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.