Particle System

Abhishek Smith

Abhishek Smith

Building Outscal | Land Jobs in the gaming industry | EA, Epic Games, TCS, | CMU, IIT K

Main Module Essentials

  • loop = Enable continuous playback
  • startLifetime = Particle duration
  • startSpeed = Initial velocity
  • startSize = Particle scale
  • gravityModifier = Physics influence

⚠️ Runtime changes affect new particles only!


Emission & Shape

  • rateOverTime = Spawn frequency
  • rateOverDistance = Movement-based spawn
  • shapeType = Emission pattern
  • radius/angle = Shape properties

✅ Perfect for customizing spawn behavior


Lifetime Properties

  • colorOverLifetime = Color evolution
  • sizeOverLifetime = Scale changes
  • velocityOverLifetime = Movement control
  • rotationOverLifetime = Spin effects

✅ Use curves for smooth transitions


Visual Enhancement

  • trails = Motion streaks
  • noise = Add turbulence
  • renderer.renderMode = Display style
  • subEmitters = Particle chains

⚠️ Manage overdraw carefully for performance!


Pro Tips

  • Combine similar effects into one system
  • Use LOD for distant particles
  • Monitor memory usage when pooling
  • Choose appropriate texture sizes

✅Profile GPU fillrate impact


Performance Optimization:

  • Minimize overlapping transparencies
  • Simplify collision detection
  • Use efficient particle shaders
  • Consider GPU instancing

✅Manage system activation states


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