bool is_explored(short i,short j);
void make_explored(short i,short j);
void take_explored(short i,short j);
bool is_out();
bool is_town();
bool is_combat();
bool special(short i,short j);
void flip_special(short i,short j);
void make_special(short i,short j);
void take_special(short i,short j);
bool is_web(short i,short j);
void make_web(short i,short j);
void take_web(short i,short j);
bool is_crate(short i,short j);
void make_crate(short i,short j);
void take_crate(short i,short j);
bool is_barrel(short i,short j);
void make_barrel(short i,short j);
void take_barrel(short i,short j);
bool is_fire_barrier(short i,short j);
void make_fire_barrier(short i,short j);
void take_fire_barrier(short i,short j);
bool is_force_barrier(short i,short j);
void make_force_barrier(short i,short j);
void take_force_barrier(short i,short j);
bool is_quickfire(short i,short j);
void make_quickfire(short i,short j);
void take_quickfire(short i,short j);
bool is_force_wall(short i,short j);
void make_force_wall(short i,short j);
void take_force_wall(short i,short j);
bool is_fire_wall(short i,short j);
void make_fire_wall(short i,short j);
void take_fire_wall(short i,short j);
bool is_antimagic(short i,short j);
void make_antimagic(short i,short j);
void take_antimagic(short i,short j);
bool is_scloud(short i,short j);
void make_scloud(short i,short j);
void take_scloud(short i,short j);
bool is_ice_wall(short i,short j);
void make_ice_wall(short i,short j);
void take_ice_wall(short i,short j);
bool is_blade_wall(short i,short j);
void make_blade_wall(short i,short j);
void take_blade_wall(short i,short j);
bool is_sleep_cloud(short i,short j);
void make_sleep_cloud(short i,short j);
void take_sleep_cloud(short i,short j);


bool is_small_blood(short i,short j);
bool is_medium_blood(short i,short j);
bool is_large_blood(short i,short j);
bool is_small_slime(short i,short j);
bool is_big_slime(short i,short j);
bool is_ash(short i,short j);
bool is_bones(short i,short j);
bool is_rubble(short i,short j);
void make_sfx(short i,short j, short type);
void spread_sfx(short type,short prob);