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-rw-r--r--ropes/extendingladder.lua5
1 files changed, 5 insertions, 0 deletions
diff --git a/ropes/extendingladder.lua b/ropes/extendingladder.lua
index c804ac2..01d1563 100644
--- a/ropes/extendingladder.lua
+++ b/ropes/extendingladder.lua
@@ -53,6 +53,11 @@ minetest.register_craft({
local ladder_extender = function(pos, node, clicker, itemstack, pointed_thing, ladder_node, standing_limit)
+ -- on_rightclick can be called by other mods, make sure we have all the parameters we need
+ if pointed_thing == nil or itemstack == nil then
+ return itemstack
+ end
+
local clicked_stack = ItemStack(itemstack)
-- true if we're pointing up at the ladder from below and there's a buildable space below it