unitypluginxcodetemplate's Introduction

Unity Native Plugin Example for iOS & macOS using Swift

Unity supports native plugin, which are libraries of native code written in Swift.
Native plugin make possible for code written in C# to call functions from these libraries.
Check this document for detailed Native Plugin creation instructions.

Build Swift Libraries

Check Makefile for command details.

Build Framework for iOS

$ make framework

This should result in SwiftPmPlugin.framework being generated in Build.
Copy the built framework into your Unity project's Assets/Plugins/iOS.
Enable Add To Embedded Binaries in the Unity Inspector of SwiftPmPlugin.framework.

Build Bundle for macOS

$ make bundle

This should result in SwiftPmPlugin.bundle being generated in Build.
Copy the built bundle into your Unity project's Assets/Plugins/macOS.
Need to restart unity to load the new bundle.

Swift Interface Example for Unity

Check UnityInterface.swift for details.

@_cdecl("swiftPmPlugin_toNumber")
public func swiftPmPlugin_toNumber(_ stringPtr: UnsafePointer<CChar>?) -> Int64 {
    let str = String(cString: stringPtr!)
    return Int64(Int(str) ?? 0)
}

Call Swift Function in C#

Check SwiftPmPlugin.cs for details.

[DllImport(libName)]
private static extern long swiftPmPlugin_toNumber(string stringNumber);

public static long ToNumber(string stringNumber)
{
    return swiftPmPlugin_toNumber(stringNumber);
}

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unitypluginxcodetemplate's Issues

.bundle not working with latest xcode 15.3 and Unity 2023.2

After updating to Xcode 15.3 and Unity 2023.2, I encountered an issue where the build process completes successfully, but Unity is unable to locate the entry point from the bundle and DLL, if i create bundle using the make, or Xcode build.

Steps to Reproduce

Update Xcode to version 15.3.
Update Unity to version 2023.2.
run make bundle and make framework
Launch the project in Unity.

Additional Information

Unity Version: 2023.2
Xcode Version: 15.3
Operating System: [Specify your operating system version]
Other relevant software versions or configurations: [Include any other relevant information about your setup]

Possible Solutions Explored

I have attempted to troubleshoot the issue by restarting unity trying different versions of unity

Screenshots or Code Samples

Any assistance or insights into resolving this issue would be greatly appreciated. Thank you!

example dont work

i build unity example from UnityPluginXcodeTemplate/Examples/UnityExample/
then i open in Xcode and build and run
and got that:

generate-xcodeproj is obsoleted

$ make framework
swift package generate-xcodeproj --skip-extra-files
error: Unknown subcommand or plugin name 'generate-xcodeproj'
Usage: swift package <options> <subcommand>
  See 'package -help' for more information.
make: *** [framework] Error 64

https://forums.swift.org/t/rfc-deprecating-generate-xcodeproj/42159

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