Simply put, FLTK does what it does much better than the builtin GUI possibilities. One can fairly easily pop FLTK windows and have them affect Irrlicht properties, as demonstrated.
- Code: Select all
#include <irrlicht.h>
#include <cstdio>
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Button.H>
using namespace irr;
using namespace core;
using namespace scene;
using namespace video;
void btn_pressed(Fl_Widget*, void *data) {
ISceneNode *ptr = (ISceneNode *) data;
vector3df pos = ptr->getPosition();
pos.Y++;
ptr->setPosition(pos);
}
int main() {
IrrlichtDevice *device =
createDevice( video::EDT_OPENGL, dimension2d<u32>(640, 480), 16,
false, false, false, 0);
if (!device)
return 1;
IVideoDriver *driver = device->getVideoDriver();
ISceneManager *smgr = device->getSceneManager();
ITimer *timer = device->getTimer();
IAnimatedMesh* mesh = smgr->getMesh("sydney.md2");
if (!mesh) {
device->drop();
return 1;
}
IAnimatedMeshSceneNode* node = smgr->addAnimatedMeshSceneNode( mesh );
if (node) {
node->setMaterialFlag(EMF_LIGHTING, false);
node->setMD2Animation(scene::EMAT_STAND);
node->setMaterialTexture( 0, driver->getTexture("sydney.png") );
}
ISceneNode *cam = smgr->addCameraSceneNode(0, vector3df(0,30,-40), vector3df(0,5,0));
int width, a;
Fl::screen_xywh(a,a,width,a);
// Yes, we could get screen width via Irrlicht too.
Fl_Window *window = new Fl_Window(width-300,0,300,180,"Edit properties");
Fl_Button *btn = new Fl_Button(20,40,260,100,"Go higher!");
btn->user_data(cam);
btn->callback(btn_pressed);
window->end();
window->show();
int fps=-1, lastfps= -1;
long long time, lasttime = timer->getTime(), timediff;
wchar_t cfps[7];
while(device->run()) {
driver->beginScene(true, true, SColor(255,100,101,140));
smgr->drawAll();
driver->endScene();
fps = driver->getFPS();
if (fps != lastfps) {
swprintf(cfps,7,L"%d",fps);
cfps[6] = L'\0';
// Why this and not stringw + whatever?
// Think of it the next time you meditate.
device->setWindowCaption(cfps);
lastfps = fps;
}
Fl::check(); // This keeps our FLTK windows interactive.
time = timer->getTime();
timediff = 16-(time-lasttime);
if (timediff > 0) device->sleep(timediff);
// Yes, this is unrelated to FLTK.
// I just prefer all my projects to be efficient.
lasttime = timer->getTime();
}
device->drop();
return 0;
}
