From 10307f23a78b33af50dc4a5f3d1baafb4ee4b0d9 Mon Sep 17 00:00:00 2001
From: Maciej 'agaran' Pijanka <agaran@pld-linux.org>
Date: Thu, 16 Mar 2017 00:00:22 +0100
Subject: [PATCH] Do not run converters twice.

---
 technic/machines/switching_station.lua |  124 ++++++++++++++++++++++++----------------
 1 files changed, 74 insertions(+), 50 deletions(-)

diff --git a/technic/machines/switching_station.lua b/technic/machines/switching_station.lua
index 33dff2b..8ace874 100644
--- a/technic/machines/switching_station.lua
+++ b/technic/machines/switching_station.lua
@@ -32,15 +32,16 @@
 --  This way the supplies are separated per network.
 
 technic.networks = {}
+technic.cables = {}
 
 local S = technic.getter
 
 minetest.register_craft({
 	output = "technic:switching_station",
 	recipe = {
-		{"",                        "technic:lv_transformer", ""},
-		{"default:copper_ingot",    "technic:machine_casing", "default:copper_ingot"},
-		{"technic:lv_cable0",       "technic:lv_cable0",      "technic:lv_cable0"}
+		{"",                     "technic:lv_transformer", ""},
+		{"default:copper_ingot", "technic:machine_casing", "default:copper_ingot"},
+		{"technic:lv_cable",     "technic:lv_cable",       "technic:lv_cable"}
 	}
 })
 
@@ -49,18 +50,18 @@
 	tiles  = {"technic_water_mill_top_active.png", "technic_water_mill_top_active.png",
                   "technic_water_mill_top_active.png", "technic_water_mill_top_active.png",
 	          "technic_water_mill_top_active.png", "technic_water_mill_top_active.png"},
-	groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2},
+	groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2, technic_all_tiers=1},
+	connect_sides = {"bottom"},
 	sounds = default.node_sound_wood_defaults(),
-	drawtype = "nodebox",
-	paramtype = "light",
-	node_box = {
-		type = "fixed",
-		fixed = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
-	},
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
 		meta:set_string("infotext", S("Switching Station"))
 		meta:set_string("active", 1)
+	end,
+	after_dig_node = function(pos)
+		minetest.forceload_free_block(pos)
+		pos.y = pos.y - 1
+		minetest.forceload_free_block(pos)
 	end,
 })
 
@@ -69,7 +70,8 @@
 --------------------------------------------------
 
 -- Add a wire node to the LV/MV/HV network
-local add_new_cable_node = function(nodes, pos)
+local add_new_cable_node = function(nodes, pos, network_id)
+	technic.cables[minetest.hash_node_position(pos)] = network_id
 	-- Ignore if the node has already been added
 	for i = 1, #nodes do
 		if pos.x == nodes[i].x and
@@ -82,37 +84,32 @@
 	return true
 end
 
-local load_position = function(pos)
-	if minetest.get_node_or_nil(pos) then return end
-	local vm = VoxelManip()
-	local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
-end
-
 -- Generic function to add found connected nodes to the right classification array
-local check_node_subp = function(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, pos, machines, tier, sw_pos)
-	load_position(pos)
+local check_node_subp = function(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, pos, machines, tier, sw_pos, from_below, network_id)
+	technic.get_or_load_node(pos)
 	local meta = minetest.get_meta(pos)
 	local name = minetest.get_node(pos).name
 
