/************************************************************************** //https://www.hackster.io/giobbino/easiest-tictactoe-with-and-without-an-oled-display-f06231 * * TicTacToe - Serial monitor version. * Note: the OLED version code is better described; if you have any * doubt about any instruction, please take a look to that version. **************************************************************************/ #include #define trigPinLeft 2 #define echoPinLeft 8 #define trigPinRight 12 #define echoPinRight 7 Servo servoleft; Servo servoright; int soundleft = 250; int soundright = 250; int TestSwitchPin = 2; int gameStatus = 0; int whosplaying = 0; //0 = Arduino, 1 = Human int winner = -1; //-1 = Playing, 0 = Draw, 1 = Human, 2 = CPU int board[]={0,0,0, 0,0,0, 0,0,0}; //0 = blank, 1 = human (circle), 2 = computer (cross) //-------------------------------------------------------------------------------------------------------- void playhuman() { int humanMove = -1; bool stayInLoop = true; while (stayInLoop) { Serial.println(F("\nMake your move\n")); while (Serial.available() && Serial.read()); // empty buffer while (!Serial.available()); // wait for data if (Serial.available()) { //data available. int humanMove = Serial.read() - 48; //serial.read() return the ascii value of the pressed key. The "1" ascii value is 49. Serial.println(humanMove); if (humanMove >=0 && humanMove <=9) { if (board[humanMove-1] !=0) { Serial.println(F("\nError - Cell already in use")); stayInLoop = true; } else { stayInLoop = false; board[humanMove-1] = 1; //remember: the player uses the 1..9 keys, but the array index starts by 0 (9 cells = 0..8) } } else { Serial.println(F("\ntype error (just 1 to 9)")); stayInLoop = true; } } } } //-------------------------------------------------------------------------------------------------------- void playcpu() { int cpumove = checkboard(2); //2 = cpu let's check if there's a cpu's winner move if (cpumove >=0) { board[cpumove] = 2; //cpu's winner move } else { cpumove = checkboard(1); //1=player check if the player has a chance to win (2 circles and an empty cell in a row) if (cpumove >=0) { board[cpumove] = 2; //this move will break the player's winner move } //there's no possible winner move neither for the cpu, nor for the human, I will put an "X" in a random cell while (cpumove < 0) { int randomMove = random(10); if (randomMove >=0 && randomMove <=8 && board[randomMove] == 0) { cpumove = randomMove; } } board[cpumove] = 2; } } //-------------------------------------------------------------------------------------------------------- int checkboard(int x){ //x = 1 -> player, x = 2 -> cpu //full case if (board[0]==0 && board[1]==x && board[2]==x) return 0; // 0 1 1 // . . . // . . . else if (board[0]==x && board[1]==0 && board[2]==x) return 1; // 1 0 1 // . . . // . . . else if (board[0]==x && board[1]==x && board[2]==0) return 2; // 1 1 0 // . . . // . . . //------------------------------------------------- else if (board[3]==0 && board[4]==x && board[5]==x) return 3; // . . . // 0 1 1 // . . . else if (board[3]==x && board[4]==0 && board[5]==x) return 4; // . . . // 1 0 1 // . . . else if (board[3]==x && board[4]==x && board[5]==0) return 5; // . . . // 1 1 0 // . . . //------------------------------------------------- else if (board[6]==0 && board[7]==x && board[8]==x) return 6; // . . . // . . . // 0 1 1 else if (board[6]==x && board[7]==0 && board[8]==x) return 7; // . . . // . . . // 1 0 1 else if (board[6]==x && board[7]==x && board[8]==0) return 8; // . . . // . . . // 1 1 0 //------------------------------------------------- else if (board[0]==0 && board[3]==x && board[6]==x) return 0; // 0 . . // 1 . . // 1 . . else if (board[0]==x && board[3]==0 && board[6]==x) return 3; // 1 . . // 0 . . // 1 . . else if (board[0]==x && board[3]==x && board[6]==0) return 6; // 1 . . // 1 . . // 0 . . //------------------------------------------------- else if (board[1]==0 && board[4]==x && board[7]==x) return 1; // . 0 . // . 1 . // . 1 . else if (board[1]==x && board[4]==0 && board[7]==x) return 4; // . 1 . // . 0 . // . 1 . else if (board[1]==x && board[4]==x && board[7]==0) return 7; // . 1 . // . 1 . // . 0 . //------------------------------------------------- else if (board[2]==0 && board[5]==x && board[8]==x) return 2; // . . 0 // . . 1 // . . 1 else if (board[2]==x && board[5]==0 && board[8]==x) return 5; // . . 1 // . . 0 // . . 1 else if (board[2]==x && board[5]==x && board[8]==0) return 8; // . . 1 // . . 1 // . . 0 //------------------------------------------------- else if (board[0]==0 && board[4]==x && board[8]==x) return 0; // 0 . . // . 1 . // . . 1 else if (board[0]==x && board[4]==0 && board[8]==x) return 4; // 1 . . // . 0 . // . . 1 else if (board[0]==x && board[4]==x && board[8]==0) return 8; // 1 . . // . 1 . // . . 0 //------------------------------------------------- else if (board[2]==0 && board[4]==x && board[6]==x) return 2; // . . 0 // . 1 . // 1 . . else if (board[2]==x && board[4]==0 && board[6]==x) return 4; // . . 1 // . 0 . // 1 . . else if (board[2]==x && board[4]==x && board[6]==0) return 6; // . . 