Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.
Particles System | Polishing and Export your Game
Unity for Beginners
course content

Contenido del Curso

Unity for Beginners

Unity for Beginners

1. Unity Introduction
2. Write your First Script
3. Unity Physics
4. Unity UI and Sounds
5. Polishing and Export your Game

bookParticles System

In Unity, a particle system is a powerful tool used for creating various visual effects such as fire, smoke, explosions, rain, sparks, and more. It's essentially a collection of small, simple objects (particles) that are generated and controlled dynamically to create complex effects.

When we create a particle system this is it’s interface in the inspector

Key properties:

Lifetime: Determines how long each particle exists before disappearing. Specified in seconds.

Start Color: Defines the initial color of particles when they are emitted. Can be a single color or a gradient, allowing for smooth color transitions.

Start Size: Specifies the initial size of particles upon emission. Size can be uniform for all particles or randomized within a range.

Start Speed: Sets the initial velocity of particles when they are emitted. Determines how fast particles move away from the emitter.

Rotation: Determines whether particles rotate and how they rotate over their lifetime. Rotation can add realism to effects like smoke, fire, or debris.

Emission

Rate Over Time: This property controls the number of particles emitted per second.

It's a straightforward way to adjust the density of particle effects.

For example, setting a rate of 10 particles per second means that every second, 10 new particles will be emitted from the emitter.

Bursts: Burst emission allows you to emit particles in bursts rather than continuously.

You can define specific intervals during which a large number of particles are emitted all at once.

This is useful for creating effects like explosions or sudden bursts of sparks.

Shape

Common Emission Shapes:

Point:

  • Emit particles from a single point in space;
  • Useful for creating effects like sparks, magic spells, or single-point explosions.

Sphere:

  • Emit particles from a spherical volume;
  • You can control the radius of the sphere, allowing for effects like smoke plumes or explosions that emanate outward in all directions.

Cone:

  • Emit particles in a cone-shaped area;
  • Parameters such as angle and length of the cone can be adjusted to control the spread and direction of particles;
  • Useful for effects like gunfire, rocket thrusters, or directional sparks.

Box:

  • Emit particles within a rectangular volume;
  • You can specify the dimensions of the box along each axis, allowing for precise control over the shape and size of the emission area;
  • Useful for effects like rain, snow, or debris falling within a confined area.

Mesh:

  • Emit particles from the surface of a 3D mesh;
  • Allows for more complex and customizable emission shapes based on the geometry of the mesh;
  • Useful for effects like sparks emanating from a metal surface or leaves falling from trees.

Additional Options and Parameters:

Randomize Direction: Some emission shapes allow you to randomize the direction of emitted particles, adding variation and realism to the effect.

Spread: Controls the spread or divergence of emitted particles within the shape. Higher spread values result in particles being emitted in a wider area.

Controle particles with script:

In the Start() method, the Play() method is called on the my_particles ParticleSystem component, causing it to start emitting particles. Immediately after calling Play(), the Stop() method is called on the same my_particles ParticleSystem component, causing it to stop emitting particles.

This is the official documentation from unity about the particles system: Particle System

1. What is a particle system in Unity?
2. What property controls the number of particles emitted per second in Unity's particle system?
What is a particle system in Unity?

What is a particle system in Unity?

Selecciona la respuesta correcta

What property controls the number of particles emitted per second in Unity's particle system?

What property controls the number of particles emitted per second in Unity's particle system?

Selecciona la respuesta correcta

¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 5. Capítulo 1
some-alt