Add tyre spray and smoke effect (fix #143)

[hbeni]

Fix #240 (duplicate issue)
Fix #143

• wheel spray effect
• tyre smoke effect canceled, not for cessna
  Edit:
• prop spray effect (when wet surfaces)
• prop dust effect (on dry surfaces)

[HHS81]

There is no tyre smoke on a real Cessna landing. To less speed on touchdown

[hbeni]

spray and smoke working (default implementation)

(it rains cats and dogs here, but rainfall not visible on image):

A little rough landig at good weather:

[HHS81]

Sorry, but that doesn't look realistic. Have you ever seen a little cessna producing so much smoke like a big airliner? There is no tyre smoke on real landing. Can't be, to less speed on touchdown.

And even while raining it is too much. And framerates.... 😑

[hbeni]

@HHS81 thanks for the feedback, i just tought i quickly implement this with the hints on the wiki.
i notice no performance hit, but i didn't check numbers either.

Should i investigate how to tune the water-spray effect down and remove the smoke alltogether?
Or should we leave that feature alone?

[hbeni]

I removed smoke and tuned down the spray; how is this now?

[hbeni]

just measured it. Driving along in rain with the patch is about 21-23FPS here (and my machine is rather old), doing the same at the same rainy weather on master is 22-23; so a little faster at the lower band.
What numbers do you get?

[HHS81]

still a lot of work until it is ready

[hbeni]

still a lot of work until it is ready

@HHS81 Hi Heiko, what exactly is missing / should be adjusted? (i think it looks good already)
If i have time the next few weeks i maybe can finish this off (we should not wait for the next fgaddon release i think; but maybe the current state is already mergeable enough for you; then i will fix the conflicts shortly)