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bB starfield effect


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#51 atari2600land OFFLINE  

atari2600land

    The excitement of a game

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Posted Mon Apr 1, 2019 11:43 PM

Found this and played around with it so I thought I'd share something I discovered.

 

Perhaps you don't want the star field to cover the whole screen. Perhaps just the first half. You can put this in your game:

 bally=44
 ballheight=128

Replace "ball" with whatever you're using if not the ball. You'll notice that it makes the starfield effect for the top half.

To do only the bottom half, replace "bally=44" with "bally=177"



#52 atari2600land OFFLINE  

atari2600land

    The excitement of a game

  • 11,724 posts
  • The mind of a computer.
  • Location:Salem, Oregon

Posted Sun Apr 7, 2019 11:27 AM

Apparently this only works if you've set it to ball and not missile0. Any ideas as to why?



#53 Karl G OFFLINE  

Karl G

    Dragonstomper

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Posted Sun Apr 7, 2019 11:54 AM

It works with any of the objects. For missile0, you need to change HMBL in the assembly portion to HMM0.

#54 atari2600land OFFLINE  

atari2600land

    The excitement of a game

  • 11,724 posts
  • The mind of a computer.
  • Location:Salem, Oregon

Posted Sun Apr 7, 2019 12:06 PM

I did.

EDIT: I meant the height thing I posted earlier.



#55 Karl G OFFLINE  

Karl G

    Dragonstomper

  • 819 posts

Posted Sun Apr 7, 2019 12:15 PM

Oh, sorry. It doesn't work for you if you set missile0height instead?

#56 atari2600land OFFLINE  

atari2600land

    The excitement of a game

  • 11,724 posts
  • The mind of a computer.
  • Location:Salem, Oregon

Posted Sun Apr 7, 2019 12:34 PM

Nope. It just displays the starfield all over the screen.






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