Sync tenplus1 'master'/https://notabug.org/TenPlus1/nssb for newer fu…

…nctions and ores

* optimized ore generation by removing iterations and using stratum feature
  as note this feature are only from 5.0 as documented and check in
  luanti-org/luanti@9f6d90a
  this was a good move by tenplus cos works as a unique plain layer cos
  creates single undulating ore stratum that is continuous across mapchunk
  borders and horizontally spans the world, as a layer..
  the ore type its used only on the generation of the space of the 7 layers
  that defines the morlendor space, before and after there are indestructible ones
* this is a merge of two optimizations commits:
  the commit 26c8022
  and commit f728f41
  later i added a next commit with a compatibility hack for 0.4 engines
* merge the initial "optimization" that only removed more of the
  generation of ore nodes in the morlendor space  that is
  a merge of commit f728f41
  with cosmetics changes that just difficult the comparison of code forks
* adde configuration of the level of the morlendor layer,
  make it compatible with other mods like cavereamls and nether
  TODO: added a detection of those levels to auto configure morlendor
* use newer funcions of commit ee84ab5
  change `minetest.env:get_node` by `minetest.get_node` so 0.4.15 its minimal
  change `tile_images` of `minetest.register_node` by `tile`
  change `alpha = 650` of `minetest.register_node` by `use_texture_alpha = "blend",`
  change `obj:setpos` by `obj:set_pos` of previous commit
* add changelog updated and cosmetic changes by tenplus1

changelog.txt

@@ -1,7 +1,13 @@
+v2.1 - 3rd Feb 2022 (Edited by TenPlus1)
+ - Switch to new functions
+ - Add configurable level in settings (nssb.morlendor_level)
+ - Replace registered_ore iterations with "stratum" feature for speed increase
+ - Fix any errors
+
 v2.0 - 22-11-16
  - added the Morlendor dimension and all its materials;
  - added the compatibility with the mapgen v7 and valleys (and also fractal and flat);
  - added the portals to go to Morlendor and come back.
- 
+
 v1.0 - 22-03-16
 First stable release

init.lua

@@ -1,6 +1,7 @@
---Nssb
-nssb = {}
-local path = minetest.get_modpath("nssb")
-dofile(path.."/nodes.lua")
-dofile(path.."/mapgen.lua")
-dofile(path.."/spawn.lua")
+nssb = {}
+
+local path = minetest.get_modpath("nssb")
+
+dofile(path .. "/nodes.lua")
+dofile(path .. "/mapgen.lua")
+dofile(path .. "/spawn.lua")

mod.conf

@@ -1 +1,2 @@
 name = nssb
+depends = default, nssm, tnt