#include <Wire.h>

#define PERIPHERAL_COUNT 2
int peripherals[3] = {8, 9, 10};

int latestBumper = 0;
int score = 0;

void setup() {
  Wire.begin();        // join i2c bus (address optional for master)
  Serial.begin(9600);  // start serial for output
}

void loop() {

  bool foundSomething = false;
  bool bumperHasActivated = false;

  Serial.print("{ array: [");

  for (int i=0; i<PERIPHERAL_COUNT; ++i) {

    Wire.requestFrom(peripherals[i], 1);
  
    Serial.print("{");

    if (Wire.available()) {
      foundSomething = true;
      Serial.print("id: ");
      Serial.print(peripherals[i]);
      Serial.print(", value: ");

      while (Wire.available()) { // peripheral may send less than requested
        char c = Wire.read(); // receive a byte as character
        if (c == 'a') {
          Serial.print(1);
          if (latestBumper != i) {
            score = score + 100;
          }
          latestBumper = i;
          bumperHasActivated = true;
        } else if (c == 'b') {
          Serial.print(0);
        }    
      }
    }
    Serial.print("}");
    if (i != PERIPHERAL_COUNT-1) {
      Serial.print(",");
    }
    delay(100);
  }

  Serial.println("] }");

  if (bumperHasActivated == false) {
    latestBumper = 0;
  }

  delay(500);
}