Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Mods.Common/Widgets/ResourcePreviewWidget.cs

@@ -0,0 +1,92 @@
+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Primitives;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.Common.Widgets
+{
+	public class ResourcePreviewWidget : Widget
+	{
+		public float Scale = 1f;
+
+		public Size IdealPreviewSize { get; private set; }
+
+		readonly WorldRenderer worldRenderer;
+		readonly WorldViewportSizes viewportSizes;
+		readonly IResourceRenderer[] resourceRenderers;
+		readonly Size tileSize;
+
+		string resourceType;
+		IResourceRenderer resourceRenderer;
+		int2 spriteOffset;
+
+		public void SetResourceType(string value)
+		{
+			resourceType = value;
+			if (resourceType != null)
+				resourceRenderer = resourceRenderers.FirstOrDefault(r => r.ResourceTypes.Contains(resourceType));
+			else
+				resourceRenderer = null;
+
+			var bounds = resourceRenderer?.RenderUIPreview(worldRenderer, resourceType, int2.Zero, viewportSizes.DefaultScale)
+				.FirstOrDefault()
+				.PrepareRender(worldRenderer)
+				?.ScreenBounds(worldRenderer);
+
+			if (bounds != null)
+			{
+				spriteOffset = -bounds.Value.Location;
+				IdealPreviewSize = bounds.Value.Size;
+			}
+			else
+				IdealPreviewSize = new Size((int)(tileSize.Width * viewportSizes.DefaultScale), (int)(tileSize.Height * viewportSizes.DefaultScale));
+		}
+
+		[ObjectCreator.UseCtor]
+		public ResourcePreviewWidget(ModData modData, WorldRenderer worldRenderer, World world)
+		{
+			this.worldRenderer = worldRenderer;
+			viewportSizes = modData.GetOrCreate<WorldViewportSizes>();
+			resourceRenderers = world.WorldActor.TraitsImplementing<IResourceRenderer>().ToArray();
+			tileSize = world.Map.Rules.TerrainInfo.TileSize;
+		}
+
+		protected ResourcePreviewWidget(ResourcePreviewWidget other)
+			: base(other)
+		{
+			Scale = other.Scale;
+			worldRenderer = other.worldRenderer;
+			viewportSizes = other.viewportSizes;
+			resourceRenderers = other.resourceRenderers;
+			tileSize = other.tileSize;
+			resourceType = other.resourceType;
+			resourceRenderer = other.resourceRenderer;
+			IdealPreviewSize = other.IdealPreviewSize;
+		}
+
+		public override ResourcePreviewWidget Clone() { return new ResourcePreviewWidget(this); }
+
+		public override void Draw()
+		{
+			if (resourceRenderer == null)
+				return;
+
+			var scale = Scale * viewportSizes.DefaultScale;
+			foreach (var r in resourceRenderer.RenderUIPreview(worldRenderer, resourceType, RenderOrigin + spriteOffset, scale))
+				r.PrepareRender(worldRenderer).Render(worldRenderer);
+		}
+	}
+}