Initial accelerometer support

include/services/hid.hpp

@@ -56,6 +56,7 @@ class HIDService {
 	s16 circlePadX, circlePadY;      // Circlepad state
 	s16 touchScreenX, touchScreenY;  // Touchscreen state
 	s16 roll, pitch, yaw;            // Gyroscope state
+	s16 accelX, accelY, accelZ;      // Accelerometer state
 
 	bool accelerometerEnabled;
 	bool eventsInitialized;
@@ -87,6 +88,11 @@ class HIDService {
 		*(T*)&sharedMem[offset] = value;
 	}
 
+	template <typename T>
+	T* getSharedMemPointer(size_t offset) {
+		return (T*)&sharedMem[offset];
+	}
+
   public:
 	static constexpr float gyroscopeCoeff = 14.375f;  // Same as retail 3DS
 
@@ -130,6 +136,12 @@ class HIDService {
 	void setPitch(s16 value) { pitch = value; }
 	void setYaw(s16 value) { yaw = value; }
 
+	void setAccel(s16 x, s16 y, s16 z) {
+		accelX = x;
+		accelY = y;
+		accelZ = z;
+	}
+
 	void updateInputs(u64 currentTimestamp);
 
 	void setSharedMem(u8* ptr) {