Programming Fire effects

[Lewil]

First i want to thank Phantom cause i'm really having great fun using easy CE !!! done

I'm coding some fire effects - works well, very very nice ! (tell me if you are interested by sources then i put it on ftp) i found explainations on

http://logarno.planet-d.net/djgfxfr/

the problem in that source is that i set a palet of colours, then for each pix i have to find the average of 3 or 4 other pixs. when i use getpixel, i get the real value of the pix, but not a palet index so i have to test all the values of my palet to retrieve the index wich makes it a little slow .

so here is my question: how can i quickly find the palet[index] of a pixel without testing all the palet values ???

[Lewil]

i realise that the url i gave you is in french
just look at the bottom page fire sample which looks like what i get on my ipaq.

[Phantom]

[Lewil]

[Phantom]

[Lewil]

[Phantom]

[Dan East]

Jacco, I was thinking the same thing at first. The logic is to prevent dummy[dest] from being decremented if its value is already 0.

Dan East

[MirekCz]

yeah, dan is right, else dummy will become 0-1=255 and fire effect will look like shit:)

[Phantom]

[Lewil]

done all this works fine

with the pad i control the randint test wich puts 63 or 0 to make the fire more or less intensive and the one that controls the colding (18) => you can burn your pocket the way you want

thx all, i try some water now

[laurnet]

hello
I am using MVC++ and easyce to compile on the computer ,and hey,it works!
now i can't make your fire code work because of byte undeclared and other stuff but it works well on evc

byte cannot be used ,are there lots of things that aren't same as evc or am i wrong ?

[Dan East]

Hmm. Sounds like the EasyCE header may be missing a typedef for non-CE builds? Add this to the top of the source:
#typedef unsigned char byte

Dan East

[Lewil]

i can't help cause i never succeeded to compile with MVC++ ... always saying something missing ie ptc.h even if it's in the dir ... :') evC works well, i keep on with it.

has someone some algorythm about waving a water surface (i've seen some nice effects in java on some web, when your mouse goes on a bmp, you get the little circles growing as if you were touching a water surface with your finger)

[billcow]