Processing.net help [NEEDED]

Jcbconway

Hello all, I am having some trouble using processing.net.

First example: (This is how i should be initializing new client)

       import processing.net.*; 
        import procontroll.*;
        import java.io.*;

        Client myClient; 

        ControllIO controll;
        ControllDevice device;

        ControllStick leftStick;
        ControllStick rightStick;
        ControllSlider zTrigger;

        ControllButton button;
        float leftStickXval = 0;
        void setup(){
         size(400,400);

          myClient = new Client(this, "192.168.1.66", 1000); 

          controll = ControllIO.getInstance(this);
          controll.printDevices();

          ControllDevice device = controll.getDevice(2);

          println(device.getName()+" has:");

          controll = ControllIO.getInstance(this);

          device = controll.getDevice("Controller (Joytech 360 pad)");
          device.setTolerance(0.05f);


          ControllSlider leftX = device.getSlider(1);
          ControllSlider leftY = device.getSlider(0);

          ControllSlider rightX = device.getSlider(3);
          ControllSlider rightY = device.getSlider(2);

          zTrigger = device.getSlider(4);


          leftStick = new ControllStick(leftX,leftY);
          rightStick = new ControllStick(rightX,rightY);


          button = device.getButton(1);

        }

        float totalX = width;
        float totalY = height;
        void sendData(){
          myClient.write(leftStickXval*100 + "\r\n");
        }
        void draw(){
          background(255);
          fill(0);


          textSize(16);
          text("LeftX:" + leftStick.getX(), 25,25);
          text("LeftY:" + leftStick.getY()*-1, 25,50);

          text("rightX:" + rightStick.getX(), 25,100);
          text("rightY:" + rightStick.getY()*-1, 25,125);

          text("Z Trigger:" + zTrigger.getValue()*-1, 25,175);

          if(leftStickXval != leftStick.getX()){
            leftStickXval = leftStick.getX();
            sendData();
          }
        }

I initialize myClient and then i call sendData from void draw. The first time myClient.write is executed the code works HOWEVER any time after that I get the following error:

java.lang.NullPointerException
    at processing.net.Client.write(Unknown Source)
    at processing.net.Client.write(Unknown Source)
    at Quad_Controll_001.sendData(Quad_Controll_001.java:74)
    at Quad_Controll_001.draw(Quad_Controll_001.java:92)
    at processing.core.PApplet.handleDraw(PApplet.java:2270)
    at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:243)
    at processing.core.PApplet.run(PApplet.java:2141)
    at java.lang.Thread.run(Thread.java:662)

More info (probably irrelevant?) I am using an arduino with a WiFi shield. when i get the error mentioned above I can restart the processing sketch and the arduino will update a value once untill this error occurs. As long as i restart the processing sketch the arduino will update every time without re-set so this suggests that it is problems on the processing side and not the arduino.

Jcbconway

By the way, when I move the myClient = new client(...) into the sendData() method above the myClient.write The code with work except the processing sketch runs VERY slow when executing sendData();

Example:

import processing.net.*; 
import procontroll.*;
import java.io.*;

Client myClient; 

ControllIO controll;
ControllDevice device;

ControllStick leftStick;
ControllStick rightStick;
ControllSlider zTrigger;

ControllButton button;
float leftStickXval = 0;
void setup(){
  size(400,400);



  controll = ControllIO.getInstance(this);
  controll.printDevices();

  ControllDevice device = controll.getDevice(2);

  println(device.getName()+" has:");

  controll = ControllIO.getInstance(this);

  device = controll.getDevice("Controller (Joytech 360 pad)");
  device.setTolerance(0.05f);


  ControllSlider leftX = device.getSlider(1);
  ControllSlider leftY = device.getSlider(0);

  ControllSlider rightX = device.getSlider(3);
  ControllSlider rightY = device.getSlider(2);

  zTrigger = device.getSlider(4);


  leftStick = new ControllStick(leftX,leftY);
  rightStick = new ControllStick(rightX,rightY);


  button = device.getButton(1);

}

float totalX = width;
float totalY = height;
void sendData(){
  myClient = new Client(this, "192.168.1.66", 1000); 
  myClient.write(leftStickXval*100 + "\r\n");
}
void draw(){
  background(255);
  fill(0);


  textSize(16);
  text("LeftX:" + leftStick.getX(), 25,25);
  text("LeftY:" + leftStick.getY()*-1, 25,50);

  text("rightX:" + rightStick.getX(), 25,100);
  text("rightY:" + rightStick.getY()*-1, 25,125);

  text("Z Trigger:" + zTrigger.getValue()*-1, 25,175);

  if(leftStickXval != leftStick.getX()){
    leftStickXval = leftStick.getX();
    sendData();
  }
}