93 lines
2.5 KiB
C#
93 lines
2.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
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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. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Drawing;
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using OpenRA.Graphics;
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using OpenRA.Mods.Common.Graphics;
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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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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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OuterRadius = Radius + new WDist(Math.Max(PointA.Length, PointB.Length));
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}
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public WDist DistanceFromEdge(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, Actor actor)
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{
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return DistanceFromEdge((pos - actor.CenterPosition).Rotate(-actor.Orientation));
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}
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public void DrawCombatOverlay(WorldRenderer wr, RgbaColorRenderer wcr, Actor actor)
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{
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var a = actor.CenterPosition + new WVec(PointA.X, PointA.Y, 0).Rotate(actor.Orientation);
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var b = actor.CenterPosition + new WVec(PointB.X, PointB.Y, 0).Rotate(actor.Orientation);
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var offset = new WVec(a.Y - b.Y, b.X - a.X, 0);
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offset = offset * Radius.Length / offset.Length;
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var c = Color.Yellow;
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RangeCircleRenderable.DrawRangeCircle(wr, a, Radius, 1, c, 0, c);
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RangeCircleRenderable.DrawRangeCircle(wr, b, Radius, 1, c, 0, c);
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wcr.DrawLine(new[] { wr.ScreenPosition(a - offset), wr.ScreenPosition(b - offset) }, 1, c);
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wcr.DrawLine(new[] { wr.ScreenPosition(a + offset), wr.ScreenPosition(b + offset) }, 1, c);
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}
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}
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} |