Rename: playerplus→mcl_playerplus, drop compat.

mods/PLAYER/mcl_playerplus/README.md

@@ -0,0 +1,31 @@
+# PlayerPlus mod for MineClone 2
+
+## Features
+
+- Hurt players touching cacti (0.5 hearts / 0.5s)
+- Suffocation: Hurt players who have their head inside a solid block (0.5 hearts / 0.5s)
+- Exhaustion for swimming and jumping
+- Particle effects
+
+Suffocation *not* dealt to player with the `noclip` privilege.
+
+## Notes
+This mod is based on PlayerPlus [`playerplus`] by TenPlus1. It is now
+very different than the original, no compability is intended.
+
+## API
+
+Every half second the mod checks which node the player is standing on, which
+node is at foot and head level and stores inside a global table to be used by mods:
+
+- `mcl_playerplus[name].node_stand`
+- `mcl_playerplus[name].node_stand_below`
+- `mcl_playerplus[name].node_foot`
+- `mcl_playerplus[name].node_head`
+
+Setting the group `disable_suffocation=1` disables suffocation for nodes which
+would otherwise deal suffocation damage.
+
+## License
+WTFPL.
+