使用Unity调用派样机技术小结

距离这个开发这个项目已经过去差不多两年时间了，今天我闲来无事清理电脑里项目的时候无意看到了这个项目。已经都过去将近两年时间了，时光荏苒啊！两年前的自己也是一个冲动的年轻人，拼了命的做项目，现在想想自己，年轻人还是真年轻呀。算了，废话不多说，今天在这里总结一下调用派样机的开发流程。

一、需求梳理

当时公司让实现一个什么样的功能呐？就是在派样机（类似于饮料自动购物机那种机器）上的电脑上，开发一款Unity程序，这款程序上有一个二维码，用户用微信扫一扫扫这个二维码，这时用户的手机上就会出现一个互动的小程序，用户互动完成后，服务器判断用户互动完成，给派样机的Unity程序发一个网络指令。Unity程序收到该指令后，使用串口通信给派样机发一个指令，派样机硬件收到该指令后，即调用硬件推出一个小礼物，送给用户。

这个项目不是什么很复杂的项目，这里面有两个难点。1.获取服务器传过来的信号，进行判断。2.判断完毕服务器的信号后，调用派样机，调用硬件进行派样。只要开发完成这两个功能后，这个项目就算是完成了。

二、开发步骤

1．首先在Unity中创建UI，将二维码贴在Unity的程序里的UI上，UI如下图所示。

2.开发获取服务器指令功能，并且进行判断，如果获取到正确的信息，即对派样机发送派样指令，代码如下。

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;
using Newtonsoft.Json;
using UnityEngine.UI;public class HttpNet : MonoBehaviour
{Action callback;/// <summary>/// 派样机字符类/// </summary>public ComManager comManager;// Start is called before the first frame updatevoid Start(){callback += Dispchater;StartCoroutine(GetData(callback));}private void Dispchater(){//Debug.Log("掉小样！");comManager.DemoMechineSendCom();}//加载路径图片IEnumerator GetData(Action action)//Action action{while (true){yield return new WaitForSeconds(2.0f);UnityWebRequest unityWebRequest = UnityWebRequest.Get("https://www.brandxspace.com/development/sendPrototype/getPrototypeState?flag=0");//UnityWebRequest unityWebRequest = UnityWebRequest.Get(jsonUrl);yield return unityWebRequest.SendWebRequest();if (!unityWebRequest.isNetworkError){string data = unityWebRequest.downloadHandler.text;Data d = JsonConvert.DeserializeObject<Data>(data);if (d != null){Debug.Log(data + "------");if (d.status == "1"){//掉小样if (action != null){action();}}}}}}
}
public class Data
{public string status;public String message;public object data;
}

3.开发调用派样机派样功能，该功能主要使用的是串口通信开发，如果对串口通信开发很熟悉的话这个也是十分简单的功能，主要是通过代码设置派样的顺序和速率，代码如下：
（1）CRC.CS

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;public class CRC
{#region  CRC16public static byte[] CRC16(byte[] data){int len = data.Length;if (len > 0){ushort crc = 0xFFFF;for (int i = 0; i < len; i++){crc = (ushort)(crc ^ (data[i]));for (int j = 0; j < 8; j++){crc = (crc & 1) != 0 ? (ushort)((crc >> 1) ^ 0xA001) : (ushort)(crc >> 1);}}byte hi = (byte)((crc & 0xFF00) >> 8);  //高位置byte lo = (byte)(crc & 0x00FF);         //低位置return new byte[] { hi, lo };}return new byte[] { 0, 0 };}#endregion#region  ToCRC16public static string ToCRC16(string content){return ToCRC16(content, Encoding.UTF8);}public static string ToCRC16(string content, bool isReverse){return ToCRC16(content, Encoding.UTF8, isReverse);}public static string ToCRC16(string content, Encoding encoding){return ByteToString(CRC16(encoding.GetBytes(content)), true);}public static string ToCRC16(string content, Encoding encoding, bool isReverse){return ByteToString(CRC16(encoding.GetBytes(content)), isReverse);}public static string ToCRC16(byte[] data){return ByteToString(CRC16(data), true);}public static string ToCRC16(byte[] data, bool isReverse){return ByteToString(CRC16(data), isReverse);}#endregion#region  ToModbusCRC16public static string ToModbusCRC16(string s){return ToModbusCRC16(s, true);}public static string ToModbusCRC16(string s, bool isReverse){return ByteToString(CRC16(StringToHexByte(s)), isReverse);}public static string ToModbusCRC16(byte[] data){return ToModbusCRC16(data, true);}public static string ToModbusCRC16(byte[] data, bool isReverse){return ByteToString(CRC16(data), isReverse);}#endregion#region  ByteToStringpublic static string ByteToString(byte[] arr, bool isReverse){try{byte hi = arr[0], lo = arr[1];return Convert.ToString(isReverse ? hi + lo * 0x100 : hi * 0x100 + lo, 16).ToUpper().PadLeft(4, '0');}catch (Exception ex) { throw (ex); }}public static string ByteToString(byte[] arr){try{return ByteToString(arr, true);}catch (Exception ex) { throw (ex); }}#endregion#region  StringToHexStringpublic static string StringToHexString(string str){StringBuilder s = new StringBuilder();foreach (short c in str.ToCharArray()){s.Append(c.ToString("X4"));}return s.ToString();}#endregion#region  StringToHexByteprivate static string ConvertChinese(string str){StringBuilder s = new StringBuilder();foreach (short c in str.ToCharArray()){if (c <= 0 || c >= 127){s.Append(c.ToString("X4"));}else{s.Append((char)c);}}return s.ToString();}private static string FilterChinese(string str){StringBuilder s = new StringBuilder();foreach (short c in str.ToCharArray()){if (c > 0 && c < 127){s.Append((char)c);}}return s.ToString();}/// <summary>/// 字符串转16进制字符数组/// </summary>/// <param name="hex"></param>/// <returns></returns>public static byte[] StringToHexByte(string str){return StringToHexByte(str, false);}/// <summary>/// 字符串转16进制字符数组/// </summary>/// <param name="str"></param>/// <param name="isFilterChinese">是否过滤掉中文字符</param>/// <returns></returns>public static byte[] StringToHexByte(string str, bool isFilterChinese){string hex = isFilterChinese ? FilterChinese(str) : ConvertChinese(str);//清除所有空格hex = hex.Replace(" ", "");//若字符个数为奇数，补一个0hex += hex.Length % 2 != 0 ? "0" : "";byte[] result = new byte[hex.Length / 2];for (int i = 0, c = result.Length; i < c; i++){result[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);}return result;}#endregion}

