diff options
Diffstat (limited to 'platform/iphone')
| -rw-r--r-- | platform/iphone/godot_view.mm | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/platform/iphone/godot_view.mm b/platform/iphone/godot_view.mm index 887297848e..468fa2928a 100644 --- a/platform/iphone/godot_view.mm +++ b/platform/iphone/godot_view.mm @@ -39,6 +39,7 @@ #import <CoreMotion/CoreMotion.h> static const int max_touches = 8; +static const float earth_gravity = 9.80665; @interface GodotView () { UITouch *godot_touches[max_touches]; @@ -402,10 +403,19 @@ static const int max_touches = 8; // 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 + // component. We add them back together. CMAcceleration gravity = self.motionManager.deviceMotion.gravity; CMAcceleration acceleration = self.motionManager.deviceMotion.userAcceleration; + // To be consistent with Android we convert the unit of measurement from g (Earth's gravity) + // to m/s^2. + gravity.x *= earth_gravity; + gravity.y *= earth_gravity; + gravity.z *= earth_gravity; + acceleration.x *= earth_gravity; + acceleration.y *= earth_gravity; + acceleration.z *= earth_gravity; + ///@TODO We don't seem to be getting data here, is my device broken or /// is this code incorrect? CMMagneticField magnetic = self.motionManager.deviceMotion.magneticField.field; |