Multiplayer in Godot 4 in 3 minutes

A multiplayer system using Godot's Multiplayer Spawner and Multiplayer Synchronizer, where players can host and join through a peer-to-peer connection.
- Code -
Multiplayer Scene - pastebin.com/B...
Player - pastebin.com/s...
- Music Used -
- Hoogway - Orion
- Provided by Lofi Records
- Watch: • Hoogway - Orion
- Download/Stream: fanlink.to/Equ...

[@xX-DogSama-Xx]

actually insane how a 3 minute tutorial still had the time to hop into the documentation and explain what the functions do

[@mouseroot8053]

This was easy to follow, usually when it comes to multiplayer we go from hello world to complex networking and setting up authority and handling the logic of both the server and the client...this video feels like the next logical step from the hello world of multiplayer, Thanks. Also you can use Debug->Run mutliple instances and set it to 2 to open multiple instances of the game instead of having to run a whole other instance of godot.

[@Loethor]

Instead of opening with a second editor you can go to debug, there is an option to run multiple instances

[@marioroberti]

WAT......? Great tip!!!

[@MakeGamesToday]

Awesome, thanks for sharing this!

[@megascan]

thank

[@xRickeyTiex]

appreciate the tip !

[@Sadguy-l1r]

I was going to say the same thing

[@Peter-wl5xm]

Thanks for the small tips like, "to avoid controlling other player's character". It helps tremendously.

[@WendiZhou-v3b]

It's very helpful and it worked! Thank you. For tutorials like this, I really appreciate that you actually use text to remind us about what we are doing in the control panel. The difference in code are usually easy to find, while the errors(difference) in inspector are harder. Those text reminder really help me save some debugging time.

[@Divinxu]

Thank you very much, this was very helpful as an "only what's needed" barebones snippet for understanding what's necessary and what isn't.

[@pladselsker8340]

So godot multiplayer just works by synchronizing node states. Interesting! That was a great intro to multiplayer

[@widearchshark3981]

I mean, this guy deserves a hell of a load more subs! Great work

[@TheDhelirious]

I was about to comment the same lol, this video is stunning

[@lousyllamma986]

hippity hoppity your code is now my property

[@sunshinecoco12]

Thank you so much for this short, simple, yet usefull tutorial. I just could not get multiplayer to work at all before this, but now, it works basically perfectly.

[@formal_club]

great video, thank you so much! subbed :) ❤

[@oneyearcreative]

This is my favourite tutorial out of probably hundreds(or even thousands) of tutorials I have ever seen. Extremely concise, straight to the point, each step explained. Whole point explained on minimal working example and in 3 minutes. Insta subscribe.

[@emanuelmatos5228]

Amazing, not only demonstrated knowledge, skills, it demonstrated how quick and easy was to set up using Godot, thank you so much!!!!!!!! the best multiplayer tutorial I 've ever seen.

[@cent1111]

This is the most simple, but spectacular tutorial for multiplayer. Keep up the awesome work!

[@Wangak3]

Hi, I am impressed with your simple and intuitive tutorials. I'm Korean, so I apologize in advance for my poor English. I have a question. I've been searching for resources on multiplayer, but I haven't found anyone who has made tutorials as clean as yours, I was wondering how you get the information for your tutorials and make them! Because I want to know how to develop on my own without relying on tutorials.

[@simon_aviation]

Propably godot doumentation

[@dreemlan158]

Concise tutorials like this are amazing, great work.

[@ludozburg]

finally, everyone has been waiting for this tutorial. Very nice video!

[@causalguide]

Ah finally i found a tutorial

[@Engoneer]

out of all the tutorials that ive seen so far I want to also say this one is amazing

[@heckerhecker8246]

for some reason, it's not creating a second player-

[@nadvornikjiri]

Hey. Nice tutorial. However, I'm not able to get it working for 3 or more players (2 clients) - seems that the peer_connected signal is not getting triggered for the 2nd client that tries to connect, even though the create_client method gets the connection status 1. Was this designed to work with 1 client only or is it working for you? Thx for verification!

