/spawn command doesn't work

[mathiascode]

The /spawn command currently doesn't work. The problem lies in ChunkStay, but I don't know what the best way would be to fix this issue.

You can reproduce the issue by downloading the latest binaries on the homepage, and executing /spawn in-game.

[ElNounch]

nil value for onChunkAvailable is what trigger the problems.
As a work-around, at https://github.com/cuberite/Core/blob/master/spawn.lua#L10

local OnChunkAvailable = function(ChunkX, ChunkZ)
end

Seems to be variadic template magic of GetStackValues (in relation with cuberite/cuberite@bf88312 may be ?).
Manually splitting into two individuals GetStackValue calls fix /spawn (https://github.com/cuberite/cuberite/blob/master/src/Bindings/ManualBindings_World.cpp#L107 ).

[madmaxoft]

Ah, it is the Lua callback rewrite, a nil is not a valid callback, so GetStackValues() corerctly reports that some of the values couldn't be read. This needs a bit more thinking. Thanks for the workaround.

[SafwatHalaby]

Related:
#170
cuberite/cuberite#3305