# Texture Sheet Animation module reference

> Explore properties on the Texture Sheet Animation module, to configure particles that use a texture grid to create animation frames.

A particle’s graphic need not be a still image. This module lets you treat the Texture as a grid of separate sub-images that can be played back as frames of animation.

## Grid mode properties

| **Property**             | **Function**                                                                                                                                                                 |
| ------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Mode popup**           | Select **Grid** mode.                                                                                                                                                        |
| **Tiles**                | The number of tiles the Texture is divided into in the X (horizontal) and Y (vertical) directions.                                                                           |
| **Animation**            | The Animation mode can be set to **Whole Sheet** or **Single Row** (that is, each row of the sheet represents a separate Animation sequence).                                |
| **Time Mode**            | Choose how the Particle System samples frames in the animation.                                                                                                              |
|     Lifetime             | Sample frames using an Animation Curve over the lifetime of the particle.                                                                                                    |
|     Speed                | Sample frames based on the speed of the particle. A speed range specifies the minimum and maximum speed range for the frame selection.                                       |
|     FPS                  | Sample frames based on the specified frames-per-second value.                                                                                                                |
| **Row Mode**             | Make the Particle System choose a row from the Texture sheet to produce the animation. This property is only available when the **Animation** mode is set to **Single Row**. |
|     Custom               | Use a specific row of the Texture sheet for the animation.                                                                                                                   |
|     Random               | Randomly select a row for each particle when producing the animation.                                                                                                        |
|     Mesh Index           | Select a row based on the Mesh index assigned to a particle. This is useful when you want to ensure that a particle using a particular Mesh also uses the same Texture.      |
| **Random Row**           | Chooses a row from the sheet at random to produce the animation. This option is only available when **Single Row** is selected as the **Animation** mode.                    |
| **Row**                  | Selects a particular row from the sheet to produce the animation This option is only available when **Single Row** mode is selected and **Random Row** is disabled.          |
| **Frame over Time**      | A curve that specifies how the frame of animation increases as time progresses.                                                                                              |
| **Start Frame**          | Allows you to specify which frame the particle animation should start on (useful for randomly phasing the animation on each particle).                                       |
| **Cycles**               | The number of times the animation sequence repeats over the particle’s lifetime.                                                                                             |
| **Affected UV Channels** | Allows you to specify exactly which UV streams are affected by the Particle System.                                                                                          |

## Sprite mode properties

For some properties in this section, you can use different modes to set their value. For information on the modes you can use, refer to [Vary Particle System properties over time](/engine/6000.6/manual/visual-effects/particle-systems/varying-particle-system-properties-over-time.md.md).

| **Property**            | **Function**                                                                                                                           |
| ----------------------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| **Mode popup**          | Select **Sprites** mode.                                                                                                               |
| **Frame over Time**     | A curve that specifies how the frame of animation increases as time progresses.                                                        |
| **Start Frame**         | Allows you to specify which frame the particle animation should start on (useful for randomly phasing the animation on each particle). |
| **Cycles**              | The number of times the animation sequence repeats over the particle’s lifetime.                                                       |
| **Enabled UV Channels** | Allows you to specify exactly which UV streams are affected by the Particle System.                                                    |

## Additional resources

* [Particle animation](/engine/6000.6/manual/visual-effects/particle-systems/configuring-particles/particle-animation.md)