_init_saves_dir(dir)
Initializes the saves directory location for the current run (does not create the directory yet). Apps should never call it - it is called by the app loader. The saves API will only work if this was called first. It cannot be called again before machine is reset.
Parameters:
dir
[value: e.g. "Saves/Games/MyGame", type: str]
Return Value: None
file: src/save/engine_save_module.c