24 lines
1006 B
C#
24 lines
1006 B
C#
namespace NeonSprawl.Server.Game.World;
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/// <summary>
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/// Horizontal (floor-plane) distance on <strong>X/Z only</strong>; <c>Y</c> is ignored for reach (NS-18).
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/// </summary>
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public static class HorizontalReach
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{
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/// <summary>Planar distance <c>sqrt(dx² + dz²)</c> using only <c>X</c> and <c>Z</c>.</summary>
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public static double HorizontalDistance(double ax, double az, double bx, double bz)
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{
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var dx = ax - bx;
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var dz = az - bz;
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return Math.Sqrt(dx * dx + dz * dz);
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}
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/// <summary><c>true</c> when <see cref="HorizontalDistance"/> <c><= radius</c> (boundary inclusive).</summary>
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/// <exception cref="ArgumentOutOfRangeException"><paramref name="radius"/> is negative (invalid configuration).</exception>
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public static bool IsWithinHorizontalRadius(double ax, double az, double bx, double bz, double radius)
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{
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ArgumentOutOfRangeException.ThrowIfNegative(radius);
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return HorizontalDistance(ax, az, bx, bz) <= radius;
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}
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}
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