[bug + fix] ONLY_TUNNELS_BELOW_GROUND won't work correctly

[gerw]

If you compile simutrans with ONLY_TUNNELS_BELOW_GROUND you aren't able to build tunnels anymore. This is fixed with this patch.

The patch als fixes the bug displayed in the attached image (you can build a tunnel if the ending tile contains a way but no slope).

[prissi]

Building a tunnel to a vertical slope was once a hidden feature though ...

[z9999]

Will ONLY_TUNNELS_BELOW_GROUND work well with current version ?
Now it's time to activate this as default, isn't it ?

[Dwachs]

yes, I am all for deactivating the harbour tunnels. At least, since rev. 2547 tunnels through open water are forbidden.

[z9999]

 
But I can still build it in r2550.

[Dwachs]

This is 'intended'. I meant tunnels under sea level into the sea, as in here:

http://forum.simutrans.com/index.php?topic=2549.0

[prissi]

As soon as the slope building is working on all levels as intended, harbour tunnel should be disabled. I think so too. But then we need to improv all Undergrund modus (maybe with transparent sea tiles)

[Isaac Eiland-Hall]

(maybe with transparent sea tiles)

Thumbs up!