lride

class A{   
void say(){std::cout<<"hi";}
};
 
int main()
{
    A * a=nullptr;
    a->say();   //no crash, works fine
}
 

Is this undefined behavior?

class A{...};

int main()
{
	std::vector<A*> vec;
	vec.resize(10);
	std::cout<<(vec[9]==nullptr); //prints 1
}







 

 

I want to make sure this happens on every system.

Are pointers initialized to nullptr?

Git is really simple to use once you learn it.

I liked this tutorial http://www.youtube.com/watch?v=mYjZtU1-u9Y

To me your way should work because even though the animation stops when the up key is released, it should start again because the left key is being pressed.

But this is how I implemented SFML animation in my project

It's simple. Don't start the animation only if(sf::Event::keyIsPressed).   Start the animation always even though the key is not pressed and stop it later if key is not pressed

Below code is in the main loop

 

        animation.start(); //Just start the animation
        if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left))
           ....
        else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Up))
             ....
        else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
               .....
        else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Down))
                 .....
        else
            animation.stop(); //   -Stop the animation when keys are not pressed

 

        ....

        animation.update(dt); //   -Animation only gets updated when the animation has not been stopped

The program will look for the file in the executable's directory.

You can't really make your level files invisible, but you can hide them by packing all your level files in a "level" folder and placing the folder in your executable's directory.

Then you can load the levels like

 

loadLevel("level/level1.txt");

loadLevel("level/level2.txt");

But still on basics

If you are still on basics, you can't make a game.
Learn the language first.

You can just make a std::array of std::arrays. Ex: std::array<std::array<int, 5>, 10>.

5 is the row and 10 is the column?
So I can access each element by
array[row][column]?

Cracking the Coding Interview is a good book

I am a noob here. So I have a noobish question. I just received a downvote for this post. Is there a reason for this, and something I can avoid in the future? Because I don't like offending people or posting inappropriate content.

+1 to compensate for that downvote.
It is an obvious fact that new is slow, so someone could've thought your question was ridiculous especially when you caught attention of people by capitalizing SLOW!

Never mind, I found a solution

Put std::cin.get() (maybe one more) at the end of your program to pause.

What's the big o notation for push() and pop() in priority_queue with vector or deque as its underlying container.
I can't find this anywhere.
I'm guessing linear complexity at worst for push() because it has to search for right place to insert.

Look at this one - OpenGL SuperBible. It's brilliant. I'm reading it now and I like it so much.

Be careful about this book. This book teaches OpenGL wrapper library, not the actual OpenGL itself.
I'm waiting for this book to come out in next February

You will need a lot of time and patience, but after a 5+ years, you should be able to program almost everything you wish (but be aware that the time needed to do it will still be in years).

5+ years, That's ridiculous. I started programming not much older than him and I picked up C++ in a year, a year later I was writing full blown 3d games in C++. My advice is skip C# and spend a while getting to know C++ and you should be able to program almost anything in 2+ years if you work hard.

I totally agree with this. I'm a HS sophomore and taught myself the whole C++ and made my first game over the last summer.

I have the following code in my project

[source lang="cpp"]Entity::handleMessage(Message* msg){  if(msg->type==DIE)     entityManager.destroy(this->ID);...}[/source]
I figured this is equivalent to

[source lang="cpp"]Entity::handleMessage(Message* msg){  if(msg->type==DIE) delete this;...}[/source]

Is this safe?