Messages

1

Graphics / Re: strange and sharp object movement, due to SetFramerateLimit

« on: March 04, 2015, 06:54:36 pm »

See the previous article (that's also linked from the one we pointed you at): http://gafferongames.com/game-physics/integration-basics/

oh, thanks, that answered many of my questions

2

Graphics / Re: strange and sharp object movement, due to SetFramerateLimit

« on: March 04, 2015, 06:30:34 pm »

thanks guys, btw, what is

integrate( state, t, deltaTime );

in that code ?

3

Graphics / strange and sharp object movement, due to SetFramerateLimit

« on: March 04, 2015, 06:08:41 pm »

Hello guys, I have a problem, as I know, SetFramerateLimit calls Sleep() to keep game framerate probably constant, but here's the problem, when I use

int main() {
RenderWindow Window(VideoMode(1024,768), "Window");
Window.setFramerateLimit(60);

RectangleShape rs;
rs.setSize(Vector2f(50,50));
rs.setPosition(0,0);

while(Window.isOpen()) {
rs.move(5,0);
Window.draw(rs);
Window.display();
Window.clear();
}
return 0;
}
 

that rectangle is moving very sharply every random frame and it can also move a bit back, or a bit forward, I don't know how to fix this :c

4

Graphics / Re: Loading a file from a folder in the current directory.

« on: February 15, 2015, 09:28:56 pm »

Note that '/' works as a path seperator on both Windows and Unix and does not need to be escaped as "\\"...

works too, but there's no sense in this, because this code is windows-only, he'll need to search another piece of code for another OS 
btw, that's strange, but on Visual Studio 12 thing like "./myImg.png" doesn't work, just tested this

5

Graphics / Re: Loading a file from a folder in the current directory.

« on: February 15, 2015, 09:23:39 pm »

On windows, you can use this

#include <windows.h>

string getPath() {
    char buffer[MAX_PATH];
    GetModuleFileName( NULL, buffer, MAX_PATH );
    string::size_type pos = string( buffer ).find_last_of( "\\/" );
    return string( buffer ).substr( 0, pos);
}
 

then write

Image img;
img.loadFromFile(getPath() + "\\myImg.png");
 

6

Graphics / Re: How to draw a button2 by clicking on button1?

« on: February 15, 2015, 09:18:12 pm »

I think, you should replace
leftclick = true;
to
leftclick = !leftclick;
or
leftclick ^= true;

and move these variables from the cycle, because it's recursive, leftclick and rect1clicked will be false each frame, move them to the beginning of the main()
like :

 
int main() {
  bool leftclick = false;
  bool rect1clicked = false;

   sf::RenderWindow mMainWindow(sf::VideoMode(400, 400), "Window");
   mMainWindow.setFramerateLimit(40);

//all other code
 

7

General / Re: CPU core loaded to 100% when sfml app is launched

« on: February 08, 2015, 08:45:14 pm »

thanks for help, it now uses 1 - 2% of cpu :3

8

General / CPU core loaded to 100% when sfml app is launched

« on: February 08, 2015, 08:21:46 pm »

hello there guys, I have a problem, when I'm compiling that "test" code for sfml, I see that one of my core immediately become loaded from 1 - 3% to 80 - 100% and that's kinda strange, isn't that too much for an sfml or maybe that's my hardware issue ? Haven't tested this on other computers, here are screenshots :

9

General / Re: AW: NetBeans problem

« on: January 11, 2015, 04:25:25 pm »

What MinGW file did you download and install?
What exact SFML package did you download?

this is MinGW file which I downloaded and installedhttp://www.mingw.org/
and this is the SFML package which I downloaded

10

General / NetBeans problem

« on: January 11, 2015, 04:06:12 am »

Hello guys, I have a problem with setting up SFML and NetBeans with minGW compiler. Looks like I connected all correctly, I'm using SFML 2.2 build for MinGW - 32bit





I'm trying to compile this simple code :

#include <SFML/Graphics.hpp>
 
int main()
{
    sf::RenderWindow window(sf::VideoMode(200, 200), "SFML works!");
    sf::CircleShape shape(100.f);
    shape.setFillColor(sf::Color::Green);
 
    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }
 
        window.clear();
        window.draw(shape);
        window.display();
    }
 
    return 0;
}

and I get this error

"/C/MinGW/msys/1.0/bin/make.exe" -f nbproject/Makefile-Release.mk QMAKE= SUBPROJECTS= .build-conf
make.exe[1]: Entering directory `/d/NetBeansProj/SFML_ENGINE'
"/C/MinGW/msys/1.0/bin/make.exe"  -f nbproject/Makefile-Release.mk dist/Release/MinGW-Windows/sfml_engine.exe
make.exe[2]: Entering directory `/d/NetBeansProj/SFML_ENGINE'
mkdir -p build/Release/MinGW-Windows
rm -f "build/Release/MinGW-Windows/main.o.d"
g++    -c -O2 -DSFML_STATIC -I../../SFML-2.2/include -std=c++11 -MMD -MP -MF "build/Release/MinGW-Windows/main.o.d" -o build/Release/MinGW-Windows/main.o main.cpp
In file included from c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\cmath:44:0,
                 from c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\random:38,
                 from c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\bits\stl_algo.h:65,
                 from c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\algorithm:62,
                 from ../../SFML-2.2/include/SFML/System/Utf.hpp:32,
                 from ../../SFML-2.2/include/SFML/System/String.hpp:32,
                 from ../../SFML-2.2/include/SFML/System.hpp:39,
                 from ../../SFML-2.2/include/SFML/Window.hpp:32,
                 from ../../SFML-2.2/include/SFML/Graphics.hpp:32,
                 from main.cpp:1:
c:\mingw\include\math.h: In function 'float hypotf(float, float)':
c:\mingw\include\math.h:635:30: error: '_hypot' was not declared in this scope
 { return (float)(_hypot (x, y)); }
                              ^
make.exe[2]: *** [build/Release/MinGW-Windows/main.o] Error 1
make.exe[2]: Leaving directory `/d/NetBeansProj/SFML_ENGINE'
make.exe[1]: *** [.build-conf] Error 2
make.exe[1]: Leaving directory `/d/NetBeansProj/SFML_ENGINE'
make.exe": *** [.build-impl] Error 2
 
