132 lines
3.9 KiB
C#
132 lines
3.9 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEngine;
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namespace YachtDice.Dice
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{
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public class Dice : MonoBehaviour
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{
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[Serializable]
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public struct Entry : IEquatable<Entry>
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{
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[field: SerializeField] public int Value { get; private set; }
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[field: SerializeField] public Transform Point { get; private set; }
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public bool Equals(Entry other) => Point == other.Point;
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public override bool Equals(object obj) => obj is Entry other && Equals(other);
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public override int GetHashCode() => Point != null ? Point.GetHashCode() : 0;
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}
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[SerializeField] private List<Entry> entries = new();
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private HashSet<Entry> _entrySet;
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private void Awake() => RebuildSet();
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private void OnValidate() => RebuildSet();
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private void RebuildSet()
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{
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_entrySet = new HashSet<Entry>();
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if (entries == null) return;
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foreach (var t in entries)
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_entrySet.Add(t);
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}
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public bool TryGetTopValue(out int value) => TryGetExtremeValue(isTop: true, out value);
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public bool TryGetBottomValue(out int value) => TryGetExtremeValue(isTop: false, out value);
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public int AlignToTopByLocalAngles()
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{
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var e = GetExtremeEntryByWorldY(isTop: true);
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AlignByFaceLocalAngles(e.Point);
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return e.Value;
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}
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public int AlignToBottomByLocalAngles()
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{
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var e = GetExtremeEntryByWorldY(isTop: false);
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AlignByFaceLocalAngles(e.Point);
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return e.Value;
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}
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private bool TryGetExtremeValue(bool isTop, out int value)
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{
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value = default;
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if (_entrySet == null || _entrySet.Count == 0)
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return false;
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var found = false;
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var bestY = isTop ? float.NegativeInfinity : float.PositiveInfinity;
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int best = default;
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foreach (var e in _entrySet)
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{
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var p = e.Point;
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if (!p) continue;
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float y = p.position.y;
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if (!found || (isTop ? y > bestY : y < bestY))
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{
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found = true;
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bestY = y;
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best = e.Value;
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}
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}
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if (!found) return false;
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value = best;
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return true;
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}
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private Entry GetExtremeEntryByWorldY(bool isTop)
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{
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if (_entrySet == null || _entrySet.Count == 0)
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throw new InvalidOperationException("Dice: коллекция пуста.");
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var found = false;
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var bestY = isTop ? float.NegativeInfinity : float.PositiveInfinity;
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Entry best = default;
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foreach (var e in _entrySet)
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{
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var p = e.Point;
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if (!p) continue;
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var y = p.position.y;
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if (found && (isTop ? !(y > bestY) : !(y < bestY))) continue;
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found = true;
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bestY = y;
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best = e;
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}
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if (!found)
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throw new InvalidOperationException("Dice: все Transform == null.");
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return best;
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}
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private static float Norm180(float a)
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{
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a %= 360f;
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return a > 180f ? a - 360f : (a < -180f ? a + 360f : a);
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}
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private void AlignByFaceLocalAngles(Transform facePoint)
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{
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if (!facePoint) throw new InvalidOperationException("Dice: facePoint == null.");
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transform.localEulerAngles = Vector3.Scale(facePoint.localEulerAngles, new Vector3(-1f, -1f, -1f));
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var e = transform.localEulerAngles;
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transform.localEulerAngles = new Vector3(Norm180(e.x), Norm180(e.y), Norm180(e.z));
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}
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}
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}
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