Hi everyone.
I'm quite a newbie in programming, and just learned processing for about 2 months. I'm currently working on a marker based augmented reality program using Nyartoolkit for my school project. The idea is to display a 3d models, texts (a name for each model), and play a sound for each model that can be re-triggered with a key press. So with my very limited knowledge on programming (not to mention bad English) I wrote a code based on many tutorials and processing references. The code itself works fine as I wanted, but as you can see, it's a mess and inefficient, especially the audio sample trigger part. I need the trigger so the sound do not overlap with each other when a key is pressed, but all i can do is to write all the boolean trigger for each marker tracking. I already tried to simplify it with boolean array, but I can't get it to work. I plan to put more than 20 models so I think the code will be too much. Please help me to use boolean array, or is there a better way?
By the way I use processing 1.2. and here's the code:

1. import codeanticode.gsvideo.*;
   import jp.nyatla.nyar4psg.*;
   import processing.opengl.*;
   import javax.media.opengl.*;
   import saito.objloader.*;
   import ddf.minim.*;
   Minim minim;
   
   //sound variable
   AudioSample sndGajah;
   AudioSample sndBadak;
   AudioSample sndPenguin;
   AudioSample sndFlamingo;
   AudioSample sndKura;
   AudioSample sndKelinci;
   AudioSample sndDeer;
   
   AudioPlayer plgajah;
   AudioPlayer plbadak;
   AudioPlayer plpenguin;
   AudioPlayer plflamingo;
   AudioPlayer plkura;
   AudioPlayer plkelinci;
   AudioPlayer pldeer;
   
   GSCapture cam;
   NyARMultiBoard nya;
   OBJModel modelgajah ;
   OBJModel modelbadak ;
   OBJModel modelpenguin;
   OBJModel modelflamingo;
   OBJModel modelkura;
   OBJModel modelkelinci;
   OBJModel modeldeer;
   PFont fontA;
   label lbl = new label();
   teks nama = new teks();
   //sound TRIGGER
   boolean trgrGajah;
   boolean trgrBadak;
   boolean trgrPenguin;
   boolean trgrFlamingo;
   boolean trgrKura;
   boolean trgrKelinci;
   boolean trgrDeer;
   
   
   void setup() {
   
     size(640,480,P3D);
     frame.setResizable(true);
     colorMode(RGB, 100);
     cam=new GSCapture(this,width,height);
     String[] patts = {"patt.1", "patt.2", "patt.3", "patt.4", "patt.5", "patt.6", "patt.7"};
     double[] widths = {80,80,80,80,80,80,80};
     nya=new NyARMultiBoard(this,width,height,"camera_para.dat",patts,widths);
     print(nya.VERSION);
   
     nya.gsThreshold=120;//(0<n<255) default=110
   
     nya.cfThreshold=0.5;//(0.0<n<1.0) default=0.4
     // load audio file
     minim = new Minim(this);
     sndGajah = minim.loadSample("elephant.mp3", 2048);
     sndBadak = minim.loadSample("rhinoceros2.mp3", 2048);
     sndPenguin = minim.loadSample("penguin.mp3", 2048);
     sndFlamingo = minim.loadSample("flamingo.mp3", 2048);
     sndKura = minim.loadSample("turtle.mp3", 2048);
     sndKelinci = minim.loadSample("rabbit.mp3", 2048);
     sndDeer = minim.loadSample("deer.mp3", 2048);
    
     plgajah = minim.loadFile("elephant.mp3", 2048);
     plbadak = minim.loadFile("rhinoceros2.mp3", 2048);
     plpenguin = minim.loadFile("penguin.mp3", 2048);
     plflamingo = minim.loadFile("flamingo.mp3", 2048);
     plkura = minim.loadFile("turtle.mp3", 2048);
     plkelinci = minim.loadFile("rabbit.mp3", 2048);
     pldeer = minim.loadFile("deer.mp3", 2048);
    
     fontA = loadFont("OneTrickPonyOT-56.vlw");
     textFont(fontA,56);
    
     //load model
     modelgajah = new OBJModel(this, "gajah.obj", "absolute", TRIANGLES);
     modelgajah.enableDebug();
     modelgajah.scale(1);
     modelgajah.translateToCenter();
     modelgajah.enableTexture();
    
     modelbadak = new OBJModel(this, "badak2.obj", "absolute", TRIANGLES);
     modelbadak.enableDebug();
     modelbadak.scale(1);
     modelbadak.translateToCenter();
     modelbadak.enableTexture();
     modelbadak.enableMaterial() ;
    
     modelpenguin = new OBJModel(this, "penguin.obj", "absolute", TRIANGLES);
     modelpenguin.enableDebug();
     modelpenguin.scale(1);
     modelpenguin.translateToCenter();
     modelpenguin.enableTexture();
     modelpenguin.enableMaterial() ;
    
       modelflamingo = new OBJModel(this, "flamingo.obj", "absolute", TRIANGLES);
     modelflamingo.enableDebug();
     modelflamingo.scale(1);
     modelflamingo.translateToCenter();
     modelflamingo.enableTexture();
     modelflamingo.enableMaterial() ;
   
       modelkura = new OBJModel(this, "kura.obj", "absolute", TRIANGLES);
     modelkura.enableDebug();
     modelkura.scale(3);
     modelkura.translateToCenter();
     modelkura.enableTexture();
     modelkura.enableMaterial() ;
    
       modelkelinci = new OBJModel(this, "kelinci.obj", "absolute", TRIANGLES);
     modelkelinci.enableDebug();
     modelkelinci.scale(1);
     modelkelinci.translateToCenter();
     modelkelinci.enableTexture();
     modelkelinci.enableMaterial() ;
    
       modeldeer = new OBJModel(this, "deer.obj", "absolute", TRIANGLES);
     modeldeer.enableDebug();
     modeldeer.scale(1);
     modeldeer.translateToCenter();
     modeldeer.enableTexture();
     modeldeer.enableMaterial() ;
    
