Plugin For Unity
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Plugin allows game code to call functions from native code libraries written in languages like C/C++. Plugins are needed to access device capabilities that Unity cannot support natively, reuse existing native components, customize games beyond what Unity assets allow, and address cross-device and cross-platform requirements. Plugins for different platforms like iOS and Android require platform-specific code and interfaces between the native code and Unity game code.
![iOS Plugins
• C/C++ Native Functions in xxx.mm
extern “C”{
float ReturnFloat()
{ return 10.5; }
}
• C# Dll Import
using System.Runtime.InteropServices;
[DllImport("__Internal")]
public static extern float ReturnFloat();](https://image.slidesharecdn.com/pluginunity-150401221331-conversion-gate01/85/Plugin-For-Unity-5-320.jpg)
![iOS Plugins
• C/C++ Native Functions in xxx.h
void UnitySendMessage(const char* obj, const char* method, const
char* msg);
• C/C++ Native Functions in xxx.mm
extern “C”{
void UnityMessage(char* obj, char* function, char* message){
UnitySendMessage(obj, function, message);}
}
• C# Dll Import
using System.Runtime.InteropServices;
[DllImport("__Internal")]
public static extern float UnityMessage(string obj, string function, string
message);](https://image.slidesharecdn.com/pluginunity-150401221331-conversion-gate01/85/Plugin-For-Unity-6-320.jpg)
![Android Plugins
• C/C++ Native Functions in xxx.mm
extern “C”{
float ReturnFloat()
{ return 10.5; }
}
• C# Dll Import
using System.Runtime.InteropServices;
[DllImport("__Internal")]
public static extern float ReturnFloat();](https://image.slidesharecdn.com/pluginunity-150401221331-conversion-gate01/85/Plugin-For-Unity-7-320.jpg)
Plugin For Unity
- 1. Plugin
- 2. What is Plugin? • Libraries of native code written in C, C++, Objective-C,….etc • Allow your game code to call functions from these libraries
- 3. Why do you need to develop a Plugin? • Unity3D can’t Do That • Reuse C/C++/Objective-C components • Difficult customize in Unity3D Assets Store • Cross-Device • Cross-Platform • Security Issues
- 4. Plugins for Different Device • iOS #if UNITY_IOS #else #endif if (Application.platform == RuntimePlatform.IPhonePlayer) • Android #if UNITY_ANDROID #else #endif if (Application.platform == RuntimePlatform.Android)
- 5. iOS Plugins • C/C++ Native Functions in xxx.mm extern “C”{ float ReturnFloat() { return 10.5; } } • C# Dll Import using System.Runtime.InteropServices; [DllImport("__Internal")] public static extern float ReturnFloat();
- 6. iOS Plugins • C/C++ Native Functions in xxx.h void UnitySendMessage(const char* obj, const char* method, const char* msg); • C/C++ Native Functions in xxx.mm extern “C”{ void UnityMessage(char* obj, char* function, char* message){ UnitySendMessage(obj, function, message);} } • C# Dll Import using System.Runtime.InteropServices; [DllImport("__Internal")] public static extern float UnityMessage(string obj, string function, string message);
- 7. Android Plugins • C/C++ Native Functions in xxx.mm extern “C”{ float ReturnFloat() { return 10.5; } } • C# Dll Import using System.Runtime.InteropServices; [DllImport("__Internal")] public static extern float ReturnFloat();
- 8. Android Plugins • Jave Class public class PlugInBridge{ public static float ReturnFloat() { return 10.5f; } } • C# AndroidJNI.AttachCurrentThread(); AndroidJavaClass androidClass = new AndroidJavaClass ("com.example.unityplugin.PlugInBridge"); Debug.Log(androidClass.CallStatic< float >(“ReturnFloat"));
- 9. Android Plugins • Overwrite onActivityResult public class FTUnityPlayerActivity extends UnityPlayerActivity { public void onActivityResult(int requestCode, int resultCode, Intent data) { Log.d("FTUnityPlayerActivity", "onActivityResult: requestCode: " + requestCode + ", resultCode:" + resultCode); } }
- 10. Android Plugins • Modify your Manifest.xml Automatically <activity android:name="com.example.unityplugin.FTUnityPlayerActivity" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity>