A method predefines a virtual staircase connecting real platforms in an XR space by: accessing a previously generated spatial mapping mesh (SMM); compiling a record from the SMM of available surfaces; identifying available platforms provided by the physical elements and available open spaces therebetween; selecting a first platform at a first level and a second platform at a significantly lower level; selecting a staircase start location at a first edge of the first platform, partly based on predetermined criteria; stacking virtual blocks linearly to form a virtual staircase, with a first virtual block contacting and extending outwards from the first platform, and a last virtual block contacting the second platform at a staircase end location; and performing a collision analysis. If the staircase end location satisfies the predetermined criteria, and if no collisions are detected, the current virtual staircase is displayed in subsequent user interactions with the XR space.