//Petra Rutanen final project code, Fab academy 2023

#include <SoftwareSerial.h>
#include <Wire.h>              //for I2C bus as peripheral
#include <Adafruit_SSD1306.h>  //for OLED
#include <EncButton2.h>       
#include <Adafruit_GFX.h>
#include <GParser.h>  //install from a zip library included

#define rxPin 27  // recieves signal from bridge
#define txPin 28  // transmit signal to the bridge

#define SCREEN_WIDTH 128  // OLED display width, in pixels
#define SCREEN_HEIGHT 64  // OLED display height, in pixels


const int BUTTON_PIN = 2;     // the number of the pushbutton pin GPIO Arduino
int score = 0;                // variable to store score
long gameDuration = 30000;    //game duration 30s
int nodeTimeout = 5000;       //node timeout 5s
int numberOfNodes = 2;        // number of nodes
unsigned long gameStartTime;  //variable to store game start time

SoftwareSerial mySerial(rxPin, txPin);
EncButton2<EB_BTN> btn(INPUT_PULLUP, BUTTON_PIN);

//Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

char nodes[] = { '1', '2', '3', '4', '5', '6' };
//nodes[0]  = 1

void setup() {
  Serial.begin(115200);
  while (!Serial) {
    delay(10);
  }
  mySerial.begin(9600);


  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {  // Address 0x3D for 128x64
    //Serial.println(F("SSD1306 allocation failed"));
    for (;;)
      ;
  }
  delay(2000);
  startMessage();
}


void loop() {
  btn.tick();                  // check button for clicks
  if (btn.click()) {           // if button is clicked
    score = 0;                 // zero score
    gameMessage();             // display message during the game
    gameStartTime = millis();  // save start time
    Serial.println("GameStarted");
    while (millis() - gameStartTime < gameDuration) {  // while the time is not out
      int callNode = random(numberOfNodes);            //random 0..numberOfNodes
      mySerial.println(nodes[callNode]);               //send random node number to serial
      long callTime = millis();                        //save time when te node was triggered
      Serial.print("Node ");
      Serial.print(nodes[callNode]);
      Serial.println(" is triggered");
      while (millis() - callTime < nodeTimeout) {  // check serial before nodeTimeout
        gameMessage2(callNode);
      }
    }
    gameOver();
  }
}




void startMessage() {
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0, 10);
  display.println("Press Button to START!");
  display.display();
}

void gameOver() {
  display.clearDisplay();
  display.setCursor(0, 10);
  display.println("Game Ended");
  display.print("Score: ");
  display.println(score);
  display.display();
}

void gameMessage() {
  display.clearDisplay();
  display.setCursor(0, 10);
  display.println("Targets Hit: ");
  display.println(score);
  display.display();
}
void gameMessage2(int node) {
  display.clearDisplay();
  display.setCursor(0, 10);
  display.println("Node ");
  display.println(node + 1);
  display.display();
}