Core motion for Godot 2.x (based on PR 7127)

core/os/input.cpp

@@ -68,6 +68,7 @@ void Input::_bind_methods() {
 	ObjectTypeDB::bind_method(_MD("get_joy_axis_index_from_string", "axis"), &Input::get_joy_axis_index_from_string);
 	ObjectTypeDB::bind_method(_MD("start_joy_vibration", "device", "weak_magnitude", "strong_magnitude", "duration"), &Input::start_joy_vibration, DEFVAL(0));
 	ObjectTypeDB::bind_method(_MD("stop_joy_vibration", "device"), &Input::stop_joy_vibration);
+	ObjectTypeDB::bind_method(_MD("get_gravity"),&Input::get_gravity);
 	ObjectTypeDB::bind_method(_MD("get_accelerometer"),&Input::get_accelerometer);
 	ObjectTypeDB::bind_method(_MD("get_magnetometer"),&Input::get_magnetometer);
 	ObjectTypeDB::bind_method(_MD("get_gyroscope"),&Input::get_gyroscope);

core/os/input.h

@@ -80,6 +80,7 @@ public:
 
 	virtual void warp_mouse_pos(const Vector2& p_to)=0;
 
+	virtual Vector3 get_gravity()=0;
 	virtual Vector3 get_accelerometer()=0;
 	virtual Vector3 get_magnetometer()=0;
 	virtual Vector3 get_gyroscope()=0;

main/input_default.cpp

@@ -247,6 +247,12 @@ void InputDefault::joy_connection_changed(int p_idx, bool p_connected, String p_
 	emit_signal("joy_connection_changed", p_idx, p_connected);
 };
 
+Vector3 InputDefault::get_gravity() {
+
+	_THREAD_SAFE_METHOD_
+	return gravity;
+}
+
 Vector3 InputDefault::get_accelerometer() {
 
 	_THREAD_SAFE_METHOD_
@@ -376,6 +382,14 @@ void InputDefault::stop_joy_vibration(int p_device) {
 	joy_vibration[p_device] = vibration;
 }
 
+void InputDefault::set_gravity(const Vector3& p_gravity) {
+
+	_THREAD_SAFE_METHOD_
+
+	gravity=p_gravity;
+
+}
+
 void InputDefault::set_accelerometer(const Vector3& p_accel) {
 
 	_THREAD_SAFE_METHOD_

main/input_default.h

@@ -42,6 +42,7 @@ class InputDefault : public Input {
 	Set<int> joy_buttons_pressed;
 	Map<int,float> _joy_axis;
 	Map<StringName,int> custom_action_press;
+	Vector3 gravity;
 	Vector3 accelerometer;
 	Vector3 magnetometer;
 	Vector3 gyroscope;
@@ -178,6 +179,7 @@ public:
 	void joy_connection_changed(int p_idx, bool p_connected, String p_name, String p_guid = "");
 	void parse_joystick_mapping(String p_mapping, bool p_update_existing);
 
+	virtual Vector3 get_gravity();
 	virtual Vector3 get_accelerometer();
 	virtual Vector3 get_magnetometer();
 	virtual Vector3 get_gyroscope();
@@ -190,6 +192,7 @@ public:
 
 
 	void parse_input_event(const InputEvent& p_event);
+	void set_gravity(const Vector3& p_gravity);
 	void set_accelerometer(const Vector3& p_accel);
 	void set_magnetometer(const Vector3& p_magnetometer);
 	void set_gyroscope(const Vector3& p_gyroscope);

platform/iphone/app_delegate.h

@@ -30,11 +30,13 @@
 #import "gl_view.h"
 #import "view_controller.h"
 
-@interface AppDelegate : NSObject <UIApplicationDelegate, UIAccelerometerDelegate, GLViewDelegate> {
+// Old accelerometer approach deprecated since IOS 7.0
+// 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, 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

@@ -84,6 +84,9 @@ extern char** gargv;
 extern int iphone_main(int, int, int, char**);
 extern void iphone_finish();
 
