;The SendInput DllCall is specifically 32-bit. So check for the correct bitness of AutoHotkey and if not, try to run the right one.
If (A_PtrSize=8){
    SplitPath, A_AhkPath,,Dir
    Run %Dir%\AutoHotkeyU32.exe %A_ScriptFullPath%
    ExitApp
}

;Call below to accelerate the mouse input. The first two parameters are the integer factors of artificial amplification added on top of the physical input.
;The first is for horizontal/x-axis movement, the second for vertical/y-axis movement.
new MouseAccelerator(0, 1)

F12::ExitApp


; Gets called when mouse moves or stops
; x and y are DELTA moves (Amount moved since last message), NOT coordinates.
MouseAcceleratorEvent(x := 0, y := 0, accelerationx := 2, accelerationy := 2){
    static MouseAcceleratorPaused
    If !(MouseAcceleratorPaused){
        MouseAcceleratorPaused:=true
        VarSetCapacity( MouseInput, 28, 0 )
        NumPut( x * accelerationx, MouseInput, 4, "Int" ) ; dx
        NumPut( y * accelerationy, MouseInput, 8, "Int" ) ; dy
        NumPut( 0x0001, MouseInput, 16, "UInt" ) ; MOUSEEVENTF_MOVE = 0x0001
        DllCall("SendInput", "UInt", 1, "UInt", &MouseInput, "Int", 28 )
        sleep,-1
        MouseAcceleratorPaused:=false
    }
}

; ================================== LIBRARY ========================================
; Instantiate this class and pass it a func name or a Function Object
; The specified function will be called with the delta move for the X and Y axes
; Normally, there is no windows message "mouse stopped", so one is simulated.
; After 10ms of no mouse movement, the callback is called with 0 for X and Y
; https://autohotkey.com/boards/viewtopic.php?f=19&t=10159
Class MouseAccelerator {
    __New(accelerationx:=2, accelerationy:=2, callback:="MouseAcceleratorEvent"){
        static DevSize := 8 + A_PtrSize
        static RIDEV_INPUTSINK := 0x00000100

        this.TimeoutFn := this.TimeoutFunc.Bind(this)

        this.Callback := callback
        this.Accelerationx := accelerationx
        this.Accelerationy := accelerationy
        ; Register mouse for WM_INPUT messages.
        VarSetCapacity(RAWINPUTDEVICE, DevSize)
        NumPut(1, RAWINPUTDEVICE, 0, "UShort")
        NumPut(2, RAWINPUTDEVICE, 2, "UShort")
        NumPut(RIDEV_INPUTSINK, RAWINPUTDEVICE, 4, "Uint")
        ; WM_INPUT needs a hwnd to route to, so get the hwnd of the AHK Gui.
        ; It doesn't matter if the GUI is showing, it still exists
        Gui +hwndhwnd
        NumPut(hwnd, RAWINPUTDEVICE, 8, "Uint")

        this.RAWINPUTDEVICE := RAWINPUTDEVICE
        DllCall("RegisterRawInputDevices", "Ptr", &RAWINPUTDEVICE, "UInt", 1, "UInt", DevSize )
        fn := this.MouseMoved.Bind(this)
        OnMessage(0x00FF, fn)
    }