p-pavan

•

prii

•

gireesh_sai

•

urstrulysaketh

Published July 8, 2022 © MIT

Mini Game

Rock Paper Scissors!

BeginnerShowcase (no instructions)403

Things used in this project

Hardware components

Arduino UNO

Breadboard (generic)

Graphic OLED, 128 x 64

Monochrome OLED Display, 128x64

Tactile Switch, Top Actuated

Jumper wires (generic)

Two male to male wires for VCC and GND Four male to female wires for OLED Display

Resistor 1k ohm

I have used 3 resistors for gnd and 3 more for vcc to connect buttons

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Brain

Story

I did this work as my college mini-project. Initially, my idea was to make a game with a touch screen, but the cost of the project went high. So I have decided to use buttons instead. Let me show you guys how I did it!

The game we have decided on is Rock-Paper-Scissors, it's a typical zero-sum game where one player can either lose or win against other.

In a 1v1 player mode, if each player chooses one out of Rock, Paper, and Scissor, there will be a total of 9 combinations of possibilities which can be either win, lose or draw. The below table shows the possibilities and outcomes of each set.

POSSIBLE OUTCOMES

Now as we got clear about the game logic, we can easily code that using if conditions and display it on the OLED Screen.

To take player's input we use 3 tactile buttons each key representing Rock, Paper, and Scissor respectively.

I have added two modes in the game, one is player vs player and other is player vs computer, In which computer input will be generated randomly. If the game is Draw, it will automatically restart in the same mode until one winner is decided.

I have simulated this on wokwi online simulator.

While using an OLED display that too for the first time, everyone must try displaying bitmap images. I have added one at start showing game theme image.

Check out the code it looks lengthy but damn simple!! Happy coding-ding!

Schematics

Code

Code

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <stdlib.h>

int gameMode;
bool game= true;
long int loopCount=1;
int p1;
int p2;

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define but1 2
#define but2 4
#define but3 7

#define ROCK 1
#define PAPER 2
#define SCISSOR 3

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

const unsigned char myBitmap[] = { /* bmp */ };

static const unsigned char PROGMEM rps[] = {
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x03, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xC0, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x80, 0x00, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x07, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x70, 0x00, 0x00,
  0x00, 0x00, 0x06, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x0E, 0x00, 0x00, 0x30, 0x00, 0x00,
  0x00, 0x00, 0x0E, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x00, 0x00, 0x30, 0x00, 0x00,
  0x00, 0x00, 0x0C, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x40, 0x00, 0x30, 0x00, 0x00,
  0x00, 0x00, 0x0E, 0xE0, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x0E, 0xE0, 0x00, 0x30, 0x00, 0x00,
  0x00, 0x00, 0x07, 0xE0, 0x03, 0x30, 0x00, 0x00, 0x00, 0x00, 0x07, 0xE0, 0x23, 0xB0, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xE0, 0x73, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE6, 0x77, 0xE0, 0x00, 0x00,
  0x00, 0x00, 0x00, 0xC7, 0x7F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xCF, 0x3E, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x00, 0xCF, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xCF, 0x38, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xCF, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x9F, 0x98, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x01, 0x9D, 0x9C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x99, 0x9C, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x03, 0x99, 0x8C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x39, 0xCC, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x03, 0xB9, 0xDC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xF0, 0xFC, 0x00, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xE0, 0x78, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0x00, 0x00,
  0x00, 0x03, 0x80, 0x00, 0x00, 0xFE, 0x00, 0x00, 0x00, 0x07, 0xC0, 0x00, 0x07, 0xE7, 0x18, 0x00,
  0x00, 0x0F, 0xFC, 0x00, 0x0F, 0xE3, 0xFE, 0x00, 0x00, 0x1C, 0x7E, 0x00, 0x0E, 0x71, 0xFF, 0x00,
  0x00, 0x38, 0xF7, 0xC0, 0x0E, 0x38, 0xE3, 0x80, 0x00, 0x70, 0xE7, 0xE0, 0x1F, 0x1C, 0x71, 0xC0,
  0x00, 0xE0, 0x07, 0x70, 0x3F, 0x8E, 0x38, 0xE0, 0x01, 0xC0, 0x06, 0x70, 0x3B, 0xC7, 0x1C, 0x70,
  0x01, 0xC0, 0x00, 0x78, 0x39, 0xE7, 0x8E, 0x38, 0x03, 0x80, 0x00, 0xFC, 0x1C, 0xF3, 0xC7, 0x1C,
  0x03, 0x80, 0x00, 0x5C, 0x1E, 0x79, 0xC2, 0x0C, 0x03, 0x00, 0x00, 0x0C, 0x3F, 0x3C, 0x00, 0x00,
  0x03, 0x00, 0x00, 0x1C, 0x77, 0x9E, 0x00, 0x00, 0x03, 0x00, 0x00, 0x38, 0x73, 0xCE, 0x00, 0x00,
  0x03, 0x00, 0x00, 0x78, 0x71, 0xC0, 0x00, 0x00, 0x07, 0x00, 0x00, 0xFC, 0x38, 0xE0, 0x00, 0x00,
  0x0E, 0x00, 0x01, 0xCC, 0x1C, 0x70, 0x00, 0x00, 0x1C, 0x00, 0x01, 0x8C, 0x0E, 0x00, 0x00, 0x00,
  0x38, 0x00, 0x00, 0x1C, 0x07, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x38, 0x03, 0x80, 0x00, 0x00,
  0x00, 0x00, 0x00, 0x70, 0x01, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x00, 0xE0, 0x00, 0x00,
  0x00, 0x00, 0x01, 0xC0, 0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x80, 0x00, 0x38, 0x00, 0x00,
  0x00, 0x01, 0xFF, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0x03, 0xFC, 0x00, 0x00, 0x0F, 0xF0, 0x00,
  0x00, 0x07, 0x00, 0x00, 0x00, 0x07, 0xFE, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x00,
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

