ExtensionMethods.cs

using System.Collections.Generic;
using UnityEngine;

public static class ExtensionMethods {
	public static Vector3 ToIsoVec3(this Vector2 input) {
		var vec3 = new Vector3(input.x, 0f, input.y).normalized;
		var quat = Quaternion.Euler(0f, 45f, 0f);
		var rotated = quat * vec3;
		return rotated;
	}

	public static void FaceCamera(this Transform t) {
		t.forward = Camera.main.transform.forward;
	}

	/// <summary>
	/// Get a random Element from the list.
	/// </summary>
	public static T Random<T>(this List<T> list) {
		return list[UnityEngine.Random.Range(0, list.Count)];
	}

	/// <summary>
	/// Get a random Element from the list AND remove it from the list.
	/// </summary>
	public static T RemoveRandom<T>(this List<T> list) {
		var item = list[UnityEngine.Random.Range(0, list.Count)];
		list.Remove(item);
		return item;
	}
}