Emission and Shape

Learn the Emission rate and Shape modules.

Emission Module

The Emission module determines the rate and bursts with which particles appear. The rateOverTime property controls how many particles are spawned per second. Additionally, a burst can be configured for sudden explosions, launching dozens of particles in a single frame.

var emission = ps.emission;
emission.rateOverTime = 25f;

Shape Module

The Shape module controls the geometric volume from which particles spawn and the directions in which they scatter. Common shapes include Cone (torches and rocket engines), Sphere (explosions), and Box (rain and snow). Narrowing the angle focuses particles in a specific direction.

var shape = ps.shape;
shape.shapeType = ParticleSystemShapeType.Cone;

Exercise Read Emission Rate

Assign emission.rateOverTime to variable hiz and print it with Debug.Log("Uretim: " + hiz);.

Show example solution

using System;

public class EmissionModule
{
    public float rateOverTime = 20f;
}

public static class Debug
{
    public static void Log(object message) => Console.WriteLine(message);
}

public class Program
{
    public static void Main()
    {
        EmissionModule emission = new EmissionModule();
        float hiz = emission.rateOverTime;
        Debug.Log("Uretim: " + hiz);
    }
}

Test yourself

Which property in the Emission module determines the continuous amount of particles spawned per second?
- maxParticles
- simulationSpeed
- startSpeed
- rateOverTime
Show answer

rateOverTime — rateOverTime determines the number of particles emitted per second over time.

Set Emission Rate

emission.____ = 50f;

Show answer

emission.rateOverTime = 50f;

Module and Parameter Matching

Emission

Module setting particle emission rate
rateOverTime

Number of particles emitted per second
Shape

Geometric volume of emitted particles
Burst

Instant burst of multiple particles

Next lesson: Color over lifetime

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