Add ctf_pvp_engine mods directly in the repo

mods/ctf_pvp_engine/ctf_protect/depends.txt

@@ -0,0 +1 @@
+ctf

mods/ctf_pvp_engine/ctf_protect/init.lua

@@ -0,0 +1,28 @@
+-- This mod is used to protect nodes in the capture the flag game
+ctf.register_on_init(function()
+	ctf.log("chat", "Initialising...")
+
+	-- Settings: Chat
+	ctf._set("node_ownership",          true)
+end)
+
+local old_is_protected = minetest.is_protected
+
+function minetest.is_protected(pos, name)
+	if not ctf.setting("node_ownership") then
+		return old_is_protected(pos, name)
+	end
+
+	local team = ctf.get_territory_owner(pos)
+
+	if not team or not ctf.team(team) then
+		return old_is_protected(pos, name)
+	end
+
+	if ctf.player(name).team == team then
+		return old_is_protected(pos, name)
+	else
+		minetest.chat_send_player(name, "You cannot dig on team "..team.."'s land")
+		return true
+	end
+end