RVs do to obtain a slot if too far away from st->xy

[DorpsGek]

Celestar opened the ticket and wrote:

If a station has a very high spread, and the distance between a roadstop and the station xy tile is too large, no slot is being obtained whatsoever for Road Vehicles.

Solutions:

1. Don't assign a slot at a minimum distance of 16, but at a distance of maximum_station_spread * 2 + 1.
2. Don't assign a slot at a minimum distance of 16, but at a distance of the spread of the station in question + 1.
3. Compute the distance not between the RV and st->xy but between the RV and the xy of the Primary Road Stop.

Reported version: trunk
Operating system: All

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This issue was imported from FlySpray: https://bugs.openttd.org/task/577

[DorpsGek]

Celestar closed the ticket.

Reason for closing: Fixed

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This comment was imported from FlySpray: https://bugs.openttd.org/task/577