How to draw images in SFML and check if the mouse is over them?

[Nedim1]

Guys?

[Dy7SLyTq]

you are treating active as a variable instead of a function. where you use active you need to instead write active(the stuff you need to pass to it)

[Nedim1]

So now it tells me Error type name is not allowed, on the Obj, and an Error expected a ')' on the obj, so what should I do now?

Here is my code:

#include <SFML/Graphics.hpp>
#include <SFML/Window.hpp>
#include <SFML/OpenGL.hpp>

class BOX
{
public:
int x, y, w, h;
};

class Obj
{
public:
BOX box;
};

bool active(Obj obj, int mx, int my)
{
    if(mx > obj.box.x && mx < obj.box.x + obj.box.w && my > obj.box.y && my < obj.box.y + obj.box.h)
    {
        return true;
    }

    return false;
}

int main()
{	
	sf::RenderWindow window, window2, window3;
		window.create(sf::VideoMode(800, 600),"My first Visual Studio window!");
	
	sf::Texture texture;
	if(!texture.loadFromFile("button1.png"))
	{
		return 1;
	}
	sf::Sprite sprite;
	sprite.setTexture(texture);

	while(window.isOpen())
	{
		sf::Event event;
		
		while(window.pollEvent(event))
		{
			if(event.type == sf::Event::Closed)
				window.close();			
		
			if(active(Obj obj, int mx, int my) == true && event.MouseButtonReleased == sf::Mouse::Right) // the error is on this line
			{
				sf::Window window;
					window.create(sf::VideoMode(400, 200),"The button worked!");

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

			}
					}}

			if(sf::Keyboard::isKeyPressed(sf::Keyboard::N))
			{
				 window2.create(sf::VideoMode(400, 200),"Another window!");
			while(window2.isOpen())
			{
				sf::Event event;
				while(window2.pollEvent(event))
				{
					if(sf::Keyboard::isKeyPressed(sf::Keyboard::C))
						{
							window2.close();
					}
				}
			}
			}
			if(sf::Keyboard::isKeyPressed(sf::Keyboard::B))
			{
				window3.create(sf::VideoMode(500, 300),"The third window!");	
				while(window3.isOpen())
					{
						sf::Event event;

						while(window3.pollEvent(event))
							if(sf::Keyboard::isKeyPressed(sf::Keyboard::C))
							{
								window3.close();
							}
					}
			 }
		
		}
		
			
		
		
		window.clear(sf::Color::Black);

		sprite.setPosition(sf::Vector2f(50, 300));
		
		window.draw(sprite);
		
		window.display();

	}
	
return 0;
}

Thanks!

[Nedim1]

Guys?

[zhongcheng]

1. Keep track of where you drew the images at
2. Handle mouse-moved events and check if the mouse coords are over the image

[Mats]

I haven't done any SFML, but this is what I do with 2D games.

-Create a tiny sprite which keeps locked to mouse co-ordinates
-Check for collisions of other sprites with that sprite.

Like I said, I have not done SFML, but that info might help you?

[Nedim1]

Ok but what about the errors?
Error type name is not allowed, on the Obj, and an Error expected a ')' on the obj.I commented the line where the errors occur.Thanks!

[Zhuge]

On line 49, you are not calling the function properly.
See:
http://www.cplusplus.com/doc/tutorial/functions/
for details on how functions work.

[giblit]

I don't even see him declaring the object anywhere..

Also you should be using a sf::Rect or sf::IntRect for the x , y , w , h.

http://www.sfml-dev.org/documentation/2.1/classsf_1_1Rect.php
http://www.sfml-dev.org/documentation/2.1/classsf_1_1Rect.php


Or even use the methods in the sf::Sprite class..

local/global bounds and/or getposition or even get texture rect.
http://www.sfml-dev.org/documentation/2.1/classsf_1_1Sprite.php