Skip the playthrough when run from the gui, if the spoiler isn't being created.

Gui.py

@@ -459,6 +459,7 @@ def guiMain(args=None):
         guiargs.heartcolor = heartcolorVar.get()
         guiargs.fastmenu = fastMenuVar.get()
         guiargs.create_spoiler = bool(createSpoilerVar.get())
+        guiargs.skip_playthrough = not bool(createSpoilerVar.get())
         guiargs.suppress_rom = bool(suppressRomVar.get())
         guiargs.openpyramid = bool(openpyramidVar.get())
         guiargs.mapshuffle = bool(mapshuffleVar.get())

Main.py

@@ -209,6 +209,10 @@ def main(args, seed=None):
     if args.create_spoiler and not args.jsonout:
         world.spoiler.to_file(output_path('%s_Spoiler.txt' % outfilebase))
 
+    # if we only check for beatable, we can do this sanity check first before writing down spheres
+    if not world.can_beat_game():
+        raise RuntimeError('Cannot beat game. Something went terribly wrong here!')
+
     if not args.skip_playthrough:
         logger.info('Calculating playthrough.')
         create_playthrough(world)
@@ -350,10 +354,6 @@ def create_playthrough(world):
     old_world = world
     world = copy_world(world)
 
-    # if we only check for beatable, we can do this sanity check first before writing down spheres
-    if not world.can_beat_game():
-        raise RuntimeError('Cannot beat game. Something went terribly wrong here!')
-
     # get locations containing progress items
     prog_locations = [location for location in world.get_filled_locations() if location.item.advancement]
     state_cache = [None]