Arduino Gun Receiver Sketch

#include <VirtualWire.h> //the same library as before

byte message[VW_MAX_MESSAGE_LEN]; //a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; //the size of the message

void setup()
{
  Serial.begin(9600); //this time, this is important. unity reads from the serial port data
  vw_set_rx_pin(7);   //the data pin the receiver is connected to

  Serial.println("Device is ready");
  vw_setup(2000); //bits per sec

  vw_rx_start(); //start the receiver
}

void loop()
{
  if (vw_get_message(message, &messageLength)) //whenever we get a message or messages
  {
    for (int i = 0; i < messageLength; i++) //for each message
    {
      Serial.write(message[i]); //write it to the serial port
    }
    Serial.println(); //and start a new line, ready for the next message
  }
}