Yellow scene with hpRt(true)?

SONB · 02-08-2009 07:17 PM

Hi!

I made a star field with particles which are all white. Then I set hpRt(true), now my stars are yellow..
Why is that? How can I make them white again without deactivating hpRt?

Thanx!

SONB

**Esenthel** · 02-08-2009 10:07 PM

Hi, could you make a screenshot or something?

SONB · 02-08-2009 11:43 PM

Sure.

EDIT: The renderer runs in RM_PRT_PAL mode. When I set it to RM_PRT_BLN the stars are white but very dark.

**Esenthel** · 02-09-2009 12:10 AM

I'll do a quick sample on static particles (non fading out) and will be back to you soon.

SONB · 02-09-2009 12:21 AM

Cool

Oh, a quick question: The Particles.h says that I can make particles' life infinite when I set it to <=0 but I can't see my particles when I set their life=0.0; Do I understand it wrong or are there some extra settings I must change?

**Esenthel** · 02-09-2009 01:12 AM

Hi, just to tell you, I think I won't make it today with the particles tutorial, I want to finish first the new clouds that I've started working on, I think tomorrow I'll be able to look into the particles smile

SONB · 02-09-2009 01:29 AM

On no problem, Esenthel! I think I can live without hpRt... till tomorrow grin

Nice to see you being busy with new features.

**Esenthel** · 02-09-2009 02:32 PM

I've finished the clouds, now I can take a look into the particles

**Esenthel** · 02-09-2009 04:03 PM

Hi, I've uploaded a new version of the engine, please download it.

I'm guessing that you're creating particles in PARTICLE_CUSTOM mode,
so for this please use createCustom method for particle creation
then you can set
func=PARTICLE_FULL; for full opacity mode

I believe it will be ok now

**Esenthel** · 02-09-2009 04:13 PM

altough for maximum performance I encourage that you have stars embedded into your skybox

SONB · 02-09-2009 04:36 PM

Hm, there is no PARTICLE_FULL in Particle.h... only _SQRT and _SIN like before.

I'm not using custom particles, wanted to try it now but VC says "PARTICLE_FULL: undeclared identifier" :?
And yes, I downloaded the last version.. hmm

SONB · 02-09-2009 04:44 PM

Aaaah, sorry, my fault.. or Firefox's fault. It didn't really downloaded it just copied an old version from cache..
IE made it right.

Ok, I'll try the new settings now.

SONB · 02-09-2009 08:16 PM

Esenthel, I need your help :(

What has to be done with custom particles when they died? I mean, every frame I'm changing the position of each particle and when their life time is out I get "0xC0000005: Access violation writing location 0x0000000c" on *position = Rnd(Ball(6.0)); Do I have to manually reborn them or something?
Sorry, there is no tutorial for custom particles and I don't have a clue on how to work with them. The position changing did work with normal particles.

Here is my code:

Code:

Gfx *gfx = Gfxs("../data/gfx/particle/star.gfx");

UInt col = ARGB(100, 40, 40, 40);

Int num  = 2000;

Flt r    = 0.05,

    life = 7.0,

    vel  = 0;

Vec accel = 0;

Shape shape = Box(12, 12, 12);

part[0].createCustom(*gfx, col, num, r, life, accel, Rnd(Shape(shape)));

part[0].reset();

part[0].func = PARTICLE_FULL;

And in UpdateGame:

Code:

for(UInt n=0;n<2000;n++) {

    Particle *particle = &part[0].p(n);

        Vec *position = &particle->pos;

        *position = Rnd(Ball(6.0));

        while(position->length() < 10.1 || position->length() > 10.3)

            position->setLength(10.2);

}

And Render:

Code:

case RM_PRT_PAL:

            part[0].draw();

        break;

The Rnd(Shape(shape)) in createCustom(...) does nothing, so I do *position = Rnd(Ball(6.0)); for each particle in UpdateGame.
The particles live 7 sec till I get "Access violation" and even in these 7 sec I can't see my particles, so I assume I do something wrong in particle creation.

**Esenthel** · 02-09-2009 09:17 PM

you should specify life of 0 (infinite)

don't do for(UInt n=0;n<2000;n++) {
but do REP(part[0].num())

SONB · 02-10-2009 12:37 AM

Thanx, Esenthel, I get no "access violation" but I still can't see my particles...
Do fade_in and fade_out play some role in custom particles? Because Particle.h says, they are equal life/2 and life is equal 0, so 0/2=0 ... I don't know, just a thought.

I would go back to non-custom particles but they are yellow. Does this yellow maybe something to do with the particle palette in engine.pak?

Yellow scene with hpRt(true)?
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