make skippable decorator not always save state

There are some runs where the "skippable" decorator should not save the
state of the game before and after, like if the function is given
different parameters and the after state should not be the canonical
after state.

pokemontools/vba/autoplayer.py

@@ -19,11 +19,16 @@ def skippable(func):
     def wrapped_function(*args, **kwargs):
         self = args[0]
         skip = True
+        override = True
 
         if "skip" in kwargs.keys():
             skip = kwargs["skip"]
             del kwargs["skip"]
 
+        if "override" in kwargs.keys():
+            override = kwargs["override"]
+            del kwargs["override"]
+
         # override skip if there's no save
         if skip:
             full_name = func.__name__ + "-end.sav"
@@ -33,9 +38,13 @@ def skippable(func):
         return_value = None
 
         if not skip:
-            self.cry.save_state(func.__name__ + "-start", override=True)
+            if override:
+                self.cry.save_state(func.__name__ + "-start", override=override)
+
             return_value = func(*args, **kwargs)
-            self.cry.save_state(func.__name__ + "-end", override=True)
+
+            if override:
+                self.cry.save_state(func.__name__ + "-end", override=override)
         elif skip:
             self.cry.vba.state = self.cry.load_state(func.__name__ + "-end")
 
@@ -81,7 +90,7 @@ class SpeedRunner(Runner):
         self.new_bark_level_grind(10, skip=False)
 
     @skippable
-    def skip_intro(self):
+    def skip_intro(self, stop_at_name_selection=False):
         """
         Skip the game boot intro sequence.
         """
@@ -124,6 +133,9 @@ class SpeedRunner(Runner):
         # read text until name selection
         self.cry.text_wait()
 
+        if stop_at_name_selection:
+            return
+
         # select "Chris"
         self.cry.vba.press("d", hold=10, after=1)
         self.cry.vba.press("a", hold=50, after=1)