Fixes: #3913#3915
~~You can reproduce the crash by placing a fish bucket on top snow above an unknown node.
I also noticed that the code always uses pointed_thing.above so I fixed that and also added a function to mcl_utils to figure out where a node should be placed (either above or below). Looks like the rest of the code could also use improvement but at least it does not crash now.~~
Cora fixed a bunch of related crashes in Mineclona so I am replacing my commit and cherry picking all her commits here.
https://codeberg.org/mineclonia/mineclonia/pulls/549
Here is the list of fixes from that PR:
- Crash when placing snow layer on unknown nodes
- Crash when snow layers on unknown nodes are flooded
- Crash when placing fishbucket on snow on top of unknown nodes
- Crash when placing chorus flower and stem on unknown
- Crash when placing mob spawners on unknown
- The fishbucket on place to actually replace buildable_to
Co-authored-by: cora <coradelamouche@gmx.ch>
Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/3914
Reviewed-by: ancientmarinerdev <ancientmariner_dev@proton.me>
Co-authored-by: 𝕵𝖔𝖍𝖆𝖓𝖓𝖊𝖘 𝕱𝖗𝖎𝖙𝖟 <mrrar@noreply.git.minetest.land>
Co-committed-by: 𝕵𝖔𝖍𝖆𝖓𝖓𝖊𝖘 𝕱𝖗𝖎𝖙𝖟 <mrrar@noreply.git.minetest.land>
This fixes:
```
2021-07-10 10:00:58: WARNING[Main]: get_mapgen_params is deprecated; use get_mapgen_setting instead (at .../../games/MineClone2/mods/ITEMS/mcl_end/chorus_plant.lua:456)
```
