Add wooden platforms for rails

init.lua

@@ -74,6 +74,16 @@ local function CanBuild(pos)
 	return minetest.registered_nodes[minetest.get_node(pos).name].is_ground_content
 end
 
+-- Checks if the node is empty space which requires to be filled by a platform
+local function NeedsPlatform(pos)
+	local node = minetest.get_node(pos)
+	local node2 = minetest.get_node({x=pos.x,y=pos.y-1,z=pos.z})
+	local nodedef = minetest.registered_nodes[node.name]
+	local node2def = minetest.registered_nodes[node2.name]
+	return nodedef.is_ground_content and nodedef.walkable == false
+		and node2def.is_ground_content and node2def.walkable == false
+end
+
 -- Würfel…
 -- Cube…
 local function Cube(p, radius, node)
@@ -88,6 +98,16 @@ local function Cube(p, radius, node)
 	end
 end
 
+local function Platform(p, radius, node)
+	for zi = p.z-radius, p.z+radius do
+		for xi = p.x-radius, p.x+radius do
+			if NeedsPlatform({x=xi,y=p.y-(radius+1),z=zi}) then
+				minetest.set_node({x=xi,y=p.y-(radius+1),z=zi}, node)
+			end
+		end
+	end
+end
+
 -- Random chest items
 -- Zufälliger Kisteninhalt
 local function rci()
@@ -179,6 +199,10 @@ local function corridor_part(start_point, segment_vector, segment_count)
 	end
 	for segmentindex = 0, segment_count-1 do
 		Cube(p, 1, {name="air"})
+		-- Add wooden platform, if neccessary. To avoid floating rails
+		if segment_vector.y == 0 then
+			Platform(p, 1, node_wood)
+		end
 		-- Diese komischen Holz-Konstruktionen
 		-- These strange wood structs
 		if segmentindex % 2 == 1 and segment_vector.y == 0 then			
@@ -214,7 +238,6 @@ local function corridor_part(start_point, segment_vector, segment_count)
 				minetest.set_node({x=calc[5], y=p.y+1, z=calc[6]}, {name=walltorchtype, param2=torchdir[1]})
 				minetest.set_node({x=calc[7], y=p.y+1, z=calc[8]}, {name=walltorchtype, param2=torchdir[2]})
 			end
-			
 		end
 		
 		-- nächster Punkt durch Vektoraddition