sprite trajectory (10deg, 20deg,30deg)

I use a simple method of spreading function calls out in the main loop e.g.

gFrame=0

;main loop
While Not KeyHit(1)

gFrame=(gFrame+1) Mod 100

If gFrame Mod 2=0 Then Update_AI() ;call every 2 frames
If gFrame Mod 4=0 Then Update_Physics() ;call every 4 frames
If gFrame Mod 10=0 Then Update_Rooms() ;call every 10 frames

Wend