[@k.bradychristianson2543]

Finally, exactly what I needed. Appreciate the music as well.

[@KyleHarmieson]

Thanks to you, 16BitDev, I today made my very first multiplayer prototype. Thank you so much.

[@xpXThiefXqx]

this is awesome, I wish more tutorials were like this. subbed!

[@bvitytwrbq]

big thank! im only beginning the multiplayer discover and this certainly has been a nice start

[@hyxx7]

man make more video about how to make multiplayer games, and keep up

[@Khalirei]

So I haven't tested this and I know very little about networking in games, but I'll assume it works judging from the other comments. I have a question though, is there anyway for someone to abuse P2P connections with malware or viruses through the open ports for the game?

[@5minutemovies977]

In the Debug tab at the top of the screen, you can run several instances of the project without running several instances of Godot

[@theulfhednar2655]

Thank you very much for this. The task that I thought would be the hardest ended up being the easiest haha. Just gotta figure out some more things now.

[@pawpasta8990]

In the line with set_multiplayer_authority(name.to_int()) in the _enter_tree() function "name" returns as CharacterBody3D, not the name of the players ID , how do i fix this?

[@RandomStuf69]

really great, it worked instantly. Now im just a lil bit confused how to implement it to other levels

[@Taimisverycool]

Amazing tutorial first one to actually work

[@thechicken6430]

Just a problem I had with this, _add_player isn't a function

[@RafaelThofehrnCastro]

Moving from unity to godot after the recent scandal. I'm super impressed with the quality of the engine. Thanks for the tutorial. Is there a way to change multiplayer authority per synchronized node in the player? I would like the server to have full authority over a player (life, etc) except transform that is controlled by the client

[@pierre-yves4444]

Hello, I use Godot 4.2.1 and the player_scene.instantiate() in _add_player function throw me this error : Cannot call non-static function "instantiate()" on the class "PackedScene" directly. Make an instance instead. Any hints why ?

[@Gellogy]

you probably didnt drag the player scene into the packedscene to tell it what it was

[@SGI077]

or used "=" instead of ":" on the @export var player_scene: PackedScene

[@DaronFox]

@@SGI077 thank you for this comment haha i made that mistake

[@couchwow]

can you make a slightly extended version with passwords?

[@D0cez]

Hi, i need help, how to make "unique" camera in godot for every player?

[@igorigor3960]

how safe is this multiplayer code for players ?

[@Woooferz]

such a simple multiplayer tutorial, its great!

[@SilentRaven77]

Thank you so much. This was very helpful. ❤

[@Iglobruhka]

Thank you, it helped a lot,😁

[@_dimitrisbr]

so this will work if i have the game in different devices and i will just need to have them connected to the same network? and if yes, will it work with just hotspot on mobile devices?

[@Assem_DEV]

Does this code work remotely or on people connected to the same network?

[@naemnikdub]

You can make a video where you show the front-end of the character in 8 directions + character animations ?

[@16bitdev]

It's on my bucket list, I might do it in the future, for now I am just covering the basics of godot.

[@naemnikdub]

@16bitdev okey , fine video 👍

[@Ntheico]

the tutorial was great but when I got to the last step and an error popped up, it says" The multiplayer instance isn't currently active". Can someone pls help?

[@mr.condekua6141]

Why on earth you set the authority to the name of the Character? I mean, your functions that creates characters name the first one "1", and the second one something like "@1@1" that you convert to integer "277281" (just random numbers) and the set authoriy to it. You never get the ID of the peer, not even set authoty using this ID and still, this somehow works I dont get it

[@mr.condekua6141]

Found the solution peer_connected is a signal with a argument inside with is the ID of the peer, you connect ghat signal to the create plater function, and give that ID. Thats it

[@antoniosanchezcalderon1351]

did it exactly the same way and it doesn't work. the host spawns but the client screen shows nothing and doesn't have authority.

