Hi,

 

I have another question. How do I introduce game physics into the program code?

You'll have to be more specific. The answer to your question is "via keyboard"...

 

First you have to know which physical law you want to implement. Then, depending on the program, you implement it. For example, here is the pseudocode of a way to introduce gravitation movement in a number of objects:

 

For every Object 0 to x
 For every object ahead of CurObject //In the list of objects
   Acceleration = NewtGravConst * NxtObject.mass / DistanceBetween[CurObject, NxtObject[math]]^2[/math]
   Velocity = Acceleration * DeltaTime
    Displacement = Velocity * DeltaTime
 EndLoop
EndLoop

Ok, thanks for the info. But I have another question: If I created a three-dimensional object with photoshop, how do I add that object or image into the program code?

I can't tell you that, but I can tell you that Photoshop is not a modeling program... 3DSMax, or Maya are.