From 4dbfbec96e64d17be9c7834618b77611d72d2f7d Mon Sep 17 00:00:00 2001
From: fluxionary <25628292+fluxionary@users.noreply.github.com>
Date: Tue, 10 May 2022 16:47:15 -0700
Subject: [PATCH] remove sign entity if sign is gone (due to voxelmanip or
 such) (#9)

---
 api.lua | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/api.lua b/api.lua
index a4eb208..0a55cd3 100644
--- a/api.lua
+++ b/api.lua
@@ -167,7 +167,13 @@ minetest.register_entity("signs_lib:text", {
 	mesh = "signs_lib_standard_sign_entity_wall.obj",
 	textures = {},
 	static_save = true,
-	backface_culling = false
+	backface_culling = false,
+	on_activate = function(self)
+		local node = minetest.get_node(self.object:get_pos())
+		if minetest.get_item_group(node.name, "sign") == 0 then
+			self.object:remove()
+		end
+	end,
 })
 
 function signs_lib.delete_objects(pos)