SFML C++ SAMPLE

boll.cpp

#include <iostream>
#include <SFML/Graphics.hpp>
#include <SFML/System/Vector2.hpp>
#include <SFML/Window/Keyboard.hpp>

bool chkFunc(sf::Vector2i pos, sf::Vector2f pos_c) {
	if ( sf::Mouse::isButtonPressed(sf::Mouse::Left) && pos.x >= pos_c.x && pos.x <= pos_c.x+100 && pos.y >= pos_c.y && pos.y <= pos_c.y+100 ) {
		std::cout << "ya1" << "\n";
		return true;
	} else {
		return false;
	}
}

int main() {
	bool chk;

	sf::RenderWindow window(sf::VideoMode(1024, 800), "Boll");
	sf::CircleShape circle;
	circle.setRadius(50);
	circle.setFillColor(sf::Color::Green);
	circle.setPosition(462, 350);
	window.draw(circle);
        window.display();

	while (window.isOpen() ) {
		sf::Event event;
		while (window.pollEvent(event)) {
			if (event.type == sf::Event::Closed)
                		window.close();
			if (sf::Keyboard::isKeyPressed(sf::Keyboard::Escape))
               			 window.close();

			sf::Vector2i pos = sf::Mouse::getPosition(window);
			sf::Vector2f pos_c = circle.getPosition();

			if ( sf::Mouse::isButtonPressed(sf::Mouse::Left) && pos.x >= pos_c.x && pos.x <= pos_c.x+100 && pos.y >= pos_c.y && pos.y <= pos_c.y+100 ) {
				if (event.type == sf::Event::MouseMoved) {
					circle.setPosition(pos.x-50, pos.y-50);
					window.clear();
					window.draw(circle);
					window.display();
				}
			}
			if (event.type == sf::Event::MouseButtonReleased) {
				while (pos_c.y <= 700) {
					chk = chkFunc(pos, pos_c);
					if (chk == true) {
						std::cout << "ya" << "\n";
						break;
					}
					pos_c.y += 1;
					//std::cout << pos_c.y << std::endl;
					circle.setPosition(pos_c.x, pos_c.y);
					window.clear();
					window.draw(circle);
                                        window.display();
				}
			}
		}
	}
}