Kiwi's Blog

Cool.

Recently I finished a pong clone for Atari 2600.

For the ball angles, my code is something like: (Ball Y pos) - (Player Y pos)

If Ball is on the player range, the result (0 up to 15, player height) is divided by 2 (byte shift) because 15 is too much, resulting 7 positions plus 0 (no vertical move). Then I use the result to index a table.

 

The table in this case is like -7,-6,-5,...0,1,2,...7. Positive to go down, negative to go up. So I can easily pick the vertical value for the ball. Note if ball hit the center of the player, the vertical value is 0, this why 0 is on center of the table.

 

I had plans to make computer space too. Is there a screenshot of your game?

The paddle position and which part of the paddle will determine the angle that the ball will go. If the ball hit the top of the paddle, then it'll go -3 up and 1 across with game speed adds to those value. There's 7 possible spots on the paddle that changes the ball projection and the arcade does the same behavior.

It is really awesome that you're doing an Atari 2600 version.

I will post a gif or video of Computer Space and Pong on the forums.

My plan was made both games as 2kb then I could release in a 4kb cart (Atari 2600 rom limit)

But Computer Space is very low priority on my to-do list.

It's a fun game, really.

 

 

I will post a gif or video of Computer Space and Pong on the forums.

Great!