Lua Question

Matrix Games Forums

Forums Register Login Photo Gallery Member List Search Calendars FAQ

My Profile Inbox Address Book My Subscription My Forums Log Out

Lua Question

View related threads: (in this forum | in all forums)

Logged in as: Guest

Users viewing this topic: none

Printable Version

All Forums >> [New Releases from Matrix Games] >> Command: Modern Operations series >> Mods and Scenarios >> Lua Question

Page: [1]

Message

<< Older Topic Newer Topic >>

Lua Question - 1/4/2016 6:11:55 PM

Primarchx

Posts: 3102
Joined: 1/20/2013
Status: offline

I'd like to create a quasi-linked set of RPs for Side B that tracks the movement of Side A.

I see it working something like this..

Use ScenEdit_GetUnit (unit) to extract the latitude and longitude of the Side A unit I want to track. I assume since ScenEdit_GetUnit (unit) returns a Unit data set with that info in it, it should be accessible by putting the pertinent Lat/Long variables it into the ScenEdit_SetReferencePoint (descriptor) with some offsets attached (say Lat/Long +/- 1 minute for each of the four points of a tracking box) which can be set up for Side B.

So every once in a while Side A's ship has this function run on it to create an RP box around it on the B side, accurate at that time.

Not being a Lua wiz, I'm not sure how to extract or address the info I need to make this work.

Any ideas? Thanks!

< Message edited by Primarchx -- 1/4/2016 7:13:13 PM >

Post #: 1

RE: Lua Question - 1/4/2016 6:15:17 PM

ckfinite

Posts: 377
Joined: 7/20/2013
Status: offline

Yep, that's totally possible, and I did something similar to it for my upcoming Tam Kung scene, to indicate where boats to rescue could be. I can't get the code right now, but will when I get home. In the meantime, if you want, try out the new Q&A site - it's meant for this kind of question, and should be less rubbish to search

(in reply to Primarchx)

Post #: 2

RE: Lua Question - 1/4/2016 6:19:10 PM

Primarchx

Posts: 3102
Joined: 1/20/2013
Status: offline

quote:

ORIGINAL: ckfinite

Yep, that's totally possible, and I did something similar to it for my upcoming Tam Kung scene, to indicate where boats to rescue could be. I can't get the code right now, but will when I get home. In the meantime, if you want, try out the new Q&A site - it's meant for this kind of question, and should be less rubbish to search

Thanks! I was just on the FAQ site, too, but I was thinking this might need some 'discussion' to clarify so started here. Definitely worth the FAQ site, though!

(in reply to ckfinite)

Post #: 3

RE: Lua Question - 1/4/2016 7:49:29 PM

Yokes

Posts: 298
Joined: 3/14/2007
Status: offline

Primarchx,

As you said, you use the "GetUnit" function and assign the results to a variable. You then can access the sub-components of that variable using the "." operator.

Example:
a = ScenEdit_GetUnit({side="SideA", name="Unit Name"})
ID = a.guid

This accesses the GUID. You can do the same with lat/lon.

By the way, you can also do this by enabling "God's eye" mode and setting the reference points as relative to the unit.

Yokes

(in reply to Primarchx)

Post #: 4

RE: Lua Question - 1/4/2016 8:09:54 PM

Primarchx

Posts: 3102
Joined: 1/20/2013
Status: offline

Thanks, Yokes! Didn't know the God Eye mode would let you do that. That's a nice short cut! I'll use the . operator to access the proper element of the Unit data structure.

(in reply to Yokes)

Post #: 5

RE: Lua Question - 1/4/2016 11:36:04 PM

ckfinite

Posts: 377
Joined: 7/20/2013
Status: offline

Okay, at home now. To use (most) of my code, you'll need my math library, just paste it into a lua script that runs on startup.

Then, here's the function I use to generate a circle with some random error (so that the target isn't always centered):

local function circle_around(side, point, error, radius, number, naming)
	local center = (Quaternion.fromEuler(rng()*error,0,0)*Quaternion.fromEuler(0,0,rng() * 2 * math.pi)) * Quaternion.new(point)
	-- debug, real center ScenEdit_AddReferencePoint(point ^ {side=side, name = naming(0)})
	local angle = Quaternion.fromEuler(radius,0,0)
	local rps = {}
	for i=1,number do
		rp = ScenEdit_AddReferencePoint((angle * center):toPoint() ^ {side=side, name = naming(i)})
		angle = angle * Quaternion.fromEuler(0,0,2*math.pi/number)
		table.insert(rps, rp.guid)
	end
	return rps
end

side is the side you want to make the RPs on, point is a new Point object (make it with Point.new([getunit call])) that represents the point that is the "real" location of the target, error is the maximum distance from the actual center you want to draw the circle, radius is the radius of the circle of RPs, number is the number of RPs to make (if you want to make a square, set this to 4), and naming is a function that given the number of the RP around the circle (from north clockwise), provides the name of the RP (e.g. function (number) return "RP-"..number end)

(in reply to Primarchx)

Post #: 6

RE: Lua Question - 1/4/2016 11:45:34 PM

ckfinite

Posts: 377
Joined: 7/20/2013
Status: offline

Oh, and you'll also need