HistoryList locks GlobalExplorer to be non-functional when switching between saves

[GMNGjoy]

Steps to reproduce

1. Load new save on Elm Creek
2. Open GlobalExplorer, navigate around deep into the productionPoints list the last selection being g_currentMission.productionChainManager.productionPoints[10]
3. Your history should look something like this:

   <historyList>
   <historyItem name="g_currentMission.productionChainManager.productionPoints[10]"/>
   <historyItem name="g_currentMission.productionChainManager.productionPoints"/>
   <historyItem name="g_currentMission.productionChainManager"/>
   <historyItem name="g_currentMission"/>
   </historyList>

4. Close that savegame, open a new savegaeme on a simple map, ie: NoMansLand
5. Open GlobalExplorer again

Expected

history to be flushed because I'm not on the same savegame

Actual

Global Explorer opens with the last history item, but since that item doesn't exist in the current global object tree - the UI hangs, with the only option to exit. There is no cursor, no means of selecting anything, no means of clearing the input.

Manual Fix

Opening the config file at modSettings/FS22_GlobalExplorer/history.xml, and deleting all non-valid (on the new map) history items and re-launching the game fixes the issue.

<historyList>
    <historyItem name="g_currentMission"/>
</historyList>

Suggestions

• Possibly make the "history" savegame specific
• Possibly add a keybind or button to "clear" the history
• Automatically clear the history on using the mod in a different savegame
• Confirm that history items exist in the current game's tree before showing them to the user in the history; ie: on step 5, check each of the history items, if that path doesn't exist, remove it from the history.

[Rianilothe]

Thanks for the verbose bug report. I think validating the history items when they're loaded is the best solution. I have a few other tweaks I'll be adding to the next release. Thanks again!