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/item_use.c

@@ -166,7 +166,7 @@ static void Task_CloseCantUseKeyItemMessage(u8 taskId)
     ClearDialogWindowAndFrame(0, TRUE);
     DestroyTask(taskId);
     ScriptUnfreezeObjectEvents();
-    ScriptContext2_Disable();
+    UnlockPlayerFieldControls();
 }
 
 u8 CheckIfItemIsTMHMOrEvolutionStone(u16 itemId)
@@ -222,7 +222,7 @@ static void ItemUseOnFieldCB_Bike(u8 taskId)
     else // ACRO_BIKE
         GetOnOffBike(PLAYER_AVATAR_FLAG_ACRO_BIKE);
     ScriptUnfreezeObjectEvents();
-    ScriptContext2_Disable();
+    UnlockPlayerFieldControls();
     DestroyTask(taskId);
 }
 
@@ -337,7 +337,7 @@ static void Task_CloseItemfinderMessage(u8 taskId)
 {
     ClearDialogWindowAndFrame(0, TRUE);
     ScriptUnfreezeObjectEvents();
-    ScriptContext2_Disable();
+    UnlockPlayerFieldControls();
     DestroyTask(taskId);
 }
 
@@ -692,8 +692,8 @@ void ItemUseOutOfBattle_Berry(u8 taskId)
 static void ItemUseOnFieldCB_Berry(u8 taskId)
 {
     RemoveBagItem(gSpecialVar_ItemId, 1);
-    ScriptContext2_Enable();
-    ScriptContext1_SetupScript(BerryTree_EventScript_ItemUsePlantBerry);
+    LockPlayerFieldControls();
+    ScriptContext_SetupScript(BerryTree_EventScript_ItemUsePlantBerry);
     DestroyTask(taskId);
 }
 
@@ -717,8 +717,8 @@ void ItemUseOutOfBattle_WailmerPail(u8 taskId)
 
 static void ItemUseOnFieldCB_WailmerPailBerry(u8 taskId)
 {
-    ScriptContext2_Enable();
-    ScriptContext1_SetupScript(BerryTree_EventScript_ItemUseWailmerPail);
+    LockPlayerFieldControls();
+    ScriptContext_SetupScript(BerryTree_EventScript_ItemUseWailmerPail);
     DestroyTask(taskId);
 }
 
@@ -738,8 +738,8 @@ static bool8 TryToWaterSudowoodo(void)
 
 static void ItemUseOnFieldCB_WailmerPailSudowoodo(u8 taskId)
 {
-    ScriptContext2_Enable();
-    ScriptContext1_SetupScript(BattleFrontier_OutsideEast_EventScript_WaterSudowoodo);
+    LockPlayerFieldControls();
+    ScriptContext_SetupScript(BattleFrontier_OutsideEast_EventScript_WaterSudowoodo);
     DestroyTask(taskId);
 }