Messages

1

General / How to pass current instance of a window for input?

« on: January 12, 2012, 11:53:49 pm »

Ok, I just looked over your tut. on the service provider. I am going to implement that idea into my program and let you know how it goes. I do not have my tile engine up and running yet, but if all complies fine then it's a good start.

2

General / How to pass current instance of a window for input?

« on: January 12, 2012, 08:29:11 pm »

Ok, I appreciate your reply. You made several good points. I will have to keep this in mind. I'll have to review your tutorial as it seems it goes over exactly what i'm trying to accomplish.

If I understand you right this is how I could create a buffer between my code and SFML:

/////Only reason I define functions in the same file as the header is to save space////

Code: [Select]


class SFMLInput
{
private:

public:
bool IsKeyDown(sf::Input & Input, sf::Key::Code KeyCode)
{return (input.IsKeyDown(Keycode));}
//...
};

class GenInput
{
private:
//...
public:
bool IsKeyDown(Keycode keycode)
{return (SFMLInput.IsKeyDown(keycode));}
}


Is this somewhat what you're talking about? With this example it seems I would run into the problem of separating Keycodes from SFML's keycodes.  The first solution I see is to create my own enum of keycodes, but that is kind of redundant and doesn't reuse code, so probably a bad idea.

So unless I can use a reference or pointer to an enum (i've never really tried), i'm going to have to think this through further. I could use a get function to return the value of the key, so:

Code: [Select]


class SFMLInput
{
public:
//Get functions for all keys I would use
int GetKeyW() {return sf::Key::W;}
//...
};

class GenInput
{
bool IsKeyDown(int KeyCode)
{return SFMLInput.IsKeyDown(KeyCode);}

//And Could Be Used As Such///

class SomethingToDoWithSpriteMovement
{
private:
vector2 position;
GenInput genInput;
SFMLInput sfmlInput;
public:
void move() {
if (genInput.IsKeyDown(sfmlInput.GetKeyW()))
    position.x += speed;

};





If I don't get this implemented 100% I won't mind but it is good practice to try anyway.

I am more concerned with my game's architecture and class structure.

[EDIT]

I just realized I messed this up because I was not passing sf::Input to SFMLInput.IskeyDown.

So this doesn't work.  

3

General / How to pass current instance of a window for input?

« on: January 12, 2012, 06:35:06 am »

Hey all,
I'm trying to construct an input class so that my game can be cleanly separated from SFML in-case the framework changes or I change frameworks.

However, i'm having a problem figuring out how to pass the current instance of a window to another class.

I have a main game class that contains all the usual init, game loop, update, draw and cleanup functions. This class also initializes the current window.

I wrote a function that returns the current window in hopes I could use it to write my input class (since sf::input is partnered with a window instance):

Code: [Select]


sf::Window & getWindow()
 {return window;}


However, when I go to my input class I still need to write this:

Code: [Select]


Game game
sf::Input input = game.getWindow().GetInput();


Which is really awkward and actually doesn't work. I think I'm complicating this matter too much.

How can I pass an instance of a window to an input class?

I could write a function like:

Code: [Select]


bool leftKeyDown;

bool LeftKeyDown(sf::Input & input)
{
return (leftkeyDown = input.IsKeyDown(sf::Key::Left);)
}


Would this be more correct?

4

General / SFML Linker error vs 2010

« on: January 12, 2012, 06:24:21 am »

I forgot to add all of the dependencies. Here is a helpful tutorial that worked for me:

http://www.gamefromscratch.com/page/Game-From-Scratch-CPP-Edition-Part-1.aspx

5

General / SFML Linker error vs 2010

« on: January 10, 2012, 04:12:54 am »

Got it working.

6

General / SFML Linker error vs 2010

« on: January 10, 2012, 01:37:58 am »

Hey guys,
I'm trying to get SFML working on VS 2010 but i'm having problems with the compiler giving linker errors. I'm just trying to run a blank window to check everything is setup fine.

The odd thing is, if I include and run the code for the command line clock, I don't get any linker errors. However, when I try to create a blank window by including SFML/Window.hpp I am getting linker errors.

Are there any tutorials that cover SFML setup with VS 2010 that go through making a blank window?

The odd thing is, using the sf:: scope operator autocomplete recognizes the funtions that return linker errors. There must be something I did wrong with the project setup or files.

Any ideas?

Here is the code too:

Code: [Select]


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

int main()
{
sf::RenderWindow Game(sf::VideoMode(800, 600, 32), "SFML");

sf::Event Event;

while(Game.IsOpened())
{
while(Game.GetEvent(Event))
{
if(Event.Type == sf::Event::Closed)
Game.Close();
}

Game.Clear();

Game.Display();
}

return EXIT_SUCCESS;
}