A better ENet module for high performance multiplayer games with godot

About

The benet module for Godot is a fork of NetworkedMultiplayerPacketPeer (although it stays compatible) to allow access to multiple channels and the ability to run multiple clients/servers in the same scene.

The module is composed by two parts:

  • ENetPacketPeer: The fork of NetworkedMultiplayerPacketPeer

    • create_server: Add parameter to specify max channels (default 1)
    • create_client: Add parameter to specify max channels (default 1)
    • put_packet_channel: New method, allow to put a packet in the specified channel
    • send (_unreliable, _ordered) allow to send to specific client in reliable, unreliable, ordered way whlie selecting the channel
    • broadcast (_unreliable, _ordered) allow to broadcast a packet in a reliable, unreliable, ordered way while selecting the channel

  • ENetNode: Act like SceneTree:

    • Poll on idle/fixed time (must be in tree to work!)
    • Emit signals on idle/fixed time (must be in tree to work!)
    • Emit additional server_packet and client_packet signals when receiving packets
    • Allow kicking clients by unique id.
    • Will hopefully support RPC in the future

Installation

Being a module you will need to recompile godot from source. To do that:

  1. Clone the godot engine repository
  2. Copy the benet folder from this repository into the godot modules folder
  3. Recompile godot (see http://docs.godotengine.org/en/latest/reference/_compiling.html )

Usage

For usage examples please refer to the project in the demo folder.

The methods should be self explainatory.

Disclaimer

THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Owner
Fabio Alessandrelli
Computer scientist, traveller, life hacker.
Fabio Alessandrelli
https://github.com/Faless/godot-enet-better
Comments
  • ENetPacketPeer and ENetNode locks the node in which it is or is called

    ENetPacketPeer and ENetNode locks the node in which it is or is called

    I'm having another problem, I can not do this:

    Var enetNode = ENetNode.new ()

    or

    Var peer = ENetPacketPeer.new ()

    When testo in the editor works, but when I compile (tested X11 64 and 32, and android) does not work, it hangs the script in which one of these lines is, whether in singleton script or not. Specifically I tested putting the line on a button or calling some variant of a global script in the button script, and it happens to hang, the button is like it did nothing.

  • Compiling error with Godot 2.1.3

    Compiling error with Godot 2.1.3

    I get the following error when trying to compile the 2.1 branch with Godot 2.1.3:

    modules\benet\enet\godot.cpp(111): error C2039: 'set_blocking_mode': is not a member of 'PacketPeerUDP'

    If I remove that line, instead of tinkering with the Godot core code, I get the following error trying to compile:

    modules\benet\enet_packet_peer.cpp(622): error C2440: '=': cannot convert from 'void' to 'int'

  • Benet and Scenetree.

    Benet and Scenetree.

    From the looks of it, the channels are merged into one buffer.

    I presume I would have to make changes to Scenetree to allow different channels for personal uses in order to use godot high level networking

    https://godotengine.org/article/godots-new-high-level-networking-preview

    Otherwise, I would have to roll my own networking solution.

  • About create_server and create_client

    About create_server and create_client

    I am confused with the module, you create a server with ip that is taken from the machine ip, then on the client you have the option to put the address, which is to create the client at that address, right, but it arrives in the part to connect , And you connect it to the variable "host", but "host" is in your machine, not able to view it between two or more machines, I will have to create one server, and the other two clients, But how would it connect it to the server, if the "host" gets the ip of the machine?

    If I want to do a P2P, can I create multiple servers and connect to each other and just send broadcast between them?

  • Building against master with mono

    Building against master with mono

    Hi,

    Is it meant to be possible to build against godot master with mono? Once I attempt to compile (post generating glue code) I run into errors: (CoreCompile target) -> ObjectType/ENetNode.cs(63,55): error CS1003: Syntax error, ',' expected ObjectType/ENetNode.cs(63,56): error CS1003: Syntax error, ',' expected ObjectType/ENetNode.cs(63,70): error CS1001: Identifier expected ObjectType/ENetPacketPeer.cs(78,38): error CS1003: Syntax error, ',' expected ObjectType/ENetPacketPeer.cs(78,39): error CS1002: ; expected ObjectType/ENetPacketPeer.cs(78,55): error CS1003: Syntax error, ',' expected ObjectType/ENetPacketPeer.cs(78,56): error CS1003: Syntax error, ',' expected ObjectType/ENetPacketPeer.cs(78,69): error CS1001: Identifier expected ObjectType/ENetPacketPeer.cs(78,82): error CS1003: Syntax error, ',' expected ObjectType/ENetPacketPeer.cs(78,83): error CS1003: Syntax error, ',' expected ObjectType/ENetPacketPeer.cs(78,86): error CS1001: Identifier expected ObjectType/ENetPacketPeer.cs(80,120): error CS1525: Invalid expression term 'int'

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