From 491818fc03d2cfc4ac0b555ec5e00b0e9477339f Mon Sep 17 00:00:00 2001
From: luk3yx <luk3yx@users.noreply.github.com>
Date: Sat, 16 Apr 2022 16:46:19 +1200
Subject: [PATCH] Don't allow protector blocks to replace other nodes

---
 protector.lua | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/protector.lua b/protector.lua
index f8705e8..b28f8a7 100644
--- a/protector.lua
+++ b/protector.lua
@@ -28,6 +28,13 @@ minetest.register_node("areas:protector", {
 		local name = player and player:get_player_name()
 
 		if not name or not minetest.is_protected(pos, name) then
+			-- Don't replace nodes that aren't buildable to
+			local old_node = minetest.get_node(pos)
+			local def = minetest.registered_nodes[old_node.name]
+			if not def or not def.buildable_to then
+				return itemstack
+			end
+
 			local pos1 = vadd(pos, vnew(radius, radius, radius))
 			local pos2 = vadd(pos, vnew(-radius, -radius, -radius))
 			local perm, err = areas:canPlayerAddArea(pos1, pos2, name)