vector_length

[fuhrer]

im trying to measure how far away a ball is from a waypoint (height only) as the waypoint stays in one position ( on the ground) and ther ball moves on all 3 axis.

when ive tried to do it im assumin its measuring the distance between the 2 origins in a straight line..

what i need is to have it only measure the distance in height. (Z axis?)

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$ball moveDown (vector_length ($ball.origin - $ball_stop.origin))

ive tried...

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 $ball moveDown (vector_length ($ball.origin[2] - $ball_stop.origin[2]))

must be doing something wrong, please help.

[lizardkid]

you could do

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local.height = $ball.origin

and use local.height to comapre to the node. ignoring the two othr axis.

[tltrude]

If you want to see what the value is, just print it to the screen.

iprintln (vector_length ($ball.origin - $ball_stop.origin))

Here is something i used.

$ball moveto ( ($ball_target.origin[0]) ( $ball_target.origin[1]) ($ball.origin[2]) )

Notice that the origin of the third number is different from the first two. That keeps it on the ground by not letting the third number change.

[lizardkid]

you can print variables in MOHScript? cool.

[jv_map]

Actually, I think the most straightforward way to do it is the following:

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// say you have two ents $a and $b with some origin
local.origin_a = $a.origin
local.origin_b = $b.origin

// the vector from a to b now is
local.vec_ab = local.origin_b - local.origin_a

// as you only want to measure the horizontal distance,
// let's set the vertical component to 0 :)
local.vec_ab[2] = 0

// now calc the distance :)
local.distance = vector_length local.vec_ab

[tltrude]

There is a command that drops entities to the ground. I'm not sure if it will work for a script_object.

droptofloor( [ Float maxRange ] ) - drops the entity to the ground, if maxRange is not specified, 8192 is used.