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https://github.com/congcoi123/tenio-examples

A collection of examples is for the TenIO framework.
https://github.com/congcoi123/tenio-examples

examples game-development gameserver java java11 kcp kcp-java tenio

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A collection of examples is for the TenIO framework.

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# TenIO Examples Project [![Tweet](https://img.shields.io/twitter/url/http/shields.io.svg?style=social)](https://twitter.com/intent/tweet?text=TenIO%20is%20a%20java%20NIO%20based%20server%20specifically%20designed%20for%20multiplayer%20games.%0D%0A&url=https://github.com/congcoi123/tenio%0D%0A&hashtags=tenio,java,gameserver,multiplayer,nio,netty,jetty,msgpack,cocos2dx,unity,libgdx,phaserjs%0D%0A&via=congcoi123)
[`TenIO`](https://github.com/congcoi123/tenio) is an open-source project to create multiplayer online games that includes a java NIO (Non-blocking I/O)
based server specifically designed for multiplayer games, which supports UDP, TCP, Websocket, HTTP transports, and available simple client projects for quick development.

This project contains a collection of examples that show you how to manipulate the framework.

## Dependencies
```txt
- tenio-core 0.6.0
- tenio-engine 0.5.0
```

## Requirements
- Java 17

## License
The [`TenIO`](https://github.com/congcoi123/tenio) project is currently available under the [MIT](LICENSE) License.

## Changelog
Please check out the [changelog](CHANGELOG.md) for more details.

## Contributing
Please check out the [contributing guideline](CONTRIBUTING.md) for more details.

## Installation
```sh
$ git clone https://github.com/congcoi123/tenio-examples.git
```

## Simple Implementation
- Establishes a simple server with only a single Java class

```Java
/**
* This class shows how a simple server handle messages that came from a client.
*/
@Bootstrap
public final class TestSimpleServer {

public static void main(String[] params) {
ApplicationLauncher.run(TestSimpleServer.class, params);
}

/**
* Create your own configurations.
*/
@Setting
public static class TestConfiguration extends CoreConfiguration implements Configuration {

@Override
protected void extend(Map extProperties) {
for (Map.Entry entry : extProperties.entrySet()) {
var paramName = entry.getKey();
push(ExampleConfigurationType.getByValue(paramName), String.valueOf(entry.getValue()));
}
}
}

/**
* Define your handlers.
*/

@EventHandler
public static class ConnectionEstablishedHandler extends AbstractHandler
implements EventConnectionEstablishedResult {

@Override
public void handle(Session session, DataCollection message,
ConnectionEstablishedResult result) {
if (result == ConnectionEstablishedResult.SUCCESS) {
var request = (ZeroMap) message;

api().login(request.getString(SharedEventKey.KEY_PLAYER_LOGIN), session);
}
}
}

@EventHandler
public static class PlayerLoggedInHandler extends AbstractHandler
implements EventPlayerLoggedinResult {

@Override
public void handle(Player player, PlayerLoggedInResult result) {
if (result == PlayerLoggedInResult.SUCCESS) {
var parcel = map().putString(SharedEventKey.KEY_PLAYER_LOGIN,
String.format("Welcome to server: %s", player.getName()));

response().setContent(parcel.toBinary()).setRecipientPlayer(player).write();
}
}
}

@EventHandler
public static class ReceivedMessageFromPlayerHandler extends AbstractHandler
implements EventReceivedMessageFromPlayer {

@Override
public void handle(Player player, DataCollection message) {
var parcel =
map().putString(SharedEventKey.KEY_CLIENT_SERVER_ECHO, String.format("Echo(%s): %s",
player.getName(),
((ZeroMap) message).getString(SharedEventKey.KEY_CLIENT_SERVER_ECHO)));

response().setContent(parcel.toBinary()).setRecipientPlayer(player).write();
}
}
}
```

- Supports self-defined commands to interact with the server conveniently
1) Usage

```text
2022-11-20 05:20:38,256 [main] INFO com.tenio.core.server.ServerImpl - [SERVER][Example] Started
$ help
help - Shows all supporting commands
[,,]
info - Provides brief information about players and rooms on the server
player
room
player - Logout the first player from the server
logout first
server - Allows stopping or restarting the server
stop
restart
unban - Allows removing banned Ip addresses from the ban list
[

,,]
$ info player
> There are 1 players > The first 10 entities > [Player{name='IkjvI', properties={}, session=Session{id=0, name='IkjvI', transportType=TCP, createdTime=1668918078524, lastReadTime=1668918078524, lastWriteTime=1668918078524, lastActivityTime=1668918078524, readBytes=75, writtenBytes=120, droppedPackets=0, inactivatedTime=0, datagramRemoteSocketAddress=null, clientAddress='127.0.0.1', clientPort=60659, serverPort=8032, serverAddress='127.0.0.1', maxIdleTimeInSecond=0, activated=true, connected=true, hasUdp=false, enabledKcp=false, hasKcp=false}, currentRoom=null, state=null, roleInRoom=SPECTATOR, lastLoginTime=1668918078589, lastJoinedRoomTime=1668918078588, playerSlotInCurrentRoom=-1, loggedIn=true, activated=true, hasSession=true}]
$
```

2) Make sure to set the command usage flag in _**setting.json**_ file to be **enabled**

```JSON
{
"command": {
"enabled": true
},
"plugin": {
"enabled": false,
"path": "/plugin"
}
}
```

3) Simple implementation
```Java
@Command(label = "player", usage = {
"logout first"
}, description = "Logout the first player from the server")
public class PlayerCommand extends AbstractCommandHandler {

@Override
public void execute(List args) {
var action = args.get(0);
var param = args.get(1);

if (action.equals("logout") && param.equals("first")) {
var players = api().getReadonlyPlayersList();
if (players.isEmpty()) {
CommandUtility.INSTANCE.showConsoleMessage("Empty list of players.");
return;
}
var firstPlayer = players.get(0);
CommandUtility.INSTANCE.showConsoleMessage("Player {" + firstPlayer.getName() + "} is " +
"going to logout.");
api().logout(firstPlayer);
} else {
CommandUtility.INSTANCE.showConsoleMessage("Invalid action.");
}
}
}
```

## Examples
Please start the server before its corresponding client in each example package.
```code
$ java
```
For instance:
```code
$ java TestServerLogin configuration.example1.xml
```

```txt
|-- example
|-- example0
| |-- TestSimpleClient
| |-- TestSimpleServer
|-- example1
| |-- TestClientLogin
| |-- TestServerLogin
|-- example2
| |-- (*)TestFsmMechanism
|-- example3
| |-- TestClientAccessDatagramChannel
| |-- TestServerAccessDatagramChannel
|-- example4
| |-- TestClientMovement
| |-- TestServerMovement
| |-- (*)TestMovementMechanism
|-- example5
| |-- (*)TestEcsMechanism
|-- example6
| |-- TestClientEchoStress
| |-- TestServerEchoStress
|-- example7
| |-- TestServerWebsocket
|-- example8
| |-- TestClientRestful
| |-- TestServerRestful
|-- example9
| |-- TestClientKcpEcho
| |-- TestServerKcpEcho
|-- example10
| |-- TestClientMsgPackEcho
| |-- TestServerMsgPackEcho
|-- example11
| |-- TestClientCommand
| |-- TestServerCommand
```

> Happy coding !