ImportCiv3.cs: Add support for loading cities in scenarios

This still has some limitations, in that it will only work if there is a
"Worker" unit. The `producible` field really should be loading from the
list of unit prototyes, but that can be done later.

C7GameData/ImportCiv3.cs

@@ -12,8 +12,7 @@
 
 namespace C7GameData {
 
-	public class Civ3ExtraInfo
-	{
+	public class Civ3ExtraInfo {
 		public int BaseTerrainFileID;
 		public int BaseTerrainImageID;
 	}
@@ -164,6 +163,7 @@ private SaveGame importBiq(string biqPath, string defaultBiqPath) {
 			ImportSharedBiqData();
 			ImportBicLeaders();
 			ImportBicUnits();
+			ImportBicCities();
 
 			Dictionary<int, Resource> resourcesByIndex = ImportCiv3Resources();
 			SetMapDimensions(biq, save);
@@ -173,7 +173,7 @@ private SaveGame importBiq(string biqPath, string defaultBiqPath) {
 			int i = 0;
 			foreach (QueryCiv3.Biq.TILE civ3Tile in biq.Tile) {
 				(int x, int y) = GetMapCoordinates(i, biq.Wmap[0].Width);
-								Civ3ExtraInfo extra = new Civ3ExtraInfo
+				Civ3ExtraInfo extra = new Civ3ExtraInfo
 				{
 					BaseTerrainFileID = civ3Tile.TextureFile,
 					BaseTerrainImageID = civ3Tile.TextureLocation,
@@ -434,6 +434,31 @@ private void ImportSavCities() {
 			}
 		}
 
+		private void ImportBicCities() {
+			BiqData theBiq = biq.Unit is null ? defaultBiq : biq;
+
+			foreach (CITY city in theBiq.City) {
+				if (city.Owner < 0 || city.Owner >= save.Players.Count) {
+					continue;
+				}
+				SavePlayer player = save.Players[city.Owner];
+				SaveCity saveCity = new SaveCity{
+					id = ids.CreateID("city"),
+					owner = player.id,
+					location = new TileLocation(city.X, city.Y),
+					// TODO: try and get this from the unit prototype
+					producible = "Worker",
+					name = city.Name,
+					size = city.Size,
+					shieldsStored = 0,
+					foodStored = 0,
+					foodNeededToGrow = 20, // HACK: don't know where to find this
+					// residents = city.Ppod // TODO: load tiles worked from PPOD
+				};
+				save.Cities.Add(saveCity);
+			}
+		}
+
 		private void ImportUnitPrototypes() {
 			PRTO[] Prto = biq.Prto ?? defaultBiq.Prto;
 			foreach (PRTO prto in Prto) {