C++ (Cpp) clPtr::GetParticles Examples

Example #1

File: ParticleEmitter.cpp Project: adarash/Mastering-Android-NDK

void clParticleEmitter_Sphere::EmitParticles( const clPtr<clParticleSystem>& PS, float DeltaTime ) const
{
	FAccumulatedTime += DeltaTime;

	while (
	   FAccumulatedTime > 1.0f / FEmissionRate &&
	   PS->GetParticles().size() < FMaxParticles )
	{
		FAccumulatedTime -= 1.0f / FEmissionRate;
		sParticle P;

		float Theta = Math::RandomInRange( 0.0f, Math::TWOPI );
		float Phi   = Math::RandomInRange( 0.0f, Math::TWOPI );
		float R     = FRadius;

		float SinTheta = sin( Theta );

		float x = R * SinTheta * cos( Phi );
		float y = R * SinTheta * sin( Phi );
		float z = R * cos( Theta );

		P.FPosition = FCenter + vec3( x, y, z );
		P.FVelocity = vec3( x, y, z ).GetNormalized() * Math::RandomInRange( FRadialVelocityMin, FRadialVelocityMax );
		P.FAcceleration = vec3( 0.0f );
		P.FTTL = Math::RandomInRange( FLifetimeMin, FLifetimeMax );
		P.FLifeTime = P.FTTL;
		P.FRGBA = Math::RandomVector4InRange( FColorMin, FColorMax );
		P.FRGBA.w = 1.0f;
		P.FSize = Math::RandomInRange( FSizeMin, FSizeMax );
		PS->AddParticle( P );
	}
}

Example #2

File: ParticleEmitter.cpp Project: adarash/Mastering-Android-NDK

void clParticleEmitter_Explosion::EmitParticles( const clPtr<clParticleSystem>& PS, float DeltaTime ) const
{
	// emit secondary particles
	auto& Particles = PS->GetParticles();

	size_t OriginalSize = Particles.size();

	for ( size_t i = 0; i != OriginalSize; i++ )
	{
		if ( Particles[i].FRGBA.w > 0.99f && Particles.size() < FMaxParticles )
		{
			// create a secondary particle
			sParticle P;

			P.FPosition = Particles[i].FPosition;
			P.FVelocity = Particles[i].FVelocity * Math::RandomVector3InRange( vec3( 0.1f ), vec3( 1.0f ) );
			P.FAcceleration = FAcceleration;
			P.FTTL = Particles[i].FTTL * 0.5f;
			P.FLifeTime = P.FTTL;
			P.FRGBA = Particles[i].FRGBA * Math::RandomVector4InRange( vec4( 0.5f ), vec4( 0.9f ) );
			P.FRGBA.w = 0.95f;
			P.FSize = Particles[i].FSize * Math::RandomInRange( 0.1f, 0.9f );

			PS->AddParticle( P );
		}
	}

	if ( FEmitted ) { return; }

	FEmitted = true;

	for ( size_t i = 0; i != FEmissionRate; i++ )
	{
		sParticle P;

		float Theta = Math::RandomInRange( 0.0f, Math::TWOPI );
		float Phi   = Math::RandomInRange( 0.0f, Math::TWOPI );

		float SinTheta = sin( Theta );

		float x = SinTheta * cos( Phi );
		float y = SinTheta * sin( Phi );
		float z = cos( Theta );

		P.FPosition = FCenter;
		P.FVelocity = vec3( x, y, z ).GetNormalized() * Math::RandomInRange( FRadialVelocityMin, FRadialVelocityMax );
		P.FAcceleration = FAcceleration;
		P.FTTL = Math::RandomInRange( FLifetimeMin, FLifetimeMax );
		P.FLifeTime = P.FTTL;
		P.FRGBA = Math::RandomVector4InRange( FColorMin, FColorMax );
		P.FRGBA.w = 1.0f;
		P.FSize = Math::RandomInRange( FSizeMin, FSizeMax );
		PS->AddParticle( P );
	}
}

Example #3

File: ParticleEmitter.cpp Project: adarash/Mastering-Android-NDK

void clParticleEmitter_Box::EmitParticles( const clPtr<clParticleSystem>& PS, float DeltaTime ) const
{
	FAccumulatedTime += DeltaTime;

	while (
	   FAccumulatedTime > 1.0f / FEmissionRate &&
	   PS->GetParticles().size() < FMaxParticles )
	{
		FAccumulatedTime -= 1.0f / FEmissionRate;
		sParticle P;
		P.FPosition = Math::RandomVector3InRange( FPosMin, FPosMax );
		P.FVelocity = Math::RandomVector3InRange( FVelMin, FVelMax );
		P.FAcceleration = LVector3( 0.0f );
		P.FTTL = Math::RandomInRange( FLifetimeMin, FLifetimeMax );
		P.FLifeTime = P.FTTL;
		P.FRGBA = Math::RandomVector4InRange( FColorMin, FColorMax );
		P.FRGBA.w = 1.0f;
		P.FSize = Math::RandomInRange( FSizeMin, FSizeMax );
		PS->AddParticle( P );
	}
}