Elipse que se mueve

int x=100;

int y=100;

int z=100;

int c=100;


void setup(){


  size(300,300);


}


void draw(){




rect(z,c,100,100);


  ellipse(x,y,200,100);



}

void mousePressed(){

 background(random(0,255),random(0,255),random(0,255));

}

void keyPressed(){



  if(key=='a'){



  fill(random(0,255),random(0,255),random(0,255));
background(random(0,255),random(0,255),random(0,255));


  }



  if(key=='s'){



  fill(random(0,255),random(0,255),random(0,255));
background(random(0,255),random(0,255),random(0,255));


  }
  if(key=='d'){
  fill(random(0,255),random(0,255),random(0,255));
  background(random(0,255),random(0,255),random(0,255));
  }
  if(key=='w'){
  fill(random(0,255),random(0,255),random(0,255));
background(random(0,255),random(0,255),random(0,255));


  }



  if(key=='i'){


background(random(0,255),random(0,255),random(0,255));
    y=y-10;



  }



  if(key=='k'){


background(random(0,255),random(0,255),random(0,255));
    y=y+10;



  }



  if(key=='ñ'){


background(random(0,255),random(0,255),random(0,255));
    x=x-10;



  }



  if(key=='l'){


background(random(0,255),random(0,255),random(0,255));
    x=x+10;



  }

    if(key=='y'){


background(random(0,255),random(0,255),random(0,255));
    c=c-10;



  }



  if(key=='h'){


background(random(0,255),random(0,255),random(0,255));
    c=c+10;



  }



  if(key=='g'){


background(random(0,255),random(0,255),random(0,255));
    z=z-10;



  }



  if(key=='j'){


background(random(0,255),random(0,255),random(0,255));
    z=z+10;



}

}