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dexied edited this page Jul 27, 2026 · 13 revisions

Welcome to the ObjectReplicatorDemo wiki! If the images are not displayed correctly, open them in a new tab!

Installing the plugin

  1. Download the ObjectReplicator plugin in FAB and then enable it in your project.
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  1. If you downloaded the plugin from another source, place it in your project folder. The plugin path will look like this: YourProject/Plugins/ObjectReplicator

Introduction

With this plugin you can replicate UObject inside a component. The plugin consists of an object and a component:

  • ReplicatedObject - This is a replicated object, within which any variables can also be replicated. When creating this object, try to specify the owner as the same Actor in which the ReplicatedObjectContainer component is located.

  • ReplicatedObjectContainer - This is a component that contains an array of replicated objects. This component already has a set of functions for working with an array, with automatic registration of objects for replication.

You can use a replicated object for different systems, for example, to create inventory or various effects (buffs, debuffs).

Example

Now, as an example, we will create a simple inventory system.

  1. Create a new blueprint that inherits from ReplicatedObject. I'll call it BP_ItemBase
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  1. Open this blueprint and add two variables ItemName and ItemCount
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  1. Make the ItemCount variable replicated as RepNotify
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  1. Add the OnItemCountUpdated delegate
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  1. Convert the OnRep_ItemCount function to an Event and call this delegate there.
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  1. For convenience, add several functions to change the ItemCount variable.
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  1. Also add the ItemTexture variable!
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  1. Create two child blueprints from BP_ItemBase. I'll call them BP_AppleItem and BP_WoodItem
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  1. Open these blueprints and set some values ​​there
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Adding a ReplicatedObjectContainer omponent to your character.

  1. Open your character and add a **ReplicatedObjectContainer component to it
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  1. Add some test functions inside your character
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Create widgets

  1. Create two widgets, name them: W_Item, W_PlayerHUD
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  1. Open B_Item. Add widget components in the following order.

  • Border

    • HorizontalBox
      • SizeBox
        • Image (ItemTexture)
      • Text (ItemName)
      • Text (ItemCount)
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  1. Add the BP_ItemBase variable to W_Item and read data from it on EventConstruct. Also enable ExposeOnSpawn and InstanceEditable in the BP_ItemBase variable settings.
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  1. Open the W_PlayerHUD widget and add the VerticalBox there.
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  1. Open the Graph in this widget and bind to the ReplicatedObjectContainer component
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  1. All that's left is to create the W_PlayerHUD inside our character after initialization. Open your Character. Create a widget after Possessed event. The widget must be created on the client side.
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Testing

  1. Run in PlayAsClient mode
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  1. Press buttons 1, 2, 3 to check that items are being added and everything is replicating correctly!
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Everything works!

Additionally

  1. All functions for adding and removing items from a container can be found here.
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  1. Initialization of an object must occur before adding it to a container, since after adding it to a container, this object will be duplicated and the reference to it will change.
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  1. You can get the correct reference to the object after adding it to the container like this:
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