BUILD FAILED (exit value 2, total time: 1s)

tried reinstalling minGW twice and tried googling, but no result, that's why I'm here

11

Graphics / Re: Problem with collision on Resizing

« on: December 23, 2014, 12:06:38 pm »

Sounds like you're not converting the co-ordinates from actual pixel co-ordinates (the mouse position) to the world co-ordinates (the positions of the graphics in the view).
This should solve your problem:
http://www.sfml-dev.org/tutorials/2.2/graphics-view.php#coordinates-conversions

Thanks dude, I'll give you a cookie, works now

12

Graphics / Re: Problem with collision on Resizing

« on: December 23, 2014, 01:03:52 am »

GUI.cpp code

Vector2f GUI::mousePosition(RenderWindow& _window){
        Vector2f pos(Mouse::getPosition(_window));
        return pos;
}

void GUI::CreateButton(Vector2f position, Vector2f size, String text, Texture buttonIMG[3])
{
                buttonSettings rect; // creating button

                rect.buttonIMG = buttonIMG[0];
                rect.buttonGUIDANCE = buttonIMG[1];
                rect.buttonCLICK = buttonIMG[2];

                rect.btns.setSize(size);
                rect.btnText.setFont(font);
                rect.btnText.setCharacterSize(16);
                rect.btnText.setColor(Color(200,200,200));
                rect.btnText.setString(text);
                rect.btnText.setPosition(rect.btns.getPosition().x + (rect.btns.getSize().x/2 - rect.btns.getSize().x/5) , rect.btns.getPosition().y + (rect.btns.getSize().y/3)); // setting text in the middle
                buttons.push_back(rect);
}
 
int GUI::OnButtonClick(RenderWindow& _window) {
        for(btnID = 0; btnID != buttons.size(); btnID++) {
                        FloatRect bounds(buttons[btnID].btns.getGlobalBounds());

                if(bounds.contains(mousePosition(_window)) && event.type == Event::MouseButtonPressed) {
                        if(event.mouseButton.button == Mouse::Left) {
                                                        buttons[btnID].btns.setTexture(&buttons[btnID].buttonCLICK); // on button click
                                return btnID;
                        }
                }
                                if(bounds.contains(mousePosition(_window))) { // on button guidance
                                        buttons[btnID].btns.setTexture(&buttons[btnID].buttonGUIDANCE);
                                }
                                else {
                                  buttons[btnID].btns.setTexture(&buttons[btnID].buttonIMG); // button idle
                                }

        }
}

GUI.h

typedef struct buttonSettings {
        Text btnText;
                RectangleShape btns;
                Vector2f size;
                Texture buttonIMG, buttonGUIDANCE, buttonCLICK;
        };

vector<buttonSettings> buttons;
 

main.cpp

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

using namespace std;
using namespace sf;

Texture img[3];

string getPath()
{
  char result[ MAX_PATH ];
  return string( result, GetCurrentDirectory(100, result));
}

int main() {
        RenderWindow window(VideoMode(1024,768), "game"); // window initialisation
        window.clear();

        for(unsigned short i = 0; i<3; i++) {
                img[i].loadFromFile(getPath() + "\\GUI\\BUTTON\\BUTTON_" + to_string(i) + ".png");
        }

        gui.CreateButton(Vector2f(window.getSize().x/2, window.getSize().y/18), Vector2f(200, 70), "", img); // creating button
         window.display();

 while(window.isOpen()) {
while(window.pollEvent(Event event) {
gui.OnButtonClick(window);
}
}
}

here, all working code, but textures changes, not color and I'm resizing window manually, so all the elements are scaling

13

Graphics / Problem with collision on Resizing

« on: December 23, 2014, 12:35:18 am »

Hello guys, I have a problem, I draw some squares in my window and they change their color, when I guide my cursor over them, but when I change manually the screen size, their collision is still on the last point, where it was, when those buttons haven't been resized, so, when I guide my cursor over them, there's nothing, but when I guide my cursor on that last place, squares change their color, any ideas what can I do ?

14

Graphics / Re: GUI drawing

« on: December 11, 2014, 02:54:06 am »

It sounds like you're asking for a "scene graph."  It's out of scope for SFML, but a common element of games and game engines so once you know that phrase it's easy to google a lot of detailed help on implementing them.  I believe there's one in the SFML Game Development book too.

If you were asking for GUI elements, what Jesper said.

If I understanded correctly, I should create a Parent-child system and make GUI as a child and view as a root ?

15

Graphics / GUI drawing

« on: December 11, 2014, 12:44:10 am »

hello guys, I have a question, how can I do something like glue GUI element to a current RenderWindow or current view ? I want that GUI to be a child of a view and I don't know how to do that, maybe you can guide me to the right path ?