I want to restrict some components or features to the other clients that has joined my room. Is there a way to do that?
Hi Saad!
To restrict components or features to specific clients in a collaborative room with Needle Engine, you can utilize the concept of ownership. Only the client who has ownership of a component can modify or interact with it. Here’s a brief outline of how to implement this:
-
Ownership Model: Use the
OwnershipModelclass to manage ownership of the components. Each component can check if it has ownership and act accordingly. -
Request Ownership: Implement functionality for clients to request ownership when they join the room. This can be done using methods in
OwnershipModel. -
Conditional Access: In your components, conditionally allow functionality based on ownership checks. If a client does not have ownership, prevent them from interacting with the component.
-
Networking Events: Listen for networking events such as
RoomEvents.UserJoinedRoomandRoomEvents.UserLeftRoomto manage ownership dynamically based on the participants in the room.
Here is an example code snippet:
import { Behaviour, OwnershipModel } from "@needle-tools/engine";
class RestrictedComponent extends Behaviour {
private ownership: OwnershipModel;
constructor() {
super();
this.ownership = new OwnershipModel(this.context.connection, this.guid);
}
start() {
this.ownership.updateIsOwned();
}
onUserJoin(userId: string) {
if (this.ownership.hasOwnership) {
// Allow client to access the component features
} else {
// Disable or restrict features
}
}
}
This approach allows you to control which users can interact with specific components based on ownership, effectively restricting features as requested.
For a deeper dive into networking and ownership functionality, please refer to the documentation on Needle Engine Networking .
Feel free to ask if you need further information or have additional questions!
3 replies left
thread_i1UsbqV2kd7o7k6D7ZwYmlyt
Reply to this message to continue the conversation
I want to restrict some clients not all. How can I differentiate or know the one I want has joined the room or someone else has?
I’m sorry, I couldn’t find a response. 
still thinking?
Hi Saad!
To differentiate between clients and restrict certain components or features to specific users in a collaborative room, you can utilize the user ID or connection ID provided by the context.connection. Here’s a brief outline of how you can accomplish this:
-
Track Users in the Room: Use the
RoomEvents.UserJoinedRoomevent to keep track of users who join your room. You can maintain a list or a Map of user IDs and their permissions. -
Identify Users: When a user joins the room, you can check their identity using the
context.connection.connectionIdor any custom user identifier. This allows you to differentiate which user has specific permissions. -
Conditional Feature Access: In your components or behaviours, check the user’s ID against your defined criteria to conditionally enable or disable features.
Here is an example of how you could implement this in code:
import { Behaviour, RoomEvents } from "@needle-tools/engine";
class PermissionsManager extends Behaviour {
private allowedUsers: Set<string>;
constructor() {
super();
this.allowedUsers = new Set(["userId1", "userId2"]); // Replace with actual userIds
this.context.connection.beginListen(RoomEvents.UserJoinedRoom, this.onUserJoined);
}
onUserJoined(evt: { userId: string }) {
console.log(`${evt.userId} joined the room.`);
// Check if this user has permission to access specific features
if (this.allowedUsers.has(evt.userId)) {
// Give access to specific features
this.grantAccess(evt.userId);
} else {
// Restrict access
this.restrictAccess(evt.userId);
}
}
private grantAccess(userId: string) {
console.log(`Access granted to ${userId}`);
// Enable features for this user
}
private restrictAccess(userId: string) {
console.log(`Access restricted for ${userId}`);
// Disable features for this user
}
}
This way, you can easily check each user’s identity and manage access to features depending on their privileges.
If you need more specific implementations or have additional questions, feel free to ask!
3 replies left
thread_i1UsbqV2kd7o7k6D7ZwYmlyt
Reply to this message to continue the conversation
Do you have a list of components and what kind of restriction you’re looking for? Do you have a user system in your app where people login? You need a way to identify a visitor - alternative there is a view only mode that you can share for people to join the room, everyone who joins with the view only room id can be detected by the networking system and you can apply restrictions if you have custom component and needle engine components should already respect this state
And the syncedroom component can create a button or you call the method yourself (see links above) to get the view only url to share with restricted users
I was making a functionality where I can click on an object and make changes to its transform while others (who should be restricted) can only click on the object for a different functionality. Is viewing only gives no access whatsoever? or is it partial in a sense that i can modify components visibility to those who joined with viewing only link?
I don’t have a sign-in system placed yet but I’ll use that later to give access to particular user.
View Only is just a flag but some core components don’t allow changes anymore. E.g. view only users can not use DragControls to move an object around but can still click objects and you still receive those clicks etc, just the allowEditing flag is set to false on context.connection which you can use in your code to change behaviour or available options in your code (e.g. show the transform gizmo only if allowEditing is true)
This helps, I can use this flag to control the components accessibility.
This topic was automatically closed 13 days after the last reply. New replies are no longer allowed.