Ducking, shooting vehicle occupants and weapon fixes

src/core/Pad.h

@@ -237,6 +237,7 @@ public:
 	bool CycleWeaponRightJustDown(void);
 	bool GetTarget(void);
 	bool TargetJustDown(void);
+	bool DuckJustDown(void);
 	bool JumpJustDown(void);
 	bool GetSprint(void);
 	bool ShiftTargetLeftJustDown(void);