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/Traits/Player/GameSaveViewportManager.cs

@@ -0,0 +1,65 @@
+#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.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[TraitLocation(SystemActors.Player)]
+	public class GameSaveViewportManagerInfo : TraitInfo
+	{
+		public override object Create(ActorInitializer init) { return new GameSaveViewportManager(); }
+	}
+
+	public class GameSaveViewportManager : IWorldLoaded, IGameSaveTraitData
+	{
+		WorldRenderer worldRenderer;
+
+		void IWorldLoaded.WorldLoaded(World w, WorldRenderer wr) { worldRenderer = wr; }
+
+		List<MiniYamlNode> IGameSaveTraitData.IssueTraitData(Actor self)
+		{
+			// HACK: Store the viewport state for the skirmish observer on the first bot's trait
+			// TODO: This won't make sense for MP saves
+			var localPlayer = worldRenderer.World.LocalPlayer;
+			if ((localPlayer != null && localPlayer.PlayerActor != self) ||
+				(localPlayer == null && self.Owner != self.World.Players.FirstOrDefault(p => p.IsBot)))
+				return null;
+
+			var nodes = new List<MiniYamlNode>()
+			{
+				new("Viewport", FieldSaver.FormatValue(worldRenderer.Viewport.CenterPosition))
+			};
+
+			var renderPlayer = worldRenderer.World.RenderPlayer;
+			if (localPlayer == null && renderPlayer != null)
+				nodes.Add(new MiniYamlNode("RenderPlayer", FieldSaver.FormatValue(renderPlayer.PlayerActor.ActorID)));
+
+			return nodes;
+		}
+
+		void IGameSaveTraitData.ResolveTraitData(Actor self, MiniYaml data)
+		{
+			var viewportNode = data.NodeWithKeyOrDefault("Viewport");
+			if (viewportNode != null)
+				worldRenderer.Viewport.Center(FieldLoader.GetValue<WPos>("Viewport", viewportNode.Value.Value));
+
+			var renderPlayerNode = data.NodeWithKeyOrDefault("RenderPlayer");
+			if (renderPlayerNode != null)
+			{
+				var renderPlayerActorID = FieldLoader.GetValue<uint>("RenderPlayer", renderPlayerNode.Value.Value);
+				worldRenderer.World.RenderPlayer = worldRenderer.World.GetActorById(renderPlayerActorID).Owner;
+			}
+		}
+	}
+}