+CMMotionManager *motionManager;
+bool motionInitialised; 
+
 static ViewController* mainViewController = nil;
 + (ViewController*) getViewController
 {
@@ -195,7 +198,56 @@ static int frame_count = 0;
 	default: {
 
 		if (OSIPhone::get_singleton()) {
-			OSIPhone::get_singleton()->update_accelerometer(accel[0], accel[1], accel[2]);
+			if (motionInitialised) {
+				// Just using polling approach for now, we can set this up so it sends data to us in intervals, might be better.
+				// See Apple reference pages for more details:
+				// https://developer.apple.com/reference/coremotion/cmmotionmanager?language=objc
+
+				// 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;
+
+				///@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;
+
+				///@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;
+
+				// 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? (note that left and right seem swapped)
+
+				switch ([[UIApplication sharedApplication] statusBarOrientation]) {
+					case UIDeviceOrientationLandscapeLeft: {
+						OSIPhone::get_singleton()->update_gravity(-gravity.y, gravity.x, gravity.z);
+						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_gravity(gravity.y, -gravity.x, gravity.z);
+						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_gravity(-gravity.x, gravity.y, gravity.z);
+						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_gravity(gravity.x, gravity.y, gravity.z);
+						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();
 		};
 
@@ -252,12 +304,14 @@ static int frame_count = 0;
 	//Show the window
 	[window makeKeyAndVisible];
 
-	//Configure and start accelerometer
+	if (!motionInitialised) {
-	last_accel[0] = 0;
+ 		motionManager = [[CMMotionManager alloc] init];
-	last_accel[1] = 0;
+ 		if (motionManager.deviceMotionAvailable) {
-	last_accel[2] = 0;
+ 			motionManager.deviceMotionUpdateInterval = 1.0/70.0;
-	[[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0 / kAccelerometerFrequency)];
+ 			[motionManager startDeviceMotionUpdates];			
-	[[UIAccelerometer sharedAccelerometer] setDelegate:self];
+			motionInitialised = YES;
+ 		};
+ 	};
 
 	//OSIPhone::screen_width = rect.size.width - rect.origin.x;
 	//OSIPhone::screen_height = rect.size.height - rect.origin.y;
@@ -297,12 +351,23 @@ static int frame_count = 0;
 - (void)applicationWillTerminate:(UIApplication*)application {
 
 	printf("********************* will terminate\n");
+
+	if (motionInitialised) {
+ 		///@TODO is this the right place to clean this up?
+ 		[motionManager stopDeviceMotionUpdates];
+ 		[motionManager release];
+ 		motionManager = nil;
+ 		motionInitialised = NO;	
+ 	};
+
 	iphone_finish();
 };
 
 - (void)applicationDidEnterBackground:(UIApplication *)application
 {
 	printf("********************* did enter background\n");
+	///@TODO maybe add pause motionManager? and where would we unpause it?
+
 	if (OS::get_singleton()->get_main_loop())
 		OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_WM_FOCUS_OUT);
 	[view_controller.view stopAnimation];
@@ -340,13 +405,6 @@ static int frame_count = 0;
 	};
 }
 
-- (void)accelerometer:(UIAccelerometer*)accelerometer didAccelerate:(UIAcceleration*)acceleration {
-	//Use a basic low-pass filter to only keep the gravity in the accelerometer values
-	accel[0] = acceleration.x; // * kFilteringFactor + accel[0] * (1.0 - kFilteringFactor);
-	accel[1] = acceleration.y; // * kFilteringFactor + accel[1] * (1.0 - kFilteringFactor);
-	accel[2] = acceleration.z; // * kFilteringFactor + accel[2] * (1.0 - kFilteringFactor);
-}
-
 - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
 #ifdef MODULE_FACEBOOKSCORER_IOS_ENABLED
 	return [[[FacebookScorer sharedInstance] facebook] handleOpenURL:url];

