# Unreal Engine Plugin

# Pre-requisites

Unreal Engine 4.27 and 5.0 are supported, i.e. one of them should be installed via the Epic Games Launcher.

# Supported OS

  • Windows: Make sure you use Visual Studio 2019 or later.(2022) it's already coded, if any compiling errors occur, add these line to top of c++ file:
#pragma warning(disable:4583)
#pragma warning(disable:4582)
  • macOS: Make sure you use Xcode 13.2.1. If you are building the C++ SDK bindings and the corresponding binaries from Rust for Unreal Engine 5, then make sure to set a deployment target for the Cronos Play C++ SDK (opens new window):
cargo build ..
// You may check the deployment target using `otool`:
otool -l <resulting binary>.dylib
// where The `LC_BUILD_VERSION/minos` should be `10.15`.

# Start building!

# How to compile

To compile the existing library, follow the steps below:

  1. Install unreal engine 4.27
  2. Clone the following repository
    git clone https://github.com/cronos-labs/play-unreal-plugin
  3. open CronosPlaySdk/CronosPlaySdk.uproject with the unreal editor

# How to install

To install, run the following commands:

  1. Run the following commands to copy dynamic libraries for ue4 editor
    git clone https://github.com/cronos-labs/play-unreal-plugin
    cd CronosPlaySdk 
    `copydll.sh` or `copydll.bat`
    mkdir Plugins
    copy ./CronosPlaySdk/Plugins/CronosPlayUnreal yourProjectFolder/Plugins/
    cd yourProjectFolder/Plugins/
    `copydll.sh` or `copydll.bat`

# How to start coding

  1. click add blueprint in the ue4 menu
  2. inherit DefiWalletCoreActor or PlayCppSdkActor
  3. drag & drop your class to the scene
  4. category is CronosPlayUnreal
  5. the api in ..Blueprint.h is stateless, and can be called anywhere in the blueprint

# Documentation for UE function and blueprint

Users can also download the CronosPlaySdkHelp (opens new window) and check the documentation for ue function and blueprint document.

# Unreal Engine sample code

This section contains a sample project that uses the Cronos Play Unreal SDK plugin. For more information, please see the Cronos Play Unreal SDK plugin repository (opens new window).

# Pre-requisites

Visual Studo 2019 or later (2022) or XCODE 13.2.1 Unreal Engine 4.27 and 5.0 are supported, i.e. one of them should be installed via the Epic Games Launcher.

# Installation

To install, run the following commands:


  1. Run the following commands
    git clone https://github.com/cronos-labs/play-unreal-demo
    cd play-unreal-demo/CronosPlayUnrealDemo/
  2. CronosPlayUnrealDeemo.project with the unreal editor


  1. Run the following commands
    git submodule update --init --recursive`
    cd CronosPlayUnrealDemo`
  2. CronosPlayUnrealDemo.projectwith the unreal editor

# Documentation generation

Currently, this is supported on Windows via KantanDocGen Plugin (opens new window):

  1. Run getdoc.sh inside Git shell (opens new window)
  2. Enable KantanDocGenPlugin in plugins
  3. Open the plugin dialog: File -> KantanDocGen
  4. Navigate in this dialog: Class Search -> Native Module -> Click + -> CronosPlayUnreal
  5. Click on "Generate Docs"
    • location: CronosPlaySdk/Saved/KantanDocGen/

# More information for Cronos Play

If you are interested to build on Cronos, please visit Cronos Play (opens new window) or fill this Contact Form (opens new window) for more information.