Comparing ASL

[daza 36]

How do you compare the distance of two objects vertically in a waituntil condition?

Ive tried using getposasl of two objects then eg in condition obj1==obj2 but i get an error.

Or would distance be just as sufficient? Im using distance at the moment, but i was hoping for more precise check. Its for a Helicopter land on Frigate script ive put together.

Thanks

Daza

[Ghost 40]

http://community.bistudio.com/wiki/getPosASL

you have to do something like the example from the link

hint format["position above sea level: %1",(getPosASL player) select 2]

select 0 = x, select 1 = y, select 2 = z

so maybe something as follows

if ((getposasl UNIT1) select 2) < (getposasl UNIT2) select 2)) then {

hint format ["Unit1 is %1 \n Unit2 is %2", (getposasl UNIT1) select 2),(getposasl UNIT1) select 2)];
};

give it a shot, might need tweaking. Its late so I might not make much sense atm. Hope it helps anyway.

[daza 36]

Thanks Ghost for your suggestion. Couldn't get it to work. Still i learnt something

that was missing in the wiki, which is the select 0 = x, select 1 = y, select 2 = z

you mentioned.

It didnt like the syntax in the hintformat either, i haven't seen that method of use before.

Anyway so what i did in the end, since you can land on the back of the ship was just checked when helicopter/pilot turned off engine and used that as my condition to show

addaction option of securing chopper to deck. And it works.

[Ghost 40]

yea sorry about that i forgot extra (. but it works just fine for me. No with that you could just subtract one from the other. But guess your other method is working so thats great!

hint format ["Unit1 is %1 \n Unit2 is %2", ((getposasl UNIT1) select 2),((getposasl UNIT2) select 2)];

[galzohar 31]

waitUntil {abs ((getPosASL obj1 select 2) - (getPosASL obj2 select 2)) < _epsilon};

Where _epsilon is some small number, the bigger it is the more leeway you have in terms of height difference (that is, if _epsilon = 0.1 their height difference must be less than 10cm). If you just wait until they're equal they probably never will be, as positions are not round numbers and thus you should never assume that they would ever be equal. Abs makes it so that you get the actual (positive) z distance between them and not difference in their z values.