// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Two-flea tabletop race
// Not compiled or tested in-world
// Setup: Enter roll. A and B alternate; first to reach20 wins. Owner-touch initializes; enter reset to restart. Text input closes after90seconds.
// Stop / restore: Close or ignore the text box, or remove the script. It changes no world objects, avatar state or inventory.
// Notes: Original bounded, manually stepped educational toy. Not a calibrated simulator, real-world control system, or live scientific measurement. A single owner operates both fictional racers. It is not network multiplayer or a betting system.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Not compiled or tested in-world.
integer channel;
integer handle;
integer a;
integer b;
integer turn;
integer done;
close()
{
    if(handle)llListenRemove(handle);
    handle=0;
    llSetTimerEvent(0.0);
}
start()
{
    a=0;
    b=0;
    turn=0;
    done=FALSE;
}
string view()
{
    return "A "+(string)a+"/20 | B "+(string)b+"/20 | next "+llList2String(["A","B"],turn);
}
show()
{
    llOwnerSay(view());
    if(!handle)
    {
        channel=-1000-(integer)llFrand(1000000.0);
        handle=llListen(channel,"",llGetOwner(),"");
    }
    llTextBox(llGetOwner(),"Enter roll. A and B alternate; first to reach20 wins. Type reset to restart.",channel);
    llSetTimerEvent(90.0);
}
default
{
    touch_start(integer n)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        close();
        start();
        show();
    }
    listen(integer incomingChannel,string name,key id,string s)
    {
        if(!handle||incomingChannel!=channel||id!=llGetOwner())return;
        s=llToLower(llStringTrim(s,STRING_TRIM));
        if(s=="reset")start();
        else
        {
            if(s=="roll"&&!done)
            {
                integer die=1+(integer)llFrand(6.0);
                llOwnerSay("Rolled "+(string)die);
                if(turn)b+=die;
                else a+=die;
                if(a>=20||b>=20)
                {
                    done=TRUE;
                    llOwnerSay(llList2String(["A","B"],turn)+" wins.");
                }
                else turn=!turn;
            }
        }
        show();
    }
    timer()
    {
        close();
    }
}