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

//Val = map(analog_val, 0, 1023, -10, 10);
int joy_x;
int x = 4; //assigned to 3 to set up square 
int y = 4;
int joy_y;
int DIN = 8;
int CS = 9;
int CLK = 10;
int SEL = 2; //button of joystick

//IR receiver 
const int RECV_PIN=17; //signal pin on pin 17
unsigned long up = 4244832000;
unsigned long down = 1738080000;
unsigned long left = 534839040;
unsigned long right = 1871773440;
unsigned long power = 1570963200; 


LedControl lc = LedControl(DIN, CLK, CS, 0);

//LCD setup -- pins
const int rs=12, en=11, d4=5, d5=4, d6=6, d7=7; 
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

//mode (joystick or RS)
int mode=0;
//mode 1 = joystick
//mode 2 = IR remote


void setup() {
  lc.shutdown(0,false);
  lc.setIntensity(0,0);
  lc.clearDisplay(0);
  Serial.begin(9600);
  pinMode(SEL, INPUT);

  IrReceiver.begin(RECV_PIN); 

  lcd.begin(16,2);


}

void loop() {
  

  lcd.clear();
  lcd.setCursor(0,0);
  
  Serial.println(mode);
  lcd.print("Mode: ");

  if (mode==1){
    lcd.print("JOYSTICK");
  }
  else if (mode==2){
    lcd.print("REMOTE");
  }
  else{
    lcd.print(" ");
  }
  

  //check mode
  if (digitalRead(2)==HIGH){
    mode = 1; //joystick
  }
  else if (IrReceiver.decodedIRData.decodedRawData == power){
    mode = 2; //IR remote
  }



  lc.setLed(0,y,x,true);
  lc.setLed(0, y-1, x-1, true);
  lc.setLed(0, y, x-1, true);
  lc.setLed(0, y-1, x, true);


  if (mode==1){
    joy_x = analogRead(A0);
    joy_y = analogRead(A1);
    x = map(joy_x, 0, 1023, 0, 8);
    y = map(joy_y, 0, 1023, 8, 0);
    lc.clearDisplay(0);
    disp_dots;
  }

//IR reciever -- reading inputs (Original code)
    if (IrReceiver.decode()){  //0 if no data ready, 1 if data ready
      //Serial.print("Code: ");
      //Serial.println(IrReceiver.decodedIRData.decodedRawData);
      //returns raw decoded value, 32 bits
      IrReceiver.resume(); //ready to recieve next value
    } 


  if (mode==2){  
    //remote
    if(IrReceiver.decodedIRData.decodedRawData == up){
      //clear the original square then decrement the y
      //and regenerate square (similar for other directions)
      lc.clearDisplay(0); 
      //bounding square from the top
      if(y>0){ 
        y--;
        disp_dots(x,y);
      }
    }

    if(IrReceiver.decodedIRData.decodedRawData == down){ 
      lc.clearDisplay(0); 
      //bounding square from bottom
      if(y<8){
        y++;
        disp_dots(x,y);
      }
    }
    
    if(IrReceiver.decodedIRData.decodedRawData == left){
      lc.clearDisplay(0); 
      //bounding square from the left
      if(x<8){
        x++;
        //disp_dots(x,y);
      }
    }

    if(IrReceiver.decodedIRData.decodedRawData == right){
      lc.clearDisplay(0); 
      //bounding square from the right
      if(x>0){
        x--;
        //disp_dots(x,y);
      }
    }
  }
    //default original square 
    disp_dots(x,y);

    delay(200);

}


//Define a function to display the dots on the screen
void disp_dots(int x, int y){
  lc.setLed(0,y,x,true);
  lc.setLed(0, y-1, x-1, true);
  lc.setLed(0, y, x-1, true);
  lc.setLed(0, y-1, x, true);
}