* Support doors and trapdoors from mods
Removed hardcoded door names and instead now use the API of the door mod to meseconify all doors and trapdoors that have been registered after the mods are finished loading.
* indentation as described by sfan5
now trapdoors are also overridden using their own function, and both
`meseconify_door` and `meseconify_trapdoor` are now ran inside loops
In the future, this could help refactor this mod entirely to not list doors
manually but parse through the `doors.registered_*` variables,
ensuring that every door works.
As a nice bonus, Voxelgarden support is fixed, and potentially so is
support for other games with exotic implementations of the doors mod. No
longer are we assuming that the existence of doors.get means that all
the trapdoors exist too; now, if the meseconify function doesn't find
their definition, it just returns without crashing.
I've implemented a new door API in minetest_game that
performs all the needed things to assure doors are
properly openend and closed, without mods needing to
know the inner details of what needs to be done.
Mesecons can just fetch a reference to the door object
and call the appropriate open or close method, which
simplifies this code a lot.
For compatibility, this code retains the old code path
and tests whether the new API is available, so this
code remains functional if the new API is not available.
Since the metal trapdoor was only recently added, I added
it to the new API codepath only, it's unlikely to be
present on older versions of minetest_game anyway.
As a benefit from the new door API, there is now
absolutely no more accidental switching closed trapdoors
to open on power off, which could happen with the
old method - since that was just a simple toggle.
* Enable glass and obsidian glass doors to be used with mesecons
* Doors can receive signals from a vertical wire placed two
blocks beneath them, use this to create mesecon-controlled
double doors
* Fix textures for both git upstream and stable minetest_game
* Shrink code size
* Rename mesecons_compatibility to mesecons_doors.
