Sunday, August 16, 2009

Creating a game with APE - APEOut - Part 2

In part 2 of this tutorial, we're going to add the bricks and add motion for the bat. Make sure you've read the first part of this tutorial and lets get going.

Creating the bricks :

Add the following code to the initObjects method after creating the ball.Also create a private variable brickCount for the number of bricks in the stage.
var rows:int = 5;
var cols:int = 8;

brickCount = rows * cols;

var currentX:Number = 100;
var currentY:Number = 100;

var brickWidth:Number = 50;
var brickHeight:Number = 10;

for (var i:uint = 0; i < rows; i++)
for (var j:uint = 0; j < cols; j++)
var brick:RectangleParticle = new RectangleParticle(currentX, currentY, rickWidth, brickHeight, 0, true, 1, 0.3, 1);
brick.setFill(Math.random() * 0xFFFFFF);
currentX += brickWidth + 5;
currentX = 100;
currentY += brickHeight + 5;
What we're doing here is simply creating a brick at the position (currentX,currentY) and incrementing with the brickWidth and a gap value. We also set a random color for the bricks. Run the file. You'll see a ball bouncing on the bat and about 40 bricks lined up in 5 rows. When the ball collides with the brick, it just bounces off. Moving the bat : To move the bat just add the line
bat.px = mouseX;
before the APEngine.step() call in the onEnterFrame event handler. If you run the game now, you'll see that the image of the bat doesn't move but if you move your mouse, the ball will fall down. So, add the following line under the bat defnition.
bat.alwaysRepaint = true;

Now, it looks something like a game. We have the bat, the ball and the bricks. All we need is to add collision detection and scores. We'll do that in the next post.
Stay tuned.

1 comment:

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