Fix bug of teletool not working when y<0

init.lua

@@ -10,19 +10,23 @@ teletool.settings = {}
 
 function teletool.teleport(player, pointed_thing)
 	local pos = pointed_thing.above
-	local over1 = minetest.get_node({x=pos.x,y=pos.y+1,z=pos.z})
 	local src = player:getpos()
 	local dest = {x=pos.x, y=math.ceil(pos.y)-0.5, z=pos.z}
-	local destnode = minetest.get_node(dest)
+	local over = {x=dest.x, y=dest.y+1, z=dest.z}
+	local destnode = minetest.get_node({x=dest.x, y=math.ceil(dest.y), z=dest.z})
+	local overnode = minetest.get_node({x=over.x, y=math.ceil(over.y), z=over.z})
+
+	minetest.log("action", "[teletool] dest: "..minetest.pos_to_string(dest))
+	minetest.log("action", "[teletool] over: "..minetest.pos_to_string(over))
 
 	-- This trick prevents the player's head to spawn in a walkable node if the player clicked on the lower side of a node
 	-- NOTE: This piece of code must be updated as soon the collision boxes of players become configurable
-	if minetest.registered_nodes[over1.name].walkable then
+	if minetest.registered_nodes[overnode.name].walkable then
 		dest.y = dest.y - 1
 	end
 
 	-- The destination must be collision free
-	local destnode = minetest.get_node(dest)
+	destnode = minetest.get_node({x=dest.x, y=math.ceil(dest.y), z=dest.z})
 	if minetest.registered_nodes[destnode.name].walkable then
 		return false
 	end