pub unsafe extern "C" fn gravity_map_append_map(
vm: *mut gravity_vm,
map1: *mut gravity_map_t,
map2: *mut gravity_map_t,
)pub unsafe extern "C" fn gravity_map_append_map(
vm: *mut gravity_vm,
map1: *mut gravity_map_t,
map2: *mut gravity_map_t,
)