Unreal vs Unity?
For an experienced VR app developer with a high level of expertise in both Unreal and Unity, which platform is the better one for making an Oculus Quest 2 app? I am part of a team at the very beginning stages of developing a series of apps for the Oculus Quest 2. Our team is currently split between using Unity and C# vs Unreal and C++. What do you think?
Why it seems it's not possible to use CPP in the NDK sources ?
Hi, I am still messing up with code and trying to get my things work. My stuff is entirely done in CPP however I noticed all sources in the NDK samples are plain C-99 .. If I take the VrCubeWorld_Vulkan sample and I try to add to the project a simple "Banana.cpp" file that contains as simple as : #include <stdio.h> #include <stdbool.h> bool InitWorld (void *p) { return true; } Then I modify the Android.mk file as : LOCAL_MODULE := vrcubeworldvk #LOCAL_CFLAGS := -std=c99 -Werror LOCAL_SRC_FILES := ../../../Src/VrCubeWorld_Vulkan.c \ ../../../Src/Banana.cpp \ ../../../Src/Framework_Vulkan.c And then from within I call : extern bool InitWorld (void *p); void android_main( struct android_app * app ) { ALOGV( "----------------------------------------------------------------" ); ALOGV( "android_app_entry()" ); ALOGV( " android_main()" ); InitWorld("Pappinone"); When I try to compile it spews those sort of errors : Build command failed. Error while executing process /home/gilesgoat/Android/Sdk/ndk/20.1.5948944/ndk-build with arguments {NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/jni/Android.mk NDK_APPLICATION_MK=/home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/jni/Application.mk APP_ABI=arm64-v8a NDK_ALL_ABIS=arm64-v8a NDK_DEBUG=1 APP_PLATFORM=android-21 NDK_OUT=/home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/build/intermediates/ndkBuild/debug/obj NDK_LIBS_OUT=/home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/build/intermediates/ndkBuild/debug/lib V=0 -j4 -C/home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android APP_PLATFORM=android-21 NDK_TOOLCHAIN_VERSION=clang APP_STL=c++_static NDK_DEBUG=1 OVR_DEBUG=1 USE_ASAN=1 /home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/build/intermediates/ndkBuild/debug/obj/local/arm64-v8a/libvrcubeworldvk.so} make: Entering directory `/home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android' [arm64-v8a] Compile : vrcubeworldvk <= VrCubeWorld_Vulkan.c [arm64-v8a] Compile++ : vrcubeworldvk <= Banana.cpp [arm64-v8a] Compile : vrcubeworldvk <= Framework_Vulkan.c [arm64-v8a] Prebuilt : libvrapi.so <= /home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/jni/../../../../../VrApi/Projects/AndroidPrebuilt/jni/../../../Libs/Android/arm64-v8a/Debug/ [arm64-v8a] StaticLibrary : libandroid_native_app_glue.a [arm64-v8a] SharedLibrary : libvrcubeworldvk.so /home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/build/intermediates/ndkBuild/debug/obj/local/arm64-v8a/objs-debug/vrcubeworldvk/__/__/__/Src/VrCubeWorld_Vulkan.o: In function `android_main': /home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/jni/../../../Src/VrCubeWorld_Vulkan.c:1429: undefined reference to `InitWorld' clang++: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [/home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android/build/intermediates/ndkBuild/debug/obj/local/arm64-v8a/libvrcubeworldvk.so] Error 1 make: Leaving directory `/home/gilesgoat/OVR-SDK-Mobile/VrSamples/VrCubeWorld_Vulkan/Projects/Android' If I "transform" all in .cpp gets even worse, it cannot find all the ovrVK... functions. Is any way to "properly MIX" cpp and C in the VRAPI samples or the only solution would be to "confine" all the CPP code into a precompiled lib and call the few needed functions via some C wrapper ? Why the examples do not support CPP ? If that Banana.cpp is renamed in Banana.c all works ( but you can't use CPP stuff in ). Cheers.
