🚀 go-pugleaf

I'm assuming you're thinking of the fire demo's that were very popular
with assembler programers a few years ago. The fire is created by seeding
the bottom row of a an image buffer with random values. The pixels are
then recalculated for each frame to create the effect of flames.

The algorithm for recalculating a pixel is, if I remember correctly it was
a few years since I did it. The new value of a pixel is the average of
itself and the three pixels on the row below it minus one. as shown in the
tacky text diagram below:

| -- | A | -- |
| B | C | D |

the new value of pixel A is ((A+B+C+D)/4)-1
The only exception to this will be for the first and last columns of
pixels on the image. These can either be ignored, referenced but never
set, or you can wrap the image.

I hope this all makes sense, if you have any more questions feel free to
ask.

Pete Blacker


cafefinal wrote:

> Hello !
> I wish to create a Fire applet for my class project. Please if someone
> could show me an algorithm to do the task. I do thanks in advance. :)
>
> - Lakra