Emission and Shape
- Game Development course
- Intermediate
- Lesson 38/83
- 4 min
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;Practice Read Emission Rate
Assign emission.rateOverTime to variable hiz and print it with Debug.Log("Uretim: " + hiz);.
Starter code
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();
// Yayilim hizini oku ve konsola yazdir
}
}Sample 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);
}
}Expected output
Uretim: 20
Questions and answers
Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.
1 Which property in the Emission module determines the continuous amount of particles spawned per second?
- maxParticles
- simulationSpeed
- startSpeed
- rateOverTime Correct answer
Explanation: rateOverTime determines the number of particles emitted per second over time.
2 Set Emission Rate
emission.____ = 50f;emission.rateOverTime = 50f;Explanation: The rateOverTime property is used to configure the particle emission rate per second.
3 Module and Parameter Matching
| Term | Meaning |
|---|---|
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 |