class vehicle{
  int xPos;
  int yPos;
  int direction;
vehicle(int tempYpos){
  xPos = 10;
  yPos = tempYpos;
  direction = 0;
  }
 
void display(){
  fill(0,0,255);
  rect(xPos,yPos,xPos+10,yPos+10);
}
void move(){
if(direction == 0){
  //East
  xPos++;
}

else if(direction == 1){
  //West
  xPos--;
}
else if(direction == 2){
//North
yPos++;
}
else if(direction == 3){
//South
yPos--;
}
}
void turnSouth(){
direction = 3;
}
void turnNorth(){
direction = 2;
}
void turnEast(){
direction = 0;
}
void turnWest(){
direction = 1;
}
}