 	if technic.is_tier_cable(name, tier) then
-		add_new_cable_node(all_nodes, pos)
+		add_new_cable_node(all_nodes, pos,network_id)
 	elseif machines[name] then
 		--dprint(name.." is a "..machines[name])
+		meta:set_string(tier.."_network",minetest.pos_to_string(sw_pos))
 		if     machines[name] == technic.producer then
-			add_new_cable_node(PR_nodes, pos)
+			add_new_cable_node(PR_nodes, pos, network_id)
 		elseif machines[name] == technic.receiver then
-			add_new_cable_node(RE_nodes, pos)
+			add_new_cable_node(RE_nodes, pos, network_id)
 		elseif machines[name] == technic.producer_receiver then
-			add_new_cable_node(PR_nodes, pos)
-			add_new_cable_node(RE_nodes, pos)
+			add_new_cable_node(PR_nodes, pos, network_id)
+			add_new_cable_node(RE_nodes, pos, network_id)
 		elseif machines[name] == "SPECIAL" and
-				(pos.x ~= sw_pos.x or pos.y ~= sw_pos.y or pos.z ~= sw_pos.z) then
+				(pos.x ~= sw_pos.x or pos.y ~= sw_pos.y or pos.z ~= sw_pos.z) and
+				from_below then
 			-- Another switching station -> disable it
-			add_new_cable_node(SP_nodes, pos)
+			add_new_cable_node(SP_nodes, pos, network_id)
 			meta:set_int("active", 0)
-			meta:set_string("active_pos", minetest.serialize(sw_pos))
 		elseif machines[name] == technic.battery then
-			add_new_cable_node(BA_nodes, pos)
+			add_new_cable_node(BA_nodes, pos, network_id)
 		end
 
 		meta:set_int(tier.."_EU_timeout", 2) -- Touch node
@@ -120,7 +117,7 @@
 end
 
 -- Traverse a network given a list of machines and a cable type name
-local traverse_network = function(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, i, machines, tier, sw_pos)
+local traverse_network = function(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, i, machines, tier, sw_pos, network_id)
 	local pos = all_nodes[i]
 	local positions = {
 		{x=pos.x+1, y=pos.y,   z=pos.z},
@@ -131,7 +128,7 @@
 		{x=pos.x,   y=pos.y,   z=pos.z-1}}
 	--print("ON")
 	for i, cur_pos in pairs(positions) do
-		check_node_subp(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, cur_pos, machines, tier, sw_pos)
+		check_node_subp(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes, cur_pos, machines, tier, sw_pos, i == 3, network_id)
 	end
 end
 
@@ -163,11 +160,11 @@
 	local all_nodes = {pos1}
 	repeat
 		traverse_network(PR_nodes, RE_nodes, BA_nodes, SP_nodes, all_nodes,
-				i, technic.machines[tier], tier, sw_pos)
+				i, technic.machines[tier], tier, sw_pos, minetest.hash_node_position(pos1))
 		i = i + 1
 	until all_nodes[i] == nil
 	technic.networks[minetest.hash_node_position(pos1)] = {tier = tier, PR_nodes = PR_nodes,
-			RE_nodes = RE_nodes, BA_nodes = BA_nodes, SP_nodes = SP_nodes}
+			RE_nodes = RE_nodes, BA_nodes = BA_nodes, SP_nodes = SP_nodes, all_nodes = all_nodes}
 	return PR_nodes, BA_nodes, RE_nodes
 end
 
@@ -176,6 +173,7 @@
 -----------------------------------------------
 minetest.register_abm({
 	nodenames = {"technic:switching_station"},
+	label = "Switching Station", -- allows the mtt profiler to profile this abm individually
 	interval   = 1,
 	chance     = 1,
 	action = function(pos, node, active_object_count, active_object_count_wider)
@@ -192,48 +190,51 @@
 		local BA_nodes
 		local RE_nodes
 		local machine_name = S("Switching Station")
-
-		if meta:get_int("active") ~= 1 then
-			meta:set_int("active", 1)
-			local active_pos = minetest.deserialize(meta:get_string("active_pos"))
-			if active_pos then
-				local meta1 = minetest.get_meta(active_pos)
-				meta:set_string("infotext", S("%s (Slave)"):format(meta1:get_string("infotext")))
-			end
-			return
-		end
 		
