Assassinbeast

Hello folks :-)

 

I just wanna ask how important it is to learn/master the basics of iostream in c++.

 

eg:

 

cin.fail

cin.good

cin.clear

cin.bad

cin.putback

cin.get

cin.getline

cin.eof 

 

and all that bullshit.

 

for me, its kinda hard to remember because i never use it when i make games, and i never use it when i test my own code (only cout and cin), but sometimes when i read books, they use it. So its getting  hard and frustrating to remember how the iostream is made and when the states are set.

Hello 

 

I just learned templates, and i know quite abit right now.

 

So i just wanted to ask if there is any situation where you want to make your own class template. Becasue vectors already exist, and i cant really imagine when you should even need to define your own class templates.

 

But i know defining your own function templates are very useful in alot of kinds situations

Hello.

 

I just made my small gameengine in c++ with sfml, where i have made menus, butttons, gamestates and such.

There are a lot of different files, and some images.

 

So i how do i reuse it when i have to make a new game?

Should i just copy the header files,cpp files, image folders etc into my new project?

If so, that would be tedious like to link every project with sfml... 

 

Btw, I am using microsoft visual studio express 2010.

Hey, i just need some information on how to check collision if theres 1000 objects on the field.
And all 1000 objects are enemies to eachother.

So, do i for example have to make two for loops like this?:

[source lang="cpp"]for(int i = 0; i < objects.size(); ++i) //objects.size is the size of the vector(if i use that) for(int j = 0; j < objects.size(); ++i) collision(objects[i], objects[j]);[/source]
But thats 1000x1000 = a million loops in a single statement

So, i just want to know if thats how you do it... cant see any other way of doing this so far

Hey guys.

How do i load from files in the documents folder on any computer?
I am making a game that have a highscore.txt file.

So far, how i load and save the highscore.txt file is kinda this way.

[source lang="cpp"]int score = 0;int highscore = 0;std::ifstream inputfile;inputfile.open("highscore.txt");inputfile >> highscore;inputfile.close();/*Play the game (gameloop)*/if(score > highscore){ std::ofstream outputfile("highscore.txt"); outputfile << score; outputfile.close();}[/source]

But the problem is when i make an installer for my game, then i have to put the highscore.txt file in another folder (e.g my documents folder) than my original folder where all the images, dlls are. Otherwise i cant save my new highscore (only load) because the c: drive is protected and windows wont allow to edit it.

Ive tried to write something like this:

[source lang="cpp"]inputfile.open("C:\\Users\\Danny\\Documents\\highscore.txt");[/source]
It works, but "Danny" is my name and is of course not the same name as other peoples computers.

So what kind of code should i use/write to make it able to load and save in the highscore.txt file on the documentsfolder on any computer?
If u can help me (and if its gonna be a hard task), please, cut it in paper for me (post the code ), because im a big noob when it comes to new libraries or low-level programming or anything like that

Thanks alot!!!