I recommend just improvising. My take is, you will probably want some sort of general camera direction (in the horizontal plane) and a pointer direction where you're aiming (can rotate on the screen within the view).
You should be using gluLookAt(camx,camy,camz,centerx,centery,centerz,upx,up,y,upz). [camx,camy,camz] is simply the player's position in 3D space. [centerx,centery,centerz] is [camx,camy,camz] + ([1,0,0], rotated by the player's direction around [0,1,0]). [upx,upy,upz] is [0,1,0]. To find where the cursor is pointing, project the mouse into the 3D scene. This gives you a view controlled by the player's direction, and a movable aiming point inside. If you want where you're aiming to be the center of the screen, rotate the view by the relative mouse movement. Ian
