title: collide with the hand to trigger feedback
body: <p>I am beginner in unity 3d programming, I have a project to integrate my feedback device with the virtual reality software (unity3d free version). I use leap motion to make my hand appear on the unity3d, and when the object (ball) touch the hand, it will trigger the feedback device to send the information.</p>
  
  <p>I built the dll library for my feedback device, I have tried in c# and working.</p>
  
  <p>I use onCollisionEnter to trigger the event. Here is my script:</p>
  
  <pre><code>using UnityEngine;
  using System.Collections;
  using System.Runtime.InteropServices; 
  
  public class trigger : MonoBehaviour {  
  [DllImport("tensLibs.dll", EntryPoint="tens_init")]
  public static extern int tens_init ([MarshalAsAttribute(UnmanagedType.LPStr)]string port);
  [DllImport("tensLibs.dll", EntryPoint = "tens_shutdown")]
  public static extern void tens_shutdown();
  
  [DllImport("tensLibs.dll", EntryPoint = "tens_settarget")]
  public static extern int tens_settarget(byte id);
  
   [DllImport("tensLibs.dll", EntryPoint = "tens_write")]
   public static extern int tens_write([MarshalAsAttribute(UnmanagedType.LPStr)]string buf, int count);
  
  [DllImport("tensLibs.dll", EntryPoint = "tens_enable")]
   public static extern int tens_enable(byte supply_on, byte bridge_on);
  
   [DllImport("tensLibs.dll", EntryPoint = "tens_power")]
  public static extern int tens_power(byte power);
  
  [DllImport("tensLibs.dll", EntryPoint = "tens_freq")]
  public static extern int tens_freq(byte freq);
  
   [DllImport("tensLibs.dll", EntryPoint = "tens_chargerate")]
   public static extern int tens_chargerate(byte rate);
  
   [DllImport("tensLibs.dll", EntryPoint = "tens_writeconfig")]
   public static extern int tens_writeconfig();
  
   [DllImport("tensLibs.dll", EntryPoint = "tens_envs")]
  public static extern int tens_envs(byte distance);
  
  void OnCollisionEnter (Collision col) {
  
      if (col.gameObject.name == "bone1" || col.gameObject.name == "bone2" || col.gameObject.name == "bone3" || col.gameObject.name == "palm") {
  
           if (tens_init("COM8") == 1){
               Debug.Log ("Com 8 is initiated"); }
          else {
              Debug.Log ("Com 8 does not exists"); }
  
  
          tens_settarget(0); //send to device 0
          System.Threading.Thread.Sleep(10);
           tens_envs(150); //send value
           System.Threading.Thread.Sleep(10);
          tens_shutdown(); //close the com
       }
  
       }
  </code></pre>
  
  <p>The problem is, when I touch the ball, the event just showing me that the tens_init is working by appearing <code>Com 8 is initiated</code> but the rest of the program are not execute (I think because do not work).</p>
  
  <p>Do I make mistake with the script?</p>
  
  <p>thank you.</p>