 		-- Which kind of network are we on:
 		pos1 = {x=pos.x, y=pos.y-1, z=pos.z}
 
+		--Disable if necessary
+		if meta:get_int("active") ~= 1 then
+			minetest.forceload_free_block(pos)
+			minetest.forceload_free_block(pos1)
+			meta:set_string("infotext",S("%s Already Present"):format(machine_name))
+			return
+		end
+
 		local name = minetest.get_node(pos1).name
 		local tier = technic.get_cable_tier(name)
 		if tier then
+			-- Forceload switching station
+			minetest.forceload_block(pos)
+			minetest.forceload_block(pos1)
 			PR_nodes, BA_nodes, RE_nodes = get_network(pos, pos1, tier)
 		else
 			--dprint("Not connected to a network")
 			meta:set_string("infotext", S("%s Has No Network"):format(machine_name))
+			minetest.forceload_free_block(pos)
+			minetest.forceload_free_block(pos1)
 			return
 		end
 		
 		-- Run all the nodes
-		local function run_nodes(list)
+		local function run_nodes(list, run_stage)
 			for _, pos2 in ipairs(list) do
-				load_position(pos2)
+				technic.get_or_load_node(pos2)
 				local node2 = minetest.get_node(pos2)
 				local nodedef
 				if node2 and node2.name then
 					nodedef = minetest.registered_nodes[node2.name]
 				end
 				if nodedef and nodedef.technic_run then
-					nodedef.technic_run(pos2, node2)
+					nodedef.technic_run(pos2, node2, run_stage)
 				end
 			end
 		end
 		
-		run_nodes(PR_nodes)
-		run_nodes(RE_nodes)
-		run_nodes(BA_nodes)
+		run_nodes(PR_nodes, technic.producer)
+		run_nodes(RE_nodes, technic.receiver)
+		run_nodes(BA_nodes, technic.battery)
 
 		-- Strings for the meta data
 		local eu_demand_str    = tier.."_EU_demand"
@@ -297,8 +298,12 @@
 		--dprint("Total BA demand:"..BA_eu_demand)
 
 		meta:set_string("infotext",
-				S("%s. Supply: %d Demand: %d"):format(
-				machine_name, PR_eu_supply, RE_eu_demand))
+				S("@1. Supply: @2 Demand: @3",
+				machine_name, technic.pretty_num(PR_eu_supply), technic.pretty_num(RE_eu_demand)))
+
+		-- Data that will be used by the power monitor
+		meta:set_int("supply",PR_eu_supply)
+		meta:set_int("demand",RE_eu_demand)
 
 		-- If the PR supply is enough for the RE demand supply them all
 		if PR_eu_supply >= RE_eu_demand then
@@ -361,6 +366,7 @@
 			meta1 = minetest.get_meta(pos1)
 			meta1:set_int(eu_input_str, 0)
 		end
+		
 	end,
 })
 
@@ -383,6 +389,7 @@
 	interval   = 1,
 	chance     = 1,
 	action = function(pos, node, active_object_count, active_object_count_wider)
+		local meta = minetest.get_meta(pos)
 		for tier, machines in pairs(technic.machines) do
 			if machines[node.name] and switching_station_timeout_count(pos, tier) then
 				local nodedef = minetest.registered_nodes[node.name]
@@ -401,6 +408,23 @@
 	end,
 })
 
+--Re-enable disabled switching station if necessary, similar to the timeout above
+minetest.register_abm({
+	nodenames = {"technic:switching_station"},
+	interval   = 1,
+	chance     = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		local meta = minetest.get_meta(pos)
+		local pos1 = {x=pos.x,y=pos.y-1,z=pos.z}
+		local tier = technic.get_cable_tier(minetest.get_node(pos1).name)
+		if not tier then return end
+		if switching_station_timeout_count(pos, tier) then
+			local meta = minetest.get_meta(pos)
+			meta:set_int("active",1)
+		end
+	end,
+})
+
 for tier, machines in pairs(technic.machines) do
 	-- SPECIAL will not be traversed
 	technic.register_machine(tier, "technic:switching_station", "SPECIAL")

--
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