唯二主義

学习自这个教程: https://mp.weixin.qq.com/s/QaEZuMRGTf07pml_h1rhxA

首先创造一个表盘

GameObject → 3D Object → Cylinder 创建1个圆柱体

给它加上刻度

GameObject → 3D Object → Cube 创建12个方块

再加上指针

GameObject → 3D Object → Cube 创建3个方块

最后加上脚本让他动起来

效果如下

using System;
using UnityEngine;

public class Clock : MonoBehaviour
{
    const float degressPreHour = 30f;
    const float degressPreMinuteSecond = 6f;
    public Transform HourArmTransform;
    public Transform MinusArmTransform;
    public Transform SecondArmTransform;

    // 每秒动一次
    void makeArmRun()
    {
        var time = DateTime.Now;
        HourArmTransform.localRotation = Quaternion.Euler(0, time.Hour * degressPreHour, 0);
        MinusArmTransform.localRotation = Quaternion.Euler(0, time.Minute * degressPreMinuteSecond, 0);
        SecondArmTransform.localRotation = Quaternion.Euler(0, time.Second * degressPreMinuteSecond, 0);
    }
    // 一直都动
    void makeArmRunContinuous()
    {
        var time = DateTime.Now.TimeOfDay;
        HourArmTransform.localRotation = Quaternion.Euler(0, (float)time.TotalHours * degressPreHour, 0);
        MinusArmTransform.localRotation = Quaternion.Euler(0, (float)time.TotalMinutes * degressPreMinuteSecond, 0);
        SecondArmTransform.localRotation = Quaternion.Euler(0, (float)time.TotalSeconds * degressPreMinuteSecond, 0);
    }  

    // Update is called once per frame
    void Update()
    {
        //makeArmRun();
        makeArmRunContinuous();

    }
}