Started moving single player campaign logic to an abstract CampaignMode class to make it reusable in the eventual multiplayer campaign

Barotrauma/BarotraumaShared/Source/GameSession/GameModes/CampaignMode.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Xml.Linq;
+
+namespace Barotrauma
+{
+    abstract class CampaignMode : GameMode
+    {
+        public readonly CargoManager CargoManager;
+
+        const int InitialMoney = 10000;
+
+        protected Map map;
+        public Map Map
+        {
+            get { return map; }
+        }
+
+        public override Mission Mission
+        {
+            get
+            {
+                return Map.SelectedConnection.Mission;
+            }
+        }
+
+        private int money;
+        public int Money
+        {
+            get { return money; }
+            set { money = Math.Max(value, 0); }
+        }
+
+        public CampaignMode(GameModePreset preset, object param)
+            : base(preset, param)
+        {
+            Money = InitialMoney;
+            CargoManager = new CargoManager();            
+        }
+
+        public void GenerateMap(string seed)
+        {
+            map = new Map(seed, 1000);
+        }
+
+        protected List<Submarine> GetSubsToLeaveBehind(Submarine leavingSub)
+        {
+            //leave subs behind if they're not docked to the leaving sub and not at the same exit
+            return Submarine.Loaded.FindAll(s =>
+                s != leavingSub &&
+                !leavingSub.DockedTo.Contains(s) &&
+                (s.AtEndPosition != leavingSub.AtEndPosition || s.AtStartPosition != leavingSub.AtStartPosition));
+        }
+
+        public override void End(string endMessage = "")
+        {
+            base.End(endMessage);
+        }
+
+        public abstract void Save(XElement element);
+    }
+}

Barotrauma/BarotraumaShared/Source/GameSession/GameModes/GameModePreset.cs

@@ -34,7 +34,7 @@ namespace Barotrauma
         public static void Init()
         {
 #if CLIENT
-            new GameModePreset("Single Player", typeof(SinglePlayerMode), true);
+            new GameModePreset("Single Player", typeof(SinglePlayerCampaign), true);
             new GameModePreset("Tutorial", typeof(TutorialMode), true);
 #endif
 

Barotrauma/BarotraumaShared/Source/GameSession/GameModes/MultiplayerCampaign.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Xml.Linq;
+
+namespace Barotrauma
+{
+    class MultiplayerCampaign : CampaignMode
+    {
+        public MultiplayerCampaign(GameModePreset preset, object param) : 
+            base(preset, param)
+        {
+        }
+
+        public override void Save(XElement element)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}