Add version field to campaign descriptor file.

This is used to provide a UI hint to guide players towards campaigns
that have been updated to work with the current version of the game.
All the campaigns we currently have were made for an unknown version of
the game, so they're all flagged as incompatible.

The version field is not the DCS Liberation version number because the
campaign format may change multiple times during development. Instead
the version number is a monotonically increasing integer that we
increment whenever a game change requires campaign updates.

qt_ui/windows/newgame/QCampaignList.py

@@ -4,7 +4,7 @@ import json
 import logging
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Any, Dict, List, Union
+from typing import Any, Dict, List, Optional, Union
 
 from PySide2 import QtGui
 from PySide2.QtCore import QItemSelectionModel
@@ -12,7 +12,7 @@ from PySide2.QtGui import QStandardItem, QStandardItemModel
 from PySide2.QtWidgets import QAbstractItemView, QListView
 
 import qt_ui.uiconstants as CONST
-from game.theater import ConflictTheater
+from game.theater import ConflictTheater, MizCampaignLoader
 
 PERF_FRIENDLY = 0
 PERF_MEDIUM = 1
@@ -26,6 +26,12 @@ class Campaign:
     icon_name: str
     authors: str
     description: str
+
+    #: The revision of the campaign format the campaign was built for. We do not attempt
+    #: to migrate old campaigns, but this is used to show a warning in the UI when
+    #: selecting a campaign that is not up to date.
+    version: int
+
     recommended_player_faction: str
     recommended_enemy_faction: str
     performance: Union[PERF_FRIENDLY, PERF_MEDIUM, PERF_HARD, PERF_NASA]
@@ -43,6 +49,7 @@ class Campaign:
             f"Terrain_{sanitized_theater}",
             data.get("authors", "???"),
             data.get("description", ""),
+            data.get("version", 0),
             data.get("recommended_player_faction", "USA 2005"),
             data.get("recommended_enemy_faction", "Russia 1990"),
             data.get("performance", 0),
@@ -53,6 +60,27 @@ class Campaign:
     def load_theater(self) -> ConflictTheater:
         return ConflictTheater.from_json(self.path.parent, self.data)
 
+    @property
+    def is_out_of_date(self) -> bool:
+        """Returns True if this campaign is not up to date with the latest format."""
+        return self.version < MizCampaignLoader.VERSION
+
+    @property
+    def is_from_future(self) -> bool:
+        """Returns True if this campaign is newer than the supported format."""
+        return self.version > MizCampaignLoader.VERSION
+
+    @property
+    def is_compatible(self) -> bool:
+        """Returns True is this campaign was built for this version of the game."""
+        if not self.version:
+            return False
+        if self.is_out_of_date:
+            return False
+        if self.is_from_future:
+            return False
+        return True
+
 
 def load_campaigns() -> List[Campaign]:
     campaign_dir = Path("resources\\campaigns")
@@ -73,7 +101,11 @@ class QCampaignItem(QStandardItem):
         super(QCampaignItem, self).__init__()
         self.setIcon(QtGui.QIcon(CONST.ICONS[campaign.icon_name]))
         self.setEditable(False)
-        self.setText(campaign.name)
+        if campaign.is_compatible:
+            name = campaign.name
+        else:
+            name = f"[INCOMPATIBLE] {campaign.name}"
+        self.setText(name)
 
 
 class QCampaignList(QListView):

qt_ui/windows/newgame/QNewGameWizard.py

@@ -321,7 +321,7 @@ class TheaterConfiguration(QtWidgets.QWizardPage):
         # Faction description
         self.campaignMapDescription = QTextEdit("")
         self.campaignMapDescription.setReadOnly(True)
-        self.campaignMapDescription.setMaximumHeight(100)
+        self.campaignMapDescription.setMaximumHeight(200)
 
         self.performanceText = QTextEdit("")
         self.performanceText.setReadOnly(True)