Question Howto add newly created prefabs to a running game ?

hi all, how are you ?

The thing is -> I want to write/play a game (netcode game if that is interresting for this question) and while i play with my friends, I or a friend has created a new mesh , and we want it to appear in our scene while we are playing ?

We dont want to stop the game, write new code to add the mesh/gameobject and then start the game again ?

How is this possible ?

Thanks for answers

flo

 

i mean , spawning a gameobject from harddisk (with path) , while game is running

 

hi @Mirceal ,

thanks for your answer, but the addressable states "Once an asset (e.g. a prefab) is marked "addressable", it generates an address" . That seemed to mean, the mesh/gameobject/prefab is needed while building/running the game.

I need something like
GameObject instance = Instantiate(Resources.Load("myMeshGameObject", typeof(GameObject))) as GameObject;

but here the thing is, the myMeshGameObject needs also be in the Resources folder while building/running.

I want to add it later, while the game is still running, i want to add new meshgameobjects ?

Hope i could explain it a little bit better

 

found https://docs.unity3d.com/ScriptReference/AssetBundle.html

var uwr = UnityWebRequestAssetBundle.GetAssetBundle("https://myserver/myBundle.unity3d");
yield return uwr.SendWebRequest();

// Get an asset from the bundle and instantiate it.
AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(uwr);
var loadAsset = bundle.LoadAssetAsync<GameObject>("Assets/Players/MainPlayer.prefab");
yield return loadAsset;

Instantiate(loadAsset.asset);

But here it says: Note that bundles are not compatible between platforms

I am coding a networking (with netcode) game, so it should run on windows and android and others too, so hmmm ? Is there something else ? When i can build a asset WITH a game, that is compatible on different platforms, why can i not only build a asset, that is compatible with all platforms ?

 

assetbundles looks good, also i can set the build target platform (windows, android, etc) https://docs.unity3d.com/ScriptReference/BuildPipeline.BuildAssetBundle.html with targetPlatform. Also i can run these build from script.

But what i not can see, how do i load on the network-server (netcode in hosting mode) the right assetbundle for the right platform ? When lets say, a windows-machine started in host+client mode, and an android devices connects with client-mode to the game. How to spawn the right assetbundle on the right platform ?

 

but how do i get the platforms of the connected clients ? There is NetworkManager.Singleton.ConnectedClients which returns id, but no platform ?

On the server side i could say something like:

if(isServer) {
GET NetworkManager.Singleton.ConnectedClients
FOREACH( client-ID ) sendClientRPC( GET platform ) {
?? what now ?? simply run
FOREACH( client-platform ) {
IF (client-platform == ANDROID) {
var uwr = UnityWebRequestAssetBundle.GetAssetBundle("https://myserver/myBundle.unity3d");
yield return uwr.SendWebRequest();

// Get an asset from the bundle and instantiate it.
AssetBundle bundle = DownloadHandlerAssetBundle.GetContent(uwr);
var loadAsset = bundle.LoadAssetAsync<GameObject>("Assets/Players/MainPlayer.prefab");
yield return loadAsset;

Instantiate(loadAsset.asset);
}
IF(client-platform == WINDOWS) {
LOAD windows-asset-bundle ...
}
}

Would that work ? Or is there a way to request/GET the connected client platforms on the server side to load/instantiate the right-platform-assetbundle ?

thx for help

 

the netcode spawn means that all networkObjects got the same networkObjectId, so that the same gameobject on every client e.g. translates-to-x.

So every network-gameobject needs to update/set the networkObjectId to the same value on every client ( per RPC ? ) then it could perhaps work ,or?

 

Hey hate to hijack the thread but a similar issue perhaps. I have been searching around trying to figure this out... I basically want to create objects based on a string of characters at runtime and assign a PNG to each object (PNGs dropped into the Assets folder). Make it a Player and move it around. But it sounds like this isn't something I can do easily. Was hoping it would be as simple as "render sprite(body parts) on screen at (X,Y) from Assets/back.png ... legs.png" but... I would still need to go down this AssetBundle route because of the phone vs PC build?
I have figured out how to do it in the editor mode, but want to build players based on my pre-determined body part string.

Any help from anyone is appreciated!

 

@Junami
perhaps this is interresting for you https://github.com/godotengine/godot/pull/52541