On-touch altimeter

Heya folks - this is probably a really simple one, but it's been nagging me.

I'm in the process of building some aircraft, and would like to include an altimeter as one of its functions. I'd like the readout to be 'said' by the touched object, and for it to give the current distance above ground level. How would this be scripted?

Ultimately I'd like a velocity readout as well, but I'm content to tackle on thing at a time!

Something like this:

	touch_start(integer total_number)
	{
		float currentHeight = llGetPos().z - llGround(ZERO_VECTOR);
		llSay(0,"Current Height: " + (string)currentHeight );
	

Thanks for getting back to me!

I'm probably missing some fundemental basic of scripting, but when I attempt to save it there is apparently a syntax error in llGetPos().z

For the sake of seeing whether it's a stupid mistake on my part, the entirity of my script is:

default
{

touch_start(integer total_number)
{
float currentHeight = llGetPos().z - llGround(ZERO_VECTOR);
llSay(0,"Current Height: " + (string)currentHeight );
}
}

What is the error you are getting?

(5, 32) : ERROR : Syntax error

The pipe is flashing between llGetPos() and .z - llGround(ZERO_VECTOR);

Try this instead:

	touch_start(integer total_number)
	{
		vector pos = llGetPos()
		float currentHeight = pos.z - llGround(ZERO_VECTOR);
		llSay(0,"Current Height: " + (string)currentHeight );
	}

AHA! That's perfect! Thank you ever so much - I owe you a pint, or an airship.