platform/iphone/detect.py

@@ -62,13 +62,13 @@ def configure(env):
         env['CCFLAGS'] = string.split('-arch i386 -fobjc-abi-version=2 -fobjc-legacy-dispatch -fmessage-length=0 -fpascal-strings -fasm-blocks  -Wall -D__IPHONE_OS_VERSION_MIN_REQUIRED=40100 -isysroot $IPHONESDK -mios-simulator-version-min=4.3 -DCUSTOM_MATRIX_TRANSFORM_H=\\\"build/iphone/matrix4_iphone.h\\\" -DCUSTOM_VECTOR3_TRANSFORM_H=\\\"build/iphone/vector3_iphone.h\\\"')
     elif (env["arch"] == "arm64"):  # arm64
         env["bits"] = "64"
-        env['CCFLAGS'] = string.split('-fno-objc-arc -arch arm64 -fmessage-length=0 -fno-strict-aliasing -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits -Wno-trigraphs -fpascal-strings -Wmissing-prototypes -Wreturn-type -Wparentheses -Wswitch -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-shorten-64-to-32 -fvisibility=hidden -Wno-sign-conversion -MMD -MT dependencies -miphoneos-version-min=5.1.1 -isysroot $IPHONESDK')
+        env['CCFLAGS'] = string.split('-fno-objc-arc -arch arm64 -fmessage-length=0 -fno-strict-aliasing -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits -Wno-trigraphs -fpascal-strings -Wmissing-prototypes -Wreturn-type -Wparentheses -Wswitch -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-shorten-64-to-32 -fvisibility=hidden -Wno-sign-conversion -MMD -MT dependencies -miphoneos-version-min=7.0 -isysroot $IPHONESDK')
         env.Append(CPPFLAGS=['-DNEED_LONG_INT'])
         env.Append(CPPFLAGS=['-DLIBYUV_DISABLE_NEON'])
     else:  # armv7
         env["arch"] = "arm"
         env["bits"] = "32"
-        env['CCFLAGS'] = string.split('-fno-objc-arc -arch armv7 -fmessage-length=0 -fno-strict-aliasing -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits -Wno-trigraphs -fpascal-strings -Wmissing-prototypes -Wreturn-type -Wparentheses -Wswitch -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-shorten-64-to-32 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk -fvisibility=hidden -Wno-sign-conversion -mthumb "-DIBOutlet=__attribute__((iboutlet))" "-DIBOutletCollection(ClassName)=__attribute__((iboutletcollection(ClassName)))" "-DIBAction=void)__attribute__((ibaction)" -miphoneos-version-min=5.1.1 -MMD -MT dependencies -isysroot $IPHONESDK')
+        env['CCFLAGS'] = string.split('-fno-objc-arc -arch armv7 -fmessage-length=0 -fno-strict-aliasing -fdiagnostics-print-source-range-info -fdiagnostics-show-category=id -fdiagnostics-parseable-fixits -Wno-trigraphs -fpascal-strings -Wmissing-prototypes -Wreturn-type -Wparentheses -Wswitch -Wno-unused-parameter -Wunused-variable -Wunused-value -Wno-shorten-64-to-32 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk -fvisibility=hidden -Wno-sign-conversion -mthumb "-DIBOutlet=__attribute__((iboutlet))" "-DIBOutletCollection(ClassName)=__attribute__((iboutletcollection(ClassName)))" "-DIBAction=void)__attribute__((ibaction)" -miphoneos-version-min=7.0 -MMD -MT dependencies -isysroot $IPHONESDK')
 
