# TOUCH EFFECT SYSTEM DOCS 🔰

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**Touch Effect System** is a Unity asset that creates visual touch feedback for user interactions. It generates smooth, customizable trails or one-touch effect that follow finger movements and mouse input. The system is particularly well-suited for mobile applications and games requiring touch visualization. The system features platform-specific optimization and extensive shader & sprite customization.

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| Trail effects                                                                                                                                                                                                                                                                              | One-Touch effects                                                                                                                                                                                                                                                                           | Accent effects                                                                                                                                                                                                                                                                             | Combinations                                                                                                                                                                                                                                                                               |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
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| TouchGlowTrailFairy                                                                                                                                                                                                                                                                        | TouchRipple                                                                                                                                                                                                                                                                                 | TouchStarTrail                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                            |

Key features:

* Visual effects using UI particles with **shader-based** rendering and smart object pooling for optimal performance.
* Visual accent effects using UI particles with **sprite-based** rendering and smart object pooling for optimal performance.
* **OneTouch** mode for leaving a single touch mark and **Trail** for a continuous trace.
* **Cross-platform** input support (PC, Mobile) with Unity's Old and New Input System compatibility, including **multi-touch** tracking. Platform-specific optimization with separate desktop and mobile settings for maximum performance on each device type.
* Extensive visual **customization** with 25+ shader variants (glow, blur, geometric shapes) and adjustable trail properties. As for sprite-based trails, textures, colors and behaviour are easily replaceable. [See all the prepared prefabs in Demo & Ideas](https://octanta-studio.gitbook.io/touch-effect-system-for-unity/usage-guide/demo-and-ideas).
* **Universal rendering** support (Built-In RP, URP, and HDRP) with all Canvas render modes (Overlay, Camera, World Space). Detection is automatic, no manual setup required.

Technical details:

* Developed using Unity 6000.0.42f1.
* Tested on mid-range Android devices (API 24+) and Windows 10/11 PCs with consistent performance.
* Trail update execution: typically under 0.1 ms per frame with minimal FPS impact during active touch interactions.
* The asset relies only on standard Unity components and classes, with no third-party dependencies required.
* Platform Android is not supported with HDRP.
