Stairs: unbind table groups (#2036)

Unbind table groups for base block, stairs, slabs.

diff --git a/mods/stairs/init.lua b/mods/stairs/init.lua
index e85c7081a9e7e89842f08fc68208e9bb3cbe35d2..4b31540de6cbda9da7f54f929eae51d2e3ee1eb1 100644 (file)
--- a/mods/stairs/init.lua
+++ b/mods/stairs/init.lua
@@ -68,7 +68,8 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
                        end
                end
        end
-       groups.stair = 1
+       local new_groups = table.copy(groups)
+       new_groups.stair = 1
        minetest.register_node(":stairs:stair_" .. subname, {
                description = description,
                drawtype = "nodebox",
@@ -76,7 +77,7 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
                paramtype = "light",
                paramtype2 = "facedir",
                is_ground_content = false,
-               groups = groups,
+               groups = new_groups,
                sounds = sounds,
                node_box = {
                        type = "fixed",
@@ -162,7 +163,8 @@ function stairs.register_slab(subname, recipeitem, groups, images, description,
                        end
                end
        end
-       groups.slab = 1
+       local new_groups = table.copy(groups)
+       new_groups.slab = 1
        minetest.register_node(":stairs:slab_" .. subname, {
                description = description,
                drawtype = "nodebox",
@@ -170,7 +172,7 @@ function stairs.register_slab(subname, recipeitem, groups, images, description,
                paramtype = "light",
                paramtype2 = "facedir",
                is_ground_content = false,
-               groups = groups,
+               groups = new_groups,
                sounds = sounds,
                node_box = {
                        type = "fixed",
@@ -318,7 +320,8 @@ function stairs.register_stair_inner(subname, recipeitem, groups, images, descri
                        end
                end
        end
-       groups.stair = 1
+       local new_groups = table.copy(groups)
+       new_groups.stair = 1
        minetest.register_node(":stairs:stair_inner_" .. subname, {
                description = "Inner " .. description,
                drawtype = "nodebox",
@@ -326,7 +329,7 @@ function stairs.register_stair_inner(subname, recipeitem, groups, images, descri
                paramtype = "light",
                paramtype2 = "facedir",
                is_ground_content = false,
-               groups = groups,
+               groups = new_groups,
                sounds = sounds,
                node_box = {
                        type = "fixed",
@@ -395,7 +398,8 @@ function stairs.register_stair_outer(subname, recipeitem, groups, images, descri
                        end
                end
        end
-       groups.stair = 1
+       local new_groups = table.copy(groups)
+       new_groups.stair = 1
        minetest.register_node(":stairs:stair_outer_" .. subname, {
                description = "Outer " .. description,
                drawtype = "nodebox",
@@ -403,7 +407,7 @@ function stairs.register_stair_outer(subname, recipeitem, groups, images, descri
                paramtype = "light",
                paramtype2 = "facedir",
                is_ground_content = false,
-               groups = groups,
+               groups = new_groups,
                sounds = sounds,
                node_box = {
                        type = "fixed",