Course between 2 waypoints

[Mistermann]

I hope I am simply over complicating this.

I am creating a mission where I want to send a radio message to the player to change course a certain number of degrees.  For instance, calling a 15° course change to the left.  I have the following waypoints defined in the mission editor and want to issue a message to the player to turn left a certain number of degrees at WP2 in order to head to WP3.

These radio calls will be part of a formation flight where the player isn't the lead.  The lead flight will call turns.  Ideally, I'll have a message saying something like - "20° left turn on my mark".

I know I have Lat/Long of the waypoints and can do some complex math (for me) to figure out the bearing line between waypoints and then compare to existing planned course.  My head is starting to hurt thinking about this.

Is there anything in the ME that tells me this information?

If not [GULP], what suggestions do the mission editor wizards have for me?

As a last resort, I could fly the mission and write down the course changes.  

[toutenglisse]

2 hours ago, Mistermann said:

... Ideally, I'll have a message saying something like - "20° left turn on my mark"...

Hi, you can use the script in my example attached. (you can play it in accelerated time to see messages when WP change)

For it to work requires :

1) MIST loaded at start + a "DoScript" action where you copy the script,

2) Edit the first 2 lines to adapt the name of the group (named "test" in example) and the WP number (+1) you want to start having messages (WP 1 in example, so j = 2),

3) For each WP (in a row!) you want messages (in example : from 1 to 8 ) add an advanced action / command / script : announce().

test-heading-on-WP-change.miz

[Mistermann]

Thanks!  I'll see if I can check it out today.  Thanks for posting/responding, @toutenglisse!

[Rokkett]

You can simply calculate the change in bearing using the ruler tool, which shows heading.

[Mistermann]

Thanks @Rokkett - That method is a bit less precise than I was after.  Is that angle 45°?  Or possibly 38°?  The old Mk-1 Eyeball is okay for ballparking it.  I was hoping for a more precise way to do this.  I am starting to think I just need to establish the waypoints and assign an AI flight to it.  Start the mission and monitor the AI flight from a chase view.  Write down the course changes and bam, that's what I need. 

That probably answers my initial question with the least amount of number crunching and eyeball estimates.

Thanks all!!

[Rokkett]

Perhaps I didn't explain it fully, but u can get a more precise heading change other than just eyeballing it.

In my example, using the ruler, the original course, A, is 084 degrees.

Again using the ruler, the new course, B, is 044 degrees.

Therefore, heading change is A-B = 40 degrees left.

Edited February 1, 2022 by Rokkett

[Mistermann]

Ahhhhhbh.  That's my bad.  Great call!  Thanks.