Hi everyone!

I am expierencing difficulties when I try to let my wonderfull rocket be controlled by altering the pitch and the yaw. But because the rocket experiences gravity, I dont think I can use rotate(). Please correct me if im wrong on that. I have searched a while for the answer, but never found it... so can anyone help? im posting one tab, and a link to the whole package  ;)

Link:
htt p://ww w.fileshost.com/download.php?id=CA159A091
klik on the mouse to let it explode, a and d control the roll and z and x change the x direction of the speed

sorry, can't post an proper url because im new (A)

This is the main part of the code:

Code:

import processing.opengl.*;
float frames = 120;
PVector rocket, engine,  speed;
float friction = 0.99;
float power = 30/frames;
float gravity = 9.81/frames;
float roll = 0;
float pitch = 0;
float yaw = 0;

void setup() {
  size(800,900, OPENGL);
  noStroke();
  rocket = new PVector(0.5*width,height+300,0);
  speed = new PVector(-0.01,1,0.000);
  camera(0.5*width,0.5*height,2000,0.5*width,0.5*height,0,0,1,0);
}

void keyPressed() {
  if(key=='a')
  {
    roll+=TWO_PI/20;
  }
  if(key=='d')
  {
    roll-=TWO_PI/20;
  }
  if(key=='x')
  {
    speed.x+=1;
  }
  if(key=='z')
  {
    speed.x-=1;
  }
}

void draw() {
  background(10); // top-left = -630,-702  top-right = width+630,-702  bottom-left = -630,height+702  bottom-right = width+630,height+702
  fill(255);
  lights();
  if(explosion == 1)
  {
    explode();
  }
  if(fadeout<=0)
  {
    explosion = 1;
  }
  if(explosion == 0)
  {
  rocket.y = height-rocket.y;
  speed.mult(power/speed.mag()+1);
  speed.y-=gravity;
  speed.mult(friction);
  rocket.add(speed);
  rocket.x = ((rocket.x+630)%(width+1260))-630;
  if(rocket.x<-630)
  {
    rocket.x = width+630;
  }
  rocket.y = ((rocket.y+702)%(height+1404))-702;
  if(rocket.y<-702)
  {
    rocket.y = height+702;
  }
  rocket.y = height-rocket.y;
  pushMatrix();
  drawrocket();
  popMatrix();
  }
  smoke();
}