SCASM RefPoint( ind

[biggard]

Hey all,

I've recently discovered the fun of using SCASM (let's see...only about 10 years late ). While looking through the documentation, one of the commands caught my attention.

RefPoint( ind :Label scale var [...] )

This reference point is used in the aircraft model files and uses an indirect position definition.
ind the keyword IND indicates that indirect positioning is used.
var the address of the variable area that holds the current position (Lat, Lon, Alt).
[...] v1= ##, v2= ##, optional

Okay, I get the label, v1, v2 values...but I am confused on the variable used in this case. Is there a variable that contains a current position w/ lat/lon/elev?

Looking at FSInterrogate, it looks like these values would be spread across several locations.

Also, would it be possible to pass a value to that variable via dll or another source? If so, couldn't this be used to adjust object positions without having to make it dynamic scenery.

Any ideas or thoughts on this would be awesome. Thanks!

 

[arno]

Hi David,

I am not sure. In general the variables you can access still need to be within the space that FS can read. So that means the choice is limited.

I have not come across this command a lot. I thought aircraft MDL files usually used another command to set the position. Or maybe that's only in ASM code and it translates to this SCASM command.

 

[biggard]

Hey Arno, thanks for the quick response...

I am not sure. In general the variables you can access still need to be within the space that FS can read. So that means the choice is limited.

I figured that, and would most likely use the uservars (4 or 5) to pass a lat/lon/alt along (no idea what the format would need to be) as long as the aircraft was within a specific max/min lat, max/min lon box (as not to interfere with other uses of the uservars).

I have not come across this command a lot. I thought aircraft MDL files usually used another command to set the position. Or maybe that's only in ASM code and it translates to this SCASM command.

It is an interesting command, and I'm curious to see its possible use.

On a side note, I decompiled a few scasm bgls from various sceneries and I did find the use of this command in several AES sepecific files. It looks like Oliver referenced a var of "0002". I tried that and there was no result.

A similar command has me wondering too:

RefPoint( nsi :Label varptr [...] )

Referencepoint with no scale and with indirect position via varptr. (v1= ##; v2= ##; optional)

Only problem there is the lack of a definition for varptr...so I have no idea what it looks for.

 

[arno]

Hi,

Variable 0002 sounds more like a local variable inside the bgl. I use those for cat as well, but I don't think you can set them externally.

Send from my phone using Tapatalk, so excuse the short sentences and possible typos

 

[biggard]

I figured that. I'll keep poking around, hopefully I find something useful!