C++ Version of the ODK?

raffibag · November 2012

We received a great comment from a developer asking whether or not a C++ version of the ODK is planned; and, if so, would there be any guidelines or workflows for such version.

Though a C++ version of the ODK is not presently available, we're going to be looking into creating a wrapper around the Java SDK. With such solution will come an example and guidelines as to how to make it work.

Stay tuned and we will keep you posted on this development.

BTW, our Head of Engineering, Steve Chamberlin, is a C++ guru, so there's a contingent within OUYA that'd like to see this happen :).

chamberlin · November 2012

For today, you can use JNI to call the Java functions from your native C++ application. See http://docs.oracle.com/javase/1.5.0/docs/guide/jni/spec/functions.html for some general docs.

Something like (warning, untested code):


static jclass gExampleClass;
static jobject gExampleObject;
static jmethodID gExampleMethod;

JNIEnv* env = getJNIEnv();
gExampleClass = env->FindClass("com/vendor/example");
ASSERT(gExampleClass);
gExampleClass = reinterpret_cast<jclass>(env->NewGlobalRef(gExampleClass));
jmethodID initMethod = env->GetMethodID(gExampleClass, "<init>", "()V");
		
gExampleObject = env->NewObject(gExampleClass, initMethod);
gExampleObject = env->NewGlobalRef(gExampleObject);
	
gExampleMethod = env->GetMethodID(gExampleClass, "methodName", "()V");


// calling a method

JNIEnv* env = getJNIEnv();
env->CallNonvirtualVoidMethod(gExampleObject, gExampleClass, gExampleMethod);

As Raffi said, we are working on a native wrapper that does this work for you, as well as better documentation and examples.

tgraupmann · October 2013

I've created a native wrapper around the ODK.

https://github.com/ouya/ouya-sdk-examples/tree/master/Android/InAppPurchasesNative

I'll be documenting how it works here:

https://devs.ouya.tv/developers/docs/android

I used the Tegra Android Development Pack to create this example.

https://developer.nvidia.com/tegra-android-development-pack

bebobli · October 2013

This new wrapper, does it bind the gamepad? Maybe I missed it, but that seems to be missing from what I skimmed. It is nice to have in-app purchasing available for native use, but what of inputs?

Edit: Thanks for the response below! I'll see if we can work with this.

tgraupmann · October 2013

For inputs there's a native input loop where you can detect keycodes.

I haven't added the Java calls for the controller yet...

I did define Controller.h which has the OUYA constants for buttons and axis which you can detect in the input loop.

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C++ Version of the ODK?

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