import java.awt.*;
import java.awt.event.*;
import java.awt.AWTEvent;
import java.util.Enumeration;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.geometry.Sphere;
/*
  Mi clase para controlar los Tankes
*/
class Movimiento extends Behavior{
  final static int HOMBRO=0;
  final static int CODO=1;
  final static int MUNECA=2;
  final static int PISO=3;
  private TransformGroup piso,hombro,codo,muneca;
  private Transform3D tr;
  private Transform3D rox,roy,roz;
  private WakeupOnAWTEvent trigger;
  private double ahom,acod,amun;
  private double bhom,bcod,bmun;
  private double ypiso;
  private int place;
  private Appearance pint1,pint2,pint3,pint4;
  private Material mat1,mat2;
  public Movimiento(TransformGroup p,TransformGroup h,TransformGroup c,TransformGroup m,
                     Appearance p1,Appearance p2,Appearance p3,Appearance p4,Material m1,Material m2){
    piso=p;
    hombro=h;
    codo=c;
    muneca=m;
    pint1=p1;
    pint2=p2;
    pint3=p3;
    pint4=p4;
    mat1=m1;
    mat2=m2;
    tr=new Transform3D();
    rox=new Transform3D();
    roy=new Transform3D();
    roz=new Transform3D();
    trigger=new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
    place=PISO;
  }
  public void initialize(){
    this.wakeupOn(trigger);
  }
  public void processStimulus(Enumeration criteria){
    while (criteria.hasMoreElements()) {
	  	WakeupCriterion wakeup = (WakeupCriterion) criteria.nextElement();
      if(wakeup instanceof WakeupOnAWTEvent){
        AWTEvent[] arr=((WakeupOnAWTEvent)(wakeup)).getAWTEvent();
        KeyEvent ke=(KeyEvent)arr[0];
        switch(ke.getKeyCode()){
          case KeyEvent.VK_ENTER: if(place==PISO){
                                    pint1.setMaterial(mat1);
                                    pint2.setMaterial(mat2);
                                    place=HOMBRO;
                                  }
                                  else if(place==HOMBRO){
                                    pint2.setMaterial(mat1);
                                    pint3.setMaterial(mat2);
                                    place=CODO;
                                  }
                                  else if(place==CODO){
                                    pint3.setMaterial(mat1);
                                    pint4.setMaterial(mat2);
                                    place=MUNECA;
                                  }
                                  else{
                                    pint4.setMaterial(mat1);
                                    pint1.setMaterial(mat2);
                                    place=PISO;
                                  }
                                  break;
          case KeyEvent.VK_UP:    if(place==HOMBRO){
                                    if(bhom>0)
                                      bhom-=Math.PI/20.0;
                                  }
                                  else if(place==CODO){
                                    if(bcod>0)
                                      bcod-=Math.PI/20.0;
                                  }
                                  break;
          case KeyEvent.VK_DOWN:  if(place==HOMBRO){
                                    if(bhom<Math.PI/2.0)
                                      bhom+=Math.PI/20.0;
                                  }
                                  else if(place==CODO){
                                    if(bcod<Math.PI/2.0)
                                      bcod+=Math.PI/20.0;
                                  }
                                  break;
          case KeyEvent.VK_LEFT:  if(place==PISO){
                                    if(ypiso>-2)
                                      ypiso-=0.02;
                                  }
                                  else if(place==HOMBRO){
                                    if(ahom>-Math.PI/2.0)
                                      ahom-=Math.PI/20.0;
                                  }
                                  else if(place==CODO){
                                    if(acod>-Math.PI/2.0)
                                      acod-=Math.PI/20.0;
                                  }
                                  else{
                                    if(amun>-Math.PI/2.0)
                                      amun-=Math.PI/20.0;
                                  }
                                  break;
          case KeyEvent.VK_RIGHT: if(place==PISO){
                                    if(ypiso<2)
                                      ypiso+=0.02;
                                  }
                                  else if(place==HOMBRO){
                                    if(ahom<Math.PI/2.0)
                                      ahom+=Math.PI/20.0;
                                  }
                                  else if(place==CODO){
                                    if(acod<Math.PI/2.0)
                                      acod+=Math.PI/20.0;
                                  }
                                  else{
                                    if(amun<Math.PI/2.0)
                                      amun+=Math.PI/20.0;
                                  }
                                  break;
          default:  break;
        }
      }
    }
    //modificar los Tgroups
    tr.set(new Vector3f((float)ypiso,0.0f,0.0f));
    piso.setTransform(tr);
    rox.rotX(bhom);
    roz.rotZ(ahom);
    roz.mul(rox);
    hombro.setTransform(roz);
    rox.rotX(bcod);
    roz.rotZ(acod);
    roz.mul(rox);
    codo.setTransform(roz);
    roz.rotZ(amun);
    muneca.setTransform(roz);
    this.wakeupOn(trigger);
  }
}