[store_map_dimensions]
        [/store_map_dimensions]

        {VARIABLE pos.x "$($map_size.x + 1)"}

        [while]
            {VARIABLE_NUMERICAL_GREATER_OR_EQUAL_THAN pos.x 0}
            [do]
                {VARIABLE pos.y "$($map_size.y + 1)"}

                [while]
                    {VARIABLE_NUMERICAL_GREATER_OR_EQUAL_THAN pos.y 0}
                    [do]
                        {RANDOM (1..3)}

                        [item_fast]
                            x,y=$pos.x,$pos.y
                            halo="terrain/fog/fog$random|.png~O(60%)"
                        [/item_fast]

                        {VARIABLE_DEC pos.y}
                    [/do]
                [/while]

                {VARIABLE_DEC pos.x}
            [/do]
        [/while]

        {CLEAR_VARIABLE pos,random,map_size}