> For the complete documentation index, see [llms.txt](https://docs.overdare.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.overdare.com/development/api-reference/classes/physicsservice.md).

# PhysicsService

PhysicsService : `Instance`

## Overview

PhysicsService is a service that finely controls collision rules between objects in physics computation, allowing you to create collision groups and configure whether each group interacts with the others.

For example, it can be used to let players pass through specific walls based on their level.

## Properties

## Methods

### IsChannelRegistered

Returns whether the given CollisionChannel can currently be used.

#### Parameters

| `Enum.CollisionChannel` Channel | The collision channel to check. |
| ------------------------------- | ------------------------------- |

#### Return

| `boolean` | `true` if the channel is registered (usable), `false` otherwise. |
| --------- | ---------------------------------------------------------------- |

#### Code Samples

### IsCustomChannel

Returns whether the given CollisionChannel is a custom channel registered by the developer, as opposed to one of Studio's built-in default channels.

#### Parameters

| `Enum.CollisionChannel` Channel | The CollisionChannel to check. |
| ------------------------------- | ------------------------------ |

#### Return

| `boolean` | `true` if the channel is a custom, developer-registered channel, `false` if it is a built-in channel or not registered. |
| --------- | ----------------------------------------------------------------------------------------------------------------------- |

#### Code Samples

### IsCustomProfile

Returns whether the given collision profile was created by, or is editable by, the developer, as opposed to being one of OVERDARE's built-in default profiles.

#### Parameters

| `string` ProfileString | The name of the collision profile to check. |
| ---------------------- | ------------------------------------------- |

#### Return

| `boolean` | `true` if the profile is a custom, editable profile, `false` if it is a built-in default profile or does not exist. |
| --------- | ------------------------------------------------------------------------------------------------------------------- |

#### Code Samples

### IsProfileRegistered

Returns whether a collision profile with the given name currently exists.

#### Parameters

| `string` ProfileString | The name of the collision profile to check. |
| ---------------------- | ------------------------------------------- |

#### Return

| `boolean` | `true` if a profile with that name is registered, `false` otherwise. |
| --------- | -------------------------------------------------------------------- |

#### Code Samples

## Events

## See also

{% content-ref url="<https://github.com/overdare/creator-guide-eng/blob/main/manual/studio-manual/game-development/collision-groups.md>" %}
<https://github.com/overdare/creator-guide-eng/blob/main/manual/studio-manual/game-development/collision-groups.md>
{% endcontent-ref %}