   }
   
   
   void draw() {
   
     if (cam.available() !=true) {
       return;
     }
   
     cam.read();
     hint(DISABLE_DEPTH_TEST);
     image(cam,0,0,width,height);
    
    
     //display label
     lbl.display();
     nama.tksGajah();
     nama.tksBadak();
     nama.tksPenguin();
     nama.tksFlamingo();
     nama.tksKura();
     nama.tksKelinci();
     nama.tksDeer();
    
    
     hint(ENABLE_DEPTH_TEST);
   
     // if *any* markers have been detected this will be true
     if (nya.detect(cam))
     {
       // depth test back on, we're going to draw 3D YEAH!!
       hint(ENABLE_DEPTH_TEST);
       // for all detected markers:
       for (int i=0; i < nya.markers.length; i++)
       {
         if (nya.markers[i].detected)
         {
          // set the model-view transform to that of the marker
          // this will adapt automatically to P3D or OPENGL renderers
          nya.markers[i].beginTransform();
   
          translate(0,0,20);
          // draw gajah
          if (i == 0)
          {
             trgrBadak = false;
             trgrPenguin = false;
             trgrFlamingo = false;
             trgrKura = false;
             trgrKelinci = false;
             trgrDeer = false;
             trgrGajah = true;
             plgajah.play();
             noStroke();
             modelgajah.draw();
             lbl.visible();
             nama.gajahvisible();
                     
          }
          // draw badak
          else if (i == 1)
          {
             trgrGajah = false;
             trgrPenguin = false;
             trgrFlamingo = false;
             trgrKura = false;
             trgrKelinci = false;
             trgrDeer = false;
             trgrBadak = true;
             plbadak.play();
             noStroke();
             modelbadak.draw();
             lbl.visible();
             nama.badakvisible();  
          }
          // draw penguin
          else if (i == 2)
          {
             trgrGajah = false;
             trgrBadak = false;
             trgrFlamingo = false;
             trgrKura = false;
             trgrKelinci = false;
             trgrDeer = false;
             trgrPenguin = true;
             plpenguin.play();
             noStroke();
             modelpenguin.draw();
             lbl.visible();
             nama.penguinvisible();  
          }      
          // draw flamingo
          else if (i == 3)
          {
             trgrGajah = false;
             trgrBadak = false;
             trgrPenguin = false;
             trgrKura = false;
             trgrKelinci = false;
             trgrDeer = false;
             trgrFlamingo = true;
             plflamingo.play();
             noStroke();
             modelflamingo.draw();
             lbl.visible();
             nama.flamingovisible();  
          }
          // draw kura
          else if (i == 4)
          {
             trgrGajah = false;
             trgrBadak = false;
             trgrPenguin = false;
             trgrFlamingo = false;
             trgrKelinci = false;
             trgrDeer = false;
             trgrKura = true;
             plkura.play();
             noStroke();
             modelkura.draw();
             lbl.visible();
             nama.kuravisible();  
          }       
          // draw kelinci
          else if (i == 5)
          {
             trgrGajah = false;
             trgrBadak = false;
             trgrPenguin = false;
             trgrFlamingo = false;
             trgrKura = false;
             trgrDeer = false;
             trgrKelinci = true;
             plkelinci.play();
             noStroke();
             modelkelinci.draw();
             lbl.visible();
             nama.kelincivisible();  
          } 
         
          // draw rusa
          else if (i == 6)
          {
             trgrGajah = false;
             trgrBadak = false;
             trgrPenguin = false;
             trgrFlamingo = false;
             trgrKura = false;
             trgrKelinci = false;
             trgrDeer = true;
             pldeer.play();
             noStroke();
             modeldeer.draw();
             lbl.visible();
             nama.deervisible();  
          }
         
          else {
           
           
          }
          // after drawing marker-relative 3D geometry, we
          // HAVE to end the transform (so now we're back in
          // world space)
          nya.markers[i].endTransform();
         
         }
       }
     }
   
   }
   
   void keyPressed()
   {
     if ((keyPressed == true) && (trgrGajah == true)) sndGajah.trigger();
     if ((keyPressed == true) && (trgrBadak == true)) sndBadak.trigger();
     if ((keyPressed == true) && (trgrPenguin == true)) sndPenguin.trigger();
     if ((keyPressed == true) && (trgrFlamingo == true)) sndFlamingo.trigger();
     if ((keyPressed == true) && (trgrKura == true)) sndKura.trigger();
     if ((keyPressed == true) && (trgrKelinci == true)) sndKelinci.trigger();
     if ((keyPressed == true) && (trgrDeer == true)) sndDeer.trigger();
   }
   
   void stop()
   {
     // always close Minim audio classes when you are done with them
    
     plgajah.close();
     plbadak.close();
     plpenguin.close();
     plflamingo.close();
     plkura.close();
     plkelinci.close();
     pldeer.close();
     sndGajah.stop();
     sndBadak.stop();
     sndPenguin.stop();
     sndFlamingo.stop();
     sndKura.stop();
     sndKelinci.stop();
     sndDeer.stop();
     minim.stop();
    
     super.stop();
   }
   
   

Oh, and there are 2 classes for texts and background label, but I think it's not related so i don't include them.
Thanks very much in advance! (and sorry for my bad english)