     if (env["arch"] == "x86"):
         env['IPHONEPLATFORM'] = 'iPhoneSimulator'
@@ -83,6 +83,7 @@ def configure(env):
                               '-framework', 'CoreAudio',
                               '-framework', 'CoreGraphics',
                               '-framework', 'CoreMedia',
+                              '-framework', 'CoreMotion',
                               '-framework', 'Foundation',
                               '-framework', 'Security',
                               '-framework', 'UIKit',
@@ -93,7 +94,7 @@ def configure(env):
                               '-F$IPHONESDK',
                               ])
     elif (env["arch"] == "arm64"):
-        env.Append(LINKFLAGS=['-arch', 'arm64', '-Wl,-dead_strip', '-miphoneos-version-min=5.1.1',
+        env.Append(LINKFLAGS=['-arch', 'arm64', '-Wl,-dead_strip', '-miphoneos-version-min=7.0',
                                                 '-isysroot', '$IPHONESDK',
                                                 #'-stdlib=libc++',
                                                 '-framework', 'Foundation',
@@ -109,9 +110,10 @@ def configure(env):
                                                 '-framework', 'MediaPlayer',
                                                 '-framework', 'AVFoundation',
                                                 '-framework', 'CoreMedia',
+                                                '-framework', 'CoreMotion',
                               ])
     else:
-        env.Append(LINKFLAGS=['-arch', 'armv7', '-Wl,-dead_strip', '-miphoneos-version-min=5.1.1',
+        env.Append(LINKFLAGS=['-arch', 'armv7', '-Wl,-dead_strip', '-miphoneos-version-min=7.0',
                                                 '-isysroot', '$IPHONESDK',
                                                 '-framework', 'Foundation',
                                                 '-framework', 'UIKit',
@@ -126,6 +128,7 @@ def configure(env):
                                                 '-framework', 'MediaPlayer',
                                                 '-framework', 'AVFoundation',
                                                 '-framework', 'CoreMedia',
+                                                '-framework', 'CoreMotion',
                               ])
 
     if env['game_center'] == 'yes':

platform/iphone/os_iphone.cpp

@@ -323,48 +323,24 @@ void OSIPhone::touches_cancelled() {
 
 static const float ACCEL_RANGE = 1;
 
-void OSIPhone::update_accelerometer(float p_x, float p_y, float p_z) {
+void OSIPhone::update_gravity(float p_x, float p_y, float p_z) {
-
+	input->set_gravity(Vector3(p_x, p_y, p_z));
-	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) {
-		//printf("updating accel x %f\n", p_x);
-		InputEvent ev;
-		ev.type = InputEvent::JOYSTICK_MOTION;
-		ev.device = 0;
-		ev.joy_motion.axis = JOY_ANALOG_0_X;
-		ev.joy_motion.axis_value = (p_x / (float)ACCEL_RANGE);
-		ev.ID = ++last_event_id;
-		last_accel.x = p_x;
-		queue_event(ev);
-	};
-	if (p_y != last_accel.y) {
-		//printf("updating accel y %f\n", p_y);
-		InputEvent ev;
-		ev.type = InputEvent::JOYSTICK_MOTION;
-		ev.device = 0;
-		ev.joy_motion.axis = JOY_ANALOG_0_Y;
-		ev.joy_motion.axis_value = (p_y / (float)ACCEL_RANGE);
-		ev.ID = ++last_event_id;
-		last_accel.y = p_y;
-		queue_event(ev);
-	};
-	if (p_z != last_accel.z) {
-		//printf("updating accel z %f\n", p_z);
-		InputEvent ev;
-		ev.type = InputEvent::JOYSTICK_MOTION;
-		ev.device = 0;
-		ev.joy_motion.axis = JOY_ANALOG_1_X;
-		ev.joy_motion.axis_value = ( (1.0 - p_z) / (float)ACCEL_RANGE);
-		ev.ID = ++last_event_id;
-		last_accel.z = p_z;
-		queue_event(ev);
-	};
-	*/
 };
 
+void OSIPhone::update_accelerometer(float p_x, float p_y, float p_z) {
 
+	// 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));
+
+};
+
+void OSIPhone::update_magnetometer(float p_x, float p_y, float 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) {
+	input->set_gyroscope(Vector3(p_x, p_y, p_z));
+};
 
 void OSIPhone::delete_main_loop() {
 

platform/iphone/os_iphone.h

@@ -152,7 +152,10 @@ public:
 
 	int set_base_framebuffer(int p_fb);
 
+	void update_gravity(float p_x, float p_y, float p_z);
 	void update_accelerometer(float p_x, float p_y, float p_z);
+	void update_magnetometer(float p_x, float p_y, float p_z);
+	void update_gyroscope(float p_x, float p_y, float p_z);
 
 	static OSIPhone* get_singleton();