Raindrops pouring down from hydrogen powered UFO

Discussion in 'Technical & Support' started by KeiKei, Jul 1, 2019.

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I Want to Believe...

  1. Scully is still HOT!

    75.0%
  2. Big raindrops shouldn't fall down 200 km/h

    25.0%
  3. UFOs are powered by hydrogen

    0 vote(s)
    0.0%
  4. Mulder is a virgin

    0 vote(s)
    0.0%
  1. KeiKei

    KeiKei Registered

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    Howdy!

    Been driving in rain at recently released Le Mans. Road surface looks spectacular with puddles and everything - awesome work! Unfortunately visual rain effect is killing the immersion. For some reason there are two kind of raindrops visible (see attached image). Thin drops act like they should be; as vehicle speed increases raindrops start flying at you. However thick ones look like they are poured down from alien mothership flying in front of the car. It makes you think car is traveling much slower than it really is. It also feels like they're about to abduct me and my car in any second now. This is very stressful to me. Please help!
     

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    Last edited: Jul 1, 2019
  2. delapecs

    delapecs Registered

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    Sorry I don't know about the problem because I only race on shinny sun for fps performance, but Scully aged like good wine :p
     
    Akela_DE likes this.
  3. KeiKei

    KeiKei Registered

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    Have to agree with good wine thing! :D And it's also very true rain effects at current state cause quite a drop in framerate. Perhaps some optimization/simplification could help there...
     
  4. KeiKei

    KeiKei Registered

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    Found this information from Internet regarding speed of a falling raindrop:

    https://hypertextbook.com/facts/2007/EvanKaplan.shtml

    Even largest (=fastest) raindrops fall down only at around 10 meters per second (36 km/h). When vehicle is traveling 300 km/h it means raindrop hits the car at angle of around 7 degrees (formula: tan(a) = 36/300) meaning it's "originated" from slighly above horizon.

    Check attached image. Took the screen capture while game is running on accelerated physics (Ctrl+X). Miraculously raindrops seem to approach at somewhat correct angle. Could it be rF2 has programming error where thicker raindrop angle calculation is based on how fast physics are calculated and not what is actually shown to the user? That would explain what we're seeing at the moment.
     

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    Last edited: Jul 4, 2019

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