// Kelsey & Raj
// SUSE 303 - Lab 3
// Monday, Feburary 26, 2023 & Monday, March 4, 2023

// Library imports:
# include <LiquidCrystal.h>
# include <LedControl.h>
# include <IRremote.h>

// Pin connections for LCD and LED Dot Matrix:
LiquidCrystal lcd(53, 51, 49, 47, 45, 43, 41);
LedControl lc(9, 10, 8, 1);

// Variable declartions:
bool JOYSTICK = true, REMOTE, TOGGLE = false; // Boolean operators for mode toggling
int X, Y = 3; // Coordinates of box position (starts at centre)
int current, previous = 0; // Required for joystick toggle check

// Remote codes [SUBJECT TO CHANGE]:
const unsigned long int UP = 4244832000; // Vol+ button
const unsigned long int DOWN = 1738080000; // Vol- button
const unsigned long int FORWARD = 1871773440; // Forward button
const unsigned long int BACKWARD = 534839040; // Reverse button
const unsigned long int POWER = 1570963200; // Power button

// Custom function to reposition box given input:
void position_box(int x, int y) {
  lc.clearDisplay(0);
  lc.setLed(0, x, y, true);
  lc.setLed(0, x, y+1, true);
  lc.setLed(0, x+1, y, true);
  lc.setLed(0, x+1, y+1, true);
}

void setup() {
  // put your setup code here, to run once:
  // Pin connections for joystick and IR remote receiver:
  pinMode(A2, INPUT); // VRx connection (horizontal)
  pinMode(A1, INPUT); // VRy connection (vertical)
  pinMode(52, INPUT_PULLUP); // SW connection (button)
  IrReceiver.begin(12);

  // LCD and serial monitor setup, splashscreen, and constant display:
  Serial.begin(9600);
  lcd.begin(16,2);
  lcd.print("Hello World!");
  delay(2000);
  lcd.clear();
  lcd.print("Mode: ");
  
  // LED Dot Matrix setup and initialization:
  lc.shutdown(0,false);
  lc.setIntensity(0,0);
  position_box(3, 3);
}

void loop() {
  // put your main code here, to run repeatedly:
  // Checks for input toggle from joystick button:
  //current = digitalRead(52);
  //if (current != previous) TOGGLE = true;
  //previous = current;

  //Serial.print(digitalRead(52));

  //attachInterrupt(digitalPinToInterrupt(52), Serial.println("Working"), CHANGE);
  //delay(1000);

  // Code to toggle input sources:
  if (TOGGLE == true) {
    JOYSTICK = !JOYSTICK;
    REMOTE = !REMOTE;
    TOGGLE = false;
  }
  // Resets display to reprint mode as nessecary:
  lcd.setCursor(6, 0);
  
  // Joystick controls:  
  if (JOYSTICK == true) {
    lcd.print("JOYSTICK");
    Y = map(analogRead(A2), 0, 1023, -1, 7);
    X = -map(analogRead(A1), 0, 1023, -7, 1);
    position_box(X, Y);
  } else lcd.print("REMOTE  "); 

  // Remote controls:
  if(IrReceiver.decode()) {
    long int Remote_Input = IrReceiver.decodedIRData.decodedRawData;
    //Serial.print("Code: ");
    //Serial.println(Remote_Input);
    switch (Remote_Input) {
      case UP:
        if (X > -1) X -= 1;
        break;
      case DOWN:
        if (X < 7) X += 1;
        break;
      case FORWARD:
        if (Y > -1) Y -= 1;
        break;
      case BACKWARD:
        if (Y < 7) Y += 1;
        break;
      case POWER:
        TOGGLE = true;
        break;
    }
    if (REMOTE == true) position_box(X, Y);
    IrReceiver.resume();
  }
}