Force grids to be collidable (#3480)

Robust.Shared/GameObjects/Systems/SharedMapSystem.Grid.cs

@@ -1,5 +1,7 @@
 using Robust.Shared.GameStates;
 using Robust.Shared.Map;
+using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
 
 namespace Robust.Shared.GameObjects;
 

Robust.Shared/Map/MapGrid.cs

@@ -870,6 +870,7 @@ namespace Robust.Shared.Map
                 return;
 
             // TODO: Move this to the component when we combine.
+            _entityManager.EntitySysManager.GetEntitySystem<SharedPhysicsSystem>().WakeBody(GridEntityId);
             _mapManager.OnGridBoundsChange(GridEntityId, this);
             system?.RegenerateCollision(GridEntityId, chunkRectangles, removedChunks);
         }

Robust.Shared/Physics/Systems/SharedPhysicsSystem.Components.cs

@@ -355,7 +355,7 @@ public partial class SharedPhysicsSystem
     {
         if (body._awake == value)
             return;
-        
+
         if (value && (body.BodyType == BodyType.Static || !body.CanCollide))
             return;
 
@@ -541,6 +541,15 @@ public partial class SharedPhysicsSystem
         body._sleepTime = value;
     }
 
+    public bool WakeBody(EntityUid uid, PhysicsComponent? body = null, FixturesComponent? manager = null, bool force = false)
+    {
+        if (!Resolve(uid, ref body, ref manager))
+            return false;
+
+        WakeBody(body, manager, force);
+        return body._awake;
+    }
+
     /// <summary>
     /// Tries to enable the body and also set it awake.
     /// </summary>

Robust.UnitTesting/Shared/Map/GridCollision_Test.cs

@@ -31,8 +31,7 @@ namespace Robust.UnitTesting.Shared.Map
             EntityUid? gridEnt1;
             EntityUid? gridEnt2;
 
-            await server.WaitPost(() =>
-            {
+            await server.WaitPost(() => {
                 mapId = mapManager.CreateMap();
                 gridId1 = mapManager.CreateGrid(mapId);
                 gridId2 = mapManager.CreateGrid(mapId);
@@ -85,6 +84,9 @@ namespace Robust.UnitTesting.Shared.Map
                     var contact = node.Value;
                     node = node.Next;
 
+                    if (!contact.IsTouching)
+                        continue;
+
                     var bodyA = contact.FixtureA!.Body;
                     var bodyB = contact.FixtureB!.Body;