mirror of
https://github.com/modernuo/ModernUO
synced 2026-08-11 22:23:06 -04:00
56 lines
2 KiB
C#
56 lines
2 KiB
C#
/*************************************************************************
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* ModernUO *
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* Copyright 2019-2020 - ModernUO Development Team *
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* Email: hi@modernuo.com *
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* File: LocationComparer.cs *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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*************************************************************************/
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using System.Collections.Generic;
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namespace Server
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{
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public class LocationComparer : IComparer<IPoint3D>
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{
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private static LocationComparer m_Instance;
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public LocationComparer(IPoint3D relativeTo) => RelativeTo = relativeTo;
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public IPoint3D RelativeTo { get; set; }
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public int Compare(IPoint3D x, IPoint3D y) => GetDistance(x) - GetDistance(y);
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public static LocationComparer GetInstance(IPoint3D relativeTo)
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{
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if (m_Instance == null)
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{
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m_Instance = new LocationComparer(relativeTo);
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}
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else
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{
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m_Instance.RelativeTo = relativeTo;
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}
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return m_Instance;
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}
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private int GetDistance(IPoint3D p)
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{
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var x = RelativeTo.X - p.X;
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var y = RelativeTo.Y - p.Y;
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var z = RelativeTo.Z - p.Z;
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x *= 11;
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y *= 11;
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return x * x + y * y + z * z;
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}
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}
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}
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