[BUG_SP/Enhancement] Plough doesn' start the first path turned the correct way

[coatsy35]

READ FIRST
https://github.com/Courseplay/Courseplay_FS22/wiki

Steps to reproduce
Pick a field and create a pattern of up and down with a plough.

Actual behaviour
On the first pass of the plough, the plough is turned the wrong way with it's first furrow away from the headland. There is also a funny path thing going on right when the tractor starts the 1st pass as can be seen from the screenshot.

Expected behaviour
The plough should be turned so the first furrow is against the headland on the first run, so that subsequent runs match up.

Screenshots
Please watch the video, feel free to fast forward each pass to the end of the field. I have recorded 4 passes of the plough to show what is happening properly.

https://youtu.be/sPIIYHHEaKQ

Courseplay version

Version used: 7.4.2.0

Log
log.txt

Map
Vintage Oaks

Vehicles/ implements involved
Giants JD 6250R and Giants KV Ecomat

Relevant script mods
Mods like Autodrive or VCA and so on.

[pvaiko]

The plough should be turned so the first furrow is against the headland on the first run, so that subsequent runs match up.

Need help here with the algorithm. For each waypoint, we know:

• If the left or right (or both) side has been worked on already in a previous pass (see details here:

  Courseplay_FS22/scripts/courseGenerator/WaypointAttributes.lua

  Line 94 in 3e6189a

  --- Was the area on the left of this waypoint worked on already? Use this to determine:

  )
• We also know if it is on a headland or not.
• If not on a headland, we know if there is a headland on the left or both sides.
• We can also figure out which way are we going to turn at the end of the pass, or it is the last pass.

Now, based on all this, using as few information as possible, what would be the correct algorithm to determine which side to rotate the plow when starting a course at a given waypoint?

[coatsy35]

Hmm. Been thinking about this. Not a solution yet perhaps, but some points to consider. Obviously I am talking about reversible ploughs here as conventional ploughs are way too complicated to do correctly IMO.

1. On the first pass of a headland, the ploughs front furrow (1st furrow) should always be facing the centre of the field as CP ploughs a field "in" as we call it IRL.

2.The front furrow (1st furrow) should always face the headland when starting the field centre on the first lane - obviously if you start in the middle anything is possible, but I imagine most people start at one side and go across the field.

Is them two options possible? that way the plough would always be in the correct rotation. After the first path it would just need to make sure the front furrow was always facing the existing ploughed ground.

I'll keep thinking

[coatsy35]

@pvaiko it still starts the wrong way after loading a save unfortunately. On the headland the plough should always be the other way to my picture below, it was when I saved the game (as it had finished the centre work with the plough turned to the right, so it continued onto the headland with it turned right (which is correct), when I tried to resume it after loading in the game it turned it to the left as the picture below shows and tried to drive to the other side of the waypoint line to continue

Can it be set to remember it's position? (centre always starts on the correct side after save) as I can't now get it to turn the correct way to finish the headland without putting it back on the last centre pass and allowing it to start the headland again

What it's trying to do

What a headland rotation should always be like

[pvaiko]

@pvaiko it still starts the wrong way after loading a save unfortunately.

Ok, I see we still have a bug in there but that does not affect this, it still turns the plow to the right for me on a headland, whatever I do. Do you have a log? What plow is this?

Also, which way should it be turned on a headland around an island?

[Tensuko]

It depends on the headland direction I think.
CCW should be turned the right way.
Do we have to use the same issue for this or can we make an enhancement for that, as the original issue was plow not starting at all.

[coatsy35]

@pvaiko it still starts the wrong way after loading a save unfortunately.

Ok, I see we still have a bug in there but that does not affect this, it still turns the plow to the right for me on a headland, whatever I do. Do you have a log? What plow is this?

Also, which way should it be turned on a headland around an island?

headland will always have a plough to the right even on an island (that's assuming all island start from the outside inwards? going clockwise) If you going anti clockwise then you would be plough to the left.

The plough is a mod, let me test with a Giants plough (but I used to have it before this update on the Giants Lemken Titan 18). It only appears to do it for me if I have saved the game after it has finished it's last row and then started the headland, If I save whilst on the headland and renter the game, the first thing it wants to do is turn the plough the other way to continue. Let me see If I can get a log for you.

[coatsy35]

It depends on the headland direction I think. CCW should be turned the right way. Do we have to use the same issue for this or can we make an enhancement for that, as the original issue was plow not starting at all.

With respect Tensuko the issue of saving direction after loading the game is quite old, I reported it a good while ago now and was never fixed as I couldn't get a log that showed it, I will attempt to get one now.

[coatsy35]

Got it!

I placed myself on the first headland run, start on the right correctly. I then saved and existed the game, loaded it back in and selected start and the plough changed to the left before it would continue. Please see before and after save logs below. I was using Giants 6250R and Giants KV 7 furrow plough

log_before save.txt
log_after save.txt

Before Save

After Save