Move Interactable and Selectable to Mods.Common.

OpenRA.Mods.Common/Traits/Interactable.cs

@@ -0,0 +1,80 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2020 The OpenRA Developers (see AUTHORS)
+ * 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.Linq;
+using OpenRA.Graphics;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Used to enable mouse interaction on actors that are not Selectable.")]
+	public class InteractableInfo : ITraitInfo, IMouseBoundsInfo, IDecorationBoundsInfo
+	{
+		[Desc("Defines a custom rectangle for mouse interaction with the actor.",
+			"If null, the engine will guess an appropriate size based on the With*Body trait.",
+			"The first two numbers define the width and height of the rectangle.",
+			"The (optional) second two numbers define an x and y offset from the actor center.")]
+		public readonly int[] Bounds = null;
+
+		[Desc("Defines a custom rectangle for Decorations (e.g. the selection box).",
+			"If null, Bounds will be used instead")]
+		public readonly int[] DecorationBounds = null;
+
+		public virtual object Create(ActorInitializer init) { return new Interactable(this); }
+	}
+
+	public class Interactable : INotifyCreated, IMouseBounds, IDecorationBounds
+	{
+		readonly InteractableInfo info;
+		IAutoMouseBounds[] autoBounds;
+
+		public Interactable(InteractableInfo info)
+		{
+			this.info = info;
+		}
+
+		void INotifyCreated.Created(Actor self)
+		{
+			autoBounds = self.TraitsImplementing<IAutoMouseBounds>().ToArray();
+		}
+
+		Rectangle AutoBounds(Actor self, WorldRenderer wr)
+		{
+			return autoBounds.Select(s => s.AutoMouseoverBounds(self, wr)).FirstOrDefault(r => !r.IsEmpty);
+		}
+
+		Rectangle Bounds(Actor self, WorldRenderer wr, int[] bounds)
+		{
+			if (bounds == null)
+				return AutoBounds(self, wr);
+
+			var size = new int2(bounds[0], bounds[1]);
+
+			var offset = -size / 2;
+			if (bounds.Length > 2)
+				offset += new int2(bounds[2], bounds[3]);
+
+			var xy = wr.ScreenPxPosition(self.CenterPosition) + offset;
+			return new Rectangle(xy.X, xy.Y, size.X, size.Y);
+		}
+
+		Rectangle IMouseBounds.MouseoverBounds(Actor self, WorldRenderer wr)
+		{
+			return Bounds(self, wr, info.Bounds);
+		}
+
+		Rectangle IDecorationBounds.DecorationBounds(Actor self, WorldRenderer wr)
+		{
+			return Bounds(self, wr, info.DecorationBounds ?? info.Bounds);
+		}
+	}
+}