Added logic for adjusting to screen orientation and removed final negative z

platform/iphone/app_delegate.h

@@ -34,12 +34,9 @@
 // Include coremotion for accelerometer, gyroscope and magnetometer access, available since IOS 4.0 but some functionality won't work for anything before IOS 5.0
 #import <CoreMotion/CoreMotion.h>
 
-//@interface AppDelegate : NSObject <UIApplicationDelegate, UIAccelerometerDelegate, GLViewDelegate> {
 @interface AppDelegate : NSObject <UIApplicationDelegate, GLViewDelegate> {
 	//@property (strong, nonatomic) UIWindow *window;
 	ViewController* view_controller;
-//	UIAccelerationValue accel[3];
-//	UIAccelerationValue last_accel[3];
 };
 
 @property (strong, nonatomic) UIWindow *window;

platform/iphone/app_delegate.mm

@@ -196,7 +196,6 @@ static int frame_count = 0;
 	}; break; // no fallthrough
 
 	default: {
-
 		if (OSIPhone::get_singleton()) {
 //			OSIPhone::get_singleton()->update_accelerometer(accel[0], accel[1], accel[2]);
 			if (motionInitialised) {
@@ -207,14 +206,42 @@ static int frame_count = 0;
 				// Apple splits our accelerometer date into a gravity and user movement component. We add them back together
 				CMAcceleration gravity = motionManager.deviceMotion.gravity;
 				CMAcceleration acceleration = motionManager.deviceMotion.userAcceleration;
-				OSIPhone::get_singleton()->update_accelerometer(acceleration.x + gravity.x, acceleration.y + gravity.y, acceleration.z + gravity.z);
 
+				///@TODO We don't seem to be getting data here, is my device broken or is this code incorrect?
 				CMMagneticField magnetic = motionManager.deviceMotion.magneticField.field;
-				OSIPhone::get_singleton()->update_magnetometer(magnetic.x, magnetic.y, magnetic.z);
 
 				///@TODO we can access rotationRate as a CMRotationRate variable (processed date) or CMGyroData (raw data), have to see what works best
 				CMRotationRate rotation = motionManager.deviceMotion.rotationRate;
-				OSIPhone::get_singleton()->update_gyroscope(rotation.x, rotation.y, rotation.z);
+
+				// Adjust for screen orientation.
+				// [[UIDevice currentDevice] orientation] changes even if we've fixed our orientation which is not
+				// a good thing when you're trying to get your user to move the screen in all directions and want consistent output
+
+				///@TODO Using [[UIApplication sharedApplication] statusBarOrientation] is a bit of a hack. Godot obviously knows the orientation so maybe we 
+				// can use that instead?
+
+				switch ([[UIApplication sharedApplication] statusBarOrientation]) {
+				case UIDeviceOrientationLandscapeLeft: {
+					OSIPhone::get_singleton()->update_accelerometer(-(acceleration.y + gravity.y), acceleration.x + gravity.x, acceleration.z + gravity.z);
+					OSIPhone::get_singleton()->update_magnetometer(-magnetic.y, magnetic.x, magnetic.z);
+					OSIPhone::get_singleton()->update_gyroscope(-rotation.y, rotation.x, rotation.z);
+				}; break;
+				case UIDeviceOrientationLandscapeRight: {
+					OSIPhone::get_singleton()->update_accelerometer(acceleration.y + gravity.y, acceleration.x + gravity.x, acceleration.z + gravity.z);
+					OSIPhone::get_singleton()->update_magnetometer(magnetic.y, magnetic.x, magnetic.z);
+					OSIPhone::get_singleton()->update_gyroscope(rotation.y, rotation.x, rotation.z);
+				}; break;
+				case UIDeviceOrientationPortraitUpsideDown: {
+					OSIPhone::get_singleton()->update_accelerometer(-(acceleration.x + gravity.x), acceleration.y + gravity.y, acceleration.z + gravity.z);
+					OSIPhone::get_singleton()->update_magnetometer(-magnetic.x, magnetic.y, magnetic.z);
+					OSIPhone::get_singleton()->update_gyroscope(-rotation.x, rotation.y, rotation.z);
+				}; break;
+				default: { // assume portrait
+					OSIPhone::get_singleton()->update_accelerometer(acceleration.x + gravity.x, acceleration.y + gravity.y, acceleration.z + gravity.z);
+					OSIPhone::get_singleton()->update_magnetometer(magnetic.x, magnetic.y, magnetic.z);
+					OSIPhone::get_singleton()->update_gyroscope(rotation.x, rotation.y, rotation.z);
+				}; break;
+				};
 			}
 
 			bool quit_request = OSIPhone::get_singleton()->iterate();

platform/iphone/os_iphone.cpp

@@ -325,8 +325,8 @@ static const float ACCEL_RANGE = 1;
 
 void OSIPhone::update_accelerometer(float p_x, float p_y, float p_z) {
 
-	///@TODO I've made the Z negative like the original accelerometer code, this probably needs more work
-	input->set_accelerometer(Vector3(p_x / (float)ACCEL_RANGE, p_y / (float)ACCEL_RANGE, -p_z / (float)ACCEL_RANGE));
+	// Found out the Z should not be negated! Pass as is!
+	input->set_accelerometer(Vector3(p_x / (float)ACCEL_RANGE, p_y / (float)ACCEL_RANGE, p_z / (float)ACCEL_RANGE));
 
 	/*
 	if (p_x != last_accel.x) {
@@ -366,8 +366,7 @@ void OSIPhone::update_accelerometer(float p_x, float p_y, float p_z) {
 };
 
 void OSIPhone::update_magnetometer(float p_x, float p_y, float p_z) {
-	///@TODO I've made the Z negative like the original accelerometer code, this probably needs more work
-	input->set_magnetometer(Vector3(p_x, p_y, -p_z));
+	input->set_magnetometer(Vector3(p_x, p_y, p_z));
 };
 
 void OSIPhone::update_gyroscope(float p_x, float p_y, float p_z) {