// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Morse word encoder
// Not compiled or tested in-world
// Setup: Owner-touch, then type up to 12 letters without spaces.
// Stop / restore: Stop responding and the listener closes after 90 seconds, or remove/disable the script. Owner-touch restarts the exercise.
// Notes: Owner-only local exercise; no prizes, visitor records, network service, or persistent scores. Uses international Morse A–Z only. Output is text, not audio or emergency signaling.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Not compiled or tested in-world.
integer channel;
integer handle;
close()
{
    if(handle)llListenRemove(handle);
    handle=0;
    llSetTimerEvent(0.0);
}
ask(string prompt)
{
    if(!handle)
    {
        channel=-1000-(integer)llFrand(1000000.0);
        handle=llListen(channel,"",llGetOwner(),"");
    }
    llTextBox(llGetOwner(),prompt,channel);
    llSetTimerEvent(90.0);
}
list codes=[".-","-...","-.-.","-..",".","..-.","--.","....","..",".---","-.-",".-..","--","-.","---",".--.","--.-",".-.","...","-","..-","...-",".--","-..-","-.--","--.."];
start()
{
    ask("Enter 1-12 letters A-Z to encode as Morse.");
}
answer(string s)
{
    s=llToUpper(s);
    integer length=llStringLength(s);
    if(length<1||length>12)
    {
        ask("Use 1-12 letters.");
        return;
    }
    list out;
    integer i;
    for(i=0;i<length;++i)
    {
        integer p=llSubStringIndex("ABCDEFGHIJKLMNOPQRSTUVWXYZ",llGetSubString(s,i,i));
        if(p<0)
        {
            ask("Letters A-Z only.");
            return;
        }
        out+=[llList2String(codes,p)];
    }
    close();
    llOwnerSay(s+": "+llDumpList2String(out," "));
}
default
{
    touch_start(integer count)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        close();
        start();
    }
    listen(integer ch,string name,key id,string message)
    {
        if(!handle||ch!=channel||id!=llGetOwner())return;
        answer(llStringTrim(message,STRING_TRIM));
    }
    timer()
    {
        close();
        llOwnerSay("Exercise paused. Touch to restart.");
    }
    changed(integer change)
    {
        if(change&CHANGED_OWNER)llResetScript();
    }
}