew) { //move the ball differently based on where it hit the paddle dx = 8 * ((x-(paddlex+paddlew/2))/paddlew); dy = -dy; } else if (y + dy + ballr > HEIGHT) clearInterval(intervalId); } x += dx; y += dy; } init(); initbricks();

Enjoy your game