Spawn a Particle with Raycast Hit Point / C++ Code

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Spawn a Particle with Raycast Hit Point / C++ Code

#1 by ahmad0karami

Hi ,
How I can Spawn a Particle with Raycast hit point?
I use this code , when F key pressed , I want spawn a particle at Hit.Point but does not work!

Code: Select all

IParticleEffect* pEffect = gEnv->pParticleManager->FindEffect("fire.pfx");
if (pEffect)
{
   pEffect->Spawn(IParticleEffect::ParticleLoc(hit.pt));
}

I Know , this code but do not have position

I searched a lot , I found nothing!!!

Code: Select all

ppe = gEnv->pParticleManager->FindEffect("fire.pfx");
GetEntity()->LoadParticleEmitter(0, ppe);

I do not want make a new class like bullet / projectile /SAM Rocket , etc

here is a way for game play programmers?

Please help me

thank you

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Spawn a Particle with Raycast Hit Point / C++ Code

#2 by ahmad0karami

Also , I Used old system (Database view-Particles tab) for make a particle but does not work again

I used this code , but does not work , bo ho ho

Code: Select all

string effect = "Level.fire.fire01";

IParticleEffect* pParticleEffect = gEnv->pParticleManager->FindEffect(effect);

if (pParticleEffect)

{
Matrix34 effectPos;
effectPos.SetIdentity();
effectPos.SetTranslation(hit.pt);

// also for Spawn(true, effectPos) does not wok!!!
IParticleEmitter* pEffect = pParticleEffect->Spawn(false, effectPos); 

}

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Spawn a Particle with Raycast Hit Point / C++ Code

#3 by ahmad0karami

I think here is a bad bug , because I tested a lot but "fire.pfx" and old system does not access in CryEngine 5.4 wih C++ code

here is a person , tell me , what is happened?

Re: Spawn a Particle with Raycast Hit Point / C++ Code

#4 by mknmknmknjk

pEffect is null? if you have source code, then you can debug it！

https://www.youtube.com/watch?v=XAhgTn_dw3k

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Re: Spawn a Particle with Raycast Hit Point / C++ Code

#5 by ahmad0karami

pEffect is null? if you have source code, then you can debug it！

https://www.youtube.com/watch?v=XAhgTn_dw3k

I already debug this codes above , without null , pEffect have a particle but does not spawn!
thank you for this tutorial , but I think my code must had a bug

Re: Spawn a Particle with Raycast Hit Point / C++ Code

#6 by cry-alex

Hello,

I don't know what exactly is wrong with your setup, but you could have a look at the default particle component https://github.com/CRYTEK/CRYENGINE/blo ... omponent.h. If that doesn't help, it might be helpful to post your code so I can have a look.

Cheers,
Alex

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Re: Spawn a Particle with Raycast Hit Point / C++ Code

#7 by ahmad0karami

Hello,

I don't know what exactly is wrong with your setup, but you could have a look at the default particle component https://github.com/CRYTEK/CRYENGINE/blo ... omponent.h. If that doesn't help, it might be helpful to post your code so I can have a look.

Cheers,
Alex

Thank you Dear Alex , I saw this header , Also I tested a new c++ code , please see my code :

Code: Select all


void CPlayerComponent::SpawnParticleSystemHit(ray_hit hit)
{
	IParticleEffect* pEffect = gEnv->pParticleManager->FindEffect("fire.pfx");  also I test -->> //("Level.fire.fire01");

	if (pEffect == nullptr)
	CryLog("null ptr :-< bo ho ho 1");

	if (pEffect == NULL)
	CryLog("null ptr :-< bo ho ho 2");


	if (pEffect)
	{
		SEntitySpawnParams hitparam;
		hitparam.vPosition = hit.pt;   //GetEntity()->GetPos();
		hitparam.vScale = Vec3(1.f, 1.f, 1.f);
		IParticleEmitter* iemiter = pEffect->Spawn(hitparam.vPosition);    // also I tested -->> IParticleEffect::ParticleLoc(hit.pt)
		CryLog(cstr(pEffect->GetName()));
		CryLog("SPS :-> x:" + ToString(hit.pt.x) + " y:" + ToString(hit.pt.y) + " z:" + ToString(hit.pt.z) + " Enshaallah...");
	}
}

But Does not work Again

I see pEffect is not Empty and access to fire.pfx or old system particle , also I added this header :

Code: Select all

#include <CryParticleSystem\IParticlesPfx2.h>
#include <CryParticleSystem\IParticles.h>

I tested hit.pt
hit.point is value correct related to hit position.

is a way without make a new component or without a new class , I spawn my particle?

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Re: Spawn a Particle with Raycast Hit Point / C++ Code

#8 by ahmad0karami

Excuse me , I forgot , I tell to you , I using CryEngine 5.4 Final Build 164.
Is a way for spawn particle without make a new class or without make a new component ?

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Re: Spawn a Particle with Raycast Hit Point / C++ Code

#9 by fury22uk

You can use component.. you don't have to create it.. It's extremely simple to attach ParticleComponent. But if you really don't want to do it, I recommend you to do that:

1.In Player.h create variable:

Code: Select all

IEntity *pParticleEntity = nullptr;

2.In your .cpp file(I assume you know how to do the raycast properly), create your method:

Code: Select all


void CPlayerComponent::SpawnParticleSystemHit(ray_hit hit)

{

		if (IParticleEffect *pEffect = gEnv->pParticleManager->FindEffect(sName, "Particles"))

		{

			if (!pParticleEntity)

			{

				SEntitySpawnParams spawn;

				spawn.pClass = gEnv->pEntitySystem->GetClassRegistry()->GetDefaultClass();

				pParticleEntity = gEnv->pEntitySystem->SpawnEntity(spawn);

			}

			if (pParticleEntity)

			{

				pParticleEntity->SetPos(hit.pt);

				pParticleEntity->FreeSlot(0);

				pParticleEntity->LoadParticleEmitter(0, pEffect);

			}

		}

}

Cryengine tutorial videos on my Youtube channel! Check it out !
https://www.youtube.com/user/MusicForLifePL20

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Re: Spawn a Particle with Raycast Hit Point / C++ Code

#10 by ahmad0karami

does work , thank you very much DEAR fury22uk
I'm making a C++ game for develop /publish CryEngine to Kurdistan and Iran, etc
I'm sure , CryEngine Community or CryEngine Team will be love it

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