From b001a679799bdc7d08eabcd1300271d0e1357b0a Mon Sep 17 00:00:00 2001
From: Zefram <zefram@fysh.org>
Date: Wed, 13 Aug 2014 20:07:53 +0200
Subject: [PATCH] Administrative world anchor

---
 technic/machines/HV/forcefield.lua |   27 ++++++++++++++++-----------
 1 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/technic/machines/HV/forcefield.lua b/technic/machines/HV/forcefield.lua
index d5b5e54..0e530e0 100644
--- a/technic/machines/HV/forcefield.lua
+++ b/technic/machines/HV/forcefield.lua
@@ -63,19 +63,21 @@
 end
 
 local function set_forcefield_formspec(meta)
-	local formspec = "size[5.5,2.25]"..
-		"field[2.25,0.5;2,1;range;"..S("Range")..";"..meta:get_int("range").."]"
+	local formspec = "size[5,2.25]"..
+		"field[2,0.5;2,1;range;"..S("Range")..";"..meta:get_int("range").."]"
+	-- The names for these toggle buttons are explicit about which
+	-- state they'll switch to, so that multiple presses (arising
+	-- from the ambiguity between lag and a missed press) only make
+	-- the single change that the user expects.
 	if meta:get_int("mesecon_mode") == 0 then
-		formspec = formspec.."button[0,1;5.5,1;mesecon_mode_1;"..S("Ignoring Mesecon Signal").."]"
-	elseif meta:get_int("mesecon_mode") == 1 then
-		formspec = formspec.."button[0,1;5.5,1;mesecon_mode_2;"..S("Controlled by Positive Mesecon Signal").."]"
+		formspec = formspec.."button[0,1;5,1;mesecon_mode_1;"..S("Ignoring Mesecon Signal").."]"
 	else
-		formspec = formspec.."button[0,1;5.5,1;mesecon_mode_0;"..S("Controlled by Inverted Mesecon Signal").."]"
+		formspec = formspec.."button[0,1;5,1;mesecon_mode_0;"..S("Controlled by Mesecon Signal").."]"
 	end
 	if meta:get_int("enabled") == 0 then
-		formspec = formspec.."button[0.25,1.75;5,1;enable;"..S("%s Disabled"):format(S("%s Forcefield Emitter"):format("HV")).."]"
+		formspec = formspec.."button[0,1.75;5,1;enable;"..S("%s Disabled"):format(S("%s Forcefield Emitter"):format("HV")).."]"
 	else
-		formspec = formspec.."button[0.25,1.75;5,1;disable;"..S("%s Enabled"):format(S("%s Forcefield Emitter"):format("HV")).."]"
+		formspec = formspec.."button[0,1.75;5,1;disable;"..S("%s Enabled"):format(S("%s Forcefield Emitter"):format("HV")).."]"
 	end
 	meta:set_string("formspec", formspec)
 end
@@ -98,7 +100,6 @@
 	if fields.disable then meta:set_int("enabled", 0) end
 	if fields.mesecon_mode_0 then meta:set_int("mesecon_mode", 0) end
 	if fields.mesecon_mode_1 then meta:set_int("mesecon_mode", 1) end
-	if fields.mesecon_mode_2 then meta:set_int("mesecon_mode", 2) end
 	set_forcefield_formspec(meta)
 end
 
@@ -117,7 +118,7 @@
 	local meta = minetest.get_meta(pos)
 	local eu_input   = meta:get_int("HV_EU_input")
 	local eu_demand  = meta:get_int("HV_EU_demand")
-	local enabled = meta:get_int("enabled") ~= 0 and (meta:get_int("mesecon_mode") == 0 or (meta:get_int("mesecon_mode") == 1 and meta:get_int("mesecon_effect") ~= 0) or (meta:get_int("mesecon_mode") == 2 and meta:get_int("mesecon_effect") == 0))
+	local enabled = meta:get_int("enabled") ~= 0 and (meta:get_int("mesecon_mode") == 0 or meta:get_int("mesecon_effect") ~= 0)
 	local machine_name = S("%s Forcefield Emitter"):format("HV")
 
 	local power_requirement = math.floor(
@@ -180,7 +181,11 @@
 	end,
 	mesecons = mesecons,
 	technic_run = run,
-	technic_disabled_machine_name = "technic:forcefield_emitter",
+	technic_on_disable = function (pos, node)
+		local meta = minetest.get_meta(pos)
+		update_forcefield(pos, meta:get_int("range"), false)
+		technic.swap_node(pos, "technic:forcefield_emitter_off")
+	end,
 })
 
 minetest.register_node("technic:forcefield", {

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