hytopia/docs/server.entitymanager.md

The HYTOPIA SDK makes it easy for developers to create massively multiplayer games using JavaScript or TypeScript.

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[Home](./index.md) &gt; [server](./server.md) &gt; [EntityManager](./server.entitymanager.md)

## EntityManager class

Manages entities in a world.

When to use: querying and filtering entities within a specific world. Do NOT use for: cross-world queries; access each world's manager separately.

**Signature:**

```typescript
export default class EntityManager 
```

## Remarks

The EntityManager is created internally per `World` instance.

The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the `EntityManager` class.

## Example


```typescript
// Get all entities in the world
const entityManager = world.entityManager;
const entities = entityManager.getAllEntities();
```
\*\*Category:\*\* Entities

## Properties

<table><thead><tr><th>

Property


</th><th>

Modifiers


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

[entityCount](./server.entitymanager.entitycount.md)


</td><td>

`readonly`


</td><td>

number


</td><td>

The number of spawned entities in the world.

\*\*Category:\*\* Entities


</td></tr>
<tr><td>

[world](./server.entitymanager.world.md)


</td><td>

`readonly`


</td><td>

[World](./server.world.md)


</td><td>

The world this manager is for.

\*\*Category:\*\* Entities


</td></tr>
</tbody></table>

## Methods

<table><thead><tr><th>

Method


</th><th>

Modifiers


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

[getAllEntities()](./server.entitymanager.getallentities.md)


</td><td>


</td><td>

Gets all spawned entities in the world.


</td></tr>
<tr><td>

[getAllPlayerEntities()](./server.entitymanager.getallplayerentities.md)


</td><td>


</td><td>

Gets all spawned player entities in the world.


</td></tr>
<tr><td>

[getEntitiesByTag(tag)](./server.entitymanager.getentitiesbytag.md)


</td><td>


</td><td>

Gets all spawned entities in the world with a specific tag.


</td></tr>
<tr><td>

[getEntitiesByTagSubstring(tagSubstring)](./server.entitymanager.getentitiesbytagsubstring.md)


</td><td>


</td><td>

Gets all spawned entities in the world with a tag that includes a specific substring.


</td></tr>
<tr><td>

[getEntity(id)](./server.entitymanager.getentity.md)


</td><td>


</td><td>

Gets a spawned entity in the world by its ID.


</td></tr>
<tr><td>

[getEntityChildren(entity)](./server.entitymanager.getentitychildren.md)


</td><td>


</td><td>

Gets all child entities of an entity.


</td></tr>
<tr><td>

[getPlayerEntitiesByPlayer(player)](./server.entitymanager.getplayerentitiesbyplayer.md)


</td><td>


</td><td>

Gets all spawned player entities in the world assigned to the provided player.


</td></tr>
</tbody></table>