// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Linked switch with status reply
// Not compiled or tested in-world
// Setup: Put this script in two linked prims. Name one panel_button and the other panel_indicator. Owner-touch the button.
// Stop / restore: Turn off, then remove both copies. Indicator restores its original hover text when off.
// Notes: Same code handles either role. Message code 7821 is private to the linkset, not secret from other scripts inside it. Replies never echo as commands.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Not compiled or tested in-world.
integer on;
list original;
default
{
    state_entry()
    {
        original=llGetLinkPrimitiveParams(LINK_THIS,[PRIM_TEXT]);
    }
    touch_start(integer n)
    {
        if(llDetectedKey(0)!=llGetOwner()||llGetObjectName()!="panel_button"||llDetectedLinkNumber(0)!=llGetLinkNumber())return;
        llMessageLinked(LINK_ALL_OTHERS,7821,"toggle",NULL_KEY);
    }
    link_message(integer sender,integer code,string message,key data)
    {
        if(code!=7821)return;
        if(llGetObjectName()=="panel_indicator"&&llGetLinkName(sender)=="panel_button"&&message=="toggle")
        {
            on=!on;
            if(on)llSetText("Indicator ON",<0.5,1.0,0.7>,1.0);
            else llSetLinkPrimitiveParamsFast(LINK_THIS,[PRIM_TEXT]+original);
            llMessageLinked(sender,7821,"status:"+(string)on,NULL_KEY);
        }
        else if(llGetObjectName()=="panel_button"&&llSubStringIndex(message,"status:")==0)llOwnerSay(message);
    }
}