Implement map text (#28705)

Content.Client/MapText/MapTextSystem.cs

@@ -0,0 +1,81 @@
+using Content.Shared.MapText;
+using Robust.Client.Graphics;
+using Robust.Client.ResourceManagement;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.RichText;
+using Robust.Shared.Configuration;
+using Robust.Shared.GameStates;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Utility;
+
+namespace Content.Client.MapText;
+
+/// <inheritdoc/>
+public sealed class MapTextSystem : SharedMapTextSystem
+{
+    [Dependency] private readonly IConfigurationManager _configManager = default!;
+    [Dependency] private readonly IUserInterfaceManager _uiManager = default!;
+    [Dependency] private readonly SharedTransformSystem _transform = default!;
+    [Dependency] private readonly IResourceCache _resourceCache = default!;
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+    [Dependency] private readonly IOverlayManager _overlayManager = default!;
+
+    private MapTextOverlay _overlay = default!;
+
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<MapTextComponent, ComponentStartup>(OnComponentStartup);
+        SubscribeLocalEvent<MapTextComponent, ComponentHandleState>(HandleCompState);
+
+        _overlay = new MapTextOverlay(_configManager, EntityManager, _uiManager, _transform, _resourceCache, _prototypeManager);
+        _overlayManager.AddOverlay(_overlay);
+
+        // TODO move font prototype to robust.shared, then use ProtoId<FontPrototype>
+        DebugTools.Assert(_prototypeManager.HasIndex<FontPrototype>(SharedMapTextComponent.DefaultFont));
+    }
+
+    private void OnComponentStartup(Entity<MapTextComponent> ent, ref ComponentStartup args)
+    {
+        CacheText(ent.Comp);
+        // TODO move font prototype to robust.shared, then use ProtoId<FontPrototype>
+        DebugTools.Assert(_prototypeManager.HasIndex<FontPrototype>(ent.Comp.FontId));
+    }
+
+    private void HandleCompState(Entity<MapTextComponent> ent, ref ComponentHandleState args)
+    {
+        if (args.Current is not MapTextComponentState state)
+            return;
+
+        ent.Comp.Text = state.Text;
+        ent.Comp.LocText = state.LocText;
+        ent.Comp.Color = state.Color;
+        ent.Comp.FontId = state.FontId;
+        ent.Comp.FontSize = state.FontSize;
+        ent.Comp.Offset = state.Offset;
+
+        CacheText(ent.Comp);
+    }
+
+    private void CacheText(MapTextComponent component)
+    {
+        component.CachedFont = null;
+
+        component.CachedText = string.IsNullOrWhiteSpace(component.Text)
+            ? Loc.GetString(component.LocText)
+            : component.Text;
+
+        if (!_prototypeManager.TryIndex<FontPrototype>(component.FontId, out var fontPrototype))
+        {
+            component.CachedText = Loc.GetString("map-text-font-error");
+            component.Color = Color.Red;
+
+            if(_prototypeManager.TryIndex<FontPrototype>(SharedMapTextComponent.DefaultFont, out var @default))
+                component.CachedFont = new VectorFont(_resourceCache.GetResource<FontResource>(@default.Path), 14);
+            return;
+        }
+
+        var fontResource = _resourceCache.GetResource<FontResource>(fontPrototype.Path);
+        component.CachedFont = new VectorFont(fontResource, component.FontSize);
+    }
+}