Avoid function declarator with no prototype errors

This is for SDCC 4.4.0 at least.

1 files changed, 6 insertions, 6 deletions

diff --git a/game/src/game.h b/game/src/game.h
index 5f5d603..1354522 100644
--- a/game/src/game.h
+++ b/game/src/game.h
@@ -80,16 +80,16 @@ struct entity
     uint8_t flags;
     uint8_t delay;
     uint8_t frame;
-    void (*update)();
+    void (*update)(void);
 };
 
-void run_game();
+void run_game(void);
 
-void update_player();
-void update_enemy();
+void update_player(void);
+void update_enemy(void);
 
-void draw_map();
-void draw_hud();
+void draw_map(void);
+void draw_hud(void);
 
 void erase_battery(uint8_t x, uint8_t y);