Floor tile ECS (#8577)

Content.Server/Tiles/FloorTileSystem.cs

@@ -0,0 +1,91 @@
+using Content.Server.Stack;
+using Content.Shared.Audio;
+using Content.Shared.Interaction;
+using Content.Shared.Maps;
+using Content.Shared.Sound;
+using Robust.Shared.Audio;
+using Robust.Shared.Map;
+using Robust.Shared.Player;
+using Robust.Shared.Random;
+
+namespace Content.Server.Tiles
+{
+    public sealed class FloorTileSystem : EntitySystem
+    {
+        [Dependency] private readonly ITileDefinitionManager _tileDefinitionManager = default!;
+        [Dependency] private readonly IMapManager _mapManager = default!;
+        [Dependency] private readonly IRobustRandom _random = default!;
+        [Dependency] private readonly StackSystem _stackSystem = default!;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            SubscribeLocalEvent<FloorTileComponent, AfterInteractEvent>(OnAfterInteract);
+        }
+
+        private void OnAfterInteract(EntityUid uid, FloorTileComponent component, AfterInteractEvent args)
+        {
+            if (!args.CanReach)
+                return;
+
+            if (!TryComp<StackComponent>(uid, out var stack))
+                return;
+
+            if (component.OutputTiles == null)
+                return;
+
+            // this looks a bit sussy but it might be because it needs to be able to place off of grids and expand them
+            var location = args.ClickLocation.AlignWithClosestGridTile();
+            var locationMap = location.ToMap(EntityManager);
+            if (locationMap.MapId == MapId.Nullspace)
+                return;
+            _mapManager.TryGetGrid(location.GetGridId(EntityManager), out var mapGrid);
+
+            foreach (var currentTile in component.OutputTiles)
+            {
+                var currentTileDefinition = (ContentTileDefinition) _tileDefinitionManager[currentTile];
+
+                if (mapGrid != null)
+                {
+                    var tile = mapGrid.GetTileRef(location);
+                    var baseTurf = (ContentTileDefinition) _tileDefinitionManager[tile.Tile.TypeId];
+
+                    if (HasBaseTurf(currentTileDefinition, baseTurf.ID))
+                    {
+                        if (!_stackSystem.Use(uid, 1, stack))
+                            continue;
+
+                        PlaceAt(mapGrid, location, currentTileDefinition.TileId, component.PlaceTileSound);
+                        return;
+                    }
+                }
+                if (HasBaseTurf(currentTileDefinition, "space"))
+                {
+                    mapGrid = _mapManager.CreateGrid(locationMap.MapId);
+                    mapGrid.WorldPosition = locationMap.Position;
+                    location = new EntityCoordinates(mapGrid.GridEntityId, Vector2.Zero);
+                    PlaceAt(mapGrid, location, _tileDefinitionManager[component.OutputTiles[0]].TileId, component.PlaceTileSound, mapGrid.TileSize / 2f);
+                    return;
+                }
+            }
+        }
+
+        public 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, SoundSpecifier placeSound, float offset = 0)
+        {
+            var variant = _random.Pick(((ContentTileDefinition) _tileDefinitionManager[tileId]).PlacementVariants);
+            mapGrid.SetTile(location.Offset(new Vector2(offset, offset)), new Tile(tileId, 0, variant));
+            SoundSystem.Play(Filter.Pvs(location), placeSound.GetSound(), location, AudioHelpers.WithVariation(0.125f, _random));
+        }
+    }
+}