Topics

1

SFML projects / Immortui - 2D top down zombie puzzle/shooter game

« on: June 29, 2013, 03:09:05 pm »

I've been working with SFML to create this zombie puzzler on and off for a few months, and it's now been released on Desura!

I was working with an SFML 2 RC and TGUI to create this game, so as I neared the ending I tried to upgrade to the latest SFML and TGUI with success. Unfortunately I did not manage to port to linux or Mac. My lack of any experience with linux made compiling it extremely difficult for me, and once I had finally worked out how to use linux and its compilers, my code would compile but not run from some memory error. I did not port to mac because the mac I was going to compile everything on actually (physically) broke the day before I was going to!

If you are interested, check out the game's site. As I mentioned the game is on Desura and this site has a link to the Desura purchasing.
http://immortui.hogpog.co.uk

2

Graphics / Sizing RenderTexture resizes graphics

« on: October 29, 2012, 02:51:57 pm »

As I am using multiple views of the same screen I am drawing to a RenderTexture, which I then draw to the RenderWindow. At the beginning of my program the RenderTexture is created to twice the size of the window. I was expecting my rendering area to be increased (e.g. so the size of  the window was 600x600 but I could render to this texture at (800,800) ), but instead when I draw all my graphics were scaled up - so my 32x32 sprites became 64x64, and the positions were scaled - creating the RenderTexture double the size just stretched it.

Here is what I'm doing each rendering frame (in pseudocode):
rendertexture.clear()
window.clear()
rendertexture.setView(view)
rendertexture.draw(all)
rendertexture.display()
window.draw(rendertexture)
window.setView(minimap)
window.draw(rendertexture)
window.display()

I'm trying to have the minimap display the same screen as the main view except the area that is shows is double the size. If the RenderTexture didn't stretch I would be able to do this (SFML 2, but not the most up to date version).

3

Graphics / Drawing darkness around player

« on: October 15, 2012, 09:58:25 pm »

I have read a thread about this: http://en.sfml-dev.org/forums/index.php?topic=9320.0 but, even after looking at the example, I am unable to add this into my game.

I want a circle of just transparency - no white borders, or any pretty effects - to follow the player. The darkness layer will not always be present, as it needs to slowly fade in/out, so the rectangle which the circle is drawn on needs to be black and the same opacity as the darkness layer.

Here is what I have so far:

//class Darkness
sf::RenderTexture m_Layer;
        sf::RenderTexture m_lighttexture;
        sf::Sprite m_Sprite;
        sf::Sprite m_light;

/////
m_Layer.create(view->getSize().x,view->getSize().y);
        init_light();

void Darkness::init_light(){
        m_lighttexture.create(100,100);

        m_lighttexture.clear();

        sf::CircleShape temp(50);
        temp.setOrigin(50,50);
        temp.setFillColor(sf::Color(255,255,255,0));
        temp.setPosition(sf::Vector2f(50.f, 50.f));
        m_lighttexture.draw(temp, sf::BlendNone);

        m_light.setTexture(m_lighttexture.getTexture(),true);
        m_light.setOrigin(50,50);
}

and

void Darkness::render(){
        m_Layer.clear(sf::Color(0,0,0,opacity));
        if(displaylight){
                m_Layer.draw(m_light,sf::BlendNone);
        }
        m_Layer.display();

        m_Sprite.setTexture(m_Layer.getTexture());
        Game::window->draw(m_Sprite);
}

What happens is there is a black rectangle on top of the player at all times - not transparent.

4

Feature requests / Vector2- divide operator

« on: August 20, 2012, 03:07:22 pm »

I'm sure this has to have been mentioned before, but I have not been able to find anything mentioning it using the forum's search or google.

Why doesn't sf::Vector2 (I've only been using sf::Vector2f but I assume the problem is with the other types as well) have a divide operator? It seems like an obvious feature to have.

5

System / SFML 2 clock returning incorrectly when run in certain situations

« on: April 24, 2012, 08:24:00 pm »

I'm using SFML 2.0, but NOT the newest version of it. GetFrameTime() exists and GetElapsedTime() returns an sf::Uint32.

