/**
 * Simple Write. 
 * 
 * Check if the mouse is over a rectangle and writes the status to the serial port. 
 * This example works with the Wiring / Arduino program that follows below.
 */


import processing.serial.*;

Serial myPort;  // Create object from Serial class
int val, lastval;        // Data received from the serial port

static int RED = 3;
static int YELLOW = 2;
static int GREEN = 1;

static byte[] codes = { 
  0x00, 0x01, 0x02, 0x04
};
static byte[] blinkcodes = { 
  0x00, 0x08, 0x10, 0x20
};

static color[] colors = { 
  #000000, #00FF00, #FFFF00, #FF0000
};

int state = 0;
int addr = 0;

void setup() 
{
  size(200, 500);
  // I know that the first port in the serial list on my mac
  // is always my  FTDI adaptor, so I open Serial.list()[0].
  // On Windows machines, this generally opens COM1.
  // Open whatever port is the one you're using.
  String portName = Serial.list()[0];
  println(portName);
  myPort = new Serial(this, portName, 9600);
  lastval=0;
  state=0;
}

void draw() {
  background(0);
  val = mouseOverRect();
  if (val!=lastval) {
    //    myPort.write(codes[val]);
    //    state=state+codes[val];
    //    println(binary(state, 8));
    myPort.write(state|codes[val]);
    lastval=val;
  }

  drawBoxes();
}

void drawBoxes() {
  //  noFill();
  if (0x04==(state&0x04)) fill(colors[RED]);
  else noFill();
  stroke(colors[RED]);
  rect(50, 25, 100, 100);         // Draw a square
  if (0x02==(state&0x02)) fill(colors[YELLOW]);
  else noFill();
  stroke(colors[YELLOW]);
  rect(50, 150, 100, 100);         // Draw a square
  if (0x01==(state&0x01)) fill(colors[GREEN]);
  else noFill();
  stroke(colors[GREEN]);
  rect(50, 275, 100, 100);         // Draw a square
}

int mouseOverRect() { // Test if mouse is over square

  if ((mouseX >= 50) && (mouseX <= 150) && (mouseY >= 25) && (mouseY <= 125)) return RED; // Red
  if ((mouseX >= 50) && (mouseX <= 150) && (mouseY >= 150) && (mouseY <= 250)) return YELLOW; // Yellow
  if ((mouseX >= 50) && (mouseX <= 150) && (mouseY >= 275) && (mouseY <= 375)) return GREEN; // Green
  return 0;
}

void mousePressed() {
  // set state to whichever area was currently clicked
  val=mouseOverRect();
  if (val==0) {
    state=state&0xC0;
  } 
  else {
    if ((state&codes[val])>0) {
      state^=(blinkcodes[val]+codes[val]);
    } 
    else {
      state^=codes[val]; // lock light on if not already on.
    }

  }
  println(binary(state, 8)+" ("+int(state)+")");

  myPort.write(state);
  lastval=val;
}

void keyPressed() {
  switch(key) {
    case '0': 
      addr=0;
      break;
    case '1': 
      addr=1;
      break;
    case '2': 
      addr=2;
      break;
    case '3': 
      addr=3;
      break;
    default:
      break;
  };  
  println("addr: "+addr);
  state=(addr<<6)+(state & 0x3F);
  println("state: "+binary(state, 8));
}