090 : Node 090
Balthazar:
Handle bouncing off the walls.
script.js:
// Handle ball movement.
// Handle ball movement and collision.
function update_ball() {
_ball.x += _ball.velocity_x;
_ball.y += _ball.velocity_y;
// Bounce off horizontal walls.
if (_ball.y <= 0) {
_ball.velocity_y *= -1;
}
if (_ball.y >= _game.height - _ball.height) {
_ball.velocity_y *= -1;
}
// Bounce off vertical walls.
if (_ball.x <= 0) {
_ball.velocity_x *= -1;
}
if (_ball.x >= _game.width - _ball.width) {
_ball.velocity_x *= -1;
}
}