Particle System

The particle system uses an object pool: inactive particles are reused instead of being allocated every frame, giving stable performance with no runtime allocations and predictable memory usage.

Creating a system

ParticleSystem particles(1000); // max capacity

Configuration

ParticleConfig config;

config.LifeTime = 1.5f;

config.SpeedMin = 50.0f;
config.SpeedMax = 200.0f;

config.SizeStart = 16.0f;
config.SizeEnd = 0.0f;

config.ColorStart = {1, 1, 0, 1};
config.ColorEnd   = {1, 0, 0, 0};

config.Gravity = {0, 150};

config.DirectionAngle = 0.0f;
config.SpreadAngle = glm::radians(45.0f);

config.RotationSpeedMin = -90.0f;
config.RotationSpeedMax = 90.0f;

Emitting particles

particles.Emit({400, 300}, 20, config);

Parameter	Description
Position	Spawn position
Count	Number of particles
Config	Particle configuration

Updating & rendering

particles.Update(dt);
particles.Draw();

Statistics

uint32_t active   = particles.GetActiveCount();
uint32_t capacity = particles.GetCapacity();