(2)ComManager.cs

using UnityEngine;
using System.Collections;
using System;
using System.Threading;
using System.Collections.Generic;
using System.IO.Ports;public class ComManager : MonoBehaviour
{//public ComManager instance;//端口号string com2 = "";private SerialPort sp2;//波特率private int baudRate;public float timer = 0.1f;//private bool isShinning = false;//配置文件管理类public ConfigTest configTest;//private void Awake()//{//instance = this;//}void Start(){//string com2 = "COM7";com2 = configTest.dic["端口号"]["portName"];baudRate = int.Parse(configTest.dic["波特率"]["baudRate"]);//row = 8;row = int.Parse(configTest.dic["参数"]["row"]);//column = 4;column = int.Parse(configTest.dic["参数"]["column"]);//depth = 5;depth = int.Parse(configTest.dic["参数"]["depth"]);mainCount = int.Parse(configTest.dic["参数"]["mainCount"]);StartCoroutine(StartCom());}IEnumerator StartCom(){yield return new WaitForSeconds(0.1f);sp2 = new SerialPort(com2, baudRate, Parity.None, 8, StopBits.One);if (!sp2.IsOpen){sp2.Open();}}/// <summary>/// 派样机串口/// </summary>/// <param name="data"></param>private void SendDemoMechineData(byte[] data){if (sp2.IsOpen){sp2.Write(data, 0, data.Length);}}void OnDisable(){if (sp2.IsOpen){sp2.Close();}}private int row;//8private int column;//5private int depth;//10private int mainCount = 40;//总数private static int index = 0;public void DemoMechineSendCom(){int tempRow = index % row; //第几个int tempColumn = (index / row) % row; //第几行int tempdepth = index / (row * column) % depth;Debug.Log(index + " row: " + tempRow + "col: " + tempColumn + "depth " + tempdepth);string pos = tempColumn.ToString("0") + tempRow.ToString("0");string corPos = System.Convert.ToString(int.Parse(pos),16).PadLeft(2,'0');string data = "0105"+ corPos+ "030000000000000000000000000000";byte[] byteData = CRC.StringToHexByte(data);byte[] crcByteData = CRC.CRC16(byteData);//Debug.Log(CRC.ByteToString(crcByteData));data += CRC.ByteToString(crcByteData);//Debug.Log(data);byte[] byteDatas = CRC.StringToHexByte(data);SendDemoMechineData(byteDatas);index++;if (index >= mainCount){index = 0;}}
}

三、小结

就这样，派样机的功能就基本开发完成了。虽然这个程序的功能十分简单，但是用处很大，创作不易，如果喜欢文章，请点个赞。另外安利一波本人新开的网店，如果有什么需求自己做的费劲，可以在网店联系我，我会尽力帮助大家，希望大家支持一下。网店地址：https://m.tb.cn/h.fRFp7F4?sm=8c0c06 小程工作室68。