Thread: Mouse problems

Two useful functions in the Win32 API are GetCursorPos and SetCursorPos.

Why not try this: Get the x diff and y diff from the current cursor position and the center of the screen. Then use this to determine how much to rotate about the two axis. Then at the end of the function set the cursor to the center of the screen. This way you will never reach the problem you described because every time the function is called the distance from center is measured and then it is reset back to center. Give it a try I think you will be happy with it.

All you need to do is make your camera movement's offsets on x and y directly proportional to how far the mouse is from the center of the screen.

Code:

 
//Get current position
Mouse.Update();
 
//Clamp in value only - does not actually move the mouse cursor
if (Mouse.x>=WIDTH) Mouse.x=WIDTH;
if (Mouse.y>=HEIGHT) Mouse.y=HEIGHT;
if (Mouse.x<=0) Mouse.x=0;
if (Mouse.y<=0) Mouse.y=0;
 
//Compute speed based on distance from center of screen, frame time, and modifier
CameraSpeed.x=(Mouse.x-ScreenCenter.x)*frameTime*SomeCoefficient;
CameraSpeed.y=(Mouse.y-ScreenCenter.y)*frameTime*SomeCoefficient;
 
::SetCursorPos(Mouse.x,Mouse.y);