Portal abstraction

.luacheckrc

@@ -1,15 +1,25 @@
 unused_args = false
 allow_defined_top = true
 
+globals = {
+	"nether"
+}
+
 read_globals = {
 	"core",
 	"default",
 	"DIR_DELIM",
 	"dump",
+	"dungeon_loot",
 	"intllib",
 	"ItemStack",
+	"loot",
+	"doc",
+	"math.hypot",
+	"mesecon",
 	"minetest",
 	"nodeupdate",
+	"PcgRandom",
 	"PseudoRandom",
 	"stairs",
 	"stairsplus",

README.md

@@ -1,4 +1,10 @@
-Nether Mod for Minetest
+Nether Mod for Minetest, with Portals API.
+
+See portal_api.txt for how to create custom portals to your own realms.
+
+See settingtypes.txt or go to "Settings"->"All Settings"->"Mods"->"nether"
+in the game to view the options provided by this mod.
+
 
 ## License of source code:
 
@@ -17,15 +23,25 @@ WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 SOFTWARE.
 
-## License of media (textures and sounds)
+## License and attribution of media (textures and sounds)
 
-Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
-http://creativecommons.org/licenses/by-sa/3.0/
+### [Public Domain Dedication (CC0 1.0)](https://creativecommons.org/publicdomain/zero/1.0/)
 
-## Authors of media files
+ * `nether_portal_teleport.ogg` is a timing adjusted version of "teleport" by outroelison (https://freesound.org/people/outroelison), used under CC0 1.0
 
-Everything not listed in here:
-Copyright (C) 2013 PilzAdam
+### [Attribution 3.0 Unported (CC BY 3.0)](https://creativecommons.org/licenses/by/3.0/)
+
+ * `nether_portal_ambient.ogg` & `nether_portal_ambient.0.ogg` are extractions from "Deep Cinematic Rumble Stereo" by [Patrick Lieberkind](http://www.lieberkindvisuals.dk), used under CC BY 3.0
+ * `nether_portal_extinguish.ogg` is an extraction from "Tight Laser Weapon Hit Scifi" by damjancd (https://freesound.org/people/damjancd), used under CC BY 3.0
+ * `nether_portal_ignite.ogg` is a derivative of "Flame Ignition" by hykenfreak (https://freesound.org/people/hykenfreak), used under CC BY 3.0. "Nether Portal ignite" is licensed under CC BY 3.0 by Treer.
+
+### [Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)](https://creativecommons.org/licenses/by-sa/4.0/)
+ * `nether_book_`* (files starting with "nether_book"): Treer, 2019-2020
+ * `nether_portal_ignition_failure.ogg`: Treer, 2019
+ * `nether_particle_anim`* (files starting with "nether_particle_anim"): Treer, 2019
+
+### [Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)](http://creativecommons.org/licenses/by-sa/3.0/)
+ * `nether_rack.png`: Zeg9
+ * `nether_glowstone.png`: BlockMen
 
- - nether_rack.png: Zeg9
- - nether_glowstone.png: BlockMen
+All other media: Copyright © 2013 PilzAdam, licensed under CC BY-SA 3.0 by PilzAdam.

depends.txt

@@ -1,3 +1,7 @@
 stairs
 default
 moreblocks?
+mesecons?
+loot?
+dungeon_loot?
+doc_basics?