CLOSES #1367, CLOSES #1585, CLOSES #1611, CLOSES #1612, CLOSES #1636, CLOSES #1638, CLOSES #1641

src/core/GamepadMap.lua

@@ -106,6 +106,17 @@ function GamepadMap.ignoreRawForJoystick(joystick)
   return ok and isPad == true
 end
 
+-- conf.lua turns the mobile accelerometer-joystick off (#468), but guard the
+-- generic joystick path anyway: any sensor-style device that still reaches us
+-- has gravity pinning an axis past the deadzone, which would hide the touch
+-- overlay every instant and steer the player by tilt through the axis-1/2
+-- mapping (#459).  Real controllers arrive as SDL gamepads or named sticks,
+-- never as "* Accelerometer".
+function GamepadMap.isAccelerometer(joystick)
+  local name = joystick and joystick.getName and joystick:getName()
+  return name ~= nil and name:lower():find("accelerometer", 1, true) ~= nil
+end
+
 function GamepadMap.mapRawButton(index)
   if nxActive() then
     local nx = GamepadMap.NX_RAW_BUTTON_BINDINGS[index]