odd smoke spread

[kurja]

See screenshot; a smoke nade generated about 1 square worth of smoke (bottom of screen), second one a bit more but with a tunnel (?) through the middle (middle in the screenshot). Smoke nades during previous and later turns worked as expected.

[H-Hour]

The smoke may actually be there but not appear. This is due to the fact that the smoke grenades cause errors by exceeding our max particle allowance and so throwing more than one smoke grenade can easily result in the game failing to render some smoke particles. It's annoying, but will be fixed eventually.

See bug #2764.

[Charlie]

In the meanwhile you can edit ufoai/base/ufos/ptl_misc.ufo, find "particle smokefield" and change tps from 50.0 to something low, say 3.0. Smoke will not look as dense but still perfectly playable.

[kurja]

and this will render help to render the "missing" smoke?

[Charlie]

It will render less particles, so if the problem is that your game generates too many of them this should work around the problem.

[kurja]

same seems to happen with gas grenades, would that be "particle green_smoke" particle?

[DarkRain]

Yes stun grenades are using the green_smoke particle (but they should probably get their own particle some time)