Submarines, items and characters that reach a depth of 300,000 units (~4000 m) are automatically disabled. Avoids the unnecessary cost of updating entities that are way too deep to be reached by anyone.

Barotrauma/BarotraumaClient/Source/Camera.cs

@@ -139,12 +139,17 @@ namespace Barotrauma
 
             if (Level.Loaded != null && clampPos)
             {
-                position.Y -= Math.Max(worldView.Y - Level.Loaded.Size.Y, 0.0f);
+                float maxY = Level.Loaded.Size.Y + 100;
-                interpolatedPosition.Y -= Math.Max(worldView.Y - Level.Loaded.Size.Y, 0.0f);
 
-                worldView.Y = Math.Min((int)Level.Loaded.Size.Y, worldView.Y); 
+                position.Y              -= Math.Max(worldView.Y - maxY, 0.0f);
+                interpolatedPosition.Y  -= Math.Max(worldView.Y - maxY, 0.0f);
+
+                position.Y              = Math.Max(position.Y, (int)Level.MaxCameraDepth);
+                interpolatedPosition.Y  = Math.Max(interpolatedPosition.Y, (int)Level.MaxCameraDepth);
+                worldView.Y             = MathHelper.Clamp(worldView.Y, (int)Level.MaxCameraDepth, (int)maxY);
             }
 
+
             transform = Matrix.CreateTranslation(
                 new Vector3(-interpolatedPosition.X, interpolatedPosition.Y, 0)) *
                 Matrix.CreateScale(new Vector3(interpolatedZoom, interpolatedZoom, 1)) *

Barotrauma/BarotraumaClient/Source/Map/Submarine.cs

@@ -39,7 +39,7 @@ namespace Barotrauma
 
             if (GameMain.DebugDraw)
             {
-                foreach (Submarine sub in Submarine.Loaded)
+                foreach (Submarine sub in Loaded)
                 {
                     Rectangle worldBorders = sub.Borders;
                     worldBorders.Location += sub.WorldPosition.ToPoint();

Barotrauma/BarotraumaClient/Source/Screens/GameScreen.cs

@@ -68,7 +68,7 @@ namespace Barotrauma
         
         public override void Draw(double deltaTime, GraphicsDevice graphics, SpriteBatch spriteBatch)
         {
-            cam.UpdateTransform(true);
+            cam.UpdateTransform(true, !GameMain.DebugDraw);
             Submarine.CullEntities(cam);
 
             DrawMap(graphics, spriteBatch);
@@ -88,11 +88,11 @@ namespace Barotrauma
             {
                 for (int i = 0; i < Submarine.MainSubs.Length; i++)
                 {
-                    if (Submarine.MainSubs[i] != null)
+                    if (Submarine.MainSubs[i] == null) continue;
-                    {
+                    if (Level.Loaded != null && Submarine.MainSubs[i].WorldPosition.Y < Level.MaxEntityDepth) continue;
-                        Color indicatorColor = i == 0 ? Color.LightBlue * 0.5f : Color.Red * 0.5f;
+                    
-                        DrawSubmarineIndicator(spriteBatch, Submarine.MainSubs[i], indicatorColor);
+                    Color indicatorColor = i == 0 ? Color.LightBlue * 0.5f : Color.Red * 0.5f;
-                    }
+                    DrawSubmarineIndicator(spriteBatch, Submarine.MainSubs[i], indicatorColor);                    
                 }
             }
 

Barotrauma/BarotraumaShared/Source/Characters/Character.cs

@@ -1333,6 +1333,14 @@ namespace Barotrauma
 
             if (!Enabled) return;
 
+            if (Level.Loaded != null && WorldPosition.Y < Level.MaxEntityDepth ||
+                (Submarine != null && Submarine.WorldPosition.Y < Level.MaxEntityDepth))
+            {
+                Enabled = false;
+                Kill(CauseOfDeath.Pressure);
+                return;
+            }
+
             PreviousHull = CurrentHull;
             CurrentHull = Hull.FindHull(WorldPosition, CurrentHull, true);
             //if (PreviousHull != CurrentHull && Character.Controlled == this) Hull.DetectItemVisibility(this); //WIP item culling

Barotrauma/BarotraumaShared/Source/Items/Item.cs

@@ -779,6 +779,12 @@ namespace Barotrauma
 
         public override void Update(float deltaTime, Camera cam)
         {
+            if (Level.Loaded != null && WorldPosition.Y < Level.MaxEntityDepth)
+            {
+                Spawner.AddToRemoveQueue(this);
+                return;
+            }
+
             ApplyStatusEffects(ActionType.Always, deltaTime, null);
 
             foreach (ItemComponent ic in components)

