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/ActorExts.cs

@@ -0,0 +1,83 @@
+#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 System.Linq;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common
+{
+	public static class ActorExts
+	{
+		public static bool IsAtGroundLevel(this Actor self)
+		{
+			if (self.OccupiesSpace == null)
+				return false;
+
+			if (!self.IsInWorld)
+				return false;
+
+			var map = self.World.Map;
+
+			if (!map.Contains(self.Location))
+				return false;
+
+			return map.DistanceAboveTerrain(self.CenterPosition).Length == 0;
+		}
+
+		public static bool AppearsFriendlyTo(this Actor self, Actor toActor)
+		{
+			var stance = toActor.Owner.RelationshipWith(self.Owner);
+			if (stance == PlayerRelationship.Ally)
+				return true;
+
+			if (self.EffectiveOwner != null && self.EffectiveOwner.Disguised && !toActor.Info.HasTraitInfo<IgnoresDisguiseInfo>())
+				return toActor.Owner.RelationshipWith(self.EffectiveOwner.Owner) == PlayerRelationship.Ally;
+
+			return false;
+		}
+
+		public static bool AppearsHostileTo(this Actor self, Actor toActor)
+		{
+			var stance = toActor.Owner.RelationshipWith(self.Owner);
+			if (stance == PlayerRelationship.Ally)
+				return false;
+
+			if (self.EffectiveOwner != null && self.EffectiveOwner.Disguised && !toActor.Info.HasTraitInfo<IgnoresDisguiseInfo>())
+				return toActor.Owner.RelationshipWith(self.EffectiveOwner.Owner) == PlayerRelationship.Enemy;
+
+			return stance == PlayerRelationship.Enemy;
+		}
+
+		public static void NotifyBlocker(this Actor self, IEnumerable<Actor> blockers)
+		{
+			foreach (var blocker in blockers)
+				foreach (var moveBlocked in blocker.TraitsImplementing<INotifyBlockingMove>())
+					moveBlocked.OnNotifyBlockingMove(blocker, self);
+		}
+
+		public static void NotifyBlocker(this Actor self, CPos position)
+		{
+			NotifyBlocker(self, self.World.ActorMap.GetActorsAt(position));
+		}
+
+		public static void NotifyBlocker(this Actor self, IEnumerable<CPos> positions)
+		{
+			NotifyBlocker(self, positions.SelectMany(self.World.ActorMap.GetActorsAt));
+		}
+
+		public static CPos ClosestCell(this Actor self, IEnumerable<CPos> cells)
+		{
+			return cells.MinByOrDefault(c => (self.Location - c).LengthSquared);
+		}
+	}
+}