Fix the mouse so that it's discrete and one click means on action.

gui_fsm.hpp

@@ -68,11 +68,10 @@ namespace gui {
       void END(Event ev);
 
       void try_move(int dir, bool strafe);
-      void keyboard();
+      void keyboard_mouse();
       void draw_gui();
       void draw_blood();
       void render();
-      void mouse();
       void generate_map();
       bool active();
       void run_systems();