#include <IRremote.h>

// Define the pins for the DC motors
#define MOTOR_A_FORWARD 3
#define MOTOR_A_BACKWARD 4
#define MOTOR_B_FORWARD 5
#define MOTOR_B_BACKWARD 6

// Create an instance of the IR receiver
IRrecv irrecv(7); // Pin where the IR receiver is connected
decode_results results;

// Setup function to initialize the motors and IR receiver
void setup() {
  // Initialize motor pins as outputs
  pinMode(MOTOR_A_FORWARD, OUTPUT);
  pinMode(MOTOR_A_BACKWARD, OUTPUT);
  pinMode(MOTOR_B_FORWARD, OUTPUT);
  pinMode(MOTOR_B_BACKWARD, OUTPUT);
  
  // Start the IR receiver
  irrecv.enableIRIn();
}

// Loop function to continuously check for IR signals
void loop() {
  if (irrecv.decode(&results)) {
    // Check the received IR code and control motors accordingly
    switch (results.value) {
      case 0xFF6897: // Example code for "Forward"
        moveForward();
        break;
      case 0xFF30CF: // Example code for "Backward"
        moveBackward();
        break;
      case 0xFF18E7: // Example code for "Left"
        turnLeft();
        break;
      case 0xFF7A85: // Example code for "Right"
        turnRight();
        break;
      case 0xFF10EF: // Example code for "Stop"
        stopMotors();
        break;
      default:
        break;
    }
    irrecv.resume(); // Receive the next value
  }
}

// Function to move the car forward
void moveForward() {
  digitalWrite(MOTOR_A_FORWARD, HIGH);
  digitalWrite(MOTOR_A_BACKWARD, LOW);
  digitalWrite(MOTOR_B_FORWARD, HIGH);
  digitalWrite(MOTOR_B_BACKWARD, LOW);
}

// Function to move the car backward
void moveBackward() {
  digitalWrite(MOTOR_A_FORWARD, LOW);
  digitalWrite(MOTOR_A_BACKWARD, HIGH);
  digitalWrite(MOTOR_B_FORWARD, LOW);
  digitalWrite(MOTOR_B_BACKWARD, HIGH);
}

// Function to turn the car left
void turnLeft() {
  digitalWrite(MOTOR_A_FORWARD, LOW);
  digitalWrite(MOTOR_A_BACKWARD, HIGH);
  digitalWrite(MOTOR_B_FORWARD, HIGH);
  digitalWrite(MOTOR_B_BACKWARD, LOW);
}

// Function to turn the car right
void turnRight() {
  digitalWrite(MOTOR_A_FORWARD, HIGH);
  digitalWrite(MOTOR_A_BACKWARD, LOW);
  digitalWrite(MOTOR_B_FORWARD, LOW);
  digitalWrite(MOTOR_B_BACKWARD, HIGH);
}

// Function to stop the motors
void stopMotors() {
  digitalWrite(MOTOR_A_FORWARD, LOW);
  digitalWrite(MOTOR_A_BACKWARD, LOW);
  digitalWrite(MOTOR_B_FORWARD, LOW);
  digitalWrite(MOTOR_B_BACKWARD, LOW);
}