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Vehicles/VehicleMath.cs
Utility class with small math helpers used by vehicle code. It provides Approach to move a value toward a target by a max step, RemapValClamped to remap a value from one range to another with clamping, and Sign which treats zero as positive.
/// <summary>
/// Small maths helpers for the vehicle code.
/// </summary>
internal static class VehicleMath
{
/// <summary>
/// Move <paramref name="value"/> towards <paramref name="target"/> by at most <paramref name="speed"/>.
/// </summary>
public static float Approach( float target, float value, float speed )
{
var delta = target - value;
if ( delta > speed ) return value + speed;
if ( delta < -speed ) return value - speed;
return target;
}
/// <summary>
/// Map <paramref name="val"/> from [a, b] to [c, d], clamped to the range.
/// </summary>
public static float RemapValClamped( float val, float a, float b, float c, float d )
{
if ( a == b )
return val >= b ? d : c;
var t = ((val - a) / (b - a)).Clamp( 0f, 1f );
return c + (d - c) * t;
}
/// <summary>
/// Zero counts as positive.
/// </summary>
public static float Sign( float x ) => x < 0.0f ? -1.0f : 1.0f;
}