In this Project, we will see about how to make Simon Says Game with Arduino.
Circuit Diagram:
Arduino Code:
simon_says_game_code.ino
#define PLAYER_WAIT_TIME 2000 // The time allowed between button presses - 2s byte sequence[100]; // Storage for the light sequence byte curLen = 0; // Current length of the sequence byte inputCount = 0; // The number of times that the player has pressed a (correct) button in a given turn byte lastInput = 0; // Last input from the player byte expRd = 0; // The LED that's suppose to be lit by the player bool btnDwn = false; // Used to check if a button is pressed bool wait = false; // Is the program waiting for the user to press a button bool resetFlag = false; // Used to indicate to the program that once the player lost byte noPins = 4; // Number of buttons/LEDs (While working on this, I was using only 2 LEDs) // You could make the game harder by adding an additional LED/button/resistors combination. byte pins[] = {4, 5, 6, 7}; // Button input pins and LED ouput pins - change these vaules if you wwant to connect yourbuttons to other pins // The number of elements must match noPins below long inputTime = 0; // Timer variable for the delay between user inputs void setup() { delay(3000); // This is to give me time to breathe after connection the arduino - can be removed if you want Serial.begin(9600); // Start Serial monitor. This can be removed too as long as you remove all references to Serial below Reset(); } /// /// Sets all the pins as either INPUT or OUTPUT based on the value of 'dir' /// void setPinDirection(byte dir) { for (byte i = 0; i < noPins; i++) { pinMode(pins[i], dir); } } //send the same value to all the LED pins void writeAllPins(byte val) { for (byte i = 0; i < noPins; i++) { digitalWrite(pins[i], val); } } /// /// Flashes all the LEDs together /// freq is the blink speed - small number -> fast | big number -> slow /// void flash(short freq) { setPinDirection(OUTPUT); /// We're activating the LEDS now for (int i = 0; i < 5; i++) { writeAllPins(HIGH); delay(freq); writeAllPins(LOW); delay(freq); } } /// ///This function resets all the game variables to their default values /// void Reset() { flash(500); curLen = 0; inputCount = 0; lastInput = 0; expRd = 0; btnDwn = false; wait = false; resetFlag = false; } /// /// User lost /// void Lose() { flash(50); } /// /// The arduino shows the user what must be memorized /// Also called after losing to show you what you last sequence was /// void playSequence() { //Loop through the stored sequence and light the appropriate LEDs in turn for (int i = 0; i < curLen; i++) { Serial.print("Seq: "); Serial.print(i); Serial.print("Pin: "); Serial.println(sequence[i]); digitalWrite(sequence[i], HIGH); delay(500); digitalWrite(sequence[i], LOW); delay(250); } } /// /// The events that occur upon a loss /// void DoLoseProcess() { Lose(); // Flash all the LEDS quickly (see Lose function) delay(1000); playSequence(); // Shows the user the last sequence - So you can count remember your best score - Mine's 22 by the way :) delay(1000); Reset(); // Reset everything for a new game } /// /// Where the magic happens /// void loop() { if (!wait) { //****************// // Arduino's turn // //****************// setPinDirection(OUTPUT); // We're using the LEDs randomSeed(analogRead(A0)); // https://www.arduino.cc/en/Reference/RandomSeed sequence[curLen] = pins[random(0, noPins)]; // Put a new random value in the next position in the sequence - https://www.arduino.cc/en/Reference/random curLen++; // Set the new Current length of the sequence playSequence(); // Show the sequence to the player wait = true; // Set Wait to true as it's now going to be the turn of the player inputTime = millis(); // Store the time to measure the player's response time } else { //***************// // Player's turn // //***************// setPinDirection(INPUT); // We're using the buttons if (millis() - inputTime > PLAYER_WAIT_TIME) { // If the player takes more than the allowed time, DoLoseProcess(); // All is lost :( return; } if (!btnDwn) { // expRd = sequence[inputCount]; // Find the value we expect from the player Serial.print("Expected: "); // Serial Monitor Output - Should be removed if you removed the Serial.begin above Serial.println(expRd); // Serial Monitor Output - Should be removed if you removed the Serial.begin above for (int i = 0; i < noPins; i++) { // Loop through the all the pins if (pins[i] == expRd) continue; // Ignore the correct pin if (digitalRead(pins[i]) == HIGH) { // Is the buttong pressed lastInput = pins[i]; resetFlag = true; // Set the resetFlag - this means you lost btnDwn = true; // This will prevent the program from doing the same thing over and over again Serial.print("Read: "); // Serial Monitor Output - Should be removed if you removed the Serial.begin above Serial.println(lastInput); // Serial Monitor Output - Should be removed if you removed the Serial.begin above } } } if (digitalRead(expRd) == 1 && !btnDwn) // The player pressed the right button { inputTime = millis(); // lastInput = expRd; inputCount++; // The user pressed a (correct) button again btnDwn = true; // This will prevent the program from doing the same thing over and over again Serial.print("Read: "); // Serial Monitor Output - Should be removed if you removed the Serial.begin above Serial.println(lastInput); // Serial Monitor Output - Should be removed if you removed the Serial.begin above } else { if (btnDwn && digitalRead(lastInput) == LOW) { // Check if the player released the button btnDwn = false; delay(20); if (resetFlag) { // If this was set to true up above, you lost DoLoseProcess(); // So we do the losing sequence of events } else { if (inputCount == curLen) { // Has the player finished repeating the sequence wait = false; // If so, this will make the next turn the program's turn inputCount = 0; // Reset the number of times that the player has pressed a button delay(1500); } } } } } }
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