void setup() {
  Serial.begin(115200);
  pinMode(but1, INPUT);
  pinMode(but2, INPUT);
  pinMode(but3, INPUT);
}

void loop() {
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(1000);
  display.clearDisplay();
  drawCircles();
  display.display();
  // delay(5000);
  display.clearDisplay();
  
  
  if(loopCount == 1) {
  display.clearDisplay();
  displayOLED(1,27,20,"IoT Project");
  displayOLED(1,12,30,"Rock Paper Scissor");
  // display.drawRect(1,1,126,62,WHITE);
  display.display();
  int temp = readButt();
  delay(500);   //Wait 5 Sec
  display.clearDisplay();
  display.drawBitmap(31 , 0, rps, 64, 64,1);
  // display.invertDisplay(true);
  display.display();
  delay(5000);
  }

  display.clearDisplay();  
  displayOLED(1,10,20,"1.Single Player");
  displayOLED(1,10,30,"2.Two Players");
  display.clearDisplay();


  gameMode = readButt(); //Check which mode is selected
  display.clearDisplay();
  if(gameMode==1) displayOLED(1,20,20,"Single Player");
  else if(gameMode==2) displayOLED(1,20,20,"Two Players");
  else displayOLED(1,20,20,"Baryon Mode");
  delay(2000);

game = true;
do{
  display.clearDisplay();
  displayOLED(2,10,20,"Player 1");
  displayOLED(1,10,35,"Rock Paper Scissor");

  p1 = readButt();
  delay(1000);
 
  display.clearDisplay();
  displayOLED(2,10,20,"Player 2");
  displayOLED(1,10,35,"Rock Paper Scissor");
  if(gameMode==1) {
    p2 = askAI();
  } else p2 = readButt();
  delay(1000); 

  game = checkWin(p1,p2);   //checking for winner
  delay(3000);

 }while(game == false);
 loopCount++;
}

void displayOLED(int textSize,int setX, int setY, char str[20]) {
    display.setFont();
    display.setTextColor(WHITE);
    display.setTextSize(textSize);
    display.setTextColor(WHITE);
    display.setCursor(setX, setY);
    display.print(str);
    display.display();  
}

void drawCircles(void) {
  display.clearDisplay();
  for(int16_t i=5; i<90; i+=5) {
    display.drawCircle(63,31, i, WHITE);
    display.display();
    delay(10);
    display.clearDisplay();
  }
}

int readButt() {
  // gameMode = 0;
  // p1=0;
  int val=0;
  while(1) {
  if(digitalRead(but1)==HIGH && digitalRead(but2)==LOW  && digitalRead(but3)==LOW) {
    Serial.println("returning 1 ");
   val = 1;
   break;
  }
  if(digitalRead(but1)==LOW && digitalRead(but2)==HIGH && digitalRead(but3)==LOW) {
    Serial.println("returning 2");
   val = 2;
   break;  
  }
  if(digitalRead(but1)==LOW && digitalRead(but2)==LOW && digitalRead(but3)==HIGH) {
    Serial.println("returning 3 ");
   val = 3;
   break;
  }
 }
  return val;
}

int askAI() {
  int srand = (rand()%3) + 1;
  Serial.print("returning ");
  Serial.println(srand);
  return srand;
}

bool checkWin(int p1, int p2) {
  display.clearDisplay();
  if(p1==p2) {
    displayOLED(2,20,20,"Draw");
    displayOLED(1,20,35,"Restart");
    return false;
  }
  if(p1==ROCK && p2==PAPER) { 
    displayOLED(1,20,20,"Rock looses to Paper");
    return true;
  } else if(p1==ROCK && p2==SCISSOR) { 
    displayOLED(1,20,20,"Rock beats Scissor");
    return true;
  } else if(p1==PAPER && p2==ROCK) { 
    displayOLED(1,20,20,"Paper beats Rock");
    return true;
  } else if(p1==PAPER && p2==SCISSOR) { 
    displayOLED(1,20,20,"Paper looses to Scissor");
    return true;
  } else if(p1==SCISSOR && p2==ROCK) { 
    displayOLED(1,20,20,"Scissor looses to Rock");
    return true;
  } else if(p1==SCISSOR && p2==PAPER) { 
    displayOLED(1,20,20,"Scissor beats Paper");
    return true;
  }
}

Mini Game

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Custom parts and enclosures

Wokwi Simulator

Schematics

Connections

Code

Code

Credits

p-pavan

prii

gireesh_sai

urstrulysaketh

Comments

Embed the widget on your own site

Mini Game

Mini Game

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Custom parts and enclosures

Wokwi Simulator

Schematics

Connections

Code

Code

Credits

p-pavan

prii

gireesh_sai

urstrulysaketh

Comments

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