Friends, this game starts automatically.
What I want is to add a button (so that the game starts when the button is pressed).
Button (A0)
Where and how should I add the code?
https://wokwi.com/projects/454143470040826881
/*Arduino Whack-A-Mole Game
by mircemk, June 2025
*/
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
// Pin Definitions
const int buttonPins[] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 12}; // Button pins
const int ledPins[] = {14, 15, 16, 17, 18, 19, 20, 21, 22, 23}; // LED pins
const int buzzerPin = 13; // Buzzer pin (digital 13)
const int numMoles = 10; // Number of moles/buttons/LEDs
// Game variables
int currentMole = -1; // Current mole (LED) to be lit
int score = 0; // Player's score
unsigned long reactionTime = 1000; // Initial reaction time (milliseconds)
unsigned long lastMoleTime = 0; // Time when the last mole was lit
unsigned long gameStartTime = 0; // Start time of the game
unsigned long gameDuration = 30000; // Total game duration (30 seconds)
// Reaction time adjustment
const unsigned long reactionTimeDecrement = 0; // Time to reduce reaction by (milliseconds)
const unsigned long minReactionTime = 0; // Minimum reaction time (milliseconds)
void setup() {
lcd.backlight();
lcd.begin(16, 2);
lcd.clear();
lcd.setCursor(2, 0);
lcd.print("Whack-a-Mole");
lcd.setCursor(3, 1);
lcd.print("by mircemk");
delay(2000);
lcd.clear();
// Initialize button pins and LED pins
for (int i = 0; i < numMoles; i++) {
pinMode(buttonPins[i], INPUT_PULLUP); // Set button pins as input with pull-up resistors
pinMode(ledPins[i], OUTPUT); // Set LED pins as output
digitalWrite(ledPins[i], LOW); // Turn off all LEDs initially
}
pinMode(buzzerPin, OUTPUT); // Set buzzer pin as output
Serial.begin(9600); // For debugging and displaying the score
randomSeed(analogRead(0)); // Initialize random seed from an unused analog pin
Serial.println("Whack-a-Mole Game Started!");
lcd.setCursor(2, 0);
lcd.print("GAME STARTED!");
delay(500);
lcd.clear();
gameStartTime = millis(); // Record game start time
}
void loop() {
unsigned long currentMillis = millis(); // Get the current time
// Update the progress bar
unsigned long elapsedTime = currentMillis - gameStartTime;
if (elapsedTime <= gameDuration) {
int barLength = map(gameDuration - elapsedTime, 0, gameDuration, 0, 16);
lcd.setCursor(0, 1);
for (int i = 0; i < 16; i++) {
lcd.print(i < barLength ? '-' : ' '); // Print '-' for remaining time, ' ' for elapsed
}
}
// Light up a mole after a certain amount of time (based on reactionTime)
if (currentMillis - lastMoleTime >= reactionTime) {
if (currentMole != -1) {
digitalWrite(ledPins[currentMole], LOW); // Turn off the previous mole
}
currentMole = random(0, numMoles); // Randomly pick a mole (LED)
digitalWrite(ledPins[currentMole], HIGH); // Light up the chosen LED
lastMoleTime = currentMillis; // Update the time when the mole was lit
}
// Check if the player pressed the correct button for the lit mole
for (int i = 0; i < numMoles; i++) {
if (digitalRead(buttonPins[i]) == LOW) { // Button pressed (LOW due to INPUT_PULLUP)
if (i == currentMole) {
score++; // Correct mole hit
lcd.setCursor(2, 0);
lcd.print(" Score: "); // Clear the score field with extra spaces
lcd.setCursor(12, 0);
lcd.print(score); // Update the score
tone(buzzerPin, 1000, 200); // High-pitched sound (1000Hz) for 200ms
if (reactionTime > minReactionTime) {
reactionTime -= reactionTimeDecrement;
}
} else {
score--; // Wrong mole hit
lcd.setCursor(2, 0);
lcd.print(" Score: "); // Clear the score field with extra spaces
lcd.setCursor(12, 0);
lcd.print(score); // Update the score
tone(buzzerPin, 400, 200); // Low-pitched sound (400Hz) for 200ms
}
digitalWrite(ledPins[currentMole], LOW); // Turn off the current mole
currentMole = -1; // Reset the mole to indicate no active mole
delay(500); // Short delay to debounce button press
}
}
// End the game after the set duration
if (elapsedTime >= gameDuration) {
lcd.setCursor(3, 0);
lcd.print("Game Over! ");
lcd.setCursor(0, 1);
lcd.print("Final Score: ");
lcd.setCursor(13, 1);
lcd.print(" "); // Clear any leftover characters
lcd.setCursor(13, 1);
lcd.print(score); // Print the final score
// Flash all LEDs and play a sound three times
for (int i = 0; i < 3; i++) {
for (int j = 0; j < numMoles; j++) {
digitalWrite(ledPins[j], HIGH);
}
tone(buzzerPin, 1000, 300); // Play sound
delay(300); // Keep LEDs on
for (int j = 0; j < numMoles; j++) {
digitalWrite(ledPins[j], LOW);
}
delay(300); // Keep LEDs off
}
delay(2000); // Pause before resetting the game
lcd.clear();
score = 0;
currentMole = -1;
for (int i = 0; i < numMoles; i++) {
digitalWrite(ledPins[i], LOW);
}
lcd.setCursor(0, 0);
lcd.print(" Start New Game");
delay(5000);
lcd.clear();
gameStartTime = millis();
reactionTime = 1000;
}
}
