Function tcod_sys::TCOD_map_compute_fov

pub unsafe extern fn TCOD_map_compute_fov(map: TCOD_map_t,
                                          player_x: c_int,
                                          player_y: c_int,
                                          max_radius: c_int,
                                          light_walls: _bool,
                                          algo: TCOD_fov_algorithm_t)