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/HitShapes/Rectangle.cs

@@ -0,0 +1,147 @@
+#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 System.Collections.Generic;
+using System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Graphics;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Primitives;
+
+namespace OpenRA.Mods.Common.HitShapes
+{
+	public class RectangleShape : IHitShape
+	{
+		public WDist OuterRadius { get; private set; }
+
+		[FieldLoader.Require]
+		public readonly int2 TopLeft;
+
+		[FieldLoader.Require]
+		public readonly int2 BottomRight;
+
+		[Desc("Defines the top offset relative to the actor's center.")]
+		public readonly int VerticalTopOffset = 0;
+
+		[Desc("Defines the bottom offset relative to the actor's center.")]
+		public readonly int VerticalBottomOffset = 0;
+
+		[Desc("Rotates shape by an angle relative to actor facing. Mostly required for buildings on isometric terrain.",
+			"Mobile actors do NOT need this!")]
+		public readonly WAngle LocalYaw = WAngle.Zero;
+
+		int2 quadrantSize;
+		int2 center;
+
+		WVec[] combatOverlayVertsTop;
+		WVec[] combatOverlayVertsBottom;
+		WVec[] combatOverlayVertsSide1;
+		WVec[] combatOverlayVertsSide2;
+
+		public RectangleShape() { }
+
+		public RectangleShape(int2 tl, int2 br)
+		{
+			TopLeft = tl;
+			BottomRight = br;
+		}
+
+		public void Initialize()
+		{
+			if (TopLeft.X >= BottomRight.X || TopLeft.Y >= BottomRight.Y)
+				throw new YamlException("TopLeft and BottomRight points are invalid.");
+
+			if (VerticalTopOffset < VerticalBottomOffset)
+				throw new YamlException("VerticalTopOffset must be equal to or higher than VerticalBottomOffset.");
+
+			quadrantSize = (BottomRight - TopLeft) / 2;
+			center = TopLeft + quadrantSize;
+
+			var topRight = new int2(BottomRight.X, TopLeft.Y);
+			var bottomLeft = new int2(TopLeft.X, BottomRight.Y);
+			var corners = new[] { TopLeft, BottomRight, topRight, bottomLeft };
+			OuterRadius = new WDist(corners.Max(x => x.Length));
+
+			combatOverlayVertsTop =
+			[
+				new(TopLeft.X, TopLeft.Y, VerticalTopOffset),
+				new(BottomRight.X, TopLeft.Y, VerticalTopOffset),
+				new(BottomRight.X, BottomRight.Y, VerticalTopOffset),
+				new(TopLeft.X, BottomRight.Y, VerticalTopOffset),
+			];
+
+			combatOverlayVertsBottom =
+			[
+				new(TopLeft.X, TopLeft.Y, VerticalBottomOffset),
+				new(BottomRight.X, TopLeft.Y, VerticalBottomOffset),
+				new(BottomRight.X, BottomRight.Y, VerticalBottomOffset),
+				new(TopLeft.X, BottomRight.Y, VerticalBottomOffset),
+			];
+
+			combatOverlayVertsSide1 =
+			[
+				new(TopLeft.X, TopLeft.Y, VerticalBottomOffset),
+				new(TopLeft.X, TopLeft.Y, VerticalTopOffset),
+				new(TopLeft.X, BottomRight.Y, VerticalTopOffset),
+				new(TopLeft.X, BottomRight.Y, VerticalBottomOffset),
+			];
+
+			combatOverlayVertsSide2 =
+			[
+				new(BottomRight.X, TopLeft.Y, VerticalBottomOffset),
+				new(BottomRight.X, TopLeft.Y, VerticalTopOffset),
+				new(BottomRight.X, BottomRight.Y, VerticalTopOffset),
+				new(BottomRight.X, BottomRight.Y, VerticalBottomOffset),
+			];
+		}
+
+		public WDist DistanceFromEdge(in WVec v)
+		{
+			var r = new WVec(
+				Math.Max(Math.Abs(v.X - center.X) - quadrantSize.X, 0),
+				Math.Max(Math.Abs(v.Y - center.Y) - quadrantSize.Y, 0), 0);
+
+			return new WDist(r.HorizontalLength);
+		}
+
+		public WDist DistanceFromEdge(WPos pos, WPos origin, WRot orientation)
+		{
+			orientation += WRot.FromYaw(LocalYaw);
+
+			if (pos.Z > origin.Z + VerticalTopOffset)
+				return DistanceFromEdge((pos - (origin + new WVec(0, 0, VerticalTopOffset))).Rotate(-orientation));
+
+			if (pos.Z < origin.Z + VerticalBottomOffset)
+				return DistanceFromEdge((pos - (origin + new WVec(0, 0, VerticalBottomOffset))).Rotate(-orientation));
+
+			return DistanceFromEdge((pos - new WPos(origin.X, origin.Y, pos.Z)).Rotate(-orientation));
+		}
+
+		IEnumerable<IRenderable> IHitShape.RenderDebugOverlay(HitShape hs, WorldRenderer wr, WPos origin, WRot orientation)
+		{
+			orientation += WRot.FromYaw(LocalYaw);
+
+			var vertsTop = combatOverlayVertsTop.Select(v => origin + v.Rotate(orientation)).ToArray();
+			var vertsBottom = combatOverlayVertsBottom.Select(v => origin + v.Rotate(orientation)).ToArray();
+			var side1 = combatOverlayVertsSide1.Select(v => origin + v.Rotate(orientation)).ToArray();
+			var side2 = combatOverlayVertsSide2.Select(v => origin + v.Rotate(orientation)).ToArray();
+
+			var shapeColor = hs.IsTraitDisabled ? Color.LightGray : Color.Yellow;
+
+			yield return new PolygonAnnotationRenderable(vertsTop, origin, 1, shapeColor);
+			yield return new PolygonAnnotationRenderable(vertsBottom, origin, 1, shapeColor);
+			yield return new PolygonAnnotationRenderable(side1, origin, 1, shapeColor);
+			yield return new PolygonAnnotationRenderable(side2, origin, 1, shapeColor);
+			yield return new CircleAnnotationRenderable(origin, OuterRadius, 1, hs.IsTraitDisabled ? Color.Gray : Color.LimeGreen);
+		}
+	}
+}