*| [JavaECS](../../README.md) | [docs](../overview.md) | [system](./dir.md) | ECSSystem[]().md*
# System Manager

### In this section
[About](#about)

[Implementation](#implementation)

[Constructors](#constructors)

[Methods](#methods)

[Fields](#fields)

[Examples](#examples)

[Notes](#notes)


## About
The system manager class controls references to the systems.

## Implementation
See [System.md](./System.md#implementation)
## Constructors
Default constructor
``` java
public ECSSystem(){}
```

<br>

## Methods
### init
``` java
public void init(){}
```
Functionality that needs to occur at the initialisation of the system should be performed here
* `init()` should be called only once, before the system is utilised
* An example of the type of call that could be made here is opening a file

<br>

### update
``` java
public void update(){}
```
Functionality that needs to be called regularly should be defined here
* `update()` is intended to be called regularly

<br>


## Fields
### entities
``` java
Set<Integer> entities = new HashSet<>();
```
The list of entities associated with this system

<br>

## Examples

<br>

## Notes