【Unity】实现轮盘抽奖

简介

示例一：使用协程完成轮盘转动

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class Lunpan : MonoBehaviour
{[Tooltip("轮盘节点")]public Transform Roulette;[Tooltip("轮盘旋转的圈数")]public int RotateNumber = 4;//[Tooltip("轮盘需要旋转的度数")]private float degrees = 0;[Tooltip("轮盘旋转初速度")]public int RotateSpeed = 500;//[Tooltip("当前轮盘旋转速度")]private float curRotateSpeed = 0;[Tooltip("减速度")]public float deceleration = 3;[Tooltip("最低速度")]public float minSpeed = 50;[Tooltip("轮盘剩余旋转多少时开始减速")]public float surRotate = 720;[Tooltip("轮盘中物体的数量")]public int All = 6;[Tooltip("旋转停止的位置")]public int selectedIndex = 1;[Tooltip("精准角度")]public Boolean enblePrecise = false;private void Start(){//每秒的帧率改为60（不是必要）Application.targetFrameRate = 60;}/// <summary>/// 开始转动/// </summary>public void StartRoulette(){this.curRotateSpeed = this.RotateSpeed;StartCoroutine(RotateRoulette());}IEnumerator RotateRoulette(){//存储每帧需要旋转的角度float curRotate = 0;//计算轮盘总需要旋转的角度this.degrees = this.RotateNumber * 360 - ((this.selectedIndex - 1) * 360) / this.All - (360 - this.Roulette.eulerAngles.z);while (this.degrees > 0){//计算此帧需要旋转的角度curRotate = Time.deltaTime * this.curRotateSpeed;//精准到指定角度if (this.enblePrecise && curRotate > this.degrees){if (this.curRotateSpeed >= this.minSpeed){//速度减半this.curRotateSpeed = this.minSpeed / 2;curRotate = Time.deltaTime * this.curRotateSpeed;if (curRotate > this.degrees){curRotate = this.degrees;}}else{curRotate = this.degrees;}}//减速if (this.curRotateSpeed > this.minSpeed && this.degrees < this.surRotate){this.curRotateSpeed -= deceleration;}//开始旋转this.Roulette.Rotate(Vector3.back * curRotate);this.degrees -= curRotate;yield return null;}yield return null;}}

示例二：不使用协程实现轮盘转动

using System;
using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;public class LunpanController : MonoBehaviour
{[Tooltip("轮盘节点")]public Transform Roulette;[Tooltip("轮盘旋转的圈数")]public int RotateNumber = 4;//[Tooltip("轮盘需要旋转的度数")]private float degrees = 0;[Tooltip("轮盘旋转初速度")]public int RotateSpeed = 500;//[Tooltip("当前轮盘旋转速度")]private float curRotateSpeed = 0;[Tooltip("减速度")]public float deceleration = 3;[Tooltip("最低速度")]public float minSpeed = 50;[Tooltip("轮盘剩余旋转多少时开始减速")]public float surRotate = 720;[Tooltip("轮盘中物体的数量")]public int All = 6;[Tooltip("旋转停止的位置")]public int selectedIndex = 1;[Tooltip("精准角度")]public Boolean enblePrecise = false;//开启轮盘转动private Boolean enbleLunpan = false;private void Start(){//每秒的帧率改为60（不是必要）Application.targetFrameRate = 60;}private void Update(){if (this.enbleLunpan){//存储每帧需要旋转的角度float curRotate = 0;if (this.degrees > 0){//计算此帧需要旋转的角度curRotate = Time.deltaTime * this.curRotateSpeed;//精准到指定角度if (this.enblePrecise && curRotate > this.degrees){if (this.curRotateSpeed >= this.minSpeed){//速度减半this.curRotateSpeed = this.minSpeed / 2;curRotate = Time.deltaTime * this.curRotateSpeed;if (curRotate > this.degrees){curRotate = this.degrees;}}else{curRotate = this.degrees;}}//减速if (this.curRotateSpeed > this.minSpeed && this.degrees < this.surRotate){this.curRotateSpeed -= deceleration;}//开始旋转this.Roulette.Rotate(Vector3.back * curRotate);this.degrees -= curRotate;if(this.degrees <= 0){this.enbleLunpan = false;}}}}/// <summary>/// 开始转动/// </summary>public void StartRoulette(){this.curRotateSpeed = this.RotateSpeed;//计算轮盘总需要旋转的角度this.degrees = this.RotateNumber * 360 - ((this.selectedIndex - 1) * 360) / this.All - (360 - this.Roulette.eulerAngles.z);this.enbleLunpan = true;}}

演示效果：