From 5b38bb2737430ce8bb20603aef9930ef203014da Mon Sep 17 00:00:00 2001
From: Wuzzy <almikes@aol.com>
Date: Tue, 29 Aug 2017 23:34:02 +0200
Subject: [PATCH] Add back the redstone help

---
 .../ITEMS/REDSTONE/mesecons_wires/depends.txt |  1 +
 mods/ITEMS/REDSTONE/mesecons_wires/init.lua   | 20 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/mods/ITEMS/REDSTONE/mesecons_wires/depends.txt b/mods/ITEMS/REDSTONE/mesecons_wires/depends.txt
index acaa92412..4fdbda79f 100644
--- a/mods/ITEMS/REDSTONE/mesecons_wires/depends.txt
+++ b/mods/ITEMS/REDSTONE/mesecons_wires/depends.txt
@@ -1 +1,2 @@
 mesecons
+doc?
diff --git a/mods/ITEMS/REDSTONE/mesecons_wires/init.lua b/mods/ITEMS/REDSTONE/mesecons_wires/init.lua
index d90ccd1fc..05a5e7171 100644
--- a/mods/ITEMS/REDSTONE/mesecons_wires/init.lua
+++ b/mods/ITEMS/REDSTONE/mesecons_wires/init.lua
@@ -214,21 +214,33 @@ local function register_wires()
 		local tiles_off = { crossing_off, crossing_off, straight0_off, straight1_off, straight0_off, straight1_off }
 		local tiles_on = { crossing_on, crossing_on, straight0_on, straight1_on, straight0_on, straight1_on }
 
+		local wirehelp, longdesc, usagehelp
 		if nodeid == "00000000" then
 			-- Non-connected redstone wire
 			nodebox.fixed = {-8/16, -.5, -8/16, 8/16, -.5+1/64, 8/16}
 			-- “Dot” texture
 			tiles_off = { dot_off, dot_off, "blank.png", "blank.png", "blank.png", "blank.png" }
 			tiles_on = { dot_on, dot_on, "blank.png", "blank.png", "blank.png", "blank.png" }
+
+			longdesc = [[Redstone is a versatile conductive mineral which transmits redstone power. It can be placed on trail the ground as a trail.
+A redstone trail can be in two states: Powered or not powered. A powered redstone trail will power (and thus activate) adjacent redstone components.
+Redstone power can be received from various redstone components, such as a block of redstone or a button. Redstone power is used to activate numerous mechanisms, such as redstone lamps or pistons.]]
+			usagehelp = [[Place redstone on the ground to build a redstone trail. The trails will connect to each other automatically and it can also go over hills. An easy way to power a redstone trail is by placing a redstone torch.
+
+Read the help entries on the other redstone components to learn how redstone components interact.]]
 		else
 			-- Connected redstone wire
 			table.insert(nodebox, box_center)
 			tiles_off = { crossing_off, crossing_off, straight0_off, straight1_off, straight0_off, straight1_off, }
 			tiles_on = { crossing_on, crossing_on, straight0_on, straight1_on, straight0_on, straight1_on, }
+			wirehelp = false
 		end
 
 		mesecon.register_node(":mesecons:wire_"..nodeid, {
 			description = "Redstone",
+			_doc_items_create_entry = wirehelp,
+			_doc_items_longdesc = longdesc,
+			_doc_items_usagehelp = usagehelp,
 			drawtype = "nodebox",
 			inventory_image = "redstone_redstone_dust.png",
 			wield_image = "redstone_redstone_dust.png",
@@ -243,6 +255,14 @@ local function register_wires()
 		}, {tiles = tiles_off, mesecons = meseconspec_off, groups = groups_off},
 		{tiles = tiles_on, mesecons = meseconspec_on, groups = groups_on})
 
+		-- Add Help entry aliases for e.g. making it identifiable by the lookup tool [doc_identifier]
+		if minetest.get_modpath("doc") then
+			if nodeid ~= "00000000" then
+				doc.add_entry_alias("nodes", "mesecons:wire_00000000_off", "nodes", "mesecons:wire_"..nodeid.."_off")
+			end
+			doc.add_entry_alias("nodes", "mesecons:wire_00000000_off", "nodes", "mesecons:wire_"..nodeid.."_on")
+		end
+
 		if (nid_inc(nid) == false) then return end
 	end
 end