Captures the current mouse position, reads a target position from a file, moves the mouse to the target position without delay.

nextMonitor.au3

#include <File.au3>

; Get the current coordinates
$currentCoords = MouseGetPos()

; The x and y coordinates should be saved on one line separated by a comma. Example: 200,400
$newCoordsString = FileRead("./coordinates.txt")

; Close the file after reading
FileClose("./coordinates.txt")

; Split the string into an array using comma as the delimiter
$newCoords = StringSplit($newCoordsString, ",")

; Move the mouse to the new coordinates
MouseMove($newCoords[1], $newCoords[2], 0)

; Open the file for writing and overwrite the original coordinates
$file = FileOpen("./coordinates.txt", 2)

; Check if the file opened for writing OK
If $file = -1 Then
    MsgBox(0, "Error", "Unable to open file.")
    Exit
EndIf

FileWrite($file, $currentCoords[0] & "," & $currentCoords[1])

; Close the file
FileClose($file)

Exit