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/SpriteWidget.cs

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+#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 OpenRA.Graphics;
+using OpenRA.Widgets;
+
+namespace OpenRA.Mods.Common.Widgets
+{
+	public class SpriteWidget : Widget
+	{
+		public float Scale = 1f;
+		public Func<float> GetScale;
+		public string Palette = "chrome";
+		public Func<string> GetPalette;
+		public Func<Sprite> GetSprite;
+
+		protected readonly WorldRenderer WorldRenderer;
+
+		[ObjectCreator.UseCtor]
+		public SpriteWidget(WorldRenderer worldRenderer)
+		{
+			GetPalette = () => Palette;
+			GetScale = () => Scale;
+
+			WorldRenderer = worldRenderer;
+		}
+
+		protected SpriteWidget(SpriteWidget other)
+			: base(other)
+		{
+			Palette = other.Palette;
+			GetPalette = other.GetPalette;
+			GetSprite = other.GetSprite;
+
+			WorldRenderer = other.WorldRenderer;
+		}
+
+		public override SpriteWidget Clone() { return new SpriteWidget(this); }
+
+		Sprite cachedSprite = null;
+		string cachedPalette = null;
+		float cachedScale;
+		PaletteReference pr;
+		float2 offset = float2.Zero;
+
+		public override void Draw()
+		{
+			var sprite = GetSprite();
+			var palette = GetPalette();
+			var scale = GetScale();
+
+			if (sprite == null || palette == null)
+				return;
+
+			if (sprite != cachedSprite || scale != cachedScale)
+			{
+				offset = 0.5f * (new float2(RenderBounds.Size) - scale * sprite.Size.XY);
+				cachedSprite = sprite;
+				cachedScale = scale;
+			}
+
+			if (palette != cachedPalette)
+			{
+				pr = WorldRenderer.Palette(palette);
+				cachedPalette = palette;
+			}
+
+			Game.Renderer.EnableAntialiasingFilter();
+			Game.Renderer.SpriteRenderer.DrawSprite(sprite, pr, RenderOrigin + offset, scale);
+			Game.Renderer.DisableAntialiasingFilter();
+		}
+	}
+}