# PhysicsSpace > Provides the ability to store and query information in a spatial database. ## Definition * **Type:** Struct * **Namespace:** [Unity.U2D.Physics](/engine/6000.6/script-reference/unity/u2d/physics.md) * **Assembly:** UnityEngine.PhysicsCore2DModule * **Implements:** [IEquatable\](https://learn.microsoft.com/dotnet/api/system.iequatable-1) ```csharp public readonly struct PhysicsSpace : IEquatable ``` ## Properties | Property | Description | | ---------------------------------------------------------------------------------------------------- | ------------------------------------------------------- | | [isValid](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/isvalid.md) | Check if a Physics Space is valid. | | [memoryAllocated](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/memoryallocated.md) | Get the total memory allocated for the space, in bytes. | | [proxyCount](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/proxycount.md) | Get the proxy count in the space. | | [rootAABB](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/rootaabb.md) | Get the root bounds that contain all the AABB proxies. | ## Methods | Method | Description | | ---------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [CastRay](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/castray.md) | Find proxies that intersect the specified ray. The results indicate that the proxy AABB intersect the specified cast ray, in no specific order. | | [CastShape](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/castshape.md) | Find proxies that intersect the specified shape. The results indicate that the proxy AABB intersect the specified cast shape, in no specific order. | | [ClearProxies](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/clearproxies.md) | Clear all space proxies. You should no longer use any previously returned [PhysicsSpace.ProxyHandle](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/proxyhandle.md) as they may be invalid or direct to the wrong proxy in the future. The space will continue with a similar proxy capacity therefore if full de-allocation is required, the space should be destroyed and a new one created. | | [Clone](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/clone.md) | Clear any existing proxies and clone all [PhysicsShape](/engine/6000.6/script-reference/unity/u2d/physics/physicsshape.md) found in the specified [PhysicsWorld](/engine/6000.6/script-reference/unity/u2d/physics/physicsworld.md). Each proxy created will have a user-handle assigned as [\_physicsHandle](/engine/6000.6/script-reference/unity/u2d/physics/physicsshape/physicshandle.md). This means you can get the referenced shape by using [PhysicsShape](/engine/6000.6/script-reference/unity/u2d/physics/physicsshape/ctor.md). | | [CreateProxy](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/createproxy.md) | Create a space proxy. | | [Destroy](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/destroy.md) | Destroy the Physics Space. | | [DestroyProxy](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/destroyproxy.md) | Destroy a space proxy. | | [GetProxyAABB](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/getproxyaabb.md) | Set the proxy physics AABB. | | [GetProxyCategories](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/getproxycategories.md) | Get the proxy categories. | | [GetProxyUserHandle](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/getproxyuserhandle.md) | Get the proxy user handle. | | [OverlapAABB](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/overlapaabb.md) | Find proxies that overlap the specified AABB. The results indicate that the proxy AABB overlap the specified AABB, in no specific order. | | [OverlapPoint](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/overlappoint.md) | Find proxies that overlap the specified point. The results indicate that the proxy AABB overlap the specified point, in no specific order. | | [SetProxyAABB](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/setproxyaabb.md) | Set the proxy AABB. | | [SetProxyCategories](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/setproxycategories.md) | Set the proxy categories. This can be an expensive operation as all ancestors need to be recalculated. | | [SetProxyUserHandle](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/setproxyuserhandle.md) | Set the proxy user handle. | ## Static Methods | Method | Description | | ------------------------------------------------------------------------------------------ | ------------------------------------ | | [Create](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/create.md) | Create a Physics Space. | | [DestroyAll](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/destroyall.md) | Destroy all active Physics Space. | | [GetSpaces](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/getspaces.md) | Get all the currently active spaces. | ## Classes | Class | Description | | ------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [PhysicsSpace.ShapeSpace](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/shapespace.md) | Query a [PhysicsSpace](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace.md) assuming the [PhysicsSpace.ProxyHandle](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/proxyhandle.md) are all [PhysicsShape](/engine/6000.6/script-reference/unity/u2d/physics/physicsshape.md). | ## Structs | Struct | Description | | --------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | [PhysicsSpace.CastResult](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/castresult.md) | The narrowphase cast results. | | [PhysicsSpace.ProxyHandle](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/proxyhandle.md) | A proxy identity added to the space. | | [PhysicsSpace.ProxyResult](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/proxyresult.md) | A space result from [PhysicsSpace.OverlapAABB](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/overlapaabb.md), [PhysicsSpace.CastRay](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/castray.md) or [PhysicsSpace.CastShape](/engine/6000.6/script-reference/unity/u2d/physics/physicsspace/castshape.md). |