Added Zematus#310

New button "Restart World" in the main menu deletes basically everything (I dont know if I am missing something) and the user returns to mode selection. The button cannot be pressed in editor mode. Saving and loading work and the simulation seems to work seemlessly fine after resetting. Had to change UnsetNeighborProminencesFromGroup() in PolityProminence so all groups could be deleted at once

Assets/Scripts/2D/GuiManagerScript.cs

@@ -1695,6 +1695,18 @@ private void RegenerateWorld(GenerationType type)
         _regenMapOverlayTexture = true;
     }
 
+    public void ResetWorld()
+    {
+        Manager.ResetWorld();
+
+        MainMenuDialogPanelScript.SetVisible(false);
+        //AddPopulationDialogScript.SetVisible(true);
+        _hasToSetInitialPopulation = true;
+        /* OpenModeSelectionDialogRequested.Invoke();
+        InterruptSimulation(true); */
+        OpenModeSelectionDialog();
+    }
+
     private void GenerateWorld(bool randomSeed = true, int seed = 0, bool useHeightmap = false)
     {
         if (randomSeed)

Assets/Scripts/WorldEngine/Manager.cs

@@ -1441,6 +1441,11 @@ public static void GenerateNewWorldAsync(int seed, Texture2D heightmap = null, P
         });
     }
 
+    public static void ResetWorld()
+    {
+        CurrentWorld.ResetWorld();
+    }
+
     public static void RegenerateWorld(GenerationType type)
     {
         WorldIsReady = false;

Assets/Scripts/WorldEngine/Polities/Polity.cs

@@ -418,6 +418,8 @@ public void Destroy()
             World.AddGroupToPostUpdate_AfterPolityUpdate(group);
         }
 
+        Territory = null;
+
         Info.Polity = null;
 
         StillPresent = false;

Assets/Scripts/WorldEngine/Polities/PolityProminence.cs

@@ -534,7 +534,7 @@ private void UnsetNeighborProminencesFromGroup(CellGroup group)
     {
         foreach (PolityProminence p in group.GetPolityProminences())
         {
-            if (p == this)
+            if (p == this||!NeighborProminences.Contains(p))
             {
                 continue;
             }

Assets/Scripts/WorldEngine/World.cs

@@ -3249,6 +3249,84 @@ public void ModifyCellLayerData(TerrainCell cell, float valueOffset, string laye
         Manager.ActiveEditorBrushAction.AddCellAfterModification(cell);
     }
 
+    public void ResetWorld(){
+        CurrentDate = 0;
+        int sizeX = Width;
+        int sizeY = Height;
+
+        List<Territory> _territoriesToRemove = new List<Territory>();
+
+        for (int i = 0; i < sizeX; i++)
+        {
+            for (int j = 0; j < sizeY; j++)
+            {
+                if (TerrainCells[i][j].Group!=null)
+                {
+                    AddGroupToRemove(TerrainCells[i][j].Group);
+                }
+
+                Territory EncompassingTerritory = TerrainCells[i][j].EncompassingTerritory;
+
+                if (EncompassingTerritory != null)
+                {
+                    if (!_territoriesToRemove.Contains(EncompassingTerritory))
+                    {
+                        _territoriesToRemove.Add(EncompassingTerritory);
+                    }
+                    EncompassingTerritory.SetCellToRemove(TerrainCells[i][j]);
+                    EncompassingTerritory.RemoveCells();
+                }
+            }
+        }
+
+        foreach (var t in _territoriesToRemove)
+        {
+            t.RemoveCells();
+        }
+
+        RemoveGroups();
+
+        //Regions have to be removed after the territories
+        for (int i = 0; i < sizeX; i++)
+        {
+            for (int j = 0; j < sizeY; j++)
+            {
+                if (TerrainCells[i][j].Region != null)
+                {
+                    TerrainCells[i][j].Region = null;
+                }
+            }
+        }
+
+        foreach (Polity p in GetActivePolities())
+        {
+            AddPolityToRemove(p);
+        } 
+
+        RemovePolities();
+
+        //Not sure if all of this is necessary or if theres something missing:
+        _factionsToUpdate.Clear();
+        _factionsToRemove.Clear();
+        _politiesToUpdate.Clear();
+
+        _languages.Clear();
+        LanguageCount = 0;
+        _regionInfos.Clear();
+        RegionCount = 0;
+        _polityInfos.Clear();
+        PolityCount = 0;
+        _factionInfos.Clear();
+        FactionCount = 0;
+
+        CulturalKnowledgeInfoList.Clear();
+        _culturalKnowledgeIdList.Clear();
+        ExistingDiscoveries.Clear();
+        ExistingDiscoveryIds.Clear();
+        _eventMessageIds.Clear();
+        _eventMessagesToShow.Clear();
+    }
+
     private void GenerateTerrainAltitude()
     {
         int sizeX = Width;
@@ -5008,4 +5086,6 @@ private float CalculateTemperature(float value)
 
         return temperature;
     }
+
+
 }

random worlds notes.txt

@@ -41,3 +41,7 @@ group: The "group" of people inhabiting a cell
 culture: A groups skills, knowledge, discoveries, activities and preferences are part of their culture
 
 agents: clan leaders
+
+Polity: state
+
+Territory: Area of a polity