[@kyrocom]

Thank you for the tutorial! It's very helpful 👍

[@WCIIINoob]

thanks for this awesome tutorial! Can you have more than one multiplayer-spawner in an scene or just one, which has to handle a long auto-spawner-list? E.g. one spawner for player. Other for NPC-enemies, other for ressources, bullets, ...?

[@ammonggames2421]

When i trie to conect two computers it doesn't worked

[@Aurora_Audiox]

is it just local or online , like if the other play is in a different country?

[@OlivierPons]

I find this tutorial very good if you just want to copy-paste everything shown without asking questions... But I can't find a single tutorial that explains the developers' goals and how they implemented it to understand the overall functioning scheme instead of just copy-pasting from all the videos currently available on the internet about multiplayer with GODOT 4.

[@alexale5488]

That's so true ! Godot tutorials are either : too specific, deprecated or vague. As someone who's used raw sockets, I find raw sockets MUCH EASIER to work with.

[@bergsprekken123]

insanely nice tutorial, I could just watch pause write the code do the steps and voila :) I was wondering how would you add the world, for example if a tilemap was added and we had to sync the tilemap?

[@artmachine661]

Very nice! we need grown as community thanks!

[@Maltebyte2]

Works fine! Thanks man! just one of the player icons is like glitching up and down is that a network thing?

[@danicreator2030]

Does this only work on LAN or does it also work on separate devices?

[@Maltebyte2]

IT should work on all devices in your LAN.@@danicreator2030

[@rutexgreat3619]

1. Why you have to set up node name for peer id? I tried with custom int attr instead of name and it didnt work. 2. How sync working? it "spams" each tick with sync. attrs or only on change? could you show example how u do client prediction? i dont believe there is...

[@rc0d3]

Welcome to the nightmare of multiplayer kkkkkkkkkk, I'm thinking in changing from unity do godot, but I need onlyne support and a good basic stuff of movement

[@nakano15]

The way the multiplayer connection is done in the video will give error once a player connects. Is recommended to make a variant of AddPlayer which checks if "multiplayer.is_server()" is true before trying to spawn a player character, or else it will try creating a copy of the player object, while it already exists in the client.

[@ChatterDoesMatter]

yeah fr fr

[@sarahkellogg2594]

where did the player scene come from I need to know

[@Alikespan]

How do I add an working camera system?

[@jamessweet6962]

Would this be a good option for me to use if each of the players is different? they all have different models and abilities

[@jennyml9024]

thanks, that was a nice guide, maybe you do more multiplayer tutorials?

[@WillDel]

How to make the player who entered different from the host?

[@glores.games.studio]

Thank you very much 😊×1000000000000000 finally I will make a game that multiplayer I thought was impossible in Godot 😅

[@r4ko276]

Anyone have an idea, why my synchronizer, synchronizes the position of the second Player with the first Player right after i spawned the second Player??

[@Flavore-u2d]

I think you forgot to connect the "peer_connected" signal to the "_add_player" function, I had a similar problem as well. func _on_host_pressed(): peer.create_server(135) multiplayer.multiplayer_peer = peer multiplayer.peer_connected.connect(_add_player)

[@rakowumusic5143]

Local on my machine it works perfectly. But does it work also for other Devices? My peer to peer connection does not work when i run the game on two different devices sharing the same network. Not even with lan.

[@frayjais2942]

Hi, ran into this same issue. The only way around it is to: 1) port forward. This is probably the least desirable solution, because it means that if any players want to host a game, they must first manually forward a port. 2) Host a server. The issue with p2p connection is that ISP's hate it. It's a huge security risk and nowadays most ISP's just flat out wont allow it. You can host a server which will work, or also use a server to initiate a "p2p handshake" with NAT traversal. 3) use the godot steam API. Steam has a ton of built in functions (like NAT punch through) that will allow a p2p connection. Plus, steam also allows the p2p connection to fall back to a server if it gets interrupted for whatever reason (like a firewall closing the port). This isn't a godot exclusive issue mind you, this is just ISP's upgrading their security protocols to combat the rise in hackers. Hope this helps!

