Arduino+Unity3D做自己的游戏世界 DF创客社区

本帖最后由 maker_王于 2016-12-9 19:47 编辑

看了好长一段时间的U3D，尝试用Arduino和Unity进行通信
http://v.youku.com/v_show/id_XMT ... m=a2hzp.8253869.0.0

虽然能够通信了，不过延时的感觉还是有的
如果时间来得及的话，我还会放一个第三人称的游戏视频

下面是U3D的串口通信脚本，用C#写的，结合了网上还有资料书写的
[mw_shl_code=csharp,true]using UnityEngine;
using System.Collections;
using System.IO;
using System;
using System.IO.Ports;
using System.Threading;
using System.Collections.Generic;

public class SerialPortTest : MonoBehaviour
{
private SerialPort _serialport;
private Queue<string> queueDataPool;
private Thread tPort;
private Thread tPortDeal;
private string strOutPool = string.Empty;
bool _start;

private float Arduino_X;
private float Arduino_Y;
private float Arduino_Z;

public float AX { get { return (Arduino_X-512)>5? Mathf.Clamp01((float)Arduino_X / 512.0f - 1.0f): -Mathf.Clamp01(1.0f - (float)Arduino_X / 512.0f); } }
public float AY { get { return (Arduino_Y-512)>5? Mathf.Clamp01((float)Arduino_Y / 512.0f - 1.0f) : -Mathf.Clamp01(1.0f - (float)Arduino_Y / 512.0f); } }
public float AZ { get { return Arduino_Z; } }
void Start()
{
      queueDataPool = new Queue<string>();
      _serialport = new SerialPort("COM3", 9600, Parity.None, 8, StopBits.One);
      try
      {
         _serialport.Open();
      }
      catch (Exception _ex)
      {
         Debug.Log(_ex);
      }
      tPort = new Thread(DealData);
      tPort.Start();
      tPortDeal = new Thread(ReceiveData);
      tPortDeal.Start();
      _start = false;
}
private void FixedUpdate()
{
      if (Time.frameCount % 120 == 0) System.GC.Collect();
      if (!tPort.IsAlive)
      {
         tPort = new Thread(DealData);
         tPort.Start();
      }
      if (!tPortDeal.IsAlive)
      {
         tPortDeal = new Thread(ReceiveData);
         tPortDeal.Start();
      }
}
private void ReceiveData()
{
      try
      {
         Byte[] buf = new Byte[1];
         string sbReadline2str = string.Empty;
         if (_serialport.IsOpen)
         {
            _serialport.Read(buf, 0, 1);
            //Debug.Log(System.Text.Encoding.Default.GetString(buf));
         }
         if (buf.Length == 0) return;
         if (buf != null)
         {
            for (int i = 0; i < buf.Length; i++)
            {
                  string str = System.Text.Encoding.Default.GetString(buf);
                  if (str == "(") _start = true;
                  else sbReadline2str += str;
                  queueDataPool.Enqueue(sbReadline2str);
                  //Debug.Log(sbReadline2str);
            }
         }
      }
      catch (Exception _ex)
      {
         Debug.Log(_ex);
      }
}
private void DealData()
{
      while (queueDataPool.Count != 0)
      {
         if (_start)
         {
            for (int i = 0; i < queueDataPool.Count; i++)
            {
                  string str = queueDataPool.Dequeue();
                  if (str == ")")
                  {
                     //Debug.Log(strOutPool);
                     string[] sArray = strOutPool.Split(',');
                     Arduino_X = float .Parse(sArray[0]);
                     Arduino_Y = float.Parse(sArray[1]);
                     Arduino_Z = float.Parse(sArray[2]);
                     Debug.Log("X:" + Arduino_X + "," + "Y:" + Arduino_Y + "," + "Z:" + Arduino_Z);
                     strOutPool = string.Empty;
                     _start = false;
                  }
                  else strOutPool += str;
            }
         }
      }
}

private void SendSerialPortData(string Data)
{
      if (_serialport.IsOpen)
      {
         _serialport.WriteLine(Data);
      }
}
private void OnApplicationQuit()
{
      _serialport.Close();
}
}
[/mw_shl_code]

下面是Arduino的程序：
[mw_shl_code=c,true]void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.print("(");
  Serial.print(analogRead(A0));
  Serial.print(",");
  Serial.print(analogRead(A1));
  Serial.print(",");
  Serial.print(analogRead(A2));
  Serial.println(")");
  delay(380);
}[/mw_shl_code]

Arduino和U3D的串口通信有三种方法实现（都是基于C#中的SerialPort），一个是使用unity自身Updata()(这个方法和Arduino的loop()有点类似)，另外一个是用协程Coroutines（这个传输速度稍快），随后一个是使用线程Theard(速度是最快的)。
我上面的脚本中使用的线程，可是需要延时才能接收到正确的数据（这个线程的工作原理还得再看看）