how to create a "loading level" sequence

[Janther]

I posted this topic in the Tutorial Request Section but since i haven`t got any luck ill try here since its also about development:

Im pretty much done with the first beta of my proyect and to finish some details could anyone show me where to find a tutorial to show loading sequence while loading the game and levels since now i just show the CS output.

like the game Worms that shows a cake bieng eaten or just a loading bar.

[Janther]

after a few investigations i discovered the iProgressMeter class but i dont get how to actually use it and also in this topic http://www.crystalspace3d.org/forum/index.php/topic,419.0.html it says that displaying an image, it would remain through the loading proses.

here is my code for the last option:

Code:

engine->DeleteAll();
vfs->ChDir (mapname);
g2d = g3d->GetDriver2D ();

csRef<iTextureManager> txtmgr = g3d->GetTextureManager ();
csRef<iDataBuffer> buf = vfs->ReadFile ("water.jpg");
csRef<iImage> ifile = imgldr->Load (buf, txtmgr->GetTextureFormat ());
csRef<iTextureHandle> txt = txtmgr->RegisterTexture (ifile, CS_TEXTURE_2D);
img_name = new csSimplePixmap (txt);
img_name->DrawScaled(g3d, 0, 0, g2d->GetWidth(), g2d->GetHeight());

if (!loader->LoadMapFile ("world")) return false;
engine->Prepare();

but i dont see any changes. Am i loading it right? am i suposed to use another image tipe?

any help on how to use the progressmeter or the image would be thanked

[Vincent]

Hello,

  Here's a bit of code from Ecksdee, which used to just clear the screen and write "Loading...":
(you can see the whole file here)

Code:

    iObjectRegistry* obj_reg = bl->GetApplication ()->GetObjectRegistry ();
    csRef<iGraphics3D> g3d = csQueryRegistry<iGraphics3D> (obj_reg);
    iGraphics2D* g2d = g3d->GetDriver2D ();
    if (g2d)
    {
      iFontServer* fs = g2d->GetFontServer ();
      csRef<iFont> font = fs->LoadFont ("/xd/data/fonts/menu/f500.ttf", 30.0f);
      csString text ("Loading...");
      int text_width, text_height;
      font->GetDimensions (text.GetData (), text_width, text_height);
      int width = g2d->GetWidth ();
      int height = g2d->GetHeight ();
      g2d->BeginDraw ();
      g2d->ClearAll (g2d->FindRGB (0, 0, 0));
      g2d->Write (font, (int)(width/2 - text_width/2),
            (int)(height/2 - text_height/2), g2d->FindRGB (255, 255, 255), -1,
            text.GetData ());
      g2d->FinishDraw ();
      g2d->Print (0);

For drawing an image (csPixmap), you could look at walktest code (search for cslogo).
Apparently, you're missing some g3d->BeginDraw(CSDRAW_2DGRAPHICS) call (possibly need to use previous draw flags too),
then after you called draw for your pixmap, call g3d->FinishDraw() and g3d->Print(0).

As for iProgressMeter, see for example cslight source code (in CS/apps/tools/cslight/).
The thing is to pass the progress meter as a parameter to engine->Prepare(myProgressMeter).