Here is the code:

Code: [Select]

void AppStateManager::start(AppState* state){
changeAppState(state);
double frameTime = 1;
int startTime = 0;
while(!m_bShutdown){
sf::Clock clock;
if(!SfmlFramework::Singleton()->window->IsOpened())m_bShutdown = true;
SfmlFramework::Singleton()->window->Clear();


//capture input and handle application-wide events
sf::Event evt;
while(SfmlFramework::Singleton()->window->PollEvent(evt)){
switch(evt.Type){
case sf::Event::KeyPressed:
m_ActiveStateStack.back()->keyPressed(evt.Key.Code);
break;
case sf::Event::KeyReleased:
m_ActiveStateStack.back()->keyReleased(evt.Key.Code);
break;
case sf::Event::MouseMoved:
m_ActiveStateStack.back()->mouseMoved(sf::Vector2f(evt.MouseMove.X,evt.MouseMove.Y));
break;
case sf::Event::MouseButtonPressed:
m_ActiveStateStack.back()->mousePressed(evt.MouseButton.Button);
break;
case sf::Event::MouseButtonReleased:
m_ActiveStateStack.back()->mouseReleased(evt.MouseButton.Button);
break;
case sf::Event::Closed:
m_bShutdown = true;
break;
default:
break;
}
}
if(!m_bShutdown)
m_ActiveStateStack.back()->update(frameTime);

frameTime = clock.GetElapsedTime();
clock.Reset();
std::cout << frameTime << std::endl;

SfmlFramework::Singleton()->window->Display();
}

SfmlFramework::Singleton()->window->Close();

}
When run in visual c++ 2010, it outputs correctly - 2 2 2 2 2 2 2 2 2. When run on SOME computers standalone, it also runs correctly. However, on some other computers - mine included - when run standalone it outputs 0 for a while then outputs something close to 15. This is obviously causing a massive problem with my game as a lot of people are experiencing an issue where the movement is incorrect.

How can I fix this?

6

General / SFML 2.0 randomiser?

« on: January 28, 2012, 04:07:05 pm »

I can't find it in the documentation, is it removed?

7

Window / frameTime is always 0

« on: January 18, 2012, 05:04:11 pm »

The frametime is always 0 and I cannot understand why.

I am using sfml 2.0.

Code: [Select]

while(!m_bShutdown){
if(!SfmlFramework::Singleton()->window->IsOpened())m_bShutdown = true;



//capture input and handle application-wide events
sf::Event evt;
while(SfmlFramework::Singleton()->window->PollEvent(evt)){
switch(evt.Type){
case sf::Event::KeyPressed:
m_ActiveStateStack.back()->keyPressed(evt.Key.Code);
break;
case sf::Event::KeyReleased:
m_ActiveStateStack.back()->keyReleased(evt.Key.Code);
break;
case sf::Event::MouseMoved:
m_ActiveStateStack.back()->mouseMoved(sf::Vector2f(evt.MouseMove.X,evt.MouseMove.Y));
break;
case sf::Event::MouseButtonPressed:
m_ActiveStateStack.back()->mousePressed(evt.MouseButton.Button);
break;
case sf::Event::MouseButtonReleased:
m_ActiveStateStack.back()->mouseReleased(evt.MouseButton.Button);
break;
case sf::Event::Closed:
m_bShutdown = true;
break;
default:
break;
}
}
std::cout << "AppStateManager update " << frameTime << std::endl;
m_ActiveStateStack.back()->update(frameTime);

frameTime = SfmlFramework::Singleton()->window->GetFrameTime();
}


8

General / Mini-framework AppState rendering problem

« on: January 09, 2012, 08:07:53 pm »

I made a mini framework for sfml, based off a framework for a 3d rendering engine I have used. It uses "AppStates", which the program is constantly in one - for example, MenuState, GameState. These render a screen whenever one is entered.

In the rendering engine I used this came from, there were SceneManagers to organize the scenes and hold the data rendered in that SceneManager, including a camera which the 'viewport' would be set to. I am new to sfml and not familiar with the various features - is there anything like a SceneManager I could use to achieve the same affect, or would I have to create my own? (I'm assuming 'views' in SFML can be used to the same affect as the viewports - I haven't looked through that part much, please correct me if I am wrong).

Thanks in advance!

9

General / SFML 2.0 PostFX?

« on: December 29, 2011, 10:18:59 pm »

I am following the 1.6 tutorials using the 2.0 version of SFML, and I'm trying to use shaders. Instead of sf::PostFX which isn't there, I thought sf::Shader is the equivalent. Furthermore, I tried using the sf::Shader::SetTexture, which not only does not accept 'NULL' as its second argument so I don't know how to tell it to use the contents of the screen but half the functions in sf::Shader that are listed by visual studio don't seem to be in the documentation. sf::Shader::SetTexture isn't.

How can use the equivalent of postfx in 2.0?

10

General / OpenGL with SFML (dumb question)

« on: December 22, 2011, 07:24:11 pm »

dumb question: do I have to download something extra to use OpenGL with SFML? I try to use OpenGL code like

Code: [Select]

glClearDepth(1.f);

in my project following 1.6 tutorials with 2.0 but I just get 'identifier is undefined'

11

General / SFML 2.0 GetInput()

« on: December 22, 2011, 06:36:57 pm »

What should I use instead? I know sf::input got replaced by sf::Keyboard and sf::Mouse, but I cannot find any function like GetInput() in the documentation under Window. I'm trying to achieve something like this in the 1.6 tutorial:

Code: [Select]

// Get some useless input states, just to illustrate the tutorial
        bool         LeftKeyDown     = Input.IsKeyDown(sf::Key::Left);
        bool         RightButtonDown = Input.IsMouseButtonDown(sf::Mouse::Right);
        bool         JoyButton1Down  = Input.IsJoystickButtonDown(0, 1);
        unsigned int MouseX          = Input.GetMouseX();
        unsigned int MouseY          = Input.GetMouseY();
        int          JoystickX       = Input.GetJoystickAxis(1, sf::Joy::AxisZ);
        int          JoystickY       = Input.GetJoystickAxis(1, sf::Joy::AxisY);
        int          JoystickPOV     = Input.GetJoystickAxis(1, sf::Joy::AxisPOV);

12

General / [VC++10] The application failed to start/linker errors

« on: December 20, 2011, 01:02:53 pm »

I'm using visual studio 2010 express, and have build the 2.0 from source and am using the dynamic libraries. All dynamic and static libs are in VC/lib.

Additional library directories: sfml-system.lib, sfml-window.lib, sfml-graphics.lib (with -d for debug)

Building in debug:
I first get the error of
"general error c101008a: Failed to save the updated manifest to the file "Debug\SFMLTutorial.exe.embed.manifest". The parameter is incorrect."

Any more attempts to compile it and the error is:
This application has failed to start because the application configuration is incorrect.

Building in release:
I get linker errors:

Code: [Select]

1>main.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __thiscall sf::Window::Display(void)" (__imp_?Display@Window@sf@@QAEXXZ)
1>main.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall sf::Window::~Window(void)" (__imp_??1Window@sf@@UAE@XZ)
1>main.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall sf::Window::Window(class sf::VideoMode,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,unsigned int,struct sf::ContextSettings const &)" (__imp_??0Window@sf@@QAE@VVideoMode@1@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@IABUContextSettings@1@@Z)
1>main.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall sf::VideoMode::VideoMode(unsigned int,unsigned int,unsigned int)" (__imp_??0VideoMode@sf@@QAE@III@Z)
1>C:\Users\Samuel\Documents\Visual Studio 2010\Projects\SFMLTutorial\Release\SFMLTutorial.exe : fatal error LNK1120: 4 unresolved externals

Code I am using

Code: [Select]

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

int main(){
sf::Window window(sf::VideoMode(800,600,32),"SFML window");
bool running = true;
while(running){
window.Display();
}
return EXIT_SUCCESS;
}

Project was a win32 console application with the "blank project" ticked.

Hope someone can help

EDIT: I forgot to hit apply when adding the libs in release. Release works fine now, runs as normal, but debug still has the error.