Smrvfx

Smrvfx is a Unity package that provides a set of visual effects (VFX) tools and utilities for creating immersive and realistic virtual reality (VR) experiences. It includes a collection of pre-built VFX assets, as well as a framework for creating custom VFX using Unity's Particle System and VFX Graph.

Pros

• Comprehensive VFX Library: Smrvfx comes with a wide range of pre-built VFX assets, including fire, smoke, explosions, and more, which can be easily integrated into VR projects.
• VFX Graph Integration: The package seamlessly integrates with Unity's VFX Graph, allowing developers to create custom VFX with a visual programming interface.
• Performance Optimization: The VFX assets in Smrvfx are optimized for VR performance, ensuring smooth and efficient rendering in immersive environments.
• Customization and Extensibility: Developers can easily customize the existing VFX assets or create their own using the provided framework and tools.

Cons

• Unity Version Compatibility: Smrvfx is primarily designed for older versions of Unity, and its compatibility with the latest versions may not be guaranteed.
• Limited Documentation: The project's documentation could be more comprehensive, making it challenging for new users to get started with the package.
• Dependency on Unity: As a Unity-specific package, Smrvfx is not applicable to projects using other game engines or development platforms.
• Potential Performance Issues: While the package is optimized for VR performance, some VFX may still cause performance issues, especially on lower-end hardware.

Code Examples

Example 1: Creating a Fireball VFX using VFX Graph

// Create a new VFX Graph asset
var vfxGraph = ScriptableObject.CreateInstance<VFXGraph>();

// Add a Particle System Spawn block
var spawnBlock = vfxGraph.AddChild<VFXSpawnerBlock>();
spawnBlock.SetSettingValue("Rate", 100f);

// Add a Particle System Attribute block
var attributeBlock = vfxGraph.AddChild<VFXAttributeBlock>();
attributeBlock.SetSettingValue("Lifetime", 2f);
attributeBlock.SetSettingValue("Size", 0.5f);
attributeBlock.SetSettingValue("Color", new Color(1f, 0.5f, 0f));

// Connect the blocks
spawnBlock.outputContext.Connect(attributeBlock.inputContext);

// Create a new VFX Asset and assign the VFX Graph
var vfxAsset = ScriptableObject.CreateInstance<VisualEffectAsset>();
vfxAsset.SetGraphVersion(vfxGraph);

This code example demonstrates how to create a simple fireball VFX using Unity's VFX Graph. It sets up a Particle System Spawn block to control the rate of particle emission, and a Particle System Attribute block to define the lifetime, size, and color of the particles.

Example 2: Integrating a Smrvfx VFX Asset into a VR Scene

// Load the Smrvfx VFX asset
var vfxAsset = Resources.Load<VisualEffectAsset>("Smrvfx/Explosion");

// Create a new VFX component and assign the asset
var vfxComponent = gameObject.AddComponent<VisualEffect>();
vfxComponent.visualEffectAsset = vfxAsset;

// Set the VFX transform to match the game object's transform
vfxComponent.transform.position = transform.position;
vfxComponent.transform.rotation = transform.rotation;

// Play the VFX
vfxComponent.Play();

This code example shows how to integrate a pre-built Smrvfx VFX asset into a VR scene. It loads the VFX asset, creates a new VisualEffect component, and assigns the asset to the component. The VFX transform is then set to match the game object's transform, and the VFX is played.

Example 3: Creating a Custom VFX using Smrvfx Utilities