#include <LiquidCrystal.h>
#include <IRremote.hpp>
#include <LedControl.h>

const int rs = 7, en = 8, d4 = 4, d5 = 5, d6 = 6, d7 = 3;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

#define joyX A4
#define joyY A5
#define buttonPin 2 //to switch modes

int xMap, yMap, xValue, yValue;
LedControl lc = LedControl(13, 11, 12, 1); //13=DIN, 12=CS, 11=CLK

#define IR_receiver_pin 1

bool JoystickMode = true; //indicates current mode

//int dotX = 3;
//int dotY = 4;

void setup() {
  Serial.begin(115200);
  IrReceiver.begin(IR_receiver_pin, DISABLE_LED_FEEDBACK); // Enable receiving IR signals
  pinMode(buttonPin, INPUT_PULLUP); //button is set to input with internal pull-up resistor


  lc.shutdown(0, false);
  lc.setIntensity(0,0); //sets brightness to medium values
  lc.clearDisplay(0);
}

void loop() {
  if (digitalRead(buttonPin) == LOW ) {
    JoystickMode = !JoystickMode; //goes into toggle mode when pressed 
    delay(200);
    lcd.clear();
    if (JoystickMode) {
      lcd.print("Mode: JOYSTICK");
    } else {
      lcd.print("Mode: IR REMOTE");
    }
    delay(200);
  }
  if (!JoystickMode){
    if (IrReceiver.decode()) { // Returns true if data ready.
      if (IrReceiver.decodedIRData.decodedRawData == 1570963200 ) {
        JoystickMode = !JoystickMode; // Toggle mode when power button is pressed on the IR remote
        delay(200);
        lcd.clear();
        if (JoystickMode) {
          lcd.print("Mode: JOYSTICK");
        } else {
          lcd.print("Mode: IR REMOTE");
        }
        delay(200);
    } }
    
  }


  if (JoystickMode) {   //joystick mode
    xValue = analogRead(joyX);
    Serial.println("xVal =");
    Serial.println(xValue, DEC);
    yValue = analogRead(joyY);
    Serial.println("yVal =");
    Serial.println(yValue, DEC);
    delay(100);
    xMap = map(xValue, 0, 1023, 7, 0);
    yMap = map(yValue, 0, 1023, 0, 7);
    
    lc.setLed(0, xMap, yMap, true);
    lc.setLed(0, xMap-1, yMap, true);
    lc.setLed(0, xMap, yMap+1, true);
    lc.setLed(0, xMap-1, yMap+1, true);
    delay(1000);
    
    lc.clearDisplay(0);

  }
  else
   {  //IR REMOTE mode
    if (IrReceiver.decode()) { // Returns true if data ready.
      Serial.print("Code: ");
      Serial.println(IrReceiver.decodedIRData.decodedRawData);
      //xMap = map(xValue, 0, 1023, 7, 0);
      //yMap = map(yValue, 0, 1023, 0, 7);
      switch(IrReceiver.decodedIRData.decodedRawData) {
        case 4244832000: //move up 
          xMap = max(0, xMap-2);
          break;
        case 1738080000: //move down
          xMap = min(8, xMap+2);
          break;
        case 1871773440: //move right
          yMap = max(-1, yMap-2);  //changed the range so that it does not fall of the screen
          break;
        case 534839040: //move left
          yMap = min(7, yMap+2);
          break;
       xMap = map(xValue, 0, 1023, 7, 0);
       yMap = map(yValue, 0, 1023, 0, 7);
      }
    

      lc.clearDisplay(0);
      lc.setLed(0, xMap, yMap, true);
      lc.setLed(0, xMap-1, yMap, true);
      lc.setLed(0, xMap, yMap+1, true);
      lc.setLed(0, xMap-1, yMap+1, true);
      delay(1000);

      //lc.clearDisplay(0);
      IrReceiver.resume(); // ready to receive next value
      //lc.clearDisplay(0);
    }
  } 
}