Fix slab -> full block transformation

diff --git a/mods/stairs/init.lua b/mods/stairs/init.lua
index 1b00ef3663d227fe1acf5a5d1123dc187b4e426b..95d694d0ff53de2827b44201a75bb10c00bef36f 100644 (file)
--- a/mods/stairs/init.lua
+++ b/mods/stairs/init.lua
@@ -71,13 +71,10 @@ function stairs.register_slab(subname, recipeitem, groups, images, description)
                        local p0 = pointed_thing.under
                        local p1 = pointed_thing.above
                        local n0 = minetest.env:get_node(p0)
-                       local n1 = minetest.env:get_node(p1)
-                       if n0.name == "stairs:slab_" .. subname then
+                       if n0.name == "stairs:slab_" .. subname and
+                                       p0.y+1 == p1.y then
                                slabpos = p0
                                slabnode = n0
-                       elseif n1.name == "stairs:slab_" .. subname then
-                               slabpos = p1
-                               slabnode = n1
                        end
                        if slabpos then
                                -- Remove the slab at slabpos