// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Vehicle speed display
// Not compiled or tested in-world
// Setup: Put in the root of a moving object or a suitable attachment. Owner-touch turns the instrument on and off.
// Stop / restore: Touch to stop and restore the original hover text before removal.
// Notes: Reads existing velocity only; it never changes physical status, vehicle settings, or movement. Teleports and scripted position jumps need not appear as meaningful velocity.
// License: see LICENSE in this distribution.
// Original Incoprea example. MIT. Not compiled or tested in-world.
integer active;
list original;
default
{
    state_entry()
    {
        original = llGetLinkPrimitiveParams(LINK_THIS, [PRIM_TEXT]);
    }
    touch_start(integer count)
    {
        if (llDetectedKey(0) != llGetOwner()) return;
        active = !active;
        if (active) llSetTimerEvent(0.5);
        else
        {
            llSetTimerEvent(0.0);
            llSetLinkPrimitiveParamsFast(LINK_THIS, [PRIM_TEXT] + original);
        }
    }
    timer()
    {
        float speed = llVecMag(llGetVel());
        llSetText((string)(llRound(speed * 10.0) / 10.0) + " m/s\n"
        + (string)(llRound(speed * 36.0) / 10.0) + " km/h", <0.7, 1.0, 0.8>, 1.0);
    }
}