explain syntax

Could someone explain to me this syntax?

Code:

      shapenum = weaponscale[gamestate.weapon]*2-SPR_KNIFEREADY+gamestate.weaponframe;
      bufferofs+=((viewheight+1)/4)*80;
      SimpleScaleShape(viewwidth*3/8,shapenum,(viewheight+1)/2);
      SimpleScaleShape(viewwidth*5/8,shapenum+1,(viewheight+1)/2);
      bufferofs-=((viewheight+1)/4)*80;

/I would make hires sprites(1280x896).

YOU ARE CRAZY???


the engine does not support 1280x896 sprites !!!!!!
You would have to make a new graphics engine,also you would have to put in a resolution higher than that of the sprites and if this game is in mode software render = runing very slowly ...