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William Leue
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Joined: 03/07/2020
Location: United States
Posts: 405

Posted: 09:30pm 27 Oct 2022

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I have looked through the manuals, including Peter's graphics posts, but can't seem to find a solution for this:

I have a large number of sprites (more than 50) in a game I am writing, and I need to do simple animation in which each sprite has two different images, and they need to periodically switch back and forth between the 2 images.

The obvious way to do this is to have 2 sets of sprites and toggle back and forth between show and hide. But sadly I have too many sprites for this to be possible.

Any clues for an efficient way to do this up to a few times per second?

-Bill

bar1010
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Joined: 10/08/2020
Location: United States
Posts: 197

Posted: 03:47am 28 Oct 2022

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Mauro�s Gauntlet has animated sprites. Take a look at his code.
Also animated GIFs is a possibility.

Volhout
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Joined: 05/03/2018
Location: Netherlands
Posts: 5091

Posted: 06:26am 28 Oct 2022

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Martin H combines 2 sprites in one. This only works for symetrical prites though.
The left half is sprite 1, the righ half is sprite 2.
Not sure if that helps in any way. He used it in "on the road".

Volhout

PicomiteVGA PETSCII ROBOTS

Martin H.

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Joined: 04/06/2022
Location: Germany
Posts: 1234

Posted: 07:19am 28 Oct 2022

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Volhout said Martin H combines 2 sprites in one. This only works for symetrical prites though.
The left half is sprite 1, the right half is sprite 2.
Not sure if that helps in any way. He used it in "on the road".
Volhout

that does just work, if the Sprites are Symmetic
then you can use half of the Sprite and mirror it, when needed..
But you'll still need the same Number of Sprites, so I think it would'nt help in Bills case. (50 or more)
If the "Protagonists" (or some of them) are monochrome, you might use GUI BITMAP Instead of SPRITE/BLIT. these are stored in Strings and uses just one Bit/Pixel.
if you store these "Sprites" in a 2 dimensional StringArray, you are able to animate them, by chousing a different dimension. (as I've done in PicoVaders)

Cheers
Mart!n
Edited 2022-10-28 17:25 by Martin H.

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William Leue
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Joined: 03/07/2020
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Posted: 12:46pm 28 Oct 2022

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Thanks to bar1010, Volhout, and Martin H. for suggestions! I think those ideas will be very helpful.

-Bill

stanleyella

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Joined: 25/06/2022
Location: United Kingdom
Posts: 2567

Posted: 08:34pm 29 Oct 2022

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I used a counter that reset and chose a "sprite" of 2 blits
https://www.youtube.com/watch?v=eqhvg-39tgY

William Leue
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Location: United States
Posts: 405

Posted: 12:44pm 04 Nov 2022

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I solved it another way: I separated the image generation and management from the collision detection. The images are now just blitted from an offscreen page, and the sprites' only job is to handle collision detection.

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