[@rakowumusic5143]

​@@frayjais2942Thank your for you answer. I figured out that we can do it with hamachi. But the steam approach is interesting, so you have some documentation or a video? If the game is fun I want to host it on a root server but without risks

[@moldy9041]

@@rakowumusic5143 did the hamachi thing work without any change to the code?

[@Lachrymogenic]

couldnt watch the tutorial music made me cry

[@ClinicalEX]

1:07 , what happens if I use a closed port?

[@ProdejayProductions]

When i click host it freezes my client not responding any hints why?Do we have to port forward or anything when setting it up to run off our computers ip address

[@16bitdev]

yes you have to port forward, or else the client won't be able to join the server you are hosting on, if you have a router just add a port to it.

[@memes_gbc674]

@@16bitdev you only need to port forward if you're hosting a server that clients will connect to outside of your wifi, otherwise you might just have to disable your computer's firewall to allow incoming connections

[@freakydayz7211]

Fanatics Video 10/10 :)

[@whiteshampoodev]

Thank you.

[@laporteusedegateaux]

Thanks a lot! 😊

[@almightynoob1631]

as soon as i press host in the game godot immediately crashes. Doesn't show any errors, just stops working and i have to alt f4

[@almightynoob1631]

changing scene.instantiate() to instantiate() has taken care of the crashing but once i press the host button, after that everytime i press space the button gets clicked for som reason

[@16bitdev]

thats interesting! I think it's a bit buggy for now, I don't know how I can help you, I guess keep tinkering around to make it work, (I do that all the time), but thanks for the insight!

[@almightynoob1631]

@@16bitdev and because of this I cannot detect collisions and deduct player health

[@16bitdev]

Hopefully they will improve this, at least we know how to implement it, we just have to wait for the update

[@almightynoob1631]

​@@16bitdevokay so I have fixed up almost everything. Only one problem remains. I have added port 9999 to my router's settings page for port forwarding and it is what I use in the game as well. But people that are not connected to my local network cannot join. I have tried entering my IP from whatismyip but doesn't work. Am I missing something?

[@Wischmopp]

Hi! Thanks for the great tutorial. I would like to ask a question. How does the spawning using the multiplayerSpawner node work? In my Game, both players have a Button in their UI, which they can press to spawn an object at their global_mouse_position and left click to place the Object. However, I'm having trouble spawning, and sychronizing the Object across the Server and both Clients. I have a MultiplayerSpawner Node in the Main Scene, which contains the Players and the Object I want to spawn. In the Object Scene itself, is a MultiplayerSynchcronizer, which synchonizes the Position of the Object. How do I spawn the Object in the Code, that Both clients and the server receive the Object? Edit: Another thing i've notices is that if an Object with the Same exact name exist in both of the Clients scene trees (Object(3) for example), it synchonizes correctly, but when one player spawns an objects, it doesnt spawn in the other clients scene tree.

[@16bitdev]

Multiplayer Spawner just replicates nodes from authority to other peers, which means only person(authority) can actually spawn objects, but the client can request custom spawns to authority and the authority will spawn that object for the client, giving an illusion as if client has spawned that object, so for UI button if its authority it will spawn, else it will request for a spawn, Read the doc about custom spawns in MultiplayerSpawner.

[@bergsprekken123]

so this is how it would work with a tilemap if the players has a button to change a tile on the tilemap? the autority is the one doing it?@@16bitdev

[@Gyozamang]

This works well over my LAN. How do I make it so it's a *very simple* way to do over the internet? Like how do I make it so it uses a UPNP port and connect to my ip address as a peer connection?

[@corezyx]

you can make a video explaining CPR calls. to send and receive variables manually. very good video.

