//ZZZ-Skee-4 player
// Define segment pins
const int segmentPins[] = {2, 3, 4, 5, 6, 7, 8, 9}; // A, B, C, D, E, F, G, DP
// Define digit pins
//Remember to specify Common Cathode or Common Anode LEDs!!!!!!!!!!!!!!!!!!
const int digitPins[] = {10, 11, 12, 13}; // Digit 1, Digit 2, Digit 3, Digit 4

// Segment patterns for digits 0-9 (common cathode)
const byte digitPatterns[] = {
  0b00111111, // 0
  0b00000110, // 1
  0b01011011, // 2
  0b01001111, // 3
  0b01100110, // 4
  0b01101101, // 5
  0b01111101, // 6
  0b00000111, // 7
  0b01111111, // 8
  0b01101111  // 9
};
////////////////////////////////////////////////////
#define NUM_BUTTONS 6 //Scoring switches.
int buttonPins[NUM_BUTTONS] = {A0, A1, A2, A3, A4, A5}; // Analog pins for buttons
//int buttonPins[NUM_BUTTONS] = {2, 3, 4}; // GPIO pins for buttons
int buttonStates[NUM_BUTTONS];
int lastButtonStates[NUM_BUTTONS];
unsigned long lastDebounceTimes[NUM_BUTTONS];

const int DEBOUNCE_TIME = 50; //50 ms, the time 
////////////////////////////////////////////////////
const int buttonPin = 9; //Button to select player.
int buttonState = 0;  
int lastButtonState = 0;  
int playerNum = 1;  
//int digit4Mod;
int P1_total;
int P2_total;
int P3_total;
int P4_total;

void setup() {
  // Set segment pins as outputs
  for (int i = 0; i < 8; i++) {
    pinMode(segmentPins[i], OUTPUT);
  }
  // Set digit pins as outputs
  for (int i = 0; i < 4; i++) {
    pinMode(digitPins[i], OUTPUT);
  }

Serial.begin(9600);
////////////////////////////////////////////////////////
    for (int i = 0; i < NUM_BUTTONS; i++) {
        pinMode(buttonPins[i], INPUT_PULLUP);
        buttonStates[i] = HIGH;
        lastButtonStates[i] = HIGH;
        lastDebounceTimes[i] = 0;
    }
////////////////////////////////////////////////////////
pinMode(buttonPin, INPUT_PULLUP);  
P1_total = 0;
P2_total = 0;
P3_total = 0;
P4_total = 0;
playerNum = 1;
}//End Setup()

void loop() {
//Button to select player order.
    buttonState = digitalRead(buttonPin);  
//if (buttonState == HIGH && lastButtonState == LOW) { 
  if (buttonState == LOW && lastButtonState == HIGH) {     
    playerNum++;  
    if (playerNum > 4) //Counter limit.
    {
    playerNum = 1;
    }
    //Serial.println("OK"); 
  //  Serial.print("Player: ");
  //  Serial.println(playerNum);
    delay(50);  // Debounce delay - 200
  }  
  lastButtonState = buttonState; 
  //////////////////////////////////////////////////
  //Buttons for scoring.
    //Button selection and debounce handler
    for (int i = 0; i < NUM_BUTTONS; i++) {
        int reading = digitalRead(buttonPins[i]);
        if (reading != lastButtonStates[i]) {
            lastDebounceTimes[i] = millis();
        }
        if ((millis() - lastDebounceTimes[i]) > DEBOUNCE_TIME) {
            if (reading != buttonStates[i]) {
                buttonStates[i] = reading;
                if (buttonStates[i] == LOW) {
                    handleButtonPress(i);
                  if (playerNum == 1){
                  Serial.print("P1 total score: ");
                  Serial.println(P1_total);
                  }
                  else if (playerNum == 2){
                  Serial.print("P2 total score: ");
                  Serial.println(P2_total);
                  }
                  else if (playerNum == 3){
                  Serial.print("P3 total score: ");
                  Serial.println(P3_total);
                  }
                  else if (playerNum == 4){
                  Serial.print("P4 total score: ");
                  Serial.println(P4_total);
                  }
                }
            }
        }
        lastButtonStates[i] = reading;
    }

//////////////////////////////////////////
  //Show number in SevenSegment LED.
 if (playerNum == 1) {
    displayNumber(P1_total);
} else if (playerNum == 2) {
    displayNumber(P2_total);
} else if (playerNum == 3) {
    displayNumber(P3_total);
} else if (playerNum == 4) {
    displayNumber(P4_total);
} else {
    // Code to execute if none of the above conditions are true
}

} //End loop()

void displayNumber(int number) {
//Show player number. Zero-based index 3 (Digit 4).
    setSegments(digitPatterns[playerNum]); // Set segments for the digit
    digitalWrite(digitPins[3], LOW); // Activate the digit
    delay(5); // Short delay for multiplexing
    digitalWrite(digitPins[3], HIGH); // Deactivate the digit

//Show score. (Digit 1 to 3).
  for (int digit = 0; digit < 3; digit++) {
    int digitValue = (number / (int)pow(10, digit)) % 10; // Extract digit
    setSegments(digitPatterns[digitValue]); // Set segments for the digit
    digitalWrite(digitPins[digit], LOW); // Activate the digit
    delay(5); // Short delay for multiplexing
    digitalWrite(digitPins[digit], HIGH); // Deactivate the digit
  }
}

void setSegments(byte pattern) {
  for (int i = 0; i < 8; i++) {
    digitalWrite(segmentPins[i], (pattern >> i) & 0x01); // Set each segment
  }
}
////////////////////////
//Button selected - code for selected button.
void handleButtonPress(int buttonIndex) {
    // Implement logic for each button press
    //Use case statement to handle each pushbutton.
switch(buttonIndex) {
    case 0:
        // code to execute for value1
  if (playerNum == 1) {
    P1_total = P1_total + 10;
} else if (playerNum == 2) {
    P2_total = P2_total + 10;
} else if (playerNum == 3) {
    P3_total = P3_total + 10;
} else if (playerNum == 4) {
    P4_total = P4_total + 10;
} else {
    // Code to execute if none of the above conditions are true
}
  //digitalWrite(ledPin, HIGH);
  delay(100);
  //digitalWrite(ledPin, LOW);
  //Serial.println("Button #1 pressed!");
        break;
    case 1:
        // code to execute for value2
 if (playerNum == 1) {
    P1_total = P1_total + 20;
} else if (playerNum == 2) {
    P2_total = P2_total + 20;
} else if (playerNum == 3) {
    P3_total = P3_total + 20;
} else if (playerNum == 4) {
    P4_total = P4_total + 20;
} else {
    // Code to execute if none of the above conditions are true
}
  //digitalWrite(ledPin, HIGH);
  delay(100);
  //digitalWrite(ledPin, LOW);
  //Serial.println("Button #2 pressed!");
        break;
     case 2:
        // code to execute for value3
  if (playerNum == 1) {
    P1_total = P1_total + 30;
} else if (playerNum == 2) {
    P2_total = P2_total + 30;
} else if (playerNum == 3) {
    P3_total = P3_total + 30;
} else if (playerNum == 4) {
    P4_total = P4_total + 30;
} else {
    // Code to execute if none of the above conditions are true
}
  //digitalWrite(ledPin, HIGH);
  delay(100);
  //digitalWrite(ledPin, LOW);
  //Serial.println("Button #3 pressed!");
        break;
    case 3:
        // code to execute for value4
  if (playerNum == 1) {
    P1_total = P1_total + 40;
} else if (playerNum == 2) {
    P2_total = P2_total + 40;
} else if (playerNum == 3) {
    P3_total = P3_total + 40;
} else if (playerNum == 4) {
    P4_total = P4_total + 40;
} else {
    // Code to execute if none of the above conditions are true
}
  //digitalWrite(ledPin, HIGH);
  delay(100);
  //digitalWrite(ledPin, LOW);
  //Serial.println("Button #4 pressed!");
        break;
    case 4:
        // code to execute for value5
  if (playerNum == 1) {
    P1_total = P1_total + 50;
} else if (playerNum == 2) {
    P2_total = P2_total + 50;
} else if (playerNum == 3) {
    P3_total = P3_total + 50;
} else if (playerNum == 4) {
    P4_total = P4_total + 50;
} else {
    // Code to execute if none of the above conditions are true
}
  //digitalWrite(ledPin, HIGH);
  delay(100);
  //digitalWrite(ledPin, LOW);
  //Serial.println("Button #5 pressed!");
       break;
    case 5:
        // code to execute for value6
  if (playerNum == 1) {
    P1_total = P1_total + 100;
} else if (playerNum == 2) {
    P2_total = P2_total + 100;
} else if (playerNum == 3) {
    P3_total = P3_total + 100;
} else if (playerNum == 4) {
    P4_total = P4_total + 100;
} else {
    // Code to execute if none of the above conditions are true
}
  //digitalWrite(ledPin, HIGH);
  delay(100);
  //digitalWrite(ledPin, LOW);
  //Serial.println("Button #6 pressed!");
        break;
   default:
        // code to execute if no cases match
        break;
  }
}