101 lines
2.8 KiB
C#
101 lines
2.8 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.Collections.Generic;
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using System.Drawing;
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using System.Linq;
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using OpenRA.Graphics;
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using OpenRA.Mods.Common.Graphics;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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class RenderDetectionCircleInfo : ITraitInfo, Requires<DetectCloakedInfo>
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{
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[Desc("Draw a rotating radar scanner update line, disabled by default.")]
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public readonly bool DrawUpdateLine = false;
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[Desc("WAngle the Radar update line advances per tick.")]
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public readonly WAngle UpdateLineTick = new WAngle(-1);
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[Desc("Number of trailing Radar update lines, will only draw one line if zero.")]
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public readonly int LineTrailLength = 3;
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[Desc("Color of the circle and scanner update line.")]
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public readonly Color Color = Color.FromArgb(128, Color.LimeGreen);
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[Desc("Contrast color of the circle and scanner update line.")]
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public readonly Color ContrastColor = Color.FromArgb(96, Color.Black);
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public object Create(ActorInitializer init) { return new RenderDetectionCircle(init.Self, this); }
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}
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class RenderDetectionCircle : ITick, IPostRenderSelection
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{
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readonly RenderDetectionCircleInfo info;
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readonly Actor self;
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WAngle lineAngle;
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public RenderDetectionCircle(Actor self, RenderDetectionCircleInfo info)
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{
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this.info = info;
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this.self = self;
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}
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public IEnumerable<IRenderable> RenderAfterWorld(WorldRenderer wr)
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{
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if (!self.Owner.IsAlliedWith(self.World.RenderPlayer))
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yield break;
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var range = self.TraitsImplementing<DetectCloaked>()
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.Where(a => !a.IsTraitDisabled)
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.Select(a => a.Info.Range)
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.Append(WDist.Zero).Max();
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if (range == WDist.Zero)
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yield break;
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yield return new RangeCircleRenderable(
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self.CenterPosition,
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range,
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0,
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info.Color,
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info.ContrastColor);
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if (info.DrawUpdateLine)
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{
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for (var i = info.LineTrailLength; i >= 0; i--)
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{
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var angle = lineAngle - new WAngle(i * (info.UpdateLineTick.Angle <= 512 ? 1 : -1));
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var length = range.Length * new WVec(angle.Cos(), angle.Sin(), 0) / 1024;
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var alpha = info.Color.A - (info.LineTrailLength > 0 ? i * info.Color.A / info.LineTrailLength : 0);
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yield return new BeamRenderable(
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self.CenterPosition,
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0,
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length,
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3,
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Color.FromArgb(alpha, info.ContrastColor));
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yield return new BeamRenderable(
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self.CenterPosition,
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0,
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length,
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1,
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Color.FromArgb(alpha, info.Color));
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}
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}
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}
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public void Tick(Actor self)
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{
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lineAngle += info.UpdateLineTick;
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}
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}
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}
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