86 lines
2.6 KiB
C#
86 lines
2.6 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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namespace OpenRA.Traits
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{
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public class BodyOrientationInfo : ITraitInfo, IBodyOrientationInfo
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{
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[Desc("Number of facings for gameplay calculations. -1 indicates auto-detection from another trait")]
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public readonly int QuantizedFacings = -1;
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[Desc("Camera pitch for rotation calculations")]
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public readonly WAngle CameraPitch = WAngle.FromDegrees(40);
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public WVec LocalToWorld(WVec vec)
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{
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// RA's 2d perspective doesn't correspond to an orthonormal 3D
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// coordinate system, so fudge the y axis to make things look good
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return new WVec(vec.Y, -CameraPitch.Sin() * vec.X / 1024, vec.Z);
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}
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public WRot QuantizeOrientation(WRot orientation, int facings)
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{
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// Quantization disabled
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if (facings == 0)
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return orientation;
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// Map yaw to the closest facing
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var facing = Util.QuantizeFacing(orientation.Yaw.Angle / 4, facings) * (256 / facings);
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// Roll and pitch are always zero if yaw is quantized
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return new WRot(WAngle.Zero, WAngle.Zero, WAngle.FromFacing(facing));
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}
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public object Create(ActorInitializer init) { return new BodyOrientation(init, this); }
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}
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public class BodyOrientation : IBodyOrientation
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{
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readonly BodyOrientationInfo info;
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readonly Lazy<int> quantizedFacings;
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[Sync] public int QuantizedFacings { get { return quantizedFacings.Value; } }
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public BodyOrientation(ActorInitializer init, BodyOrientationInfo info)
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{
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this.info = info;
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var self = init.Self;
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var race = init.Contains<FactionInit>() ? init.Get<FactionInit, string>() : self.Owner.Faction.InternalName;
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quantizedFacings = Exts.Lazy(() =>
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{
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// Override value is set
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if (info.QuantizedFacings >= 0)
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return info.QuantizedFacings;
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var qboi = self.Info.Traits.GetOrDefault<IQuantizeBodyOrientationInfo>();
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if (qboi == null)
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throw new InvalidOperationException("Actor type '" + self.Info.Name + "' does not define a quantized body orientation.");
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return qboi.QuantizedBodyFacings(self.Info, self.World.Map.SequenceProvider, race);
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});
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}
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public WAngle CameraPitch { get { return info.CameraPitch; } }
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public WVec LocalToWorld(WVec vec)
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{
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return info.LocalToWorld(vec);
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}
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public WRot QuantizeOrientation(Actor self, WRot orientation)
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{
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return info.QuantizeOrientation(orientation, quantizedFacings.Value);
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}
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}
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}
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