Function Physics_GetMaskBit

engine/gamesys/src/gamesys/scripts/script_physics.cpp:1301–1317

checks the presense of a group in the mask (maskbit) of a collision object * * Returns true if the specified group is set in the mask of a collision * object, false otherwise. * * @name physics.get_maskbit * @param url [type:string|hash|url] the collision object to check the mask of. * @param group [type:string] the name of the group to check for. * @return

     * ```
     */
    static int Physics_GetMaskBit(lua_State* L)
    {
        DM_LUA_STACK_CHECK(L, 1);

        dmGameObject::HCollection collection = dmGameObject::GetCollection(CheckGoInstance(L));
        CollisionComponent* comp = 0x0;
        CollisionWorld* comp_world = 0x0;
        GetCollisionObject(L, 1, collection, &comp, &comp_world);
        dmhash_t group_id = dmScript::CheckHashOrString(L, 2);

        bool boolvalue;
        if (! dmGameSystem::GetCollisionMaskBit(comp_world, comp, group_id, &boolvalue)) {
            return luaL_error(L, "Collision group not registered: %s.", dmHashReverseSafe64(group_id));
        }
        lua_pushboolean(L, (int) boolvalue);
        return 1;
    }

    /*#
     * @name physics.SHAPE_TYPE_SPHERE