Ships are not build in close proximity to the shipyard

[Toni Förster]

After building a shipyard next to a sea tile the expected construction site should be 1 unit away from the building's flagpole. However, on the horizontal it is at least 3 units away and on the vertical axis 5 units.

https://fosuta.org/pics/Shipyard_wrong.png

The only way to force the shipwright to build the ship as close as possible to the shipyard, is to build roads on the shore.

https://fosuta.org/pics/Shipyard_1unit.png

Since shipbuilding is a time consuming process the additional time spend is not insignificant:

1 Unit: 20 minutes 43 seconds

3 Units: 22 minutes 39 seconds (+9.2%)

5 Units: 24 minutes 34 seconds (+18,5%)

This was discovered during a conversation about production times in the forum:

https://wl.widelands.org/forum/topic/4299/?page=2

I'm not sure if this bug here is anyhow related:

https://bugs.launchpad.net/widelands/+bug/1554267

I tested this with trunk_8771 on macOS 10.13.6.

[GunChleoc (gunchleoc)]

Migrated to https://github.com/widelands/widelands/issues/1076