import processing.serial.*;
private static final String PORT = "COM9";
//For serial communication and transformation between counter and cm.
Serial myPort;

int measure = 0;
int byte1, byte2, byte3, byte4, low, high;

float min = 512.0;
int max = 1023;

PImage fish;
PImage lolli;

float mouthX= 500;
float mouthY=350;

 float lolliXinit=10;
 float lolliYinit= 560;
 
 float fishXinit=690;
 float fishYinit=560;
 
 float lolliX=lolliXinit;
 float lolliY=lolliYinit;
 
 float fishX=fishXinit;
 float fishY=fishYinit;
boolean on = true;


public void setup(){
  //Setup serial communication
  String portName = Serial.list()[0];
  println("Port Name "+ portName); 
  myPort = new Serial(this, PORT, 9600);
  
  //setup window
  // Background is light gray
  background(200);
  // Window's drawing area is 800x600 pixels (XxY)
  //size(800, 600);
  size(1000,750);
  //images
   fish = loadImage("fish.png");
   lolli = loadImage("lollipop.png");
  
}

public void draw(){
   
  println("MeSURE is "+ measure);
   
  // Use thick black borders on shapes
  stroke(0);
  strokeWeight(5);
  
  // Use white fill
  fill(255);
   background(200);
   drawFace();
   drawMouth();
   drawThings();
}

/*
 * Draw a smiley face in the middle of the window
 */
void drawFace(){
  // Large circle centered at 500,300
  ellipse(500,300,400,400);
  // Two small black-filled ellipses
  fill(0);
  ellipse(425,225,25,60);
  ellipse(575,225,25,60); 
}

/*
* Draw a mouth as an arc, with variable height
*/
void drawMouth(){
   // Black-filled arc (part of an ellipse)
  float height = (measure/min)*100;
  println("measure/min is "+ measure/min);
  println("height is "+ height);
  arc(mouthX,mouthY,150,height,0,PI,CHORD);//arc (x,y,w,h,anglestart,anglestop, mode)
}

/*
 * Put the images in certain positions, which are variable
 */
void drawThings(){
 //initial:lower-left corner
 image(lolli, lolliX, lolliY, width/4, height/4);//image(img, x, y, width, height);
 //initiallower-right corner
 image(fish, fishX, fishY,  width/4, height/4);
}

/*
 *Called on moused pressed
 */
void mousePressed(){
  println("MOUSE PRESSED");
  if(on){
  myPort.write(0);
  on = false;
  println("MOUSE CLICKED to 0");
  } else{
    println("MOUSE CLICKED to 1");
    myPort.write(1);
    on = true;
  }
  myPort.write(10);
} 

 void serialEvent(Serial p){
   byte1 = byte2;
    byte2 = byte3;
    byte3 = byte4;
    byte4 = low;
    low = high;
    high = p.read();        

    if ((byte1 == 1) & (byte2 == 2) & (byte3 == 3) & (byte4 ==4)){
      //Reset the preamble.
      byte1=byte2=byte3=byte4=0;
      int counter = ((256*high)+low);
      updateValue(counter);
    }
 } 
    
 /*
  *Function called in serialEvent to update the images position
  */
 void updateValue(int value){
    
    measure = value;
    
     if(0 < measure&& measure<= 512){ //FISH CLOSE
       
       lolliX=lolliXinit;
       lolliY=lolliYinit;
       
       fishX=fishXinit+(((mouthX-fishXinit)/511)*(511-measure));
       fishY=fishYinit+(((mouthY-fishYinit)/511)*(511-measure));
       
       
     } else if(512 < measure&& measure<= 1023){ //LOLLIPOP CLOSE
 
       fishX=fishXinit;
       fishY=fishYinit;
       
       lolliX=lolliXinit-(((mouthX-lolliXinit)/511)*(511-measure));
       lolliY=lolliYinit-(((mouthY-lolliYinit)/511)*(511-measure));
       
       println("lolliX is "+ lolliX);
       println("lolliY is "+ lolliY);
     }
    
  }