The games that do that seemless loading of levels and such only load in a little at a time...
It can be done in Blitz, but it ain't going to happen (be smooth and seemless) useing the Blitz loadmesh, loadtexture functions...meaning you will likely have to generate your own mesh and texture file formats and read them byte by byte per gameupdate...then use the Blitz addvertex, add triangle type stuff to slowly model the new areas as the game is running...actually a better way would be to just move unseen verticies and triangles (mesh deformation) as even the Blitz freemesh function can cause the program to stall...
Still you will need to code up some sort of texture resource system (as load and free texture would also cause the program to stall)...so instead of freeing unused textures you game would just change them (writepixelfast a few bytes at a time)to make them into new textures and such...
It can be done in Blitz, but it ain't going to happen (be smooth and seemless) useing the Blitz loadmesh, loadtexture functions...meaning you will likely have to generate your own mesh and texture file formats and read them byte by byte per gameupdate...then use the Blitz addvertex, add triangle type stuff to slowly model the new areas as the game is running...actually a better way would be to just move unseen verticies and triangles (mesh deformation) as even the Blitz freemesh function can cause the program to stall...
Still you will need to code up some sort of texture resource system (as load and free texture would also cause the program to stall)...so instead of freeing unused textures you game would just change them (writepixelfast a few bytes at a time)to make them into new textures and such...