Function Physics_SetMaskBit

engine/gamesys/src/gamesys/scripts/script_physics.cpp:1265–1282

updates the mask of a collision object * * Sets or clears the masking of a group (maskbit) in a collision object. * * @name physics.set_maskbit * @param url [type:string|hash|url] the collision object to change the mask of. * @param group [type:string] the name of the group (maskbit) to modify in the mask. * @param maskbit [type:boolean] boolean value of the new

     * ```
     */
    static int Physics_SetMaskBit(lua_State* L)
    {
        DM_LUA_STACK_CHECK(L, 0);

        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 = dmScript::CheckBoolean(L, 3);

        if (! dmGameSystem::SetCollisionMaskBit(comp_world, comp, group_id, boolvalue)) {
            return luaL_error(L, "Collision group not registered: %s.", dmHashReverseSafe64(group_id));
        }

        return 0;
    }

    /*# checks the presense of a group in the mask (maskbit) of a collision object
     *