#include "bd_cave.h"
-/* the game itself */
+// the game itself
+boolean is_player(const GdCave *cave, const int x, const int y);
+boolean can_be_pushed_dir(const GdCave *cave, const int x, const int y, const GdDirection dir);
GdDirection gd_direction_from_keypress(boolean up, boolean down, boolean left, boolean right);
void gd_cave_iterate(GdCave *cave, GdDirection player_move, boolean player_fire, boolean suicide);
void set_initial_cave_speed(GdCave *cave);