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#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
; #Warn  ; Enable warnings to assist with detecting common errors.
SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.
SetWorkingDir %A_ScriptDir%  ; Ensures a consistent starting directory.

#SingleInstance, force
#include vjoy_lib.ahk

;Initialising variables
vjoy_id := 1
vjoy_init(vjoy_id)
AxisValue = 16400 ;Max value is 32767
;This value controls the velocity that the axis gets updated
SleepSpeed = 20
;This value controls the increments that the joystick axis increases or reduces each iteration
AxisIncrement = 100

;Checking for at least one axis enabled in VJoy
if (!VJoy_GetAxisExist_X(vjoy_id)){
	msgbox Please enable the X axis of vjoy ID %vjoy_id% using the vJoy config utility.
}

~[ACCELERATE_KEY]::
;Loops so acceleration is linear, otherwise it depends on charater repeat delay of the keyboard
Loop
{
	;While key is down update the VJoy axis according to the conditions
    	GetKeyState, state, [ACCELERATE_KEY]
	If state= D
	{
		;If the axis value is below half automatically puts it on half
		If AxisValue<16400)
			AxisValue=16400

		;If the axis value is below maximum increment it
		If AxisValue<32767)
			AxisValue += AxisIncrement

		;If the axis value is on maximum or above it set it to maximum
		Else
			AxisValue=32767

		;Update the VJoy axis value
		VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
		Sleep, SleepSpeed
	}
	;Else break from loop
	Else
	Break
}	
Return

~[DECELERATE_KEY]::
Loop
{
    	GetKeyState, state,[DECELERATE_KEY]
	If state= D
	{
		;The axis does not have values less than 0
		if (AxisValue<0)
		{
			AxisValue=0
			VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
			Sleep, SleepSpeed
			Return
		}
		else
		{	
			;If the value is less than half...
			if (global AxisValue<=16400)
			{
				Loop
				{
					;... and the deaccelerate key is being pressed, set it to 0
					GetKeyState, state2, [DECELERATE_KEY]
					If state2=D
					{
						AxisValue=0
						VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
						Sleep, SleepSpeed
					}
					;... or set it to half
					else
					{
						AxisValue=16400
						VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
						Sleep, SleepSpeed
						break
					}
				}
			}
			;Otherwise decrement from the axis
			else
			{
				AxisValue -= AxisIncrement
				VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
				Sleep, SleepSpeed
			}
		}
	}
	Else
	Break
}	
Return

;Instantly set the axis to maximum
~[MAXIMUM_KEY]::
AxisValue=32767
VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
return

;Instantly set it to a value slightly below half, for a "soft" landing
~[LANDING_KEY]::
AxisValue=16100
VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
Return

;Instantly set it to a value slightly above half, near most helis hover value
~[HOVER KEY]::
AxisValue=21100
VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
return

;Instantly set it to 0
~[ZERO_THROTTLE_KEY]::
AxisValue=0
VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
return

;Press this button before mapping the accelerate button, this makes the axis increase over some time so PR can detect the axis
~F10::
AxisValue=16400
Sleep, 2000
Loop, 200
{
AxisValue+=100
VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
Sleep, 40
}
Return

;Toggle to suspend all hotkeys but does not close the program
~F11::
Suspend
Return

;Closes the program
~F12::
ExitApp
Return

;Very small and slow increment, for when you wanna try to reach perfect hover
~[INCREMENT_KEY]::
Loop
{
    	GetKeyState, state, SC04A
	If state= D
	{
		AxisValue+=5
		VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
		sleep, 100
	}
	else
		Return
}

;Very small decrement
~[DECREMENT_KEY]::
Loop
{
    	GetKeyState, state, SC04E
	If state= D
	{
		AxisValue-=5
		VJoy_SetAxis(AxisValue, vjoy_id, HID_USAGE_X)
		Sleep, 100
	}
	else
		Return
}