ENTRYPOINT void
init_fire(ModeInfo * mi)
{
firestruct *fs;
/* allocate the main fire table if needed */
if (fire == NULL) {
if ((fire = (firestruct *) calloc(MI_NUM_SCREENS(mi),
sizeof(firestruct))) == NULL)
return;
}
/* initialise the per screen fire structure */
fs = &fire[MI_SCREEN(mi)];
fs->np = MI_COUNT(mi);
fs->fog = do_fog;
fs->shadows = do_shadows;
/* initialise fire particles if any */
if ((fs->np)&&(fs->p == NULL)) {
if ((fs->p = (part *) calloc(fs->np, sizeof(part))) == NULL) {
free_fire(fs);
return;
}
}
else if (fs->r == NULL) {
/* initialise rain particles if no fire particles */
if ((fs->r = (rain *) calloc(NUMPART, sizeof(part))) == NULL) {
free_fire(fs);
return;
}
}
/* check tree number */
if (do_texture)
fs->num_trees = (num_trees<MAX_TREES)?num_trees:MAX_TREES;
else
fs->num_trees = 0;
fs->trackball = gltrackball_init ();
/* xlock GL stuff */
if ((fs->glx_context = init_GL(mi)) != NULL) {
#ifndef STANDALONE
Reshape(mi); /* xlock mode */
#else
reshape_fire(mi,MI_WIDTH(mi),MI_HEIGHT(mi)); /* xscreensaver mode */
#endif
glDrawBuffer(GL_BACK);
if (!Init(mi)) {
free_fire(fs);
return;
}
} else {
MI_CLEARWINDOW(mi);
}
}
/*
*-----------------------------------------------------------------------------
* Called by the mainline code periodically to update the display.
*-----------------------------------------------------------------------------
*/
ENTRYPOINT void draw_fire(ModeInfo * mi)
{
firestruct *fs = &fire[MI_SCREEN(mi)];
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
MI_IS_DRAWN(mi) = True;
if (!fs->glx_context)
return;
glXMakeCurrent(display, window, *(fs->glx_context));
glShadeModel(GL_FLAT);
glEnable(GL_DEPTH_TEST);
/* makes particles blend with background */
if (!MI_IS_WIREFRAME(mi)||(!fs->np))
{
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
/* fog stuff */
glEnable(GL_FOG);
glFogi(GL_FOG_MODE, GL_EXP);
glFogfv(GL_FOG_COLOR, fogcolor);
glFogf(GL_FOG_DENSITY, 0.03);
glHint(GL_FOG_HINT, GL_NICEST);
glPushMatrix();
glRotatef(current_device_rotation(), 0, 0, 1);
DrawFire(mi);
glPopMatrix();
#ifndef STANDALONE
Reshape(mi); /* xlock mode */
#else
reshape_fire(mi,MI_WIDTH(mi),MI_HEIGHT(mi)); /* xscreensaver mode */
#endif
glFinish();
glXSwapBuffers(display, window);
}
/*
*-----------------------------------------------------------------------------
* Called by the mainline code periodically to update the display.
*-----------------------------------------------------------------------------
*/
void draw_fire(ModeInfo * mi)
{
firestruct *fs = &fire[MI_SCREEN(mi)];
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
MI_IS_DRAWN(mi) = True;
if (!fs->glx_context)
return;
#ifdef WIN32
wglMakeCurrent(hdc, fs->glx_context);
#else
glXMakeCurrent(display, window, *(fs->glx_context));
#endif
DrawFire(mi);
reshape_fire(mi,MI_WIDTH(mi),MI_HEIGHT(mi));
glFinish();
glXSwapBuffers(display, window);
}
/*
*-----------------------------------------------------------------------------
* Called by the mainline code periodically to update the display.
*-----------------------------------------------------------------------------
*/
ENTRYPOINT void draw_fire(ModeInfo * mi)
{
firestruct *fs = &fire[MI_SCREEN(mi)];
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
MI_IS_DRAWN(mi) = True;
if (!fs->glx_context)
return;
glXMakeCurrent(display, window, *(fs->glx_context));
DrawFire(mi);
#ifndef STANDALONE
Reshape(mi); /* xlock mode */
#else
reshape_fire(mi,MI_WIDTH(mi),MI_HEIGHT(mi)); /* xscreensaver mode */
#endif
glFinish();
glXSwapBuffers(display, window);
}
