Terraria Auto-Clicker

#include <Misc.au3>
Opt("TrayIconHide", 1)

Msgbox(0, "Terraria Auto-clicker", "Waiting for Terraria...")
while 1
    if ProcessExists("Terraria.exe") then
        Msgbox(0, "Terraria Auto-clicker", "Auto-clicker Activated" & @CRLF & @CRLF &"Press 'U' To Exit" & @CRLF & "Press And Hold 'R' To Rapid Left-Click" & @CRLF & "Press 'T' To Hold Left Mouse Down, And Again To Stop It")
        while ProcessExists("Terraria.exe")
            if _Ispressed("54") then
                mouseDown("Left")
                sleep(100)
                while 1
                    if _Ispressed("54") then
                        mouseup("left")
                        ExitLoop
                    EndIf
                    sleep(50)
                WEnd
            EndIf
            sleep(50)

            while _Ispressed("52")
                mouseclick("left")
                sleep(5)
            wend
            sleep(50)

            if _ispressed("55") then
                ExitLoop
            endif

            while NOT Winactive("Terraria") AND ProcessExists("Terraria.exe")
                sleep(5)
            wend
            sleep(50)
        wend
        MsgBox(0, "Terraria Auto-Clicker", "Auto-Clicker Closing" & @CRLF & @CRLF & "Thank you for using Terraria Auto-Clicker. Made by Miffy")
        exit
    endif
    sleep(500)
wend