using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using System;
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public static class VesselExtension
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{
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public static System.Random rng = new System.Random();
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public static bool IsNullOrEmpty<T>(this List<T> vessel)
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{
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return vessel == null || vessel.Count == 0;
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}
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public static bool IsNullOrEmpty<T>(this T[] vessel)
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{
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return vessel == null || vessel.Length == 0;
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}
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public static bool IsNullOrEmpty<T0, T1>(this Dictionary<T0, T1> dictionary)
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{
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return dictionary == null || dictionary.Count == 0;
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}
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public static T GetFirst<T>(this List<T> list)
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{
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if (list == null)
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{
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throw new ArgumentNullException("List is null.");
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}
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if (list.Count == 0)
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{
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Debug.Log("List count can't be zero.");
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return default(T);
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}
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return list[0];
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}
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public static T GetLast<T>(this List<T> list)
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{
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if (list == null)
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{
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throw new ArgumentNullException("List is null.");
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}
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if (list.Count == 0)
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{
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Debug.Log("List count can't be zero.");
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return default(T);
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}
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return list[list.Count - 1];
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}
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public static T GetFirst<T>(this T[] list)
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{
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if (list == null)
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{
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throw new ArgumentNullException("Array is null.");
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}
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if (list.Length == 0)
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{
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Debug.Log("Array count can't be zero.");
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return default(T);
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}
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return list[0];
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}
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public static T GetLast<T>(this T[] list)
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{
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if (list == null)
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{
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throw new ArgumentNullException("Array is null.");
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}
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if (list.Length == 0)
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{
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Debug.Log("Array count can't be zero.");
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return default(T);
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}
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return list[list.Length - 1];
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}
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public static T GetRandom<T>(this List<T> list)
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{
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if (list == null)
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{
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throw new ArgumentNullException("List is null.");
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}
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if (list.Count == 0)
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{
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Debug.Log("List count can't be zero.");
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return default(T);
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}
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var randomIndex = UnityEngine.Random.Range(0, list.Count);
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return list[randomIndex];
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}
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public static List<T> Shuffle<T>(this IList<T> list)
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{
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var shuffled = new List<T>(list); // 创建副本
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for (int i = shuffled.Count - 1; i > 0; i--)
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{
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int j = rng.Next(i + 1);
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(shuffled[i], shuffled[j]) = (shuffled[j], shuffled[i]);
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}
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return shuffled;
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}
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}
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