quick question about oop

[even821]

i just want to confirm that i have understood the basics of it.
is this correct:

say i make a class for friendly NPC's in a game, i would make a class called for example Friendly {} wich would contian all the different things the npc's could do,like one for AI, and the attributes for the NPC's would be stored in a private acces spesiefier.
then i would have a constructor that gave the variables data.
then i would create objects for that class, for example old man, in my main function or somewhere else in my code?

[viliml]

Where ever you want! You can make objects right after you define the class, before the ';' mark after the last '}', or in main, exactly when you want it. You choose!

[MrHutch]

Yeah, sort of. There's no 'right' way to do things, just different ways of practicing OOP principles.

If it's game development, inheritance is your friend too. For example, say you make a class for a man, a dog and a tree. They may all do different things but, chances are, all of their draw functions will be the same; either drawing a model or sprite to the screen. So it seems silly to have a Draw() function for each of them. You could create a base class called GameObject, which has the Draw() function. Then all other objects could inherit from that class. It makes things like drawing objects much easier:

// Without inheritance
Man theMan;
Dog theDog;
Tree theTree;

// When it comes to drawing
theMan.Draw();
theDog.Draw();
theTree.Draw();

// Using inheritance
const int MAX_OBJECTS = 1000;
GameObject* theObjects[MAX_OBJECTS];

// You could point to a specific type like this
theObjects[0] = new Man;  // Providing 'Man' has inherited from GameObject

for(int i=0; i < MAX_OBJECTS; i++)
{
   theObjects[i]->Draw();   // This can draw men, dog, trees, anything.
}

The level of complexity in your game really determines how you'd structure things but, as I said, there's not one right way to do things.

[even821]

so the way i said was more or less correct then?
btw bad wording i guess, cause i never intended to ask where to put the object, i just explained how i would do things, to see if i had understood it.

so i kinda failed by placing a question mark at the end :/ sorry bout that. but thanks :D