Toggle between scripts?

Does anyone know if there's an easy way to toggle between two scripts?

For example. I made a sentry drone that will follow my camera. I also made one that will wander around by itself.

If I wanted to put both of those scripts in the same drone, is there a way to tell it to shut down one script and fire up the other script on command, and switch back with the same command?

you can use one script and have it change states instead

I'm intrigued... How would that work?

Try

integer CHAN = 25; //Your channel goes here
integer handle;
default
{
state_entry()
{
handle = llListen(CHAN, "",llGetOwner(),"");
}
listen (integer channel, string object, key id, string message)
{
if (llToUpper(message) =="WANDER")
{
//Wander loosely on your own and do stuff
}
else if (llToUpper(message) == "CAMERA")
{
llListenRemove(handle);
state camera;
}
}

state camera
{
state_entry()
{
handle = llListen(CHAN,"",llGetOwner(),"");
}
listen (integer channel, string object, key id, string message)
{
if(llToUpper(message) == "CAMERA")
{
//Follow the camera and do stuff
}
else if (llToUpper(message) == "WANDER")
{
llListenRemove(handle);
state default;
}
}

or you could do everything in a single state and use your message ("CAMERA" or "WANDER" to switch between functions.

Beware: I make typos. This is a schematic script.

Using state is the better way, but as always, at least a dozen ways to do the same thing.
You can also use LinkMessages to tell the other script to start/stop and or use SetScriptState to stop the scripts. You can either use put the LinkMessage or SetScriptState in the scripts themselves or use a controller script.

if the scripts use very similar code you don't even need 2 states, just some if/elses and a single integer switch if they have wildly different code I'd go with the different states, and if they have lots of wildly different cods you could use a controller script and the two separate scripts, setting them to running or not running via llSetScriptState (you may want use either lSO compiled scripts for that, or llResetOtherScript, as mono scripts that aren't running when they cross sim boundries or go to inventory get reset anyway... you can call reset of non-running scripts before setting them active again)