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Devrenin Amacı: Çocukluğumuzun meşhur oyunu olan Pong oyununu Arduino ile nasıl yapabileceğimizi ayrıca eğlenirken öğrenmeyi amaç aldık.

Devrenin Çalışma Prensibi: Potansiyometredeki değerlerin değişimleri Arduino tarafından veriler alınır, yazılan kodlar rehberliğinde kendi içinde işleyip ekranda barların sağ ve sola hareketini kontrol ederiz.

Kullanılan Malzemeler:

– Arduino Nano V3
– PCD8544 LCD Ekran (Nokia 5110 )
– 2 x 5K Ohm Potansiyometre
– 12 x 12 Delikli Pertinaks
– Jumper kablolar
– Power Bank

Fritzing Şeması

Bu projemizde nokia 5110 LCD ve iki adet potansiyometre kullanılmaktadır. Oyunumuz iki kişi ile oynanmaktadır . Her bir kullanıcı için ayrı bir potansiyometre vardır . Potansiyometreler ile oyunun kontrolü yapılmaktadır.

Gerekli Kodlar:

#include <Adafruit_PCD8544.h>
#define PIN_SCE 7
#define PIN_RESET 6
#define PIN_DC 5
#define PIN_SDIN 4
#define PIN_SCLK 3
#define LCD_C LOW
#define LCD_D HIGH
#define LCD_X 84
#define LCD_Y 6
int barWidth = 16;
int barHeight = 4;
int ballPerimeter = 4;
unsigned int bar1X = 0;
unsigned int bar1Y = 0;
unsigned int bar2X = 0;
unsigned int bar2Y = LCD_Y * 8 – barHeight;
int ballX = 0;
int ballY = 0;
boolean isBallUp = false;
boolean isBallRight = true;
byte pixels[LCD_X][LCD_Y];
unsigned long lastRefreshTime;
const int refreshInterval = 25;
byte gameState = 1;
byte ballSpeed = 300;
byte player1WinCount = 0;
byte player2WinCount = 0;
byte hitCount = 0;
void setup(){
//Serial.begin(9600);
LcdInitialise();
restartGame();
}
void loop(){
unsigned long now = millis();
if(now – lastRefreshTime > refreshInterval){
update();
refreshScreen();
lastRefreshTime = now;
}
}
void restartGame(){
ballSpeed = 1;
gameState = 1;
ballX = random(0, 60);
ballY = 20;
isBallUp = false;
isBallRight = true;
hitCount = 0;
}
void refreshScreen(){
if(gameState == 1){
for(int y = 0; y < LCD_Y; y++){
for(int x = 0; x < LCD_X; x++){
byte pixel = 0x00;
int realY = y * 8;
// draw ball if in the frame
if(x >= ballX && x <= ballX + ballPerimeter -1 && ballY + ballPerimeter > realY && ballY < realY + 8 ){
byte ballMask = 0x00;
for(int i = 0; i < realY + 8 – ballY; i++){
ballMask = ballMask >> 1;
if(i < ballPerimeter)
ballMask = 0x80 | ballMask;
}
pixel = pixel | ballMask;
}
// draw bars if in the frame
if(x >= bar1X && x <= bar1X + barWidth -1 && bar1Y + barHeight > realY && bar1Y < realY + 8 ){
byte barMask = 0x00;
for(int i = 0; i < realY + 8 – bar1Y; i++){
barMask = barMask >> 1;
if(i < barHeight)
barMask = 0x80 | barMask;
}
pixel = pixel | barMask;
}
if(x >= bar2X && x <= bar2X + barWidth -1 && bar2Y + barHeight > realY && bar2Y < realY + 8 ){
byte barMask = 0x00;
for(int i = 0; i < realY + 8 – bar2Y; i++){
barMask = barMask >> 1;
if(i < barHeight)
barMask = 0x80 | barMask;
}
pixel = pixel | barMask;
}
LcdWrite(LCD_D, pixel);
}
}
} else if(gameState == 2){
}
}
void update(){
if(gameState == 1){
int barMargin = LCD_X – barWidth;
int pot1 = analogRead(A0); //read potentiometers and set the bar positions
int pot2 = analogRead(A1);
bar1X = pot1 / 2 * LCD_X / 512;
bar2X = pot2 / 2 * LCD_X / 512;
if(bar1X > barMargin) bar1X = barMargin;
if(bar2X > barMargin) bar2X = barMargin;
//move the ball now
if(isBallUp)
ballY -= ballSpeed;
else
ballY += ballSpeed;
if(isBallRight)
ballX += ballSpeed;
else
ballX -= ballSpeed;
//check collisions
if(ballX < 1){
isBallRight = true;
ballX = 0;
}
else if(ballX > LCD_X – ballPerimeter – 1){
isBallRight = false;
ballX = LCD_X – ballPerimeter;
}
if(ballY < barHeight){
if(ballX + ballPerimeter >= bar1X && ballX <= bar1X + barWidth){ // ball bounces from bar1
isBallUp = false;
if(ballX + ballPerimeter/2 < bar1X + barWidth/2)
isBallRight = false;
else
isBallRight = true;
ballY = barHeight;
if(++hitCount % 10 == 0 && ballSpeed < 5)
ballSpeed++;
}else{ //player2 wins
gameState = 2;
player2WinCount++;
}
}
if(ballY + ballPerimeter > LCD_Y * 8 – barHeight){
if(ballX + ballPerimeter >= bar2X && ballX <= bar2X + barWidth){ //ball bounces from bar2
isBallUp = true;
if(ballX + ballPerimeter/2 < bar2X + barWidth/2)
isBallRight = false;
else
isBallRight = true;
ballY = LCD_Y * 8 – barHeight – ballPerimeter;
if(++hitCount % 10 == 0 && ballSpeed < 5)
ballSpeed++;
}else{ // player 1 wins
gameState = 2;
player1WinCount++;
}
}
}else if(gameState == 2){
for(int i =0; i < 4; i++){
LcdWrite(LCD_C, 0x0D ); // LCD in inverse mode.
delay(300);
LcdWrite(LCD_C, 0x0C ); // LCD in inverse mode.
delay(300);
}
restartGame();
}
}
void LcdInitialise(void){
pinMode(PIN_SCE, OUTPUT);
pinMode(PIN_RESET, OUTPUT);
pinMode(PIN_DC, OUTPUT);
pinMode(PIN_SDIN, OUTPUT);
pinMode(PIN_SCLK, OUTPUT);
delay(200);
digitalWrite(PIN_RESET, LOW);
delay(500);
digitalWrite(PIN_RESET, HIGH);
LcdWrite(LCD_C, 0x21 ); // LCD Extended Commands.
LcdWrite(LCD_C, 0xB1 ); // Set LCD Vop (Contrast).
LcdWrite(LCD_C, 0x04 ); // Set Temp coefficent. //0x04
LcdWrite(LCD_C, 0x14 ); // LCD bias mode 1:48. //0x13
LcdWrite(LCD_C, 0x0C ); // LCD in normal mode.
LcdWrite(LCD_C, 0x20 );
LcdWrite(LCD_C, 0x80 ); //select X Address 0 of the LCD Ram
LcdWrite(LCD_C, 0x40 ); //select Y Address 0 of the LCD Ram – Reset is not working for some reason, so I had to set these addresses
LcdWrite(LCD_C, 0x0C );
}
void LcdWrite(byte dc, byte data){
digitalWrite(PIN_DC, dc);
digitalWrite(PIN_SCE, LOW);
shiftOut(PIN_SDIN, PIN_SCLK, MSBFIRST, data);
digitalWrite(PIN_SCE, HIGH);
}