From 370ae3512deda40b2659a1192f302298e269305f Mon Sep 17 00:00:00 2001
From: Jamil Halabi <jay3dlinux@gmail.com>
Date: Fri, 15 Jul 2016 15:31:34 +0800
Subject: Added gyroscope support to Godot and Android

---
 platform/android/godot_android.cpp | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

(limited to 'platform/android/godot_android.cpp')

diff --git a/platform/android/godot_android.cpp b/platform/android/godot_android.cpp
index 9f909d7041..2371274d9d 100644
--- a/platform/android/godot_android.cpp
+++ b/platform/android/godot_android.cpp
@@ -314,6 +314,7 @@ struct engine {
     ASensorManager* sensorManager;
     const ASensor* accelerometerSensor;
     const ASensor* magnetometerSensor;
+    const ASensor* gyroscopeSensor;
     ASensorEventQueue* sensorEventQueue;
 
     bool display_active;
@@ -745,6 +746,15 @@ static void engine_handle_cmd(struct android_app* app, int32_t cmd) {
 		ASensorEventQueue_setEventRate(engine->sensorEventQueue,
 			engine->magnetometerSensor, (1000L/60)*1000);
 
+	    }
+	    // And the gyroscope.
+	    if (engine->gyroscopeSensor != NULL) {
+		ASensorEventQueue_enableSensor(engine->sensorEventQueue,
+			engine->gyroscopeSensor);
+		// We'd like to get 60 events per second (in us).
+		ASensorEventQueue_setEventRate(engine->sensorEventQueue,
+			engine->gyroscopeSensor, (1000L/60)*1000);
+
 	    }
 	    engine->animating = 1;
 	    break;
@@ -759,6 +769,10 @@ static void engine_handle_cmd(struct android_app* app, int32_t cmd) {
 		ASensorEventQueue_disableSensor(engine->sensorEventQueue,
 			engine->magnetometerSensor);
 	    }
+	    if (engine->gyroscopeSensor != NULL) {
+		ASensorEventQueue_disableSensor(engine->sensorEventQueue,
+			engine->gyroscopeSensor);
+	    }
 	    // Also stop animating.
 	    engine->animating = 0;
 	    engine_draw_frame(engine);
@@ -788,6 +802,8 @@ void android_main(struct android_app* state) {
            ASENSOR_TYPE_ACCELEROMETER);
      engine.magnetometerSensor = ASensorManager_getDefaultSensor(engine.sensorManager,
            ASENSOR_TYPE_MAGNETIC_FIELD);
+     engine.gyroscopeSensor = ASensorManager_getDefaultSensor(engine.sensorManager,
+           ASENSOR_TYPE_GYROSCOPE);
      engine.sensorEventQueue = ASensorManager_createEventQueue(engine.sensorManager,
 	     state->looper, LOOPER_ID_USER, NULL, NULL);
 
@@ -828,7 +844,7 @@ void android_main(struct android_app* state) {
 	     // If a sensor has data, process it now.
 	    // LOGI("events\n");
 	     if (ident == LOOPER_ID_USER) {
-		 if (engine.accelerometerSensor != NULL || engine.magnetometerSensor != NULL) {
+		 if (engine.accelerometerSensor != NULL || engine.magnetometerSensor != NULL || engine.gyroscopeSensor != NULL) {
 		     ASensorEvent event;
 		     while (ASensorEventQueue_getEvents(engine.sensorEventQueue,
 			     &event, 1) > 0) {
@@ -843,6 +859,10 @@ void android_main(struct android_app* state) {
 				     engine.os->process_magnetometer(Vector3(event.magnetic.x, event.magnetic.y,
 									      event.magnetic.z));
 				  }
+				  if (event.vector != NULL) {
+				     engine.os->process_gyroscope(Vector3(event.vector.x, event.vector.y,
+									      event.vector.z));
+				  }
 			     }
 
 		     }
-- 
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