First commit

Assets/Code/Core/GameDataState.cs

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+using Nox.Game;
+using UnityEngine;
+
+namespace Nox.Core {
+    /// <summary>
+    /// This class is meant to hold application essential gameplay state
+    /// </summary>
+    public class GameDataState {
+        public PlatformSelector platformSelector;
+        public string activeSessionId;
+        public Vector3? savedPartyPosition;
+        public GameState ActiveGameState { get; set; }
+        public PlayMode ActivePlayMode { get; set; }
+        public PartyDefinition ActiveParty { get; set; }
+
+        public PlayMode PreviousPlayMode { get; private set; }
+
+        public void ChangeGameState(GameState gameState) {
+            ActiveGameState = gameState;
+        }
+
+        public void ChangePlayMode(PlayMode playMode) {
+            if (ActiveGameState != GameState.GameMode && playMode != PlayMode.None){
+                Debug.LogError("Cannot change Game Mode state in any other Application State than ApplicationState.GameMode");
+                return;
+            }
+            PreviousPlayMode = ActivePlayMode;
+            ActivePlayMode = playMode;
+        }
+    }
+}