//Example sketch on how to use array's for JColvin91's
//Instructable on "Creating and Using Multidimensional Arrays in C++"

//global variables
//record button, recording state, and record LED
int recordB = 5;
boolean recordState = false;
int recordBL = 31;
//button to turn on the middle LED, middle LED
int ledB = 7;
int midLED = 33;
//play button, playing state, and play LED
int playB = 9;
boolean playState = false;
int playBL = 35;
//arrays of 50 elements to store the recording and the on/off state
int recording [2][50];
//end of globals

void setup(){
  //setting the pins to inputs or outputs
  pinMode(recordB, INPUT);
  pinMode(recordBL, OUTPUT);
  digitalWrite(recordBL, LOW);
  pinMode(playB, INPUT);
  pinMode(playBL, OUTPUT);
  digitalWrite(playBL, LOW);
  pinMode(ledB, INPUT);
  pinMode(midLED, OUTPUT);
  digitalWrite(midLED, LOW);
}//end of setup()

void loop(){
  while(digitalRead(ledB)==LOW && digitalRead(recordB)==LOW && digitalRead(playB)==LOW){
    //do nothing
    } 
  
  //if the record button is pressed
  if(digitalRead(recordB)==HIGH){
    while(digitalRead(recordB)==HIGH){}
    recordState=true;
    record(); //go to the record function
    }
    
  //if the play button is pressed  
  if(digitalRead(playB)==HIGH){
    while(digitalRead(playB)==HIGH){}
    playState=true;
    play(); //go to the play function
    }
    
  //if the middle button is pressed
  if(digitalRead(ledB)==HIGH){
    digitalWrite(midLED, HIGH);
    while(digitalRead(ledB)==HIGH){
      //wait and keep the LED on
      }
    digitalWrite(midLED, LOW);
    }//end of if middle button is pressed 
}//end of loop()



void record(){
  digitalWrite(recordBL, HIGH);
  //setting up some variables that we will need
  int j=0;
  int startTime;
  
  //setting all of the array element values to 0, 
  //in case we are starting a new recording
  for(int arrayLayer = 0; arrayLayer<2; arrayLayer++){
    for(int arrayValue=0; arrayValue<50; arrayValue++){
        recording[arrayLayer][arrayValue] = 0;
        }//end of erasing the previous recording
      }
  
  while(recordState==true){//while we are recording
  
    startTime = millis();//getting the current time
    while(digitalRead(ledB)==LOW && digitalRead(recordB)==LOW){
      //wait while no buttons are pressed
      }
    if((millis()-startTime)>1){//if the time that no button was pressed was longer than 1 millisecond, to make sure that we don't record weird stuff
      recording[0][j] = 0; //no button was pressed
      recording[1][j] = millis()-startTime; //time it was not pressed for
      j++;//increment to the next spot in the array
      }

    //if the middle button is pressed...
    if(digitalRead(ledB)==HIGH){
      digitalWrite(midLED, HIGH);//turn on the middle LED
      startTime = millis();//getting the current time
      while(digitalRead(ledB)==HIGH){
        //wait while the button is pressed
        }
      if((millis()-startTime)>1){  
        recording[0][j] = 1; //button was pressed
        recording[1][j] = millis()-startTime; //time it was not pressed for
        j++;//increment to the next spot in the array
        }//end checking to see if the button was pressed long enough
      digitalWrite(midLED, LOW);
      }//end of if the middle button was pressed  
      
    //if the recording button is pressed to stop recording...
    if(digitalRead(recordB)==HIGH){
      while(digitalRead(recordB)==HIGH){}
      delay(5);
      recordState=false;
      }//end of if recording button was pressed
      
    }//end of while recordState is true
    digitalWrite(recordBL, LOW);
}//end of record()

void play(){
  digitalWrite(playBL, HIGH);
  int startTime;
  int j = 0;
  while(playState == true){
    for(j=0; j<50; j++){ //looping through the array
      
      //checking to see if the recording has ended since it only records if the action lasted longer than 1ms
      if(recording[1][j] == 0){
        j=50;
        delay(10);
        }//if we encounter unused array space, the recording must have ended so we jump to the end of the array
      
      //if the button was not pressed...
      if(recording[0][j] == 0){
        startTime = millis();
        while((millis()-startTime)<recording[1][j]){
          delay(1);//waiting for the time to equal the time recorded
          //checking to see if the play button gets pressed
          if(playState == true){
            if(digitalRead(playB)==HIGH){
              while(digitalRead(playB)==HIGH){}
              playState=false;
              startTime=0;//setting startTime to zero to break out of the play function sooner
              }//end of reading the button
            }//end of checking to see if we should check the button
          }//end of delaying
        }//end of if the middle button was not pressed
      
      //if the button was pressed...
      if(recording[0][j] == 1){
        startTime = millis();
        digitalWrite(midLED, HIGH);
          while((millis()-startTime)<recording[1][j]){
          delay(1);
          //waiting for the time to equal the time recorded
          //checking to see if the play button gets pressed
          if(playState == true){
            if(digitalRead(playB)==HIGH){
              while(digitalRead(playB)==HIGH){}
              playState=false;
              startTime=0;//setting startTime to zero to break out of the play function sooner
              }//end of reading the button
            }//end of checking to see if we should check the button
          }//end of delaying
        digitalWrite(midLED, LOW);
        }//end of if the middle button was pressed
    
      if(playState == false){
        j=50;
        }
        
    }//end of looping through the array
    if(playState == true){
      j=0;
      delay(10);
      }//reseting array incrementers and looping again
    
  }//end of while playState is true
  digitalWrite(playBL, LOW);
  delay(5);
}//end of play function