Add support for Minetest

[acs]

Analyze and implement what is needed in McThings so it works with Minetest: https://www.minetest.net/

Minetest has support also for the Python API: https://github.com/arpruss/raspberryjammod-minetest

So it should work out of the box mainly.

[acs]

Ok, time to start testing it! The plan is to

• Start using minetest server and client
• Install the plugin for the server and test that it works

[acs]

[~]$ sudo dnf install minetest

Running transaction
  Preparing        :                                                                                                                                                                                                                      1/1 
  Running scriptlet: minetest-server-5.1.0-3.fc32.x86_64                                                                                                                                                                                  1/4 
  Installing       : minetest-server-5.1.0-3.fc32.x86_64                                                                                                                                                                                  1/4 
  Running scriptlet: minetest-server-5.1.0-3.fc32.x86_64                                                                                                                                                                                  1/4 
  Installing       : libaesgm-20090429-22.fc32.x86_64                                                                                                                                                                                     2/4 
  Installing       : irrlicht-1.8.4-11.fc32.x86_64                                                                                                                                                                                        3/4 
  Installing       : minetest-5.1.0-3.fc32.x86_64                                                                                                                                                                                         4/4 
  Running scriptlet: minetest-5.1.0-3.fc32.x86_64                                                                                                                                                                                         4/4 
  Verifying        : irrlicht-1.8.4-11.fc32.x86_64                                                                                                                                                                                        1/4 
  Verifying        : libaesgm-20090429-22.fc32.x86_64                                                                                                                                                                                     2/4 
  Verifying        : minetest-5.1.0-3.fc32.x86_64                                                                                                                                                                                         3/4 
  Verifying        : minetest-server-5.1.0-3.fc32.x86_6

[acs]

It it easy (just to drop the mod inside the folder

/home/adelcastillo/.minetest/mods/raspberryjammod

and when you are creating a new world, go to configure and enable the mod:

but there are issues with it:

something that it is normal because it seems the mod was developed under windows, and it has no changes for the last 4 years.

[acs]

It is time to start debugging a bit because probably it needs some change in Linux. In the code I can see:

local status,err = pcall(function() socket = ie.require("socket.core") end)
if not status then
   socket = ie.require("socket.cx64")
end

so it seems it can not find the socket.core.

I have already installed:

Package lua-socket-3.0-0.22.rc1.fc32.x86_64 is already installed.

so the problem should be other. So we need to start learning a bit more about Lua!

[acs]

The complete log is:

Loaded texture: /usr/share/minetest/games/minetest_game/menu/header.png
2020-05-03 17:11:20: ERROR[Main]: ModError: Failed to load and run script from /home/adelcastillo/.minetest/mods/raspberryjammod/init.lua:
2020-05-03 17:11:20: ERROR[Main]: ...e/adelcastillo/.minetest/mods/raspberryjammod/socket.lua:21: module 'socket.cx64' not found:
2020-05-03 17:11:20: ERROR[Main]: 	no field package.preload['socket.cx64']
2020-05-03 17:11:20: ERROR[Main]: 	no file './socket/cx64.lua'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/share/luajit-2.1.0-beta3/socket/cx64.lua'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/local/share/lua/5.1/socket/cx64.lua'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/local/share/lua/5.1/socket/cx64/init.lua'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/share/lua/5.1/socket/cx64.lua'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/share/lua/5.1/socket/cx64/init.lua'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/home/adelcastillo/.minetest/mods/raspberryjammod/socket/cx64.lua'
2020-05-03 17:11:20: ERROR[Main]: 	no file './socket/cx64.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/local/lib/lua/5.1/socket/cx64.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/lib64/lua/5.1/socket/cx64.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/local/lib/lua/5.1/loadall.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/home/adelcastillo/.minetest/mods/raspberryjammod/socket/cx64.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file './socket.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/local/lib/lua/5.1/socket.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/lib64/lua/5.1/socket.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/usr/local/lib/lua/5.1/loadall.so'
2020-05-03 17:11:20: ERROR[Main]: 	no file '/home/adelcastillo/.minetest/mods/raspberryjammod/socket.so'
2020-05-03 17:11:20: ERROR[Main]: stack traceback:
2020-05-03 17:11:20: ERROR[Main]: 	[C]: in function 'require'
2020-05-03 17:11:20: ERROR[Main]: 	...e/adelcastillo/.minetest/mods/raspberryjammod/socket.lua:21: in main chunk
2020-05-03 17:11:20: ERROR[Main]: 	[C]: in function 'require'
2020-05-03 17:11:20: ERROR[Main]: 	/home/adelcastillo/.minetest/mods/raspberryjammod/init.lua:34: in main chunk
2020-05-03 17:11:20: ERROR[Main]: Check debug.txt for details.

so it first try to load socket/core.so module and after it socket/cx64.so. And the poblem is:

[raspberryjammod]$ ls -l /usr/lib64/lua/5.3/socket/core.so 
-rwxr-xr-x. 1 root root 64720 Jan 29 14:08 /usr/lib64/lua/5.3/socket/core.so

so we need to configure 5.3 version and no 5.1.

lua-socket-compat.x86_64 : Network support for the Lua language 5.1

and now it has worked!

[acs]

Last step is to check that all is working.

[raspberryjammod]$ telnet localhost 4711
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.

Cool! Let's try to draw things!

[acs]

Wonderful. It it working for sending messages:

[acs]

So now, it is time to test the full API to check it is compatible!

[acs]

The two block test has worked! I just need to change:

BUILDER_NAME = "singleplayer" # for minetest

[acs]

All the tests have worked!

[acs]

I am so happy ... a true free software platform in which to develop with Python! So cool!

Now we can decide if go with the pretty and polished Minecraft, used by millions of persons, or with Minetest, totally Open Source, not so pretty but ... free software

[acs]

I have tried to build the Abadia and it works. The experience flying around it is worse than with Minecraft. But maybe I need to adjust things. Let's see,

[acs]

Ok, I will play a bit more with everything, I will record a video and then, we can close this issue.

[acs]

Video recorded and uploaded:

https://www.youtube.com/watch?v=5qwQ1lD_E24&t=3s

Closing this issue!

[acs]

https://forum.minetest.net/viewtopic.php?t=13316