Renaming Script Contexts

- Determined how the various script contexts were used and renamed accordingly.
- ScriptContext2_Enable/Disable => Lock/UnlockPlayerFieldControls - The sole purpose of the flag is to make sure the player can't move around in the overworld. It has nothing to do with script contexts.
- ScriptContext1 => ScriptContext - It is the global script context used to set up scripts which run over many frames.
- ScriptContext2_RunNewScript => RunScriptImmediately - ScriptContext2's sole purpose was to run scripts immediately and in a separate context, usually while the global context is waiting for things like map loads or screen changes.

src/start_menu.c

@@ -562,7 +562,7 @@ void ShowStartMenu(void)
         StopPlayerAvatar();
     }
     CreateStartMenuTask(Task_ShowStartMenu);
-    ScriptContext2_Enable();
+    LockPlayerFieldControls();
 }
 
 static bool8 HandleStartMenuInput(void)
@@ -763,7 +763,7 @@ void ShowBattlePyramidStartMenu(void)
     ClearDialogWindowAndFrameToTransparent(0, FALSE);
     ScriptUnfreezeObjectEvents();
     CreateStartMenuTask(Task_ShowStartMenu);
-    ScriptContext2_Enable();
+    LockPlayerFieldControls();
 }
 
 static bool8 StartMenuBattlePyramidBagCallback(void)
@@ -804,7 +804,7 @@ static bool8 SaveCallback(void)
     case SAVE_ERROR:    // Close start menu
         ClearDialogWindowAndFrameToTransparent(0, TRUE);
         ScriptUnfreezeObjectEvents();
-        ScriptContext2_Disable();
+        UnlockPlayerFieldControls();
         SoftResetInBattlePyramid();
         return TRUE;
     }
@@ -841,8 +841,8 @@ static bool8 BattlePyramidRetireCallback(void)
     case SAVE_CANCELED: // Yes (Retire from battle pyramid)
         ClearDialogWindowAndFrameToTransparent(0, TRUE);
         ScriptUnfreezeObjectEvents();
-        ScriptContext2_Disable();
-        ScriptContext1_SetupScript(BattlePyramid_Retire);
+        UnlockPlayerFieldControls();
+        ScriptContext_SetupScript(BattlePyramid_Retire);
         return TRUE;
     }
 
@@ -901,7 +901,7 @@ static void SaveGameTask(u8 taskId)
     }
 
     DestroyTask(taskId);
-    EnableBothScriptContexts();
+    ScriptContext_Enable();
 }
 
 static void HideSaveMessageWindow(void)
@@ -1378,7 +1378,7 @@ static void Task_WaitForBattleTowerLinkSave(u8 taskId)
     if (!FuncIsActiveTask(Task_LinkFullSave))
     {
         DestroyTask(taskId);
-        EnableBothScriptContexts();
+        ScriptContext_Enable();
     }
 }
 
@@ -1398,7 +1398,7 @@ static void HideStartMenuWindow(void)
     ClearStdWindowAndFrame(GetStartMenuWindowId(), TRUE);
     RemoveStartMenuWindow();
     ScriptUnfreezeObjectEvents();
-    ScriptContext2_Disable();
+    UnlockPlayerFieldControls();
 }
 
 void HideStartMenu(void)