///               mrfrozenpeak              ////


int freq[3][10] = { {150,200,300,400,600,800,1000,1200,1500,2000},                        // defining the frequencies for different modes of piano
             {50,70,90,120,150,180,210,250,290,350}
             ,{500,800,1200,1500,2000,2500,3000,3500,4000,4500}
};
int mode = 0;                   

void setup() {
  pinMode(2,OUTPUT);                          // setup pin for speaker output
  pinMode(13,INPUT);                          
  pinMode(12,INPUT);
  pinMode(11,INPUT);
  pinMode(10,INPUT);                         // setup pin for ir sensor input
  pinMode(9,INPUT);
  pinMode(8,INPUT);
  pinMode(7,INPUT);
  pinMode(6,INPUT);
  pinMode(5,INPUT);
  pinMode(4,INPUT);
  pinMode(0,INPUT);                            // analog pin for touch sensor swicth
 // put your setup code here, to run once:
// 200>
}

void loop() {
int a1 = digitalRead(13);  
int a2 = digitalRead(12);
int a3 = digitalRead(11);
int a4 = digitalRead(10);
int a5 = digitalRead(9);                                    // taking all sensor inputs
int a6 = digitalRead(8);
int a7 = digitalRead(7);
int a8 = digitalRead(6);
int a9 = digitalRead(5);
int a10 = digitalRead(4);
int mode_update = analogRead(A0);                            // analog input for touch switch

if(mode_update >500){
  noTone(2);
  tone(2,500,300);                                          // if touch switch is pressed, update value of mode and if mode is last mode convert it to frist mode
  if(mode<2){
  mode++;}
  else{
    mode = 0;}
    delay(2000);
  }


  if(a1==0){
    tone(2,freq[mode][0],10);                                     // simple conditional statements
    }
    
      if(a2==0){
    tone(2,freq[mode][1],10);
    }
      if(a3==0){
    tone(2,freq[mode][2],10);
    } 
     if(a4==0){
    tone(2,freq[mode][3],10);
    } 
     if(a5==0){
    tone(2,freq[mode][4]);
    } 
     if(a6==0){
    tone(2,freq[mode][5]);
    } 
     if(a7==0){
    tone(2,freq[mode][6]);
    } 
    if(a8==0){
    tone(2,freq[mode][7]);
    } 
    if(a9==0){
    tone(2,freq[mode][8]);
    } 
    if(a10==0){
    tone(2,freq[mode][9]);
    } 
   if(a1==1 & a2==1 & a3==1 & a4==1 & a5==1 & a6==1 & a7==1 & a8==1 & a9==1 & a10==1){                         // if all sensor inputs high, stop audio
    noTone(2);
    } 
  //ton = ton+100;

  // put your main code here, to run repeatedly:                                              

}