From 3c411555504b91324da9587f3b1a4ffeef0687dd Mon Sep 17 00:00:00 2001
From: Aaron Suen <warr1024@gmail.com>
Date: Fri, 6 Aug 2021 21:46:27 -0400
Subject: [PATCH] Hint discovery by looktips

No touching necessary anymore
---
 mods/nc_api_ents/falling_ent.lua |  4 +++-
 mods/nc_api_ents/item_ent.lua    |  4 +++-
 mods/nc_api_hints/discover.lua   | 23 +++++++++++++++++++++--
 3 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/mods/nc_api_ents/falling_ent.lua b/mods/nc_api_ents/falling_ent.lua
index 8c9da54e..711ab577 100644
--- a/mods/nc_api_ents/falling_ent.lua
+++ b/mods/nc_api_ents/falling_ent.lua
@@ -55,13 +55,15 @@ minetest.register_entity(":__builtin:falling_node", {
 
 		on_activate = function(self, data)
 			self.object:set_armor_groups({immortal = 1})
-			return data_load(self, data)
+			data_load(self, data)
+			self.represents_item = self.node and self.node.name
 		end,
 
 		set_node = function(self, node, meta)
 			if not node then return self.object:remove() end
 
 			self.node = node
+			self.represents_item = self.node and self.node.name
 			local def = minetest.registered_items[node.name]
 			if def.falling_replacement then
 				self.node.name = def.falling_replacement
diff --git a/mods/nc_api_ents/item_ent.lua b/mods/nc_api_ents/item_ent.lua
index 03b029a5..14e67909 100644
--- a/mods/nc_api_ents/item_ent.lua
+++ b/mods/nc_api_ents/item_ent.lua
@@ -31,7 +31,9 @@ minetest.register_entity(":__builtin:item", {
 		},
 
 		set_item = function(self, item)
-			item = item and ItemStack(item):to_string()
+			local stack = ItemStack(item)
+			item = item and stack:to_string()
+			self.represents_item = stack:get_name()
 			if item and item ~= self.itemstring then
 				self.itemstring = item
 				self.object:set_yaw(math_random() * math_pi * 2)
diff --git a/mods/nc_api_hints/discover.lua b/mods/nc_api_hints/discover.lua
index c7924d1b..87d0cb78 100644
--- a/mods/nc_api_hints/discover.lua
+++ b/mods/nc_api_hints/discover.lua
@@ -114,11 +114,12 @@ nodecore.register_on_chat_message("chat message stats", function(name, msg)
 	end)
 
 ------------------------------------------------------------------------
--- PLAYER INVENTORY SCAN
+-- PLAYER SCAN
 
 nodecore.register_playerstep({
 		label = "inv",
-		action = function(player)
+		action = function(player, data)
+			-- inventory
 			local inv = player:get_inventory()
 			local t = {}
 			for i = 1, inv:get_size("main") do
@@ -130,5 +131,23 @@ nodecore.register_playerstep({
 			for k in pairs(t) do
 				discover(player, "inv:" .. k)
 			end
+
+			-- looking at
+			local pt = data.raycast()
+			if pt then
+				if pt.type == "node" then
+					local nn = minetest.get_node(pt.under).name
+					discover(player, "look:" .. nn)
+					local stack = nodecore.stack_get(pt.under)
+					if stack and not stack:is_empty() then
+						discover(player, "look:" .. stack:get_name())
+					end
+				elseif pt.type == "object" then
+					local luaent = pt.ref:get_luaentity()
+					if luaent and luaent.represents_item then
+						discover(player, "look:" .. luaent.represents_item)
+					end
+				end
+			end
 		end
 	})