AndEnginePhysicsBox2DExtension | AndEngine - Physics Box2D Extension
kandi X-RAY | AndEnginePhysicsBox2DExtension Summary
kandi X-RAY | AndEnginePhysicsBox2DExtension Summary
AndEngine - Physics Box2D Extension
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QUESTION
I have developed an app that uses andEngine GLES2 and andEngine's extension Physics2DBox. The application has other functionality that doesn't just focus on the andEngine aspect. I have proguard enabled in my app. Now when I build a signed version of my app and navigate to where andEngine is used I get the following stack trace:
...ANSWER
Answered 2019-Dec-17 at 07:01In your case, it looks like proguard removes the World.class of the box2d extension. Try to add the following to your proguard rules:
QUESTION
I am trying to compile Box2D to 64 bit version for android using android ndk
however I am getting loads of errors like this one:
andEnginePhysicsBox2DExtension/src/main/jni\Box2D/Collision/Shapes/b2ChainShape.h:111:20: warning: implicit conversion of NULL constant to 'bool' [-Wnull-conversion] m_hasPrevVertex = NULL; ~ ^~~~ false
Thats content of my b2ChainShape.h
...ANSWER
Answered 2019-Sep-09 at 07:33The warning you got here
implicit conversion of NULL constant to 'bool' [-Wnull-conversion] m_hasPrevVertex = NULL; ~ ^~~~ false
tells you, that you have bool
fields that are initialized with NULL
instead of an actual boolean value. For example m_hasPrevVertex
and m_hasNextVertex
. So the compiler tries to fix this by implicitly setting those values to false
instead and by notifying you about that fact.
It's not a critical error in this case, but definitely a code smell. (Although, maybe different compilers would actually throw an error here, I'm not sure)
You can get rid of these warnings by simply initializing all your bools to either true
or false
, depending on your use case.
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