1 // . 1 . // 0 . . else return -1; } //-------------------------------------------------------------------------------------------- void checkWinner() { //check the board to see if there is a winner winner = 3; //3=draft, 1= winner->player, 2=winner->cpu // circles win? if (board[0]==1 && board[1]==1 && board[2]==1) winner=1; else if (board[3]==1 && board[4]==1 && board[5]==1) winner=1; else if (board[6]==1 && board[7]==1 && board[8]==1) winner=1; else if (board[0]==1 && board[3]==1 && board[6]==1) winner=1; else if (board[1]==1 && board[4]==1 && board[7]==1) winner=1; else if (board[2]==1 && board[5]==1 && board[8]==1) winner=1; else if (board[0]==1 && board[4]==1 && board[8]==1) winner=1; else if (board[2]==1 && board[4]==1 && board[6]==1) winner=1; // crosses win? else if (board[0]==2 && board[1]==2 && board[2]==2) winner=2; else if (board[3]==2 && board[4]==2 && board[5]==2) winner=2; else if (board[6]==2 && board[7]==2 && board[8]==2) winner=2; else if (board[0]==2 && board[3]==2 && board[6]==2) winner=2; else if (board[1]==2 && board[4]==2 && board[7]==2) winner=2; else if (board[2]==2 && board[5]==2 && board[8]==2) winner=2; else if (board[0]==2 && board[4]==2 && board[8]==2) winner=2; else if (board[2]==2 && board[4]==2 && board[6]==2) winner=2; if (winner == 3) { for(int i=0;i<9;i++) if (board[i]==0) winner=0; //there are some empty cell yet. } } //-------------------------------------------------------------------------------------------------------------- void resetGame() { Serial.println("Resetting game..."); for(int i=0;i<9;i++) board[i]=0; winner = 0; gameStatus = 0; } //-------------------------------------------------------------------------------------------------------------- void boardDrawing() { Serial.println(""); Serial.print(F(" ")); Serial.print(charBoard(0)); Serial.print(F(" | ")); Serial.print(charBoard(1)); Serial.print(F(" | ")); Serial.println(charBoard(2)); Serial.println(F(" ---+---+---")); Serial.print(F(" ")); Serial.print(charBoard(3)); Serial.print(F(" | ")); Serial.print(charBoard(4)); Serial.print(F(" | ")); Serial.println(charBoard(5)); Serial.println(F(" ---+---+---")); Serial.print(F(" ")); Serial.print(charBoard(6)); Serial.print(F(" | ")); Serial.print(charBoard(7)); Serial.print(F(" | ")); Serial.println(charBoard(8)); Serial.println(""); } //-------------------------------------------------------------------------------------------------------------- String charBoard(int x) { if (board[x] == 0) return " "; if (board[x] == 1) return "o"; if (board[x] == 2) return "x"; return "?"; //error trap; it shouldn't pass here. } //-------------------------------------------------------------------------------------------------------------- void setup() { Serial.begin(9600); randomSeed(analogRead(0)); //resetting the random function. pinMode(A0, INPUT); pinMode(trigPinLeft, OUTPUT); pinMode(echoPinLeft, INPUT); pinMode(trigPinRight, OUTPUT); pinMode(echoPinRight, INPUT); servoleft.attach(6); servoright.attach(5); } //-------------------------------------------------------------------------------------------------------------- void loop() { long durationLeft, distanceLeft, durationRight, distanceRight; digitalWrite(trigPinLeft, LOW); delayMicroseconds(2); digitalWrite(trigPinLeft, HIGH); delayMicroseconds(10); digitalWrite(trigPinLeft, LOW); durationLeft = pulseIn(echoPinLeft, HIGH); distanceLeft = (durationLeft/2) / 29.1; servoleft.write(90); // RIGHT SIDE digitalWrite(trigPinRight, LOW); delayMicroseconds(2); digitalWrite(trigPinRight, HIGH); delayMicroseconds(10); digitalWrite(trigPinRight, LOW); durationRight = pulseIn(echoPinRight, HIGH); distanceRight = (durationRight/2) / 29.1; servoright.write(90); if (distanceLeft<10) { servoleft.write(60); servoright.write(60); } //RIGHT SIDE DETECTION if (distanceRight<10) { servoleft.write(109); servoright.write(109); } else { } delay(500); int lightRead = analogRead(A0); //Serial.println(lightRead); #print photoresistor value if (lightRead > 600){ //Start game if light is covered, using 10 kOhm resisor if (gameStatus == 0){ Serial.println(F("A game for those who seek to find / a way to leave their world behind. The first player to reach the end wins. \nAdventurers beware: do not begin unless you intend to finish....")); whosplaying = 2; while ( whosplaying <0 || whosplaying > 1) { whosplaying = random(2); } gameStatus = 1; winner = 0; } //--------------------------------------------- if (gameStatus == 1){ //start if (whosplaying == 1) boardDrawing(); while (winner == 0) { //game main loop if (whosplaying == 0) { Serial.println("CPU turn:"); playcpu(); whosplaying =1; } else { Serial.println("Player turn:"); playhuman(); whosplaying =0; } boardDrawing(); checkWinner(); //this will assign the winner variable if (winner > 0) { Serial.println(""); if (winner == 3) Serial.print(F("Tie!")); else { Serial.print(F("JUMANJI ")); if (winner == 1) Serial.println(F("the human")); else Serial.println(F("the CPU")); } } } resetGame(); Serial.println(""); delay(2000); Serial.println(""); Serial.flush(); } } }