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godot-bricks-mp

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example for Godot Multiplayer in the browser with websockets

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# Godot Bricks Multiplayer

For our `winterplenum` at inovex, i created this small example for a dedicated Godot Multiplayer server in the browser with websockets.

There are 3 projects

* The main game at the root of this repository
* The [realtime-server](https://github.com/cdreier/godot-bricks-mp/tree/master/realtime-server), a second Godot project for the dedicated websocket server
* The [brickserver](https://github.com/cdreier/godot-bricks-mp/tree/master/brickserver), written in go for a lightweight persistence and event storage

This go server uses a [boltdb](https://github.com/boltdb/bolt) via [bolthold](https://github.com/timshannon/bolthold) - to persist the current world and additionally persists all events in a second db, so you can replay all the brick-events and watch some timelaps :)

![timelaps](https://github.com/cdreier/godot-bricks-mp/blob/master/demo_gifs/plenum-demo.gif?raw=true)

## Code!

Most of the network code are in the [Connection](https://github.com/cdreier/godot-bricks-mp/blob/master/Connection.gd) [files](https://github.com/cdreier/godot-bricks-mp/blob/master/realtime-server/Connection.gd). The important part is, to set the websocket client and server as network_peer to get everything working with Godots [high level multiplayer API](https://docs.godotengine.org/en/stable/tutorials/networking/high_level_multiplayer.html)

After learning in [DinoPoker](https://github.com/cdreier/DinoPoker) that a position sync on every frame is working and looks smooth (but kills a small server with a few players), i tested to interpolte the positions [with a timer only 10 times per second](https://github.com/cdreier/godot-bricks-mp/blob/master/Player.gd#L24). Perhaps this can be done a bit more clever?

## Controls

WASD  - movement  
E     - drop a brick  
Q     - toggle camera  
SPACE - jump  
Click - delete brick  
Colorpicker... pick colors

![basics](https://github.com/cdreier/godot-bricks-mp/blob/master/demo_gifs/godot-bricks-basics.gif?raw=true)

With the on/off toggle on the bottom right corner, you can toggle a grid movement where you only move in half-brick steps, so you can better control the position and build acutally something that is more than a big colored pile ;)

## Offline

to just test it, there is an offline, non-persistent version, starting when no servers are found to communicate with.

## Deployment

i put together a simple docker-compose file ( also found in https://github.com/cdreier/godot-bricks-mp/tree/master/docker )

just do a HTML5 export into the `docker/export` folder and run `docker-compose up`

after everything is up, you can test it at http://localhost:8000/?server=ws://localhost:8001

```yaml
version: "3.2"

services:
  server:
    image: drailing/godot-bricks-mp-rt:latest
    ports:
      - 8001:5000
    networks:
      - storage-net
    environment:
      - BRICK_SERVER=http://brickserver:8080

brickserver:
    image: drailing/godot-bricks-mp-brickserver:latest
    volumes:
      - ./data:/app/data
    networks:
      - storage-net

web:
    image: drailing/static_file_server:latest
    ports:
      - 8000:80
    volumes:
      - ./export:/www

networks:
  storage-net:

```

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