ref: 38de7eaca1fa15e005bc0065adc7019dfaedae38
dir: /input.h/
// input.h -- external (non-keyboard) input devices void IN_Init (void); void IN_Shutdown (void); void IN_Commands (void); // oportunity for devices to stick commands on the script buffer void IN_Move (usercmd_t *cmd); // add additional movement on top of the keyboard move cmd void IN_ClearStates (void); // restores all button and position states to defaults void IN_Grabm (int on); // grab or ungrab mouse