-extern void DrawBox(int x1, int y1, int x2, int y2);
-extern void DrawField(int scr);
-extern void InitFields(void);
-static void DisplayMessage(char *p);
-extern void Messagef(char *fmt, ...);
-extern void Messagetype(char c, int x, char *s);
-extern void PlotBlock(int scr, int y, int x, unsigned char type);
-extern void PlotBlockXY(int y, int x, unsigned char type);
-extern void ShowScore(int scr, struct _Score score);
-extern void FieldMessage(int playa, char *message);
-extern void ShowPause(int playa);
-extern void ShowTime(void);
+static void window_border(int x1, int y1, int x2, int y2);
+extern void window_draw(int player);
+extern void screen_setup(void);
+static void msg_draw(char *p);
+extern void msg_add(char *fmt, ...);
+extern void msg_add_char(char c, int x, char *s);
+extern void block_draw_window(int player, int y, int x, unsigned char type);
+extern void block_draw_status(int y, int x, unsigned char type);
+extern void status_draw(int player, struct score_t score);
+extern void window_msg(int player, char *message);
+extern void window_msg_status(int player);
+extern void status_tick(void);