Simple Walk 2.0 for OpenSim

//
// Simple Walk
// Copyright (c) 2009, the owner of avatar Catherine Pfeffer
// Distributed under GPL license version 2
// See details at http://www.gnu.org/licenses/gpl-2.0.html

// Change to changed event to make script lighter
string VERSION = "2.0";

string animation;
key owner;

default
{
    state_entry()
    {
        integer perms = llGetPermissions();

        animation = llGetInventoryName(INVENTORY_ANIMATION, 0);
        owner = llGetOwner();

        llSetAlpha(0.0, ALL_SIDES);
        llOwnerSay("version " + VERSION + ".");

        if (perms & PERMISSION_TRIGGER_ANIMATION)
            state enabled;
        llRequestPermissions(llGetOwner(),
            PERMISSION_TRIGGER_ANIMATION);
    }

    run_time_permissions(integer perms)
    {
        if (perms & PERMISSION_TRIGGER_ANIMATION)
        {
            state enabled;
        }
    }
}

state enabled
{
    state_entry()
    {
        llOwnerSay("ready.");
    }

    attach(key _av)
    {
        llResetScript();
    }

    changed(integer _ch)
    {
        if(( _ch & CHANGED_ANIMATION) == CHANGED_ANIMATION)
        {
            string anim = llGetAnimation(owner);
            // llSay(0, "CH: " + anim);

            if (llGetAnimation(llGetOwner()) != "Walking")
            {
                llStopAnimation(animation);
            }
            else
            {
                llStartAnimation(animation);
            }
        }
    }
}