Check the node below on globalstep, and if it's air just unmount (fixes #1)

cora, thanks again ^^

init.lua

@@ -45,6 +45,12 @@ minetest.register_globalstep(function(dtime)
 				mcl_player.player_attached[name] = false
 				mcl_player.player_set_animation(players[i], "stand", 30)
 		end
+		-- check the node below player (and if it's air, just unmount)
+		if minetest.get_node(vector.offset(players[i]:get_pos(),0,-1,0)).name == "air" then
+			players[i]:set_eye_offset({x=0, y=0, z=0}, {x=0, y=0, z=0})
+			players[i]:set_physics_override(1, 1, 1)
+			mcl_player.player_attached[name] = false
+		end
 	end
 end)