From c8b8a60033bb35917c10eeb5c4043ee428ae61a6 Mon Sep 17 00:00:00 2001
From: JosJuice <josjuice@gmail.com>
Date: Wed, 20 Nov 2019 19:40:47 +0100
Subject: Android: Let WiimoteEmu know whether we have accelerometer/gyroscope

---
 .../ControllerInterface/Android/Android.cpp        | 47 ++++++++++++++++------
 .../ControllerInterface/Android/Android.h          |  2 +
 2 files changed, 37 insertions(+), 12 deletions(-)

(limited to 'Source/Core/InputCommon/ControllerInterface')

diff --git a/Source/Core/InputCommon/ControllerInterface/Android/Android.cpp b/Source/Core/InputCommon/ControllerInterface/Android/Android.cpp
index 78fc029374..21537cba15 100644
--- a/Source/Core/InputCommon/ControllerInterface/Android/Android.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/Android/Android.cpp
@@ -10,6 +10,21 @@
 
 namespace ciface::Android
 {
+static bool s_accelerometer_enabled = false;
+static bool s_gyroscope_enabled = false;
+
+void SetMotionSensorsEnabled(bool accelerometer_enabled, bool gyroscope_enabled)
+{
+  const bool any_changes =
+      s_accelerometer_enabled != accelerometer_enabled || s_gyroscope_enabled != gyroscope_enabled;
+
+  s_accelerometer_enabled = accelerometer_enabled;
+  s_gyroscope_enabled = gyroscope_enabled;
+
+  if (any_changes)
+    g_controller_interface.RefreshDevices();
+}
+
 void PopulateDevices()
 {
   for (int i = 0; i < 8; ++i)
@@ -186,18 +201,26 @@ Touchscreen::Touchscreen(int padID) : _padID(padID)
   AddInput(new Axis(_padID, ButtonManager::TURNTABLE_EFFECT_DIAL));
 
   // Wiimote IMU
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_LEFT));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_RIGHT));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_FORWARD));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_BACKWARD));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_UP));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_DOWN));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_PITCH_UP));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_PITCH_DOWN));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_ROLL_LEFT));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_ROLL_RIGHT));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_YAW_LEFT));
-  AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_YAW_RIGHT));
+  // Only add inputs if we actually can receive data from the relevant sensor.
+  // Whether inputs exist affects what WiimoteEmu gets when calling ControlReference::BoundCount.
+  if (s_accelerometer_enabled)
+  {
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_LEFT));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_RIGHT));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_FORWARD));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_BACKWARD));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_UP));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_ACCEL_DOWN));
+  }
+  if (s_gyroscope_enabled)
+  {
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_PITCH_UP));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_PITCH_DOWN));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_ROLL_LEFT));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_ROLL_RIGHT));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_YAW_LEFT));
+    AddInput(new Axis(_padID, ButtonManager::WIIMOTE_GYRO_YAW_RIGHT));
+  }
 
   // Rumble
   AddOutput(new Motor(_padID, ButtonManager::RUMBLE));
diff --git a/Source/Core/InputCommon/ControllerInterface/Android/Android.h b/Source/Core/InputCommon/ControllerInterface/Android/Android.h
index 82a1a47954..c9e7ddc0a9 100644
--- a/Source/Core/InputCommon/ControllerInterface/Android/Android.h
+++ b/Source/Core/InputCommon/ControllerInterface/Android/Android.h
@@ -9,6 +9,8 @@
 
 namespace ciface::Android
 {
+void SetMotionSensorsEnabled(bool accelerometer_enabled, bool gyroscope_enabled);
+
 void PopulateDevices();
 
 class Touchscreen : public Core::Device
-- 
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