Ejemplo n.º 1
0
static Bool Init(ModeInfo * mi)
{
    int i;
    firestruct *fs = &fire[MI_SCREEN(mi)];

    /* default settings */
    fs->eject_r = 0.1 + NRAND(10) * 0.03;
    fs->dt = 0.015;
    fs->eject_vy = 4;
    fs->eject_vl = 1;
    fs->ridtri = 0.1 + NRAND(10) * 0.005;
    fs->maxage = 1.0 / fs->dt;
    vinit(fs->obs, DEF_OBS[0], DEF_OBS[1], DEF_OBS[2]);
    fs->v = 0.0;
    fs->alpha = DEF_ALPHA;
    fs->beta = DEF_BETA;

    /* initialise texture stuff */
    if (do_texture)
    	inittextures(mi);
    else
    {
	fs->ttexture = (XImage*) NULL;
	fs->gtexture = (XImage*) NULL;
    }

    if (MI_IS_DEBUG(mi)) {
	(void) fprintf(stderr,
		       "%s:\n\tnum_part=%d\n\ttrees=%d\n\tfog=%s\n\tshadows=%s\n\teject_r=%.3f\n\tridtri=%.3f\n",
		       MI_NAME(mi),
		       fs->np,
		       fs->num_trees,
		       fs->fog ? "on" : "off",
		       fs->shadows ? "on" : "off",
		       fs->eject_r, fs->ridtri);
    }

    /* initialise particles and trees */
    for (i = 0; i < fs->np; i++) {
	setnewpart(fs, &(fs->p[i]));
    }

    if (fs->num_trees)
	if (!inittree(mi)) {
		return False;
	}

    /* if no fire particles then initialise rain particles */
    if (!fs->np)
    {
	vinit(fs->min,-7.0f,-0.2f,-7.0f);
  	vinit(fs->max,7.0f,8.0f,7.0f);
    	for (i = 0; i < NUMPART; i++) {
	    setnewrain(fs, &(fs->r[i]));
    	}
    }
    
    return True;
}
Ejemplo n.º 2
0
/* set rain particle values */
static void setpartrain(firestruct * fs, rain * r, float dt)
{
    r->age += dt;

    vadds(r->vel,dt,r->acc);
    vadds(r->pos,dt,r->vel);

    if(r->pos[0]<fs->min[0])
	r->pos[0]=fs->max[0]-(fs->min[0]-r->pos[0]);
    if(r->pos[2]<fs->min[2])
	r->pos[2]=fs->max[2]-(fs->min[2]-r->pos[2]);

    if(r->pos[0]>fs->max[0])
	r->pos[0]=fs->min[0]+(r->pos[0]-fs->max[0]);
    if(r->pos[2]>fs->max[2])
	r->pos[2]=fs->min[2]+(r->pos[2]-fs->max[2]);

    vequ(r->oldpos,r->pos);
    vadds(r->oldpos,-(r->partLength),r->vel);
    if(r->pos[1]<fs->min[1])
    	setnewrain(fs, r);
}
Ejemplo n.º 3
0
static Bool Init(ModeInfo * mi)
{
    int i;
    firestruct *fs = &fire[MI_SCREEN(mi)];

    /* default settings */
    fs->eject_r = 0.1 + NRAND(10) * 0.03;
    fs->dt = 0.015;
    fs->eject_vy = 4;
    fs->eject_vl = 1;
    fs->ridtri = 0.1 + NRAND(10) * 0.005;
    fs->maxage = 1.0 / fs->dt;
    vinit(fs->obs, DEF_OBS[0], DEF_OBS[1], DEF_OBS[2]);
    fs->v = 0.0;
    fs->alpha = DEF_ALPHA;
    fs->beta = DEF_BETA;

    /* initialise texture stuff */
    if (do_texture)
    	inittextures(mi);
    else
    {
	fs->ttexture = (XImage*) NULL;
	fs->gtexture = (XImage*) NULL;
    }

    if (MI_IS_DEBUG(mi)) {
	(void) fprintf(stderr,
		       "%s:\n\tnum_part=%d\n\ttrees=%d\n\tfog=%s\n\tshadows=%s\n\teject_r=%.3f\n\tridtri=%.3f\n",
		       MI_NAME(mi),
		       fs->np,
		       fs->num_trees,
		       fs->fog ? "on" : "off",
		       fs->shadows ? "on" : "off",
		       fs->eject_r, fs->ridtri);
    }

    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);

    /* initialise particles and trees */
    for (i = 0; i < fs->np; i++) {
	setnewpart(fs, &(fs->p[i]));
    }

    if (fs->num_trees)
	if (!inittree(mi)) {
		return False;
	}

    /* if no fire particles then initialise rain particles */
    if (!fs->np)
    {
	vinit(fs->min,-7.0f,-0.2f,-7.0f);
  	vinit(fs->max,7.0f,8.0f,7.0f);
    	for (i = 0; i < NUMPART; i++) {
	    setnewrain(fs, &(fs->r[i]));
    	}
    }

    return True;
}