riversong code showcase

2026-05-21 15:52:18 +02:00
commit 4c9eea1c02
462 changed files with 23406 additions and 0 deletions
--- a/Source/Riversong/Game/World/Buildings/BuildingSelectionSystem.cs
+++ b/Source/Riversong/Game/World/Buildings/BuildingSelectionSystem.cs
@@ -0,0 +1,110 @@
+using Cysharp.Threading.Tasks;
+
+namespace DanieleMarotta.RiversongCodeShowcase
+{
+    [UpdateAfter(typeof(EditingStateGameSystem))]
+    public class BuildingSelectionSystem : GameSystem, IInitializable, IUpdatable
+    {
+        [InjectService]
+        private GameConfig _gameConfig;
+
+        [InjectService]
+        private IPointerService _pointerService;
+
+        [InjectService]
+        private UIState _uiState;
+
+        [InjectService]
+        private ITileSpace _tileSpace;
+
+        [InjectService]
+        private IEntityCollection _entityCollection;
+
+        [InjectService]
+        private ICancelAction _cancelAction;
+
+        [InjectService]
+        private EditingState _editingState;
+
+        [InjectService]
+        private ISignalBus _signalBus;
+
+        [InjectService]
+        private IBuildingVisualizationCollection _buildingVisualizationCollection;
+
+        [InjectService]
+        private World _world;
+
+        [InjectService]
+        private MaterialReplacementCache _materialReplacementCache;
+
+        public BuildingSelectionSystem(IServiceLocator serviceLocator) : base(serviceLocator)
+        {
+        }
+
+        public UniTask InitializeAsync()
+        {
+            _cancelAction.AddHandler(
+                (int)CancelActions.CancelSelection,
+                _ =>
+                {
+                    if (_uiState.SelectedBuilding == null) return false;
+                    SetSelectedBuilding(null);
+                    return true;
+                });
+
+            return UniTask.CompletedTask;
+        }
+
+        public void Update()
+        {
+            if (_uiState.SelectedBuilding != null && !_entityCollection.Exists(_uiState.SelectedBuilding.Id))
+            {
+                SetSelectedBuilding(null);
+                return;
+            }
+
+            if (_editingState.ActiveTool != null)
+            {
+                SetSelectedBuilding(null);
+                return;
+            }
+
+            var buildingUnderPointer = GetBuildingUnderPointer();
+            if (_pointerService.TryConsumeLeftClick()) SetSelectedBuilding(buildingUnderPointer);
+
+            HighlightBuilding(buildingUnderPointer);
+            HighlightBuilding(_uiState.SelectedBuilding);
+        }
+
+        private Building GetBuildingUnderPointer()
+        {
+            if (_pointerService.IsPointerOverUI) return null;
+            if (!_pointerService.TryGetPositionOnTerrain(out var position)) return null;
+
+            var tile = _tileSpace.WorldToTile(position);
+            ref var entityIdMapValue = ref _world.EntityIdMap.GetValueRW(tile);
+            if (entityIdMapValue.BuildingId == Entity.InvalidId) return null;
+
+            return _entityCollection.TryGet<Building>(entityIdMapValue.BuildingId, out var building) ? building : null;
+        }
+
+        private void HighlightBuilding(Building building)
+        {
+            if (building == null) return;
+            if (!_buildingVisualizationCollection.TryGetVisualization(building.Id, out var visualization)) return;
+
+            _materialReplacementCache.ReplaceMaterials(visualization.gameObject, _gameConfig.UI.HighlightedGameObjectsMaterial);
+        }
+
+        private void SetSelectedBuilding(Building selectedBuilding)
+        {
+            if (_uiState.SelectedBuilding == selectedBuilding) return;
+
+            var oldSelection = _uiState.SelectedBuilding;
+            _uiState.SelectedBuilding = selectedBuilding;
+
+            _signalBus.Raise(new SelectedBuildingChangedSignal(oldSelection, _uiState.SelectedBuilding));
+        }
+    }
+}