Particle System component in Unity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the particle system.

Unity

ParticleSystem ps = GetComponent<ParticleSystem>();
ps.[1]();

Drag options to blanks, or click blank then click option'

APlay

BStop

CPause

DClear

Attempts:

3 left

💡 Hint

Common Mistakes

Using Stop() instead of Play() will stop the particles.

Pause() only pauses the emission.

Clear() removes all particles but does not start emission.

The Play() method starts the particle system emitting particles.

2fill in blank

medium

Complete the code to check if the particle system is currently playing.

Unity

ParticleSystem ps = GetComponent<ParticleSystem>();
if (ps.[1]) {
    Debug.Log("Particles are playing");
}

Drag options to blanks, or click blank then click option'

AisStopped

BisEmitting

CisPaused

DisPlaying

Attempts:

3 left

💡 Hint

Common Mistakes

Using isStopped will check if it is stopped, not playing.

isPaused checks if paused, not playing.

isEmitting is not a valid property.

The isPlaying property returns true if the particle system is currently playing.

3fill in blank

hard

Fix the error in the code to stop the particle system immediately.

Unity

ParticleSystem ps = GetComponent<ParticleSystem>();
ps.[1](ParticleSystemStopBehavior.StopEmittingAndClear);

Drag options to blanks, or click blank then click option'

APause

BClear

CStop

DPlay

Attempts:

3 left

💡 Hint

Common Mistakes

Using Pause() does not stop emission.

Play() starts particles, not stops.

Clear() removes particles but does not stop emission.

The Stop(ParticleSystemStopBehavior.StopEmittingAndClear) method stops the particle system and clears existing particles immediately.

4fill in blank

hard

Fill both blanks to create a dictionary of particle systems and check if each is playing.

Unity

Dictionary<string, ParticleSystem> systems = new Dictionary<string, ParticleSystem>();
systems.Add("fire", fireParticleSystem);

foreach (var [1] in systems) {
    if ([2].isPlaying) {
        Debug.Log($"[1].Key is playing");
    }
}

Drag options to blanks, or click blank then click option'

Aentry

Bsystems

Centry.Value

Dparticle

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'systems' as loop variable causes error.

Using 'entry' but not accessing Value causes type error.

Using 'particle' is unclear and not defined.

In a dictionary foreach, each item is a KeyValuePair, so entry is the variable, and entry.Value accesses the ParticleSystem.

5fill in blank

hard

Fill all three blanks to emit 10 particles with a specific start color and size.

Unity

var main = ps.main;
main.startColor = [1];
main.startSize = [2]f;
ps.[3](10);

Drag options to blanks, or click blank then click option'

AColor.red

B0.5

CEmit

DColor.blue

Attempts:

3 left

💡 Hint

Common Mistakes

Using Color.blue instead of Color.red.

Using wrong method like Play instead of Emit.

Using integer without 'f' for startSize.

Set startColor to Color.red, startSize to 0.5f, and call Emit(10) to emit 10 particles.