smwMap.lua (v1.2.1) - The Levels are using Levels!

[Doodoxing]

I've encountered an issue with this where the level npcs are overridden by custom npcs that share their ids

what it looks like:

Have had an exactly same bug. Changing an ID inside ini file of the level tiles resolves the issue. Of course I did change a file name of NPC as well (changed only for the SMWmap stuff to not make a conflicts with NPCs from the episode root folder).

[DispaceTroblex]

map.lvlx with smwmap.lua but Darkness, Player Lights, Effects (Including Weather, Screen Effects, etc) is not working

[mariobrigade2018]

map.lvlx with smwmap.lua but Darkness, Player Lights, Effects (Including Weather, Screen Effects, etc) is not working

[deice]

(gif)

since it is inside a level file, it is at the very least not unreasonable to assume that vanilla effects which are purely visual and don't depend on the player object (such as screen effects) might work just as they do in a normal level
it's not mentioned explicitly that they don't to my knowledge, and it's not at all strange to want to have extra visual effects on the overworld (such as rain or snow), so an inexperienced user could very easily assume them not working might be the result of an oversight