/*  Arduino TFT Tutorial
 *  Program made by Dejan Nedelkovski,
 *  www.HowToMechatronics.com 
 */
 
/*  This program uses the UTFT and UTouch libraries
 *  made by Henning Karlsen. 
 *  You can find and download them at:
 *  www.RinkyDinkElectronics.com
 */

#include <UTFT.h> 
#include <UTouch.h>

//==== Creating Objects
UTFT    myGLCD(SSD1289,38,39,40,41); //Parameters should be adjusted to your Display/Schield model
UTouch  myTouch( 6, 5, 4, 3, 2);

//==== Defining Variables
extern uint8_t SmallFont[];
extern uint8_t BigFont[];
extern uint8_t SevenSegNumFont[];

int x, y;

char currentPage, selectedUnit;

//Ultrasonic Sensor
const int VCC = 13;
const int trigPin = 11;
const int echoPin = 12;

long duration;
int distanceInch, distanceCm;

// RGB LEDs
const int redLed = 10;
const int greenLed = 9;
const int blueLed = 8;
int xR=38;
int xG=38;
int xB=38;

//// Floppy Bird
//int xP = 319;
//int yP = 100;
//int yB = 30;
//int fallRateInt = 0;
//float fallRate =0;
//int score=0;
const int button = 14;
//int buttonState = 0;

void setup() {
// Initial setup
  myGLCD.InitLCD();
  myGLCD.clrScr();
  myTouch.InitTouch();
  myTouch.setPrecision(PREC_MEDIUM);

  // Defining Pin Modes
  pinMode(VCC, OUTPUT); // VCC
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
  pinMode(redLed, OUTPUT);
  pinMode(greenLed, OUTPUT);
  pinMode(blueLed, OUTPUT);
  pinMode(button, INPUT);
  digitalWrite(VCC, HIGH); // +5V - Pin 13 as VCC

  drawHomeScreen();  // Draws the Home Screen
  currentPage = '0'; // Indicates that we are at Home Screen
  selectedUnit = '0'; // Indicates the selected unit for the first example, cms or inches
}

void loop() { 
  // Home Screen
//  if (currentPage == '0') {
//    if (myTouch.dataAvailable()) {
//      myTouch.read();
//      x=myTouch.getX(); // X coordinate where the screen has been pressed
//      y=myTouch.getY(); // Y coordinates where the screen has been pressed
//
//      // If we press the RGB LED Control Button 
//      if ((x>=35) && (x<=285) && (y>=140) && (y<=180)) {
//        drawFrame(35, 140, 285, 180);
//        currentPage = '2';
//        myGLCD.clrScr();
//        drawLedControl();
//      }  
//    }
//  }

  
//  // RGB LED Control 
//  if (currentPage == '2') {
//    setLedColor();
//    if (myTouch.dataAvailable()) {
//        myTouch.read();
//        x=myTouch.getX();
//        y=myTouch.getY();
//        
//        //Back button
//        if ((x>=10) && (x<=60) &&(y>=10) && (y<=36)) {
//          drawFrame(10, 10, 60, 36);
//          currentPage = '0';
//          myGLCD.clrScr();
//          drawHomeScreen();
//          // Turns the LED off
//          analogWrite(redLed, 0);
//          analogWrite(greenLed, 0);
//          analogWrite(blueLed, 0);
//        }
//    }
//  }

}

// ====== Custom Funtions ======
// drawHomeScreen - Custom Function
void drawHomeScreen() {
  // Title
  myGLCD.setBackColor(0,0,0); // Sets the background color of the area where the text will be printed to black
  myGLCD.setColor(255, 255, 255); // Sets color to white
  myGLCD.setFont(BigFont); // Sets font to big
  myGLCD.print("Arduino TFT Tutorial", CENTER, 10); // Prints the string on the screen
  myGLCD.setColor(255, 0, 0); // Sets color to red
  myGLCD.drawLine(0,32,319,32); // Draws the red line
  myGLCD.setColor(255, 255, 255); // Sets color to white
  myGLCD.setFont(SmallFont); // Sets the font to small
  myGLCD.print("by HowToMechatronics.com", CENTER, 41); // Prints the string
  myGLCD.setFont(BigFont);
  myGLCD.print("Select Example", CENTER, 64);
  
  // Button - Distance Sensor
  myGLCD.setColor(16, 167, 103); // Sets green color
  myGLCD.fillRoundRect (35, 90, 285, 130); // Draws filled rounded rectangle
  myGLCD.setColor(255, 255, 255); // Sets color to white
  myGLCD.drawRoundRect (35, 90, 285, 130); // Draws rounded rectangle without a fill, so the overall appearance of the button looks like it has a frame
  myGLCD.setFont(BigFont); // Sets the font to big
  myGLCD.setBackColor(16, 167, 103); // Sets the background color of the area where the text will be printed to green, same as the button
  myGLCD.print("DISTANCE SENSOR", CENTER, 102); // Prints the string
  
  // Button - RGB LED Control
  myGLCD.setColor(16, 167, 103);
  myGLCD.fillRoundRect (35, 140, 285, 180);
  myGLCD.setColor(255, 255, 255);
  myGLCD.drawRoundRect (35, 140, 285, 180);
  myGLCD.setFont(BigFont);
  myGLCD.setBackColor(16, 167, 103);
  myGLCD.print("RGB LED CONTROL", CENTER, 152);

