Messages

1

General / KeyPressed not working but KeyReleased is

« on: April 29, 2010, 11:06:10 am »

Code: [Select]

     while (app->GetEvent(ev))
      {
      }You have to put the event reactions inside the while loop, otherwise you handle only the last event of each frame.

ty.

2

General / KeyPressed not working but KeyReleased is

« on: April 28, 2010, 07:18:31 pm »

In my program KeyPressed (start holding a key) is not working but KeyReleased (release the key) is. I've done similar things before and I'm sure this is supposed to work. Here is the relevant part of the code.

Code: [Select]

...
while (app->IsOpened())
{
...
sf::Event ev;
...
if (ev.Type == sf::Event::KeyPressed)
{
if (ev.Key.Code == sf::Key::W)
{
exit(0); // not working
}
}
if (ev.Type == sf::Event::KeyReleased)
{
if (ev.Key.Code == sf::Key::W)
{
exit(0); // working
}
}
...
}
...


Here is the while thing.

Code: [Select]

#include <iostream>
#include <windows.h>
#include <time.h>
#include "SFML\Graphics.hpp"
#include "SFML\Window.hpp"

sf::Window* openGL_setup()
{
// Set color and depth clear value
glClearDepth(1.f);
glClearColor(0.f, 0.f, 0.f, 0.f);

// Enable Z-buffer read and write
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_TRUE);

// Setup a perspective projection
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(90.f, 1.f, 1.f, 500.f);

sf::WindowSettings window_settings;
window_settings.DepthBits = 24;
window_settings.StencilBits = 8;
window_settings.AntialiasingLevel = 0;

return new sf::Window(sf::VideoMode(1200, 800, 32), "", sf::Style::Close, window_settings);
}

void per_frame_openGL_setup()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}

void main()
{
sf::Window* app = openGL_setup();

// framerate
double target_seconds_per_frame = 0.02; // or "... = 1 / fps"
double frame_start_time;

while (app->IsOpened())
{
frame_start_time = clock();
sf::Event ev;
while (app->GetEvent(ev))
{
}
if (ev.Type == sf::Event::Resized)
{
glViewport(0, 0, ev.Size.Width, ev.Size.Height);
}
if (ev.Type == sf::Event::Closed)
{
app->Close();
}
if (ev.Type == sf::Event::KeyPressed)
{
if (ev.Key.Code == sf::Key::W)
{
exit(0); // not working
}
}
if (ev.Type == sf::Event::KeyReleased)
{
if (ev.Key.Code == sf::Key::W)
{
exit(0); // working
}
}
app->SetActive();
per_frame_openGL_setup();
// replace this line with drawing stuff
app->Display();
// framerate
double seconds_for_last_frame = (clock() - frame_start_time) / CLOCKS_PER_SEC;
double sleep_time_for_frame_in_seconds = target_seconds_per_frame - seconds_for_last_frame;
if (sleep_time_for_frame_in_seconds < 0)
{
sleep_time_for_frame_in_seconds = 0;
}
Sleep(sleep_time_for_frame_in_seconds * 1000);
}
}