reading sensor from android

not compiling yet

Author: ricardoquesada

cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxHelper.java

@@ -40,6 +40,7 @@ of this software and associated documentation files (the "Software"), to deal
 import android.util.DisplayMetrics;
 import android.view.Display;
 import android.view.WindowManager;
+import android.hardware.SensorManager;
 
 import com.enhance.gameservice.IGameTuningService;
 
@@ -49,6 +50,7 @@ of this software and associated documentation files (the "Software"), to deal
 import java.util.Map;
 import java.util.Set;
 
+
 public class Cocos2dxHelper {
     // ===========================================================
     // Constants
@@ -611,4 +613,12 @@ public static int setLowPowerMode(boolean enable) {
         }
     }
     //Enhance API modification end     
+    public static float[] getSensorRotationMatrix() {
+        float[] rotationM = new float[16];
+        float[] inclinationM = new float[16];
+        float[] gravs = new float[3];
+        float[] geoMags = new float[3];
+        SensorManager.getRotationMatrix(rotationMatrix, inclimationMatrix, gravs, geoMags);
+        return rotationM;
+    }
 }

cocos/platform/android/jni/JniHelper.h

@@ -131,6 +131,23 @@ class CC_DLL JniHelper
         return ret;
     }
 
+    template <typename... Ts>
+    static jfloatArray callStaticFloatArrayMethod(const std::string& className, 
+                                       const std::string& methodName, 
+                                       Ts... xs) {
+        jfloatArray ret;
+        cocos2d::JniMethodInfo t;
+        std::string signature = "(" + std::string(getJNISignature(xs...)) + ")[F";
+        if (cocos2d::JniHelper::getStaticMethodInfo(t, className.c_str(), methodName.c_str(), signature.c_str())) {
+            ret = (jfloatArray) t.env->CallStaticObjectMethod(t.classID, t.methodID, convert(t, xs)...);
+            t.env->DeleteLocalRef(t.classID);
+            deleteLocalRefs(t.env);
+        } else {
+            reportError(className, methodName, signature);
+        }
+        return ret;
+    }
+
     template <typename... Ts>
     static double callStaticDoubleMethod(const std::string& className, 
                                          const std::string& methodName, 

cocos/vr/CCVRGenericHeadTracker.cpp

@@ -33,7 +33,8 @@
 #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
 #import <CoreMotion/CoreMotion.h>
 #elif (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
-#include <android/sensor.h>
+#include <jni.h>
+#include "platform/android/jni/JniHelper.h"
 #endif
 
 NS_CC_BEGIN
@@ -172,7 +173,11 @@ Mat4 VRGenericHeadTracker::getLocalRotation()
     return  _deviceToDisplay * worldToDevice;
 
 #elif (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
+    static const std::string helperClassName = "org/cocos2dx/lib/Cocos2dxHelper";
+    auto rotMatrix = JniHelper::callStaticFloatArrayMethod(helperClassName, "getSensorRotationMatrix");
 
+    Mat4 ret(rotMatrix);
+    return ret;
 #else
     return Mat4::IDENTITY;
 #endif