  // Button - Birduino
  myGLCD.setColor(16, 167, 103);
  myGLCD.fillRoundRect (35, 190, 285, 230);
  myGLCD.setColor(255, 255, 255);
  myGLCD.drawRoundRect (35, 190, 285, 230);
  myGLCD.setFont(BigFont);
  myGLCD.setBackColor(16, 167, 103);
  myGLCD.print("BIRDUINO GAME", CENTER, 202);
}

// Highlights the button when pressed
void drawFrame(int x1, int y1, int x2, int y2) {
  myGLCD.setColor(255, 0, 0);
  myGLCD.drawRoundRect (x1, y1, x2, y2);
  while (myTouch.dataAvailable())
    myTouch.read();
    myGLCD.setColor(255, 255, 255);
    myGLCD.drawRoundRect (x1, y1, x2, y2);
}

//====================================================
void drawLedControl() {
//  myGLCD.setColor(100, 155, 203);
//  myGLCD.fillRoundRect (10, 10, 60, 36);
//  myGLCD.setColor(255, 255, 255);
//  myGLCD.drawRoundRect (10, 10, 60, 36);
//  myGLCD.setFont(BigFont);
//  myGLCD.setBackColor(100, 155, 203);
//  myGLCD.print("<-", 18, 15);
//  myGLCD.setBackColor(0, 0, 0);
//  myGLCD.setFont(SmallFont);
//  myGLCD.print("Back to Main Menu", 70, 18);
//  myGLCD.setFont(BigFont);
//  myGLCD.print("RGB LED Control", CENTER, 50);
//  myGLCD.print("LED Color:", 10, 95);
//  myGLCD.print("R", 10, 135);
//  myGLCD.print("G", 10, 175);
//  myGLCD.print("B", 10, 215);
//  myGLCD.setColor(255, 0, 0);
//  myGLCD.drawLine(0,75,319,75); 
//  myGLCD.setColor(255, 255, 255);
//  myGLCD.drawRect(30, 138, 310, 148); // R - Slider
//  myGLCD.drawRect(30, 178, 310, 188);
//  myGLCD.drawRect(30, 218, 310, 228);  
}
//====================================================
//============= setLedColor() - Custom Funtion
void setLedColor() {
//  if (myTouch.dataAvailable()) {
//    myTouch.read();
//    x=myTouch.getX();
//    y=myTouch.getY();        
//    // Area of the Red color slider
//    if( (y>=130) && (y<=156)) {
//      xR=x; // Stores the X value where the screen has been pressed in to variable xR
//      if (xR<=38) { // Confines the area of the slider to be above 38 pixels
//        xR=38;
//      }
//      if (xR>=303){ /// Confines the area of the slider to be under 310 pixels
//        xR=303;
//      }
//    }
//    // Area of the Green color slider
//    if( (y>=170) && (y<=196)) {
//      xG=x;
//      if (xG<=38) {
//        xG=38;
//      }
//      if (xG>=303){
//        xG=303;
//      }
//    }
//    // Area of the Blue color slider
//    if( (y>=210) && (y<=236)) {
//      xB=x;
//      if (xB<=38) {
//        xB=38;
//      }
//      if (xB>=303){
//        xB=303;
//      }
//    }    
//  }
//  // Maps the values of the X - Axis from 38 to 0 and 310 to 255, because we need values from 0 to 255 for turning on the led
//  int xRC = map(xR,38,310,0,255);
//  int xGC = map(xG,38,310,0,255);
//  int xBC = map(xB,38,310,0,255);
//  
//  // Sends PWM signal to the pins of the led
//  analogWrite(redLed, xRC);
//  analogWrite(greenLed, xGC);
//  analogWrite(blueLed, xBC);
//  
//  // Draws a rectangle with the latest color combination 
//  myGLCD.setColor(xRC, xGC, xBC);
//  myGLCD.fillRoundRect(175, 87, 310, 119);
//  
//  // Draws the positioners
//  myGLCD.setColor(255, 255, 255);
//  myGLCD.fillRect(xR,139,(xR+4),147); // Positioner
//  myGLCD.setColor(xRC, 0, 0);
//  myGLCD.fillRect(31, 139, (xR-1), 147);
//  myGLCD.setColor(0, 0, 0);
//  myGLCD.fillRect((xR+5), 139, 309, 147);
//  
//  myGLCD.setColor(255, 255, 255);
//  myGLCD.fillRect(xG,179,(xG+4),187);
//  myGLCD.setColor(0, xGC, 0);
//  myGLCD.fillRect(31, 179, (xG-1), 187);
//  myGLCD.setColor(0, 0, 0);
//  myGLCD.fillRect((xG+5), 179, 309, 187);
//  
//
//  myGLCD.setColor(255, 255, 255);
//  myGLCD.fillRect(xB,219,(xB+4),227);
//  myGLCD.setColor(0, 0, xBC);
//  myGLCD.fillRect(31, 219, (xB-1), 227);
//  myGLCD.setColor(0, 0, 0);
//  myGLCD.fillRect((xB+5), 219, 309, 227);
}