[@bruri7522]

Does this work on a project that uses dedicated server, rpc?

[@Kaspigo]

works only on the same pc as host

[@lukeaaron6946]

Great video!

[@Duxkd]

pls help when i run the game in 2 different laptops the multiplayer doesn't work but when i run 2 windows in 1 laptop it does work how can i fix it ? (can you make a new updated video about the multiplayer and it cover everything pls) if you cant just replay to the message

[@n_d_cisive]

You just earned a sub

[@B-mo0000]

❤

[@ForgeInDark]

pls help i have error Cannot call method 'instantiate' on a null value.

[@16bitdev]

did you drop the player scene in the export variable? if the variable is empty then it throws this error

[@ForgeInDark]

@@16bitdev I have solved this problem, thank you

[@ForgeInDark]

@@16bitdev but there is a new problem one that when you click connect nothing happens, does it need to be done with one local network?

[@tcreft2857]

mas e para pc com celular? vocé sabe como faz o cross plataform?

[@ahmadsaerozi6688]

How to make if player instantiate object (bullet) other player can see the object

[@ahmadsaerozi6688]

Thanks, its works

[@psycho_ocelot]

Very nice tutorial. Does this work on two different devices and connections even if the client is ran on localhost?

[@lutherschultz4725]

how does multiplayer spawner change the name of the spawned node to the id of the peer? does it just do this automatically?

[@_1mrscool11_9]

func addPlayer(id=1): var player = player_tscn.instantiate() player.name = str(id)

[@GerivaldoDev]

hi bro i'm from brazil: "oi ao traduzir essa frase eu estou pedindo para fazer videos em portugues o Brasil te ama"

[@user-uj1cr1qg6k]

One question, can it work online?

[@robertmitri2720]

Does it use some kind of bypass to port forwarding ?

[@16bitdev]

That's a great question, I mean you can bypass port forwarding by using VPN, I don't know how Godot handles with bypassing. I am not sure.

[@zeanegame1806]

Can this work on 3D too?

[@letsjailbreak]

Great tutorial @16BitDev. Thank you! I tried this same method in 3D and I can get the host and client to connect. The host appears to work fine. But when the client connects, it seems to fly into the air and the host sees a third player, which might be a weird de sync. Any ideas you can throw my way?

[@PikaDevs]

Collision issues?

[@letsjailbreak]

@@PikaDevs Thanks for the reply. I ended up figuring it out. It was a mixture of a near instant desync and the client spawning two of its own characters and so the collision acted funny and sent one flying up.

[@PikaDevs]

@@letsjailbreak ah, glad to see you got it working

[@Top_Drop]

Го теперь на Godot 3? Но я попробую сделать это на Godot 3 вместо Godot 4!!!!?❤❤❤

[@Marco-34235]

AMAZING!!!

[@m.gredemptor2610]

Nice Tutorial, but your example is a bit hard to follow for a first experimental work, can you make one with just a Synchronized “Text Edit” Child Node, so that both the host and client can edit the text like a multiplayer notepad.

[@16bitdev]

That's a good idea, I will make a chatroom in future, also I will try to simplify it 👍

[@fletchthebirb]

What's the difference between call_deferred("add_child",player) and just add_child(player)?

[@16bitdev]

deferred waits for the idle frame, then it executes, if there are many actions going on there is a possibility that it will skip the normal call "add_child" which can create a bug so we wait for the scene when its idle even for a single frame, i hope i make any sense.

[@marioroberti]

This is fucking genius. Thank you!!!!

[@SudoStudioDev]

I never expected that Godot Multiplayer need just 3 mn, hahha

[@Nass-prod]

So this needs port forwarding right?

[@16bitdev]

If you're hosting a server on your own machine and want non-LAN clients to connect to it, you'll probably have to forward the server port on your router. Use both UDP/TCP ports. There is documentation for high-level multiplayer in godot, which will give you more details.

[@Lumii-official]

full project file? pleese