import controlP5.*;
import processing.serial.*;

PImage img;
int iW2, iH2;
int posX, posY;
int velocity, angle;
Serial serial;
String jostick;
void setup() {
   serial = new Serial (this, serial.list ()[0], 9600);
   // tamaño de la ventana
  size(800, 600);
  // carga la imagen en la variable
  img = loadImage("spaceship02.gif");
  iW2 = img.width/2;
  iH2 = img.height/2;
  posX = (width/2)-iW2;
  posY = (height/2)-iH2;
  velocity = -5;
  angle = 0;
}

void draw() {
  // limpia la ventana
  background(0);
  posX += velocity * sin(radians(angle));
  if (posX-iW2 < 0) posX = width;
  if (posX-iW2 > width) posX = iW2;
  posY += velocity * cos(radians(angle));
  if (posY-iH2 < 0) posY = height;
  if (posY-iH2 > height) posY = iH2;
  // dibuja la imagen
  pushMatrix();
  translate(posX-iW2, posY-iH2);
  rotate(radians(-angle));
  image(img, -iW2, -iH2);
  popMatrix();
  CONTROL();

}
 // teclado
void keyPressed() {
  if (key == CODED)
  {
    if (keyCode == UP)
    {
      velocity -= 5;
    }
    if (keyCode == DOWN)
    {
      velocity += 5;
    }
    if (keyCode == LEFT){
      angle += 5;    }
    if (keyCode == RIGHT){
      angle -= 5;}
  }
 }
 void CONTROL(){

  if ( serial.available() > 0)
    {
      // If data is available,
      jostick = serial.readString()+"";
     println(jostick);
    }

      if(jostick==null){
        jostick="0";
      }

      if(jostick.indexOf("a")>=0){//Arriba
        velocity -= 5;
        jostick ="";
      }
      if(jostick.indexOf("b")>=0){//Abajo
        velocity += 5;
        jostick="";
      }
      if(jostick.indexOf("c")>=0){//izquierda
        angle += 5;
        jostick="";
      }
      if(jostick.indexOf("d")>=0){//Derecha
        angle -= 5;
        jostick="";
      }
 }