Make panels lockable

init.lua

@@ -2,9 +2,11 @@ digistuff = {}
 
 digistuff.update_panel_formspec = function (pos,dispstr)
 	local meta = minetest.get_meta(pos)
+	local locked = meta:get_int("locked") == 1
 	local fs = "size[10,8]"..
 		"background[0,0;0,0;digistuff_panel_bg.png;true]"..
 		"label[0,0;%s]"..
+		(locked and "image_button[9,3;1,1;digistuff_panel_locked.png;unlock;]" or "image_button[9,3;1,1;digistuff_panel_unlocked.png;lock;]")..
 		"image_button[2,4.5;1,1;digistuff_adwaita_go-up.png;up;]"..
 		"image_button[1,5;1,1;digistuff_adwaita_go-previous.png;left;]"..
 		"image_button[3,5;1,1;digistuff_adwaita_go-next.png;right;]"..
@@ -15,6 +17,7 @@ digistuff.update_panel_formspec = function (pos,dispstr)
 		"button[8,5.5;1,1;savechan;Set]"
 	fs = fs:format(minetest.formspec_escape(dispstr)):gsub("|","\n")
 	meta:set_string("formspec",fs)
+	meta:set_string("text",dispstr)
 end
 
 digistuff.panel_on_digiline_receive = function (pos, node, channel, msg)
@@ -28,22 +31,79 @@ end
 digistuff.panel_on_receive_fields = function(pos, formname, fields, sender)
 	local meta = minetest.get_meta(pos)
 	local setchan = meta:get_string("channel")
+	local playername = sender:get_player_name()
+	local locked = meta:get_int("locked") == 1
+	local can_bypass = minetest.check_player_privs(playername,{protection_bypass=true})
+	local is_protected = minetest.is_protected(pos,playername)
 	if fields.savechan then
+		if can_bypass or not is_protected then
 			meta:set_string("channel",fields.channel)
 			local helpmsg = "Channel has been set. Waiting for data..."
 			digistuff.update_panel_formspec(pos,helpmsg)
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to change the channel of this panel.")
+		end
 	elseif fields.up then
+		if can_bypass or not is_protected or not locked then
 			digiline:receptor_send(pos, digiline.rules.default, setchan, "up")
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to use this panel.")
+		end
 	elseif fields.down then
+		if can_bypass or not is_protected or not locked then
 			digiline:receptor_send(pos, digiline.rules.default, setchan, "down")
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to use this panel.")
+		end
 	elseif fields.left then
+		if can_bypass or not is_protected or not locked then
 			digiline:receptor_send(pos, digiline.rules.default, setchan, "left")
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to use this panel.")
+		end
 	elseif fields.right then
+		if can_bypass or not is_protected or not locked then
 			digiline:receptor_send(pos, digiline.rules.default, setchan, "right")
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to use this panel.")
+		end
 	elseif fields.back then
+		if can_bypass or not is_protected or not locked then
 			digiline:receptor_send(pos, digiline.rules.default, setchan, "back")
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to use this panel.")
+		end
 	elseif fields.enter then
+		if can_bypass or not is_protected or not locked then
 			digiline:receptor_send(pos, digiline.rules.default, setchan, "enter")
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to use this panel.")
+		end
+	elseif fields.lock then
+		if can_bypass or not is_protected then
+			meta:set_int("locked",1)
+			minetest.chat_send_player(playername,"This panel has been locked. Access will now be controlled according to area protection.")
+			digistuff.update_panel_formspec(pos,meta:get_string("text"))
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to lock this panel.")
+		end
+	elseif fields.unlock then
+		if can_bypass or not is_protected then
+			meta:set_int("locked",0)
+			minetest.chat_send_player(playername,"This panel has been unlocked. It can now be used (but not locked or have the channel changed) by anyone.")
+			digistuff.update_panel_formspec(pos,meta:get_string("text"))
+		else
+			minetest.record_protection_violation(pos,playername)
+			minetest.chat_send_player(playername,"You are not authorized to unlock this panel.")
+		end
 	end
 end
 
@@ -286,6 +346,7 @@ minetest.register_node("digistuff:panel", {
 	on_construct = function(pos)
 		local helpmsg = "Please set a channel."
 		digistuff.update_panel_formspec(pos,helpmsg)
+		minetest.get_meta(pos):set_int("locked",0)
 	end,
 	drawtype = "nodebox",
 	tiles = {