C++ SFML Kütüphanesi ile Yilan Oyunu

#include <SFML/Graphics.hpp>
#include <time.h>
#define GAMEWIDTH 800
#define GAMEHEIGTH 600
#define GAMETITLE "Yilan oyunu"
#define SIZE 100
#define SnakeSize 40
using namespace sf;

int main() {
	int i, j, x = 0, y = 0, size = 0;
	int getX=GAMEWIDTH/2, getY=GAMEHEIGTH/2, appleX, appleY, snakeX, snakeY;
	float timer = 0, delay = 0.1;
	bool keyR = false, keyU = false, keyD = false, keyL = false;
	srand(time(NULL));
	
	RenderWindow window(VideoMode(GAMEWIDTH, GAMEHEIGTH), GAMETITLE, Style::Close);

	RectangleShape snake[SIZE], apple(Vector2f(SnakeSize - 5, SnakeSize - 5));
	for (i = 0; i < 100; i++) {
		snake[i].setSize(Vector2f(SnakeSize - 5, SnakeSize - 5));
		snake[i].setPosition(Vector2f(-40, 0));
		snake[i].setOutlineThickness(3);
		snake[i].setOutlineColor(Color::Black);
	}
	snake[0].setPosition(GAMEWIDTH / 2, GAMEHEIGTH / 2 - 20);
	snake[0].setFillColor(Color::Black);

	apple.setFillColor(Color::Red);

	x = (rand() % 19) * SnakeSize;
	y = (rand() % 14) * SnakeSize;
	apple.setPosition(x, y);

	appleX = apple.getPosition().x;
	appleY = apple.getPosition().y;

	Font font;
	font.loadFromFile("bebas.ttf");

	Text score("SKOR: ", font, 30);
	score.setPosition(20, 20);
	std::string skor;
	skor = score.getString();
	Clock clock;
	
	while (window.isOpen()) {
		float time = clock.getElapsedTime().asSeconds();
		timer += time;
		clock.restart();
		Event event;

		while (window.pollEvent(event)) {

			if (event.type == Event::Closed)
				window.close();
			if (event.type == Event::KeyPressed) {
				if (event.key.code == Keyboard::Right && !keyL) {
					keyL = keyU = keyD = false;
					keyR = true;
				}
				if (event.key.code == Keyboard::Left && !keyR) {
					keyD = keyR = keyU = false;
					keyL = true;
				}
				if (event.key.code == Keyboard::Up && !keyD) {
					keyD = keyL = keyR = false;
					keyU = true;
				}
				if (event.key.code == Keyboard::Down && !keyU) {
					keyU = keyL = keyR = false;
					keyD = true;
				}
			}

			
		}
		if (timer > delay) {
			for (i = size; i > 0; i--) {
				snakeX = snake[i - 1].getPosition().x;
				snakeY = snake[i - 1].getPosition().y;
				snake[i].setPosition(snakeX, snakeY);
			}
			getX = snake[0].getPosition().x;
			getY = snake[0].getPosition().y;

			if (keyR) {
				snake[0].setPosition(getX + SnakeSize, getY);
			}

			if (keyL) {
				snake[0].setPosition(getX - SnakeSize, getY);
			}

			if (keyU) {
				snake[0].setPosition(getX, getY - SnakeSize);
			}

			if (keyD) {
				snake[0].setPosition(getX, getY + SnakeSize);
			}
			timer = 0;
		}

		for (i = 1; i < size; i++) {
			if (snake[0].getPosition().x == snake[i].getPosition().x && snake[0].getPosition().y == snake[i].getPosition().y) {
				snake[0].setPosition(GAMEWIDTH / 2, GAMEHEIGTH / 2 - 20);
				keyU = keyL = keyD = keyR = false;
				size = 0;
				for (j = 1; j < 100; j++) {
					snake[j].setPosition(Vector2f(-40, 0));
				}
			}
		}

		if (snake[0].getPosition().x < 0 || snake[0].getPosition().x > 760 || snake[0].getPosition().y < 0 || snake[0].getPosition().y > 560) {
			snake[0].setPosition(GAMEWIDTH / 2, GAMEHEIGTH / 2 - 20);
			keyU = keyL = keyD = keyR = false;
			size = 0;
			for (i = 1; i < 100; i++) {
				snake[i].setPosition(Vector2f(-40, 0));
			}
		}

		if (getX == appleX && getY == appleY) {
			x = (rand() % 19) * SnakeSize;
			y = (rand() % 14) * SnakeSize;
			for (i = 0; i < size; i++) {
				if (snake[i].getPosition().x == x && snake[i].getPosition().y == y) {
					x = (rand() % 19) * SnakeSize;
					y = (rand() % 14) * SnakeSize;
					i = 0;
				}
			}
			apple.setPosition(x, y);
			appleX = apple.getPosition().x;
			appleY = apple.getPosition().y;
			size++;
		}
		

		window.clear(Color::Cyan);
		for (i = 0; i <= size; i++) {
			window.draw(snake[i]);
		}
		window.draw(apple);
		score.setString(skor + std::to_string(size + 1));
		window.draw(score);
		window.display();
	}



	return 0;
}