byte niveau = 1;
byte leds[]={0,1,2,4,8};
byte case_tableau_leds=0;
boolean memoStart=false;
unsigned long temps =0;
unsigned long temps_max=1500;

void setup() {
  Serial.begin(115200);
 DDRB  = 0b00001111;//EEEESSSS
 PORTB = 0b00001111;
 DDRC  = 0b00000000;//xxxxEEEE
 PORTC = 0b00001111;
 DDRD  & 0b01111111;//Exxxxxxx
 PORTD = 0b10000000;
while(PIND>=128){
chenillard();
}
Serial.print("PIND = ");Serial.println(PIND);
memoStart=true;
decompte();
Serial.print(F("niveau "));Serial.println(niveau);
}

void loop() 
{
  //Serial.print(PIND);
 if(PIND<=127){memoStart=!memoStart;niveau++;
 Serial.print("memostart=");Serial.print(memoStart);delay(1000);}

 if(memoStart){
  for (int f=1;f<=niveau;f++){//if(!niveau%3){temps_max*=0.8;}
    Serial.print ("f = ");Serial.print(f);Serial.print('\t');
 case_tableau_leds=random(1,5);
 //Serial.print("  case tableau = ");Serial.print(case_tableau_leds);
 PORTB=leds[case_tableau_leds];
 //Serial.print( "   port B = ");Serial.print(PORTB);
   
   unsigned long deb=millis();
   //temps[PINC][niveau]=(millis()-deb);
   do{
     if (PORTB==((~PINC&0b00001111))){Serial.print("ok");temps =(millis()-deb);if((!niveau%3)&&(f+1==niveau)){temps_max*=0.8;}if(f==niveau){f=0;niveau++;}Serial.print(niveau%3);break;}
     //else{while(1);}
   } while(millis()<=deb+temps_max);
   Serial.print("  ");
   Serial.print("temps = ");
   Serial.print(temps);Serial.print('\t');
   if((f==niveau)&&(!niveau%3)){temps_max*=0.8;}
   Serial.print(F("temps max = "));Serial.print(temps_max);Serial.print('\t');
   Serial.print("  ");
   Serial.print(PORTB);
   Serial.print(" et ");
   Serial.print((~PINC&0b00001111));
   Serial.print ("niveau = ");Serial.print(niveau);Serial.print('\t');
   Serial.print ("f = ");Serial.print(f);Serial.println('\t');
  
   
   //Serial.print("**");
  //Serial.print((PIND&0b10000000));
  //Serial.print("__");
  //Serial.print ((~PINC&0b00001111));
  //delay(1000);
  }
  }
  //delay(1000);
}
//***********************************************************
void chenillard() {
  for (byte f = 1; f <= 4; f++) {
    if (PIND < 128) {
      break;
    }
    PORTB = leds[f]; delay(250);
  }
  for (byte f = 4; f >= 1; f--) {
    if (PIND < 128) {
      break;
    }
    PORTB = leds[f]; delay(250);
  }
}
void comptage_binaire() {
  for (byte f = 0; f < 16; f++)
  {
    PORTB = f; delay(100);
    if (PIND < 128) {
      break;
    }
  }
}
void decompte() {
  Serial.print(F("le jeu va demarrer "));
  for (byte f = 5; f >= 1; f--) {
    Serial.print(f);
    delay(500);
  }
  Serial.println (F(" GO"));
}