Barotrauma/BarotraumaShared/Source/Map/Levels/Level.cs

@@ -14,6 +14,10 @@ namespace Barotrauma
 {
     partial class Level
     {
+        //all entities are disabled after they reach this depth
+        public const float MaxEntityDepth = -300000.0f;
+        public const float MaxCameraDepth = -290000.0f;
+
         public const float ShaftHeight = 1000.0f;
         
         public static Level Loaded

Barotrauma/BarotraumaShared/Source/Map/Submarine.cs

@@ -414,15 +414,17 @@ namespace Barotrauma
         public static void CullEntities(Camera cam)
         {
             HashSet<Submarine> visibleSubs = new HashSet<Submarine>();
-            foreach (Submarine sub in Submarine.Loaded)
+            foreach (Submarine sub in Loaded)
             {
+                if (sub.WorldPosition.Y < Level.MaxEntityDepth) continue;
+
                 Rectangle worldBorders = new Rectangle(
                     sub.Borders.X + (int)sub.WorldPosition.X - 500,
                     sub.Borders.Y + (int)sub.WorldPosition.Y + 500,
                     sub.Borders.Width + 1000,
                     sub.Borders.Height + 1000);
 
-                if (Submarine.RectsOverlap(worldBorders, cam.WorldView))
+                if (RectsOverlap(worldBorders, cam.WorldView))
                 {
                     visibleSubs.Add(sub);
                 }
@@ -682,9 +684,34 @@ namespace Barotrauma
         {
             //if (PlayerInput.KeyHit(InputType.Crouch) && (this == MainSub)) FlipX();
 
-            if (Level.Loaded == null) return;
+            if (Level.Loaded == null || subBody == null) return;
 
-            if (subBody == null) return;
+            if (WorldPosition.Y < Level.MaxEntityDepth &&
+                subBody.Body.Enabled && 
+                (GameMain.NetworkMember?.RespawnManager == null || this != GameMain.NetworkMember.RespawnManager.RespawnShuttle))
+            {
+                subBody.Body.ResetDynamics();
+                subBody.Body.Enabled = false;
+
+                foreach (MapEntity e in MapEntity.mapEntityList)
+                {
+                    if (e.Submarine == this)
+                    {
+                        Spawner.AddToRemoveQueue(e);
+                    }
+                }
+
+                foreach (Character c in Character.CharacterList)
+                {
+                    if (c.Submarine == this)
+                    {
+                        c.Kill(CauseOfDeath.Pressure);
+                        c.Enabled = false;
+                    }
+                }
+
+                return;
+            }
 
             subBody.Body.LinearVelocity = new Vector2(
                 LockX ? 0.0f : subBody.Body.LinearVelocity.X, 
@@ -695,8 +722,8 @@ namespace Barotrauma
 
             for (int i = 0; i < 2; i++ )
             {
-                if (Submarine.MainSubs[i] == null) continue;
+                if (MainSubs[i] == null) continue;
-                if (this != Submarine.MainSubs[i] && Submarine.MainSubs[i].DockedTo.Contains(this)) return;
+                if (this != MainSubs[i] && MainSubs[i].DockedTo.Contains(this)) return;
             }
 
             //send updates more frequently if moving fast

Barotrauma/BarotraumaShared/Source/Map/SubmarineBody.cs

@@ -16,8 +16,6 @@ namespace Barotrauma
     class SubmarineBody
     {
         public const float DamageDepth = -30000.0f;
-        //private const float PressureDamageMultiplier = 0.001f;
-
         private const float DamageMultiplier = 50.0f;
 
         private const float Friction = 0.2f, Restitution = 0.0f;

Barotrauma/BarotraumaShared/Source/Networking/NetworkMember.cs

@@ -117,6 +117,11 @@ namespace Barotrauma.Networking
             get { return null; }
         }
 
+        public RespawnManager RespawnManager
+        {
+            get { return respawnManager; }
+        }
+
         public NetworkMember()
         {
             InitProjSpecific();

Barotrauma/BarotraumaShared/Source/Networking/RespawnManager.cs

@@ -59,6 +59,11 @@ namespace Barotrauma.Networking
 
         private float updateReturnTimer;
 
+        public Submarine RespawnShuttle
+        {
+            get { return respawnShuttle; }
+        }
+
         public RespawnManager(NetworkMember networkMember, Submarine shuttle)
             : base(shuttle)
         {

Barotrauma/BarotraumaShared/Source/Screens/GameScreen.cs

@@ -24,15 +24,15 @@ namespace Barotrauma
         {
             base.Select();
 
-            if (Character.Controlled!=null)
+            if (Character.Controlled != null)
             {
                 cam.Position = Character.Controlled.WorldPosition;
-                cam.UpdateTransform();
+                cam.UpdateTransform(true, !GameMain.DebugDraw);
             }
             else if (Submarine.MainSub != null)
             {
                 cam.Position = Submarine.MainSub.WorldPosition;
-                cam.UpdateTransform();
+                cam.UpdateTransform(true, !GameMain.DebugDraw);
             }
 
             foreach (MapEntity entity in MapEntity.mapEntityList)