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First, running lantern raffle
Effect: 
- Click the button, according to the demand (probability) calculation of this lucky draw to win items
- Simulate rotation (first accelerating and then decelerating) and stop after a period of time
Scene construction: 
Implementation code:
using System.Collections;
using UnityEngine;
using UnityEngine.UI;
public class RotaryTablePanel : MonoBehaviour
{
// Lucky draw button,
public Button drawBtn;
// Draw pictures parent object
public Transform rewardImgTran;
/ / the aura
public Transform HaloImgTransform;
// Draw pictures
private Transform[] rewardTransArr;
// Default display state
private bool isInitState;
// End of lottery -- end of state, halo does not turn
private bool drawEnd;
/ / the winning
private bool drawWinning;
// Display status time --> control the rotation speed of the halo
private float rewardTime = 0.8 f;
private float rewardTiming = 0;
// Index of the current aura reward
private int haloIndex = 0;
// This time the winning ID
private int rewardIndex = 0;
// Click the lucky draw button
private bool isOnClickPlaying;
void Start()
{
drawBtn.onClick.AddListener(OnClickDrawFun);
rewardTransArr = new Transform[rewardImgTran.childCount];
for (int i = 0; i < rewardImgTran.childCount; i++)
{
rewardTransArr[i] = rewardImgTran.GetChild(i);
}
// Default display time
rewardTime = 0.6 f;
rewardTiming = 0;
drawEnd = false;
drawWinning = false;
isOnClickPlaying = false;
}
void Update()
{
if (drawEnd) return;
// Lucky draw display
rewardTiming += Time.deltaTime;
if (rewardTiming >= rewardTime)
{
rewardTiming = 0;
haloIndex++;
if (haloIndex >= rewardTransArr.Length)
{
haloIndex = 0; } SetHaloPos(haloIndex); }}// Set the halo display position
void SetHaloPos(int index)
{
HaloImgTransform.position = rewardTransArr[index].position;
// win && this ID == win ID
if (drawWinning && index == rewardIndex)
{
isOnClickPlaying = false;
drawEnd = true;
//todo... Display winning items and maintain data --> Note: index is an index
Debug.Log("Congratulations on your winning. The index of the winning item is:" + index + "No."); }}// Click the lucky draw button
void OnClickDrawFun()
{
if(! isOnClickPlaying) {// Select an ID at random
rewardIndex = Random.Range(0, rewardTransArr.Length);
Debug.Log("Lucky draw begins. The random ID of this lucky draw is:" + rewardIndex);
isOnClickPlaying = true;
drawEnd = false;
drawWinning = false; StartCoroutine(StartDrawAni()); }}/// <summary>
///Start the raffle animation
///Fast then slow - adjust the time according to demand
/// </summary>
/// <returns></returns>
IEnumerator StartDrawAni()
{
rewardTime = 0.8 f;
/ / to accelerate
for (int i = 0; i < 7; i++)
{
yield return new WaitForSeconds(0.1 f);
rewardTime -= 0.1 f;
}
yield return new WaitForSeconds(2f);
/ / to slow down
for (int i = 0; i < 5; i++)
{
yield return new WaitForSeconds(0.1 f);
rewardTime += 0.1 f;
}
yield return new WaitForSeconds(1f);
drawWinning = true; }}Copy the codeTwo, the turntable lottery
Effect: 
- Click the button, according to the demand (probability) calculation of this lucky draw to get the item index
- Calculate the required rotation Angle based on the random index
- Simulate rotation and stop at the calculated Angle after a period of time
Scene construction: 
Implementation code:
using UnityEngine;
using UnityEngine.UI;
public class RotaryDrawDemo : MonoBehaviour
{
/ / wheel
public Transform RotateTableTrans;
// Lucky draw button
public Button DrawBtn;
// The number of regions in the turntable --
private int rotateTableNumber = 10;
// Rotate the animation time
private float rotateTime = 3f;
private float rotateTiming = 0f;
/// <summary>
///Target position to be rotated to
/// </summary>
private Quaternion targetAngels = Quaternion.identity;
// Speed of rotation
private float rotateSpeed = 20;
// Simulate the selection time of the lottery
private float RotateTime = 3f;
/// <summary>
///Whether to start raffle rotation
/// </summary>
private bool isStartRotate = false;
// This time the winning ID
private int rewardIndex = 0;
void Start()
{
DrawBtn.onClick.AddListener(OnClickDrawFun);
}
void Update()
{
if(! isStartRotate)return;
rotateTiming += Time.deltaTime;
// The animation time has passed
if (rotateTiming >= RotateTime)
{
RotateTableTrans.Rotate(Vector3.back * 2);
// Calculate the Angle between the current rotation Angle and the target Angle
if (Quaternion.Angle(RotateTableTrans.rotation, targetAngels) <= 2)
{
// Set the target Angle
RotateTableTrans.rotation = targetAngels;
// The rotation stops
isStartRotate = false;
// todo... Prize presentation, data maintenance
Debug.Log("***** congratulations or prize, prize index:" + rewardIndex + ", the turntable Angle is:"
+ RotateTableTrans.localEulerAngles.z + "* * * * *"); }}else
{
// Turn the dial (back = clockwise, forward = counterclockwise)
RotateTableTrans.Rotate(Vector3.back * 10); }}// Click the lucky draw button
void OnClickDrawFun()
{
if(! isStartRotate) {// Start the rotation
isStartRotate = true;
rotateTiming = 0;
// Random to the number of areas on the dial
rewardIndex = Random.Range(0, rotateTableNumber);
RotateTableNumber;
float targetRot = rewardIndex * 36;
// Set the target location
targetAngels = Quaternion.Euler(0.0, targetRot);
Debug.Log("----- start the lottery to random areas, the index is :" + rewardIndex + ", the Angle is: + targetRot + "-- -- -- -- --"); }}}Copy the codeThree, slot machine raffle
Effect: 
If there is no understanding of the place, you can comment consultation, or click the link to view the example source code: one, two example source code link without integral students can V letter search “development students stay”, reply to the “Unity lottery” project source code.