saving every thing in game chache

[winter twilight]

I am making RTS campaign which i want to make chapters have conected maps like this picture:

The Title

being campaign is not a point but when it is so player builds things which are
unpredictable it is not just 1 or 5 hero. is it possible and how ?

 

[Daffa]

You'll need a big cache and have them all stored in the data if you were to maintain every piece of building and unit in the map between transitions.

 

[Freddyk]

You should study Rexxar campaign to see how it's done.
Actually only the hero (or all the travelers if they are more than one) is saved in the cache, maps are saved using save/load.

The process is the following:
- hero leaves map A
...... - hero is saved to cache
...... - hero is removed from map
...... - map A is saved in special folder (look at rexxar campaign for details)
...... - transition to map B :
............ - map B previous savegame is loaded from special folder, if it exists
............ - or map B is initialized if hero travels here for the 1st time
- map B is loaded
...... - hero is created from cache at arrival point