2016 Halloween Laser Maze

/*2016 Halloween Laser Maze created by Sam Horne.
 * 
 * Note: This sketch is a work in progress and contains a few redundant variables and declarations.
 * While it worked correctly for the maze, I will definetely improve it in the future.
 */

//#include <RBL_nRF8001.h>
//#include <SPI.h>
//#include <boards.h>
#include <IOSControllerBLE.h>  //Initialize Arduino Manager library.
#include <Wire.h>  //Initialize Wire library to connect both Arduinos.

#define LASERPIN      6     //Lasers connected with transistor to Digital pin6.
#define SENSOR0           0     //Four sensor groups, each containing photoresistors wired in series
#define SENSOR1           2
#define SENSOR2           1
#define SENSOR3           3

boolean laservalue;    //State of laser
int buttonPin = 2;     //Stop button
int buttonState = 0;
//Sensor variables.
int S0;
int S1;
int S2;
int S3;
//Threshold variables
int T0;
int T1;
int T2;
int T3;
int sound; //Variable controls audio widget in Arduino Manager
int aim;  //Allows lights and alarm to be disabled from Arduino Manager
int laserState;
int LASER = 0;
byte x = 0;  //For wire library transmission

IOSControllerBLE iosController(&doWork,&doSync,&processIncomingMessages,&processOutgoingMessages,&processAlarms,&deviceConnected,&deviceDisconnected);  //Necessary for Arduino Manager

void setup()
{  
  ble_begin();
  Wire.begin();
  Serial.begin(115200);

//  pinMode(CONNECTIONPIN,OUTPUT);
  pinMode(buttonPin , INPUT);  //Stop button
  pinMode(LASERPIN,OUTPUT);  //Laser
  pinMode(SENSOR0, INPUT);
  pinMode(SENSOR1,INPUT);
  pinMode(SENSOR2, INPUT);
  pinMode(SENSOR3, INPUT);

  laservalue = 0;  /Set the laser value.
  digitalWrite(LASERPIN,laservalue);  //Set the laser value.
}

void loop() {  
  iosController.loop();
  buttonState = digitalRead(buttonPin);
  if(buttonState == HIGH) {         //User presses stop button to win game.
    Wire.beginTransmission(9); //Begin transmitting on channel 9.
  Wire.write(9);  //Send a single byte (9) which triggers the win sequence on the Pro Mini.
  Wire.endTransmission();
    LASER = LOW;   //Laser turns off if someone wins.
    aim = HIGH;  //This prevents the alarm from sounding when the sensor values drop due to the inactive laser.
    iosController.writeMessage("aim", HIGH);  //Sync switch positions.
    digitalWrite(LASERPIN,LOW);  //Laser turns off if someone wins.
    iosController.writeMessage("laserState", LOW); //Sync switch positions.
    delay(1000);
  }
  if (S0 < T0 && aim == 0)  {  //When sensor value drops below threshold and aim mode is not enabled.
    sound = 1;  //Sound the alarm
    x = 0; 
    Wire.beginTransmission(9);
  Wire.write(0);  //Send value 0 to Pro Mini to trigger flashing red lights.
  Wire.endTransmission();
    digitalWrite(LASERPIN,LOW); //Turn the laser off.
  }
  else if (S1 < T1 && aim == 0) {  //When sensor value drops below threshold and aim mode is not enabled.
    sound = 1;  //Sound the alarm
    x = 0;
    Wire.beginTransmission(9);
  Wire.write(0);  //Send value 0 to Pro Mini to trigger flashing red lights.
  Wire.endTransmission();
    digitalWrite(LASERPIN,LOW); //Turn the laser off.
  }
  else if (S2 < T2 && aim == 0) {  //When sensor value drops below threshold and aim mode is not enabled.
    sound = 1;  //Sound the alarm
    x = 0;
    Wire.beginTransmission(9);
  Wire.write(0);  //Send value 0 to Pro Mini to trigger flashing red lights.
  Wire.endTransmission();
    digitalWrite(LASERPIN,LOW); //Turn the laser off.
  }
  else if (S3 < T3 && aim == 0) {  //When sensor value drops below threshold and aim mode is not enabled.
    sound = 1;  //Sound the alarm
    x = 0;
    Wire.beginTransmission(9);
  Wire.write(0);  //Send value 0 to Pro Mini to trigger flashing red lights.
  Wire.endTransmission();
    digitalWrite(LASERPIN,LOW); //Turn the laser off.
  }
  else {
    sound = 0; //If no sensor events occur, no sound will happen.
  }

}

void doWork() {
//Read the sensor group values from the analog pins.
  delay(5);
  S1 = analogRead(SENSOR1);
  delay(5);
  S2 = analogRead(SENSOR2);
  delay(5);
  S3 = analogRead(SENSOR3);
  delay(5);
  S0 = analogRead(SENSOR0);
  iosController.writeMessage("S0",S0); 
  
}

void doSync (char *variable) {
}

void processIncomingMessages(char *variable, char *value) {

  if (strcmp(variable,"LASER")==0) { //Process incoming messages from Arduino Manager

    laservalue = atoi(value);
    laserState = atoi(value);

    digitalWrite(LASERPIN,laservalue);  //If LASER switch goes HIGH, turn on laser
  }

  if (strcmp(variable,"T0")==0) {

    T0 = atoi(value);   
  }
  if (strcmp(variable,"T1")==0) {

    T1 = atoi(value);   
  }
  if (strcmp(variable,"T2")==0) {

    T2 = atoi(value);   
  }
  if (strcmp(variable,"T3")==0) {

    T3 = atoi(value);   
  }
  if (strcmp(variable,"aim")==0) {  //Sync aim value.
    aim = atoi(value);
  }  

}

void processOutgoingMessages() {

//Sync sensor values to Arduino Manager.
  iosController.writeMessage("S0",S0); 
  iosController.writeMessage("S1",S1);
  iosController.writeMessage("S2",S2);
  iosController.writeMessage("S3",S3);
  iosController.writeMessage("sound", sound);
  iosController.writeMessage("x",x); 
}
void deviceConnected () {
}

void deviceDisconnected () {
}

#ifdef ALARMS_SUPPORT

void processAlarms(char *alarm) {

  iosController.log("Alarm fired: ");
  iosController.logLn(alarm);

}
#endif

float getVoltage(int pin) {

  return (analogRead(pin) * .004882813);  // converting from a 0 to 1023 digital range
  // to 0 to 5 volts (each 1 reading equals ~ 5 millivolts
}