using System;

namespace Goo.FpsUI;

// Compass logic: a 0..360 heading plus the shortest signed angular delta the view uses to
// place cardinal ticks. Engine-free.
public sealed class CompassModel
{
    public float Heading { get; private set; }  // current yaw, normalized 0..360

    public void SetHeading( float yawDeg )       // set heading from game code (any range)
        => Heading = ((yawDeg % 360f) + 360f) % 360f;

    // Signed delta from `from` to `to`, in (-180, 180]. Used to position ticks around center.
    public static float ShortestDelta( float from, float to ) => ((to - from + 540f) % 360f) - 180f;

    public bool Tick( float dt ) => false;  // heading changes drive rebuilds, not the damper
}