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.Game/Graphics/Renderable.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.Primitives;
+
+namespace OpenRA.Graphics
+{
+	public interface IRenderable
+	{
+		WPos Pos { get; }
+		int ZOffset { get; }
+		bool IsDecoration { get; }
+
+		IRenderable WithZOffset(int newOffset);
+		IRenderable OffsetBy(in WVec offset);
+		IRenderable AsDecoration();
+
+		IFinalizedRenderable PrepareRender(WorldRenderer wr);
+	}
+
+	public interface IPalettedRenderable : IRenderable
+	{
+		PaletteReference Palette { get; }
+		IPalettedRenderable WithPalette(PaletteReference newPalette);
+	}
+
+	[Flags]
+	public enum TintModifiers
+	{
+		None = 0,
+		IgnoreWorldTint = 1,
+		ReplaceColor = 2
+	}
+
+	public interface IModifyableRenderable : IRenderable
+	{
+		float Alpha { get; }
+		float3 Tint { get; }
+		TintModifiers TintModifiers { get; }
+
+		IModifyableRenderable WithAlpha(float newAlpha);
+		IModifyableRenderable WithTint(in float3 newTint, TintModifiers newTintModifiers);
+	}
+
+	public interface IFinalizedRenderable
+	{
+		void Render(WorldRenderer wr);
+		void RenderDebugGeometry(WorldRenderer wr);
+		Rectangle ScreenBounds(WorldRenderer wr);
+	}
+}