Messages

1

Graphics / Re: Getting a rect from a shape/implementing collision detection

« on: May 14, 2013, 11:31:15 am »

Thanks mate, that example helped quite a lot. No more escaping paddles.

I'm still confused about Rect's though, like how can I actually use it after using getGlobalBounds(). I've tried stuff like if paddle1.x or paddle1.top (at least 'top' was an attribute on a Rect) has a value that puts them out of the screen, it will be adjusted so the paddle can't exit the screen. This hasn't been working at all, as I get compile error:

error: 'class sf::RectangleShape' has no member named 'top'

Obviously it's still using Shape, so how am I able to use Rect instead?

_{(Apologies for bad text, I felt nauseous after reading it too.)}

2

Graphics / Getting a rect from a shape/implementing collision detection

« on: May 14, 2013, 10:23:31 am »

aIck here!
I finally felt ballsy enough to try and program something, and that something would be yet another Pong clone (start small they all say). I was pleasantly surprised that I was able to draw those sweet white rectangles on the screen and making them moveable with keyboard was rather easy, but now I'm struggling on collisions and such. I need to stop those paddles from escaping the screen, and later make the ball bounce off the paddles and walls.

Here's the code for a paddle:

    sf::RectangleShape paddle1;
    paddle1.setSize(sf::Vector2f(20, 100));
    paddle1.setFillColor(Color::White);
    paddle1.setPosition(20, 150);
    paddle1.getGlobalBounds();

I figured getGlobalBounds() could be the way to go, but I don't quite know how to advance from here. Any help? Suggestions? Corrections?

I'm using SFML2 if that matters.