FloorTileItem station extension/new grid creation (#2500)

* FloorTileItemComponent can now extend the station, or create new grids.

* Fixes wrong interaction system EntityCoordinates check.
Needed for all this to work.

Content.Server/GameObjects/Components/Items/FloorTileItemComponent.cs

@@ -1,4 +1,5 @@
 using Content.Server.GameObjects.Components.Stack;
+using Content.Shared.Audio;
 using Content.Shared.Interfaces.GameObjects.Components;
 using Content.Shared.Maps;
 using Content.Shared.Utility;
@@ -8,6 +9,7 @@ using Robust.Shared.GameObjects.Systems;
 using Robust.Shared.Interfaces.Map;
 using Robust.Shared.IoC;
 using Robust.Shared.Map;
+using Robust.Shared.Maths;
 using Robust.Shared.Serialization;
 
 namespace Content.Server.GameObjects.Components.Items
@@ -33,23 +35,52 @@ namespace Content.Server.GameObjects.Components.Items
             Owner.EnsureComponent<StackComponent>();
         }
 
+        private bool HasBaseTurf(ContentTileDefinition tileDef, string baseTurf)
+        {
+            foreach (var tileBaseTurf in tileDef.BaseTurfs)
+            {
+                if (baseTurf == tileBaseTurf)
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        private void PlaceAt(IMapGrid mapGrid, EntityCoordinates location, ushort tileId, float offset = 0)
+        {
+            mapGrid.SetTile(location.Offset(new Vector2(offset, offset)), new Tile(tileId));
+            EntitySystem.Get<AudioSystem>().PlayAtCoords("/Audio/Items/genhit.ogg", location, AudioHelpers.WithVariation(0.125f));
+        }
+
         public void AfterInteract(AfterInteractEventArgs eventArgs)
         {
             if (!eventArgs.InRangeUnobstructed(ignoreInsideBlocker: true, popup: true)) return;
             if (!Owner.TryGetComponent(out StackComponent stack)) return;
 
-            var attacked = eventArgs.Target;
+            var location = eventArgs.ClickLocation.AlignWithClosestGridTile();
-            var mapGrid = _mapManager.GetGrid(eventArgs.ClickLocation.GetGridId(Owner.EntityManager));
+            var locationMap = location.ToMap(Owner.EntityManager);
-            var tile = mapGrid.GetTileRef(eventArgs.ClickLocation);
-            var tileDef = (ContentTileDefinition)_tileDefinitionManager[tile.Tile.TypeId];
 
-            if (tileDef.IsSubFloor && attacked == null && stack.Use(1))
+            var desiredTile = (ContentTileDefinition)_tileDefinitionManager[_outputTile];
+
+            if (_mapManager.TryGetGrid(location.GetGridId(Owner.EntityManager), out var mapGrid))
             {
-                var desiredTile = _tileDefinitionManager[_outputTile];
+                var tile = mapGrid.GetTileRef(location);
-                mapGrid.SetTile(eventArgs.ClickLocation, new Tile(desiredTile.TileId));
+                var baseTurf = (ContentTileDefinition)_tileDefinitionManager[tile.Tile.TypeId];
-                EntitySystem.Get<AudioSystem>().PlayAtCoords("/Audio/Items/genhit.ogg", eventArgs.ClickLocation);
-            }
 
+                if (HasBaseTurf(desiredTile, baseTurf.Name) && eventArgs.Target == null && stack.Use(1))
+                {
+                    PlaceAt(mapGrid, location, desiredTile.TileId);
+                }
+            }
+            else if(HasBaseTurf(desiredTile, "space"))
+            {
+                mapGrid = _mapManager.CreateGrid(locationMap.MapId);
+                mapGrid.WorldPosition = locationMap.Position;
+                location = new EntityCoordinates(mapGrid.GridEntityId, Vector2.Zero);
+                PlaceAt(mapGrid, location, desiredTile.TileId, mapGrid.TileSize/2f);
+            }
 
         }
 

Content.Server/GameObjects/EntitySystems/Click/InteractionSystem.cs

@@ -156,7 +156,7 @@ namespace Content.Server.GameObjects.EntitySystems.Click
         private bool HandleWideAttack(ICommonSession session, EntityCoordinates coords, EntityUid uid)
         {
             // client sanitization
-            if (!_mapManager.GridExists(coords.GetGridId(_entityManager)))
+            if (!coords.IsValid(_entityManager))
             {
                 Logger.InfoS("system.interaction", $"Invalid Coordinates: client={session}, coords={coords}");
                 return true;
@@ -211,7 +211,7 @@ namespace Content.Server.GameObjects.EntitySystems.Click
         private bool HandleClientUseItemInHand(ICommonSession session, EntityCoordinates coords, EntityUid uid)
         {
             // client sanitization
-            if (!_mapManager.GridExists(coords.GetGridId(_entityManager)))
+            if (!coords.IsValid(_entityManager))
             {
                 Logger.InfoS("system.interaction", $"Invalid Coordinates: client={session}, coords={coords}");
                 return true;
@@ -242,7 +242,7 @@ namespace Content.Server.GameObjects.EntitySystems.Click
         private bool HandleTryPullObject(ICommonSession session, EntityCoordinates coords, EntityUid uid)
         {
             // client sanitization
-            if (!_mapManager.GridExists(coords.GetGridId(_entityManager)))
+            if (!coords.IsValid(_entityManager))
             {
                 Logger.InfoS("system.interaction", $"Invalid Coordinates for pulling: client={session}, coords={coords}");
                 return false;
@@ -303,7 +303,7 @@ namespace Content.Server.GameObjects.EntitySystems.Click
             }
 
             // Verify player is on the same map as the entity he clicked on
-            if (_mapManager.GetGrid(coordinates.GetGridId(EntityManager)).ParentMapId != playerTransform.MapID)
+            if (coordinates.GetMapId(_entityManager) != playerTransform.MapID)
             {
                 Logger.WarningS("system.interaction",
                     $"Player named {player.Name} clicked on a map he isn't located on");