122 lines
4.2 KiB
C#
122 lines
4.2 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using OpenRA.Graphics;
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using OpenRA.Mods.Common.Graphics;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Primitives;
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namespace OpenRA.Mods.Common.HitShapes
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{
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public class CapsuleShape : IHitShape
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{
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public WDist OuterRadius { get; private set; }
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[FieldLoader.Require]
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public readonly int2 PointA;
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[FieldLoader.Require]
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public readonly int2 PointB;
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public readonly WDist Radius = new WDist(426);
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[Desc("Defines the top offset relative to the actor's center.")]
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public readonly int VerticalTopOffset = 0;
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[Desc("Defines the bottom offset relative to the actor's center.")]
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public readonly int VerticalBottomOffset = 0;
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int2 ab;
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int abLenSq;
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public CapsuleShape() { }
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public CapsuleShape(int2 a, int2 b, WDist radius)
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{
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PointA = a;
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PointB = b;
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Radius = radius;
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}
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public void Initialize()
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{
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ab = PointB - PointA;
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abLenSq = ab.LengthSquared / 1024;
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if (abLenSq == 0)
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throw new YamlException("This Capsule describes a circle. Use a Circle HitShape instead.");
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if (VerticalTopOffset < VerticalBottomOffset)
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throw new YamlException("VerticalTopOffset must be equal to or higher than VerticalBottomOffset.");
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OuterRadius = Radius + new WDist(Math.Max(PointA.Length, PointB.Length));
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}
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public WDist DistanceFromEdge(in WVec v)
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{
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var p = new int2(v.X, v.Y);
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var t = int2.Dot(p - PointA, ab) / abLenSq;
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if (t < 0)
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return new WDist(Math.Max(0, (PointA - p).Length - Radius.Length));
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if (t > 1024)
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return new WDist(Math.Max(0, (PointB - p).Length - Radius.Length));
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var projection = PointA + new int2(
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ab.X * t / 1024,
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ab.Y * t / 1024);
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var distance = (projection - p).Length;
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return new WDist(Math.Max(0, distance - Radius.Length));
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}
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public WDist DistanceFromEdge(WPos pos, WPos origin, WRot orientation)
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{
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if (pos.Z > origin.Z + VerticalTopOffset)
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return DistanceFromEdge((pos - (origin + new WVec(0, 0, VerticalTopOffset))).Rotate(-orientation));
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if (pos.Z < origin.Z + VerticalBottomOffset)
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return DistanceFromEdge((pos - (origin + new WVec(0, 0, VerticalBottomOffset))).Rotate(-orientation));
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return DistanceFromEdge((pos - new WPos(origin.X, origin.Y, pos.Z)).Rotate(-orientation));
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}
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IEnumerable<IRenderable> IHitShape.RenderDebugOverlay(HitShape hs, WorldRenderer wr, WPos origin, WRot orientation)
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{
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var a = origin + new WVec(PointA.X, PointA.Y, VerticalTopOffset).Rotate(orientation);
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var b = origin + new WVec(PointB.X, PointB.Y, VerticalTopOffset).Rotate(orientation);
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var aa = origin + new WVec(PointA.X, PointA.Y, VerticalBottomOffset).Rotate(orientation);
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var bb = origin + new WVec(PointB.X, PointB.Y, VerticalBottomOffset).Rotate(orientation);
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var offset1 = new WVec(a.Y - b.Y, b.X - a.X, 0);
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offset1 = offset1 * Radius.Length / offset1.Length;
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var offset2 = new WVec(aa.Y - bb.Y, bb.X - aa.X, 0);
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offset2 = offset2 * Radius.Length / offset2.Length;
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var shapeColor = hs.IsTraitDisabled ? Color.LightGray : Color.Yellow;
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yield return new CircleAnnotationRenderable(a, Radius, 1, shapeColor);
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yield return new CircleAnnotationRenderable(b, Radius, 1, shapeColor);
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yield return new CircleAnnotationRenderable(aa, Radius, 1, shapeColor);
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yield return new CircleAnnotationRenderable(bb, Radius, 1, shapeColor);
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yield return new CircleAnnotationRenderable(origin, OuterRadius, 1, hs.IsTraitDisabled ? Color.Gray : Color.LimeGreen);
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yield return new LineAnnotationRenderable(a - offset1, b - offset1, 1, shapeColor);
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yield return new LineAnnotationRenderable(a + offset1, b + offset1, 1, shapeColor);
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yield return new LineAnnotationRenderable(aa - offset2, bb - offset2, 1, shapeColor);
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yield return new LineAnnotationRenderable(aa + offset2, bb + offset2, 1, shapeColor);
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}
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}
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}
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