godot-tcp-example

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GodotEngine TCP Example

###TODO

• More datatypes to read/write

Simple example scene I made while playing around trying to make godot talk to a TCP server ( I used Iojs as a TCP server).

To run this you need:

• GodotEngine;
• Node.Js ( or IO.Js)

From Godot to Server:

• Download or clone this repo
• Open the project inside godot_tcp in GodotEngine, or run the /build/godot_tcp.exe if you use windows
• Change host in node/server.js to match your IP (i.e. 192.168.1.6),
• Open a terminal inside the node folder and run server.js (in nodejs: node server.js, in io.js: iojs server.js),
• Write the host and the port, like this host:port,
• Click connect in the godot_tcp scene,
• Write something in the textEdit,
• Press Send Data,
• The string you wrote in godot_tcp should appear in the terminal, like this: Read: <your_string>

You can also make it reply to some hardcoded strings, like bye and who am I?

So far I can read the data I send to node, and I can send back the same data. ~~I currently have problems understanding the first 4 bytes of every TCP packet, so I can't send packets from node to godot without knowing those 4 bytes beforehand.~~

I found out what the first 4 bytes are: the length of the packet, without the first 4 bytes. So in a packet with 28bytes, the first 4bytes read '24', which is (28-4=24) the length of the packet! This allows me to send packets from node to godot.

References:

• https://github.com/okamstudio/godot/wiki/binary_Serialization
• https://nodejs.org/api/buffer.html
• https://nodejs.org/api/net.html