====== Construction steps ======

Buildings and building parts are built step by step. The construction system is based on naming.

You can specify a prefab to be used as construction visual.

The system will parse the prefab and search for objects with a name starting with ''step_''.

All nodes called ''step_0'' (or ''step_0_anythingelse'') will be visible as soon as the building is placed.

The rest of the nodes (''step_X'' / ''step_X_anythingelse'') will become visible in order, during the construction.

If more than one node have the same order number, they inner order will be randomized. For instance ''step_2_A'', ''step_2_B'' and ''step_2_C'' will be shown in a random order. But always after ''step_1'', and always before ''step_3''.

Note that all children of a node starting with ''step_'' will be shown with there parent, no mater their name.