Particle

Particle

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Particle Entity

• Particle class has Entity class as parent.

• Create ParticleEntity with RParticle(shader select)

• Create ParticleCreateInfo and register to RParticle

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RParticle

• Has shader & list of ParticleCreateInfo

• Update All ParticleCreateInfo with deltaTime

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ParticleCreateInfo

• Has information for creating particle.

Particle Color, Size

Particle Generation interval (N particle/frame OR 1 particle/N frame)

Particle Life Time

Particle spread angle, direction, speed

Any particle generate logic can be placed in this.

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ParticleFObjManager

• Manage ParticleFObjs

• If Same texture used, not create new ParticleFObj & return already exist object

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ParticleFObj

• Has vector of ParticleStruct. & ParticleBuffer

• If same particle textures are used, then has same particleFObj.

• Generally, multiple particle images are in 1 texture for blending

• Generate particles in vector and copy info to ParticleBuffer for instancing

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ParticleBuffer

• Opengl buffer(vao, vbo, particle square vertices)

• Draw particles with instancing