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/Effects/FlashTarget.cs

@@ -0,0 +1,82 @@
+#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.Effects;
+using OpenRA.Graphics;
+using OpenRA.Primitives;
+
+namespace OpenRA.Mods.Common.Effects
+{
+	public class FlashTarget : IEffect
+	{
+		readonly Actor target;
+		readonly int count;
+		readonly int interval;
+
+		readonly TintModifiers modifiers;
+		readonly float3 tint;
+		readonly float? alpha;
+
+		int tick;
+
+		FlashTarget(Actor target, int count, int interval, int delay)
+		{
+			this.target = target;
+			this.count = count;
+			this.interval = interval;
+			tick = -delay;
+
+			target.World.RemoveAll(effect => effect is FlashTarget flashTarget && flashTarget.target == target);
+		}
+
+		public FlashTarget(Actor target, Color color, float alpha = 0.5f, int count = 2, int interval = 2, int delay = 0)
+			: this(target, count, interval, delay)
+		{
+			modifiers = TintModifiers.ReplaceColor;
+			tint = new float3(color.R, color.G, color.B) / 255f;
+			this.alpha = alpha;
+		}
+
+		public FlashTarget(Actor target, float3 tint, int count = 2, int interval = 2, int delay = 0)
+			: this(target, count, interval, delay)
+		{
+			this.tint = tint;
+		}
+
+		public void Tick(World world)
+		{
+			if (++tick >= count * interval || !target.IsInWorld)
+				world.AddFrameEndTask(w => w.Remove(this));
+		}
+
+		public IEnumerable<IRenderable> Render(WorldRenderer wr)
+		{
+			if (target.IsInWorld && tick >= 0 && tick % interval == 0)
+			{
+				return target.Render(wr)
+					.Where(r => !r.IsDecoration && r is IModifyableRenderable)
+					.Select(r =>
+					{
+						var mr = (IModifyableRenderable)r;
+						mr = mr.WithTint(tint, mr.TintModifiers | modifiers);
+						if (alpha.HasValue)
+							mr = mr.WithAlpha(alpha.Value);
+
+						return mr;
+					});
+			}
+
+			return SpriteRenderable.None;
+		}
+	}
+}