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I am creating a 3d game ( a car racing game) using opengl ES. i know the rendering concept and also using a physics engine for all the physics stuff. All modeling is done using 3d modeling softwares.

Now my question how to do the special effects within a game.

For example like when a car collides and toggle how to slow down all the environment effects which i saw in other available games. OR Nitrogen gas effects in a car race game.

Any suggestions will be of great help. I guess my question is clear, if not feel free to ask anything.

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4  
Unfortunately your question isn't clear at all. What do you mean when you say animation? And then you talk about graphical effects and slowing down game-time? What exactly is it you're having trouble with? –  Jannie Jan 31 '12 at 13:44
    
Ok, i am confused between animation and graphical effects. but my main criterion is regarding graphical effects. –  ab24950 Feb 1 '12 at 7:34
    
In that case I'd suggest editing your question a bit to make it clear that you're asking about graphical effects and not 3d animation, just to avoid confusion. –  Jannie Feb 1 '12 at 8:24

1 Answer 1

up vote 3 down vote accepted

how to slow down all the environment effects

This is usually done by scaling down the time. So 1 second in real time is like a 1/4 second in game time. On top of this there are appropriate sound effects, etc.

Nitrogen gas effects in a car race game

This is a completely different effect. At its most basic level you can get by with just tightening the FOV and upping the motion blur.

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thanks for the reply. do you have any link or ebook regarding this..?OR can you elaborate more on this? –  ab24950 Feb 1 '12 at 7:35
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For the latter check out this question gamedev.stackexchange.com/questions/8535/… –  Tetrad Feb 1 '12 at 18:08

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