Creating network connections with Godot is simple — as long as you have the other party’s IP address, and there’s no NAT gateway involved. Unfortunately, that’s exactly the problem in most cases. You don’t know the other party’s IP, and these days, just about everyone is behind a combination wifi router/gateway/firewall with NAT.
Conceptually, NAT hole-punching is pretty simple, and this video explains how it’s done with just netcat.
In a nutshell:
listen on a particular port (e.g. 50001)
nc -u -l 50001
echo ‘hello’ | nc -u ipaddr 50001
echo ‘hole punch’ | nc -u -p 50001 ipaddr 50002
third party exchanges ip addresses
Putting it all together, player A (hosting a game) would require the game to connect to the directory server.
The directory server would list the game as something a player can now connect to.
player B (client who wants to join) will tell the directory service that it wants to connect, and will send its info
The directory server forwards the information to player A (host), player A will then send a packet to player B, and respond to the directory server
The directory server will then tell player B to go ahead and connect to player A.
Player B should be able to punch through to player A
With Godot, the connections from client to host would use ENetMultiplayerPeer.create_client(), which can specify the local port.
Godot Engine is an open-source game engine. With the 4.0 release on the horizon, it’ll gain quite a bit of attention. And it’s an engine worth keeping an eye on. Internet Gaming. Serious business. Game development is serious business. The global gaming market size was 203 billion USD in 2020 (per fortunebusinessinsights). It is predicted …
Hugo-Dz created Super Godot Galaxy: https://github.com/Hugo-Dz/super-godot-galaxy, which he announced in this Reddit post. It uses the 3D Starter Kit from Kenney and shows how to achieve the effect of applying gravity toward the center of a small spherical planet.
It’s been a while, but it was worth the wait. The latest version of the Inventory System is now available, with a long list of features, improvements, fixes, and documentation. This time the focus is on multiplayer. Let’s cover the features first: Bug fixes:
Creating a UDP peer-to-peer connection
Creating network connections with Godot is simple — as long as you have the other party’s IP address, and there’s no NAT gateway involved. Unfortunately, that’s exactly the problem in most cases. You don’t know the other party’s IP, and these days, just about everyone is behind a combination wifi router/gateway/firewall with NAT.
Conceptually, NAT hole-punching is pretty simple, and this video explains how it’s done with just netcat.
In a nutshell:
Putting it all together, player A (hosting a game) would require the game to connect to the directory server.
With Godot, the connections from client to host would use ENetMultiplayerPeer.create_client(), which can specify the local port.
Here’s an older example of a signaling server: https://github.com/Faless/gd-webrtc-signalling/tree/master
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Godot Engine is an open-source game engine. With the 4.0 release on the horizon, it’ll gain quite a bit of attention. And it’s an engine worth keeping an eye on. Internet Gaming. Serious business. Game development is serious business. The global gaming market size was 203 billion USD in 2020 (per fortunebusinessinsights). It is predicted …
Super Godot Galaxy Concept
Hugo-Dz created Super Godot Galaxy: https://github.com/Hugo-Dz/super-godot-galaxy, which he announced in this Reddit post. It uses the 3D Starter Kit from Kenney and shows how to achieve the effect of applying gravity toward the center of a small spherical planet.
2D Fog Effect Shader Tutorial
The shader used in the tutorial: https://godotshaders.com/shader/2d-fog-overlay-2/
Inventory System v1.13 available
It’s been a while, but it was worth the wait. The latest version of the Inventory System is now available, with a long list of features, improvements, fixes, and documentation. This time the focus is on multiplayer. Let’s cover the features first: Bug fixes: