Algodoo

Great Work!!

Than you

Interesting...

but am I missing something? The circles aren't textured.

@SE- If you're using 1.9.7b, remember that jpeg textures don't appear

No- look at the spawn code. It's a PNG texture.

It might work if you (Gear97) edited the scene and added a circle with the texture so Algodoo would stick the texture into the scene package.

Hmm... I'm trying to reverse-engineer your smoke. First I tried throwing formulas into the original spawn code:
scene.addCircle({
pos := e.pos;
controllerAcc := sim.time;
color := {[0, 0, 0, 1-(sim.time - controllerAcc)]}
})
but the color only changes until the next circle spawns.
In the full code, with lots and lots of other stuff in it, only the very first circle changes its color, regardless of the presence of later circles.

I then took a closer look at your code, and I got this:
(scene.addCircle({
pos := e.pos;
controllerAcc := sim.time
})) -> {color = {[0, 0, 0, 1-(sim.time - controllerAcc)]}}

and it works fine.
However, in the full code, the spawned circle never appears.

*experimentation*

Ah, now I got it to work. Thanks for the code- I never would've gotten it otherwise.

Also, can you tell me exactly what the () -> {} thing does? I've been wondering about that for a few seconds now...

Let me guess- the parentheses contain a definition or identifier of a particular scope (e.g. scene.addCircle({}), scene.my). The brackets contain identifiers and values that will be added to the predefined scope, or changed if they already exist.