Bouncing bomb and the little alien.

I am making a game using p5js; here is how it will work:

Here is a little alien at the center of the canvas:

It can be controlled by WASD to move around.

Here is a ball.

Bouncing on the Canvas.

The game will end once the ball and the alien hit each other.

Codes:

There will be 3 balls and an “Alien” Emoji: