\[BROKEN ATM!\]more stuff towards research system

ability.lua

@@ -0,0 +1,135 @@
+
+local abilities = {}
+local recipes = {}
+
+function magicalities.player_has_recipe(player, recipe_name)
+	if not magicalities.data[player] then return false end
+	return recipes[recipe_name] and (recipes[recipe_name].default == true or table.indexof(magicalities.data[player].recipes, recipe_name) ~= -1)
+end
+
+function magicalities.player_has_ability(player, ability_name)
+	if not magicalities.data[player] then return false end
+	return abilities[ability_name] and (abilities[ability_name].default == true or table.indexof(magicalities.data[player].abilities, ability_name) ~= -1)
+end
+
+function magicalities.player_research(player)
+	if not magicalities.data[player] then return 0 end
+	return magicalities.data[player].research
+end
+
+-- Check if a recipe/ability depends on another recipe/ability
+function magicalities.learn_meets_prerequisites(player_name, item, recipe)
+	local a = abilities
+	local c = magicalities.player_has_ability
+
+	if recipe then
+		a = recipes
+		c = magicalities.player_has_recipe
+	end
+
+	if not a[item] then return false end
+	if a[item].depends then
+		local can = true
+		for v in pairs(a[item].depends) do
+			if not c(player, v) then
+				can = false
+				break
+			end
+		end
+		if not can then return false end
+	end
+
+	return true
+end
+
+-- List all abilities and crafting recipes available to player, (optionally including ones that can immediately be researched)
+function magicalities.available_to_player(player_name, unlocked, researchable)
+	local all = {}
+
+	-- Abilities
+	for name,data in pairs(abilities) do
+		local tc = table.copy(data)
+		tc.type = 'ability'
+		if magicalities.player_has_ability(player_name, name) and unlocked then
+			tc.unlocked = true
+			table.insert(all, tc)
+		elseif magicalities.learn_meets_prerequisites(player_name, name) and researchable then
+			tc.unlocked = false
+			table.insert(all, tc)
+		end
+	end
+
+	-- Recipes
+	for name,data in pairs(recipes) do
+		local tc = table.copy(data)
+		tc.type = 'recipe'
+		if magicalities.player_has_recipe(player_name, name) and unlocked then
+			tc.unlocked = true
+			table.insert(all, tc)
+		elseif magicalities.learn_meets_prerequisites(player_name, name, true) and researchable then
+			tc.unlocked = false
+			table.insert(all, tc)
+		end
+	end
+
+	return all
+end
+
+-- Learn a recipe or an ability
+function magicalities.player_learn(player_name, item, recipe)
+	if not magicalities.data[player_name] then
+		magicalities.load_player_data(player_name)
+	end
+
+	local success = false
+	local msgname = "to craft "
+
+	if recipe and not magicalities.player_has_recipe(player_name, item) then
+		local recipe_n = recipes[item]
+		if recipe_n then
+			recipe_n = recipe_n.description
+		end
+		table.insert(magicalities.data[player_name].recipes, item)
+		success = true
+		msgname = msgname .. recipe_n
+	elseif not recipe and not magicalities.player_has_ability(player_name, item) then
+		local ability_n = abilities[item]
+		if ability_n then
+			ability_n = ability_n.description
+		end
+		table.insert(magicalities.data[player_name].abilities, item)
+		success = true
+		msgname = "to " .. ability_n
+	end
+
+	if success then
+		magicalities.save_player_data(player_name)
+		minetest.chat_send_player(player_name, "You have learned " .. msgname .. "!")
+	end
+end
+
+-- Add/remove research points
+function magicalities.deal_research_points(player_name, points)
+	if not magicalities.data[player_name] then
+		magicalities.load_player_data(player_name)
+	end
+
+	magicalities.data[player_name].research = magicalities.data[player_name].research + points
+	if magicalities.data[player_name].research < 0 then
+		magicalities.data[player_name].research = 0
+	end
+
+	magicalities.save_player_data(player_name)
+end
+
+-- Registration
+
+function magicalities.register_recipe_learnable(data)
+	if not data.name or not data.description then return end
+	recipes[data.name] = data
+end
+
+function magicalities.register_ability_learnable(data)
+	if not data.name or not data.description then return end
+	abilities[data.name] = data
+end

book.lua

@@ -1,8 +1,26 @@
 
+local function book_formspec(user)
+	local avail_list = magicalities.available_to_player(user, true)
+	print(dump(avail_list))
+	return "size[5,6]"..
+		default.gui_bg..
+		default.gui_bg_img..
+		default.gui_slots
+end
+
+local function book_read(itemstack, user, pointed_thing)
+	local uname = user:get_player_name()
+	minetest.show_formspec(uname, "magicalities:book", book_formspec(uname))
+	return itemstack
+end
+
 minetest.register_craftitem("magicalities:book", {
 	description = "Magicalities' Guide for Witches and Wizards",
 	inventory_image = "magicalities_book.png",
-	on_place = function (itemstack, user, pointed_thing)
+	on_place = book_read,
+	on_secondary_use = book_read,
+	_wand_created = function (itemstack, wand, user, pos)
+		itemstack:get_meta():set_string("player", user:get_player_name())
 		return itemstack
 	end
 })

cauldron.lua

@@ -1,26 +1,35 @@
 
 local _fldlib = minetest.get_modpath("fluid_lib") ~= nil
 
-magicalities.cauldron = {
-	recipes = {
-		{
-			items = {"default:steel_ingot", "default:obsidian"},
-			requirements = {
-				earth = 1,
-				dark  = 1,
-			},
-			output = "magicalities:tellium"
-		},
-		{
-			items = {"default:stone", "default:dirt", "magicalities:crystal_fire"},
-			requirements = {
-				fire  = 5,
-				earth = 5,
-			},
-			output = "magicalities:transterra"
-		}
-	}
-}
+magicalities.cauldron = { recipes = {} }
+
+function magicalities.cauldron.register_recipe(data)
+	if data.learnable then
+		local recipe_data = { name = data.output }
+		if type(data.learnable) == "string" then
+			recipe_data.name = data.learnable
+		end
+
+		if type(data.learnable) == "table" then
+			recipe_data = table.copy(data.learnable)
+			if not recipe_data.name then
+				recipe_data.name = data.output
+			end
+			data.learnable = recipe_data.name
+		end
+
+		if not recipe_data.description then
+			local itm = minetest.registered_items[data.output]
+			recipe_data.description = itm.description
+		else
+			recipe_data.description = data.description .. ""
+		end
+
+		magicalities.register_recipe_learnable(recipe_data)
+	end
+
+	table.insert(magicalities.cauldron.recipes, data)
+end
 
 local function flatten_stacks(stacks)
 	local temp = {}
@@ -147,6 +156,7 @@ local _clddef = {
 		end
 
 		if not recipe then return itemstack end
+		if recipe.learnable and not magicalities.player_has_recipe(magicalities.wands.get_wand_owner(itemstack), recipe.learnable) then return itemstack end
 
 		for j = 1, 16 do
 			if not recipe then break end

craftitems.lua

@@ -1,4 +1,35 @@
 
+local function grant_research(itemstack, placer, pointed_thing)
+	if not placer or placer:get_player_name() == "" then return itemstack end
+	local name = placer:get_player_name()
+	local points = math.random(0, 10)
+
+	if points == 0 then
+		minetest.chat_send_player(name, "This Research Note did not contain anything interesting.")
+	else
+		magicalities.deal_research_points(name, points)
+		minetest.chat_send_player(name, "This Research Note has granted you some knowledge about magic!")
+	end
+
+	if not (creative and creative.is_enabled_for and creative.is_enabled_for(name)) then
+		itemstack:take_item(1)
+	end
+
+	return itemstack
+end
+
+local function learn_research(paper, player)
+	local name = player:get_player_name()
+	local meta = paper:get_meta()
+	local t = meta:get_int("type")
+	local l = meta:get_string("learn")
+	if l ~= "" and t ~= 0 then
+		magicalities.player_learn(name, l, t == 2)
+		paper:take_item(1)
+	end
+	return paper
+end
+
 minetest.register_craftitem("magicalities:wand_core", {
 	description = "Wand Core",
 	inventory_image = "magicalities_wand_core.png"
@@ -31,23 +62,31 @@ minetest.register_craftitem("magicalities:transterra", {
 	groups = {shard = 1, transterra = 1}
 })
 
-local function grant_research(itemstack, placer, pointed_thing)
-	if not placer or placer:get_player_name() == "" then return itemstack end
-	local name = placer:get_player_name()
-	local points = math.random(1, 10)
-	magicalities.deal_research_points(name, points)
-	minetest.chat_send_player(name, "This Research Note granted you " .. points .. " Research Points!")
-	if not (creative and creative.is_enabled_for and creative.is_enabled_for(name)) then
-		itemstack:take_item(1)
-	end
-	return itemstack
-end
-
 minetest.register_craftitem("magicalities:note", {
-	description = "Research Note",
+	description = "Research Note\nRight-Click to read and learn!",
 	inventory_image = "magicalities_note.png",
 	groups = {note = 1},
 	on_place = grant_research,
 	on_secondary_use = grant_research
 })
 
+minetest.register_craftitem("magicalities:research", {
+	description = minetest.colorize("#007bff", "Research Paper") .. "\nIncomplete.",
+	inventory_image = "magicalities_research.png",
+	groups = {note = 1, not_in_creative_inventory = 1},
+	stack_max = 1
+})
+
+minetest.register_craftitem("magicalities:research_complete", {
+	description = minetest.colorize("#f600ff", "Research Paper (Completed)") .. "\nRight-Click to read and learn!",
+	inventory_image = "magicalities_research_complete.png",
+	groups = {note = 1, not_in_creative_inventory = 1},
+	stack_max = 1,
+	on_place = learn_research,
+	on_secondary_use = learn_research
+})
+
+minetest.register_tool("magicalities:ink_and_quill", {
+	description = "Ink and Quill",
+	inventory_image = "magicalities_quill.png"
+})

init.lua

@@ -19,6 +19,9 @@ magicalities.elements = {
 -- Storage
 dofile(modpath.."/storage.lua")
 
+-- Player abilities
+dofile(modpath.."/ability.lua")
+
 -- Crystals
 dofile(modpath.."/crystals.lua")
 
@@ -30,6 +33,7 @@ dofile(modpath.."/focuses.lua")
 
 -- Tables
 dofile(modpath.."/table.lua")
+dofile(modpath.."/research_table.lua")
 
 -- Nodes
 dofile(modpath.."/nodes.lua")

nodes.lua

@@ -10,3 +10,112 @@ minetest.register_node("magicalities:tree_enchanted", {
 
 	on_place = minetest.rotate_node
 })
+
+-- Researchable bookshelf
+-- Supposed to be a generated node that gives Research Notes
+minetest.register_node("magicalities:bookshelf", {
+	description = "Wise Bookshelf",
+	tiles = {"default_wood.png", "default_wood.png", "default_wood.png",
+		"default_wood.png", "default_bookshelf.png", "default_bookshelf.png"},
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	groups = {choppy = 3, oddly_breakable_by_hand = 2, flammable = 3, not_in_creative_inventory = 1},
+	sounds = default.node_sound_wood_defaults(),
+	drop = "default:bookshelf",
+	on_rightclick = function (pos, node, clicker, itemstack, pointed_thing)
+		if not clicker or clicker:get_player_name() == "" then return itemstack end
+		local name = clicker:get_player_name()
+		local count = math.random(0, 3)
+
+		-- Swap the node with an ordinary bookshelf after inspecting
+		node.name = "default:bookshelf"
+		minetest.swap_node(pos, node)
+		minetest.registered_nodes[node.name].on_construct(pos)
+
+		-- A chance of not getting anything from this bookshelf
+		if count == 0 then
+			minetest.chat_send_player(name, "This bookshelf did not contain anything interesting.")
+			return itemstack
+		end
+
+		-- Add some books into the new bookshelf
+		local bookinv = minetest.get_meta(pos):get_inventory()
+		bookinv:add_item("books", ItemStack("default:book " .. count))
+
+		-- Give player Research Notes
+		local item = ItemStack("magicalities:note")
+		item:set_count(count)
+
+		local inv = clicker:get_inventory()
+		if inv:room_for_item("main", item) then
+			-- idk
+			inv:add_item("main", item)
+		else
+			minetest.item_drop(item, clicker, clicker:get_pos())
+		end
+
+		minetest.chat_send_player(name, "You have read some of the books in this bookshelf and wrote up some notes.")
+
+		return itemstack
+	end
+})
+
+local nboxcollsel = {
+	type = "fixed",
+	fixed = {
+		{-0.375, -0.5, 0.1875, -0.1875, -0.375, 0.375}, -- pot-base
+		{-0.3125, -0.375, 0.25, -0.25, -0.3125, 0.3125}, -- pot-head
+	}
+}
+
+local nbox = {
+	type = "fixed",
+	fixed = {
+		{-0.375, -0.5, 0.1875, -0.1875, -0.375, 0.375}, -- pot-base
+		{-0.3125, -0.375, 0.25, -0.25, -0.3125, 0.3125}, -- pot-head
+		{-0.28125, -0.3125, 0.125, -0.28125, 0.1875, 0.4375}, -- feather
+		{-0.5, -0.5, -0.5, 0.5, -0.5, 0.5}, -- paper-base
+	}
+}
+
+minetest.register_node("magicalities:quill", {
+	description = "Quill",
+	tiles = {
+		"magicalities_quill_top.png",
+		"magicalities_quill_top.png^[transformFY",
+		"magicalities_quill_right.png",
+		"magicalities_quill_right.png^[transformFX",
+		"magicalities_quill_front.png^[transformFX",
+		"magicalities_quill_front.png"
+	},
+	drawtype = "nodebox",
+	paramtype = "light",
+	sunlight_propagates = true,
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	node_box = nbox,
+	selection_box = nboxcollsel,
+	collision_box = nboxcollsel,
+	groups = { not_in_creative_inventory = 1 },
+})
+
+minetest.register_node("magicalities:quill_research", {
+	tiles = {
+		"magicalities_quill_top_research.png",
+		"magicalities_quill_top.png^[transformFY",
+		"magicalities_quill_right.png",
+		"magicalities_quill_right.png^[transformFX",
+		"magicalities_quill_front.png^[transformFX",
+		"magicalities_quill_front.png"
+	},
+	drawtype = "nodebox",
+	paramtype = "light",
+	sunlight_propagates = true,
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	drop = "magicalities:quill",
+	node_box = nbox,
+	selection_box = nboxcollsel,
+	collision_box = nboxcollsel,
+	groups = { not_in_creative_inventory = 1 },
+})

register.lua

@@ -61,7 +61,8 @@ local recipes = {
 			["fire"]  = 25,
 			["dark"]  = 25,
 			["air"]   = 25,
-		}
+		},
+		learnable = true
 	},
 	{
 		input = {
@@ -85,6 +86,9 @@ local recipes = {
 		requirements = {
 			["light"] = 10,
 			["dark"] = 10,
+		},
+		learnable = {
+			depends = {"magicalities:tellium"}
 		}
 	},
 	{
@@ -96,6 +100,9 @@ local recipes = {
 		output = "magicalities:focus_atk_earth",
 		requirements = {
 			["earth"] = 50,
+		},
+		learnable = {
+			depends = {"magicalities:focus_blank"}
 		}
 	},
 	{
@@ -107,6 +114,9 @@ local recipes = {
 		output = "magicalities:focus_atk_air",
 		requirements = {
 			["air"] = 50,
+		},
+		learnable = {
+			depends = {"magicalities:focus_blank"}
 		}
 	},
 	{
@@ -118,6 +128,9 @@ local recipes = {
 		output = "magicalities:focus_atk_water",
 		requirements = {
 			["water"] = 50,
+		},
+		learnable = {
+			depends = {"magicalities:focus_blank"}
 		}
 	},
 	{
@@ -129,6 +142,9 @@ local recipes = {
 		output = "magicalities:focus_atk_fire",
 		requirements = {
 			["fire"] = 50,
+		},
+		learnable = {
+			depends = {"magicalities:focus_blank"}
 		}
 	},
 	{
@@ -141,6 +157,9 @@ local recipes = {
 		requirements = {
 			["earth"] = 25,
 			["light"] = 25,
+		},
+		learnable = {
+			depends = {"magicalities:focus_atk_earth"}
 		}
 	},
 	{
@@ -153,6 +172,9 @@ local recipes = {
 		requirements = {
 			["earth"] = 25,
 			["dark"]  = 25,
+		},
+		learnable = {
+			depends = {"magicalities:focus_blank", "magicalities:transterra"}
 		}
 	},
 	{
@@ -164,6 +186,9 @@ local recipes = {
 		output = "magicalities:focus_teleport",
 		requirements = {
 			["air"] = 10,
+		},
+		learnable = {
+			depends = {"magicalities:focus_blank"}
 		}
 	}
 }
@@ -172,6 +197,35 @@ for _, recipe in pairs(recipes) do
 	magicalities.arcane.register_recipe(recipe)
 end
 
+--------------
+-- Cauldron --
+--------------
+
+local cauldron_recipes = {
+	{
+		items = {"default:steel_ingot", "default:obsidian"},
+		requirements = {
+			earth = 1,
+			dark  = 1,
+		},
+		output = "magicalities:tellium",
+		learnable = true
+	},
+	{
+		items = {"default:stone", "default:dirt", "magicalities:crystal_fire"},
+		requirements = {
+			fire  = 5,
+			earth = 5,
+		},
+		output = "magicalities:transterra",
+		learnable = true
+	}
+}
+
+for _, recipe in pairs(cauldron_recipes) do
+	magicalities.cauldron.register_recipe(recipe)
+end
+
 --------------------
 -- Basic Crafting --
 --------------------
@@ -279,14 +333,20 @@ if minetest.get_modpath("craftguide") ~= nil then
 		icon = "magicalities_cauldron.png",
 	})
 
-	for g,v in pairs(magicalities.cauldron.recipes) do
+	for g,v in pairs(cauldron_recipes) do
 		register_craftguide_recipe("cauldron", v.output, v.items)
 	end
 end
 
--- Other
+-- Abilities
 
 magicalities.register_ability_learnable({
 	name = "magicalities:pickup_jarred",
-	description = "pick up nodes using jars"
+	description = "pick up crystals using jars"
+})
+
+magicalities.register_recipe_learnable({
+	name = "magicalities:cauldron",
+	description = "Cauldron",
+	default = true
 })

research_table.lua

@@ -0,0 +1,125 @@
+
+magicalities.researching = {}
+
+local function table_formspec()
+	return "size[8,8.5]"..
+		default.gui_bg..
+		default.gui_bg_img..
+		default.gui_slots..
+		"image[0.5,0.5;1,1;magicalities_gui_book_slot.png]"..
+		"list[context;book;0.5,0.5;1,1;]"..
+		"image[1.5,0.5;1,1;magicalities_gui_quill_slot.png]"..
+		"list[context;tools;1.5,0.5;1,1;]"..
+		"image[2.5,0.5;1,1;magicalities_gui_paper_slot.png]"..
+		"list[context;paper;2.5,0.5;3,3;]"..
+		"list[current_player;main;0,4.25;8,1;]"..
+		"list[current_player;main;0,5.5;8,3;8]"..
+		"listring[current_player;main]"..
+		"listring[context;book]"..
+		"listring[current_player;main]"..
+		"listring[context;paper]"..
+		"listring[current_player;main]"..
+		"listring[context;tools]"..
+		"listring[current_player;main]"..
+		default.get_hotbar_bg(0, 4.25)
+end
+
+local function table_use(pos, node, clicker, itemstack, pointed_thing)
+	return itemstack
+end
+
+local function allow_metadata_inventory_put (pos, listname, index, stack, player)
+	if minetest.is_protected(pos, player:get_player_name()) then
+		return 0
+	end
+
+	if (listname == "book" and stack:get_name() ~= "magicalities:book") or 
+		(listname == "paper" and stack:get_name() ~= "magicalities:research" and stack:get_name() ~= "default:paper") or 
+		(listname == "tools" and stack:get_name() ~= "magicalities:ink_and_quill") then
+		return 0
+	end
+
+	return 1
+end
+
+local function allow_metadata_inventory_move (pos, from_list, from_index, to_list, to_index, count, player)
+	local meta = minetest.get_meta(pos)
+	local inv = meta:get_inventory()
+	local stack = inv:get_stack(from_list, from_index)
+
+	return allow_metadata_inventory_put(pos, to_list, to_index, stack, player)
+end
+
+local function allow_metadata_inventory_take (pos, listname, index, stack, player)
+	if minetest.is_protected(pos, player:get_player_name()) then
+		return 0
+	end
+	return stack:get_count()
+end
+
+local function table_inventory_changed (pos, listname, index, stack, player)
+	local meta = minetest.get_meta(pos)
+	local inv = meta:get_inventory()
+
+	local vec = vector.add(pos,{x=0,y=1,z=0})
+	local node = minetest.get_node_or_nil(vec)
+	if inv:get_stack("tools", 1):is_empty() then
+		if node and (node.name == "magicalities:quill" or node.name == "magicalities:quill_research") then
+			minetest.set_node(vec, {name="air"})
+		end
+	elseif node then
+		local dir = minetest.dir_to_facedir(vector.normalize(vector.subtract(pos, player:get_pos())), false)
+		local ver = "magicalities:quill"
+		if not inv:get_stack("paper", 1):is_empty() then
+			ver = "magicalities:quill_research"
+		end
+		minetest.set_node(vec, {name=ver,param2=dir})
+	end
+end
+
+-- Base Table Override
+minetest.override_item("magicalities:table", {
+	on_construct = function (pos)
+		local meta = minetest.get_meta(pos)
+		local inv = meta:get_inventory()
+		inv:set_size("book", 1)
+		inv:set_size("tools", 1)
+		inv:set_size("paper", 1)
+
+		meta:set_string("formspec", table_formspec())
+	end,
+	on_destruct = function (pos)
+		local vec = vector.add(pos,{x=0,y=1,z=0})
+		local node = minetest.get_node_or_nil(vec)
+		if node and node.name == "magicalities:quill" then
+			minetest.set_node(vec, {name="air"})
+		end
+	end,
+	on_rightclick = table_use,
+	can_dig = function (pos)
+		local meta = minetest.get_meta(pos)
+		local inv = meta:get_inventory()
+		return inv:get_stack("book", 1):is_empty() and inv:get_stack("paper", 1):is_empty() and inv:get_stack("tools", 1):is_empty()
+	end,
+	allow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+	allow_metadata_inventory_move = allow_metadata_inventory_move,
+	on_metadata_inventory_take = table_inventory_changed,
+	on_metadata_inventory_put = table_inventory_changed,
+	on_metadata_inventory_move = table_inventory_changed,
+})
+
+-- Remove floating quills
+minetest.register_lbm({
+	label = "Remove floating quills",
+	name = "magicalities:quill_cleanup",
+	nodenames = {"magicalities:quill", "magicalities:quill_research"},
+	run_at_every_load = true,
+	action = function(pos, node)
+		local vecunder = vector.add(pos,{x=0,y=-1,z=0})
+		local nodeunder = minetest.get_node_or_nil(vecunder)
+		if not nodeunder or nodeunder.name ~= "magicalities:table" then
+			minetest.set_node(pos, {name="air"})
+		end
+	end,
+})

storage.lua

@@ -11,8 +11,6 @@
 
 -- Modstorage
 local storage = minetest.get_mod_storage()
-local abilities = {}
-local recipes = {}
 
 -- Memory cache
 magicalities.data = {}
@@ -53,109 +51,6 @@ function magicalities.save_all_data()
 	end
 end
 
--- Getters
-
-function magicalities.player_has_recipe(player, recipe_name)
-	if not magicalities.data[player] then return false end
-	return table.indexof(magicalities.data[player].recipes, recipe_name) ~= -1
-end
-
-function magicalities.player_has_ability(player, ability_name)
-	if not magicalities.data[player] then return false end
-	return table.indexof(magicalities.data[player].abilities, ability_name) ~= -1
-end
-
-function magicalities.player_research(player)
-	if not magicalities.data[player] then return 0 end
-	return magicalities.data[player].research
-end
-
--- Check if a recipe/ability depends on another recipe/ability
-function magicalities.learn_meets_prerequisites(player_name, item, recipe)
-	local a = abilities
-	local c = magicalities.player_has_ability
-
-	if recipe then
-		a = recipes
-		c = magicalities.player_has_recipe
-	end
-
-	if not a[item] then return false end
-	if a[item].depends then
-		local can = true
-		for v in pairs(a[item].depends) do
-			if not c(player, v) then
-				can = false
-				break
-			end
-		end
-		if not can then return false end
-	end
-
-	return true
-end
-
--- Setters
-
--- Learn a recipe or an ability
-function magicalities.player_learn(player_name, item, recipe)
-	if not magicalities.data[player_name] then
-		magicalities.load_player_data(player_name)
-	end
-
-	local success = false
-	local msgname = "to craft "
-
-	if recipe and not magicalities.player_has_recipe(player_name, item) then
-		local recipe_n = recipes[item]
-		if recipe_n then
-			recipe_n = recipe_n.description
-		end
-		table.insert(magicalities.data[player_name].recipes, item)
-		success = true
-		msgname = msgname .. recipe_n
-	elseif not recipe and not magicalities.player_has_ability(player_name, item) then
-		local ability_n = abilities[item]
-		if ability_n then
-			ability_n = ability_n.description
-		end
-		table.insert(magicalities.data[player_name].abilities, item)
-		success = true
-		msgname = "to " .. ability_n
-	end
-
-	if success then
-		magicalities.save_player_data(player_name)
-		minetest.chat_send_player(player_name, "You have learned " .. msgname .. "!")
-	end
-end
-
--- Add/remove research points
-function magicalities.deal_research_points(player_name, points)
-	if not magicalities.data[player_name] then
-		magicalities.load_player_data(player_name)
-	end
-
-	magicalities.data[player_name].research = magicalities.data[player_name].research + points
-	if magicalities.data[player_name].research < 0 then
-		magicalities.data[player_name].research = 0
-	end
-
-	magicalities.save_player_data(player_name)
-end
-
--- Registration
-
-function magicalities.register_recipe_learnable (data)
-	if not data.name or not data.description then return end
-	recipes[data.name] = data
-end
-
-function magicalities.register_ability_learnable (data)
-	if not data.name or not data.description then return end
-	abilities[data.name] = data
-end
-
 -- System Actions
 
 minetest.register_on_shutdown(magicalities.save_all_data)

table.lua

@@ -70,13 +70,24 @@ end
 function magicalities.arcane.register_recipe(data)
 	if data.learnable then
 		local recipe_data = { name = data.output }
+		if type(data.learnable) == "string" then
+			recipe_data.name = data.learnable
+		end
 
-		if not data.description then
-			local itm = minetest.registered_items[data.output]
-			recipe_data.description = itm.description
+		if type(data.learnable) == "table" then
+			recipe_data = table.copy(data.learnable)
+			if not recipe_data.name then
+				recipe_data.name = data.output
+			end
+			data.learnable = recipe_data.name
 		else
-			recipe_data.description = data.description .. ""
-			data.description = nil
+			if not data.description then
+				local itm = minetest.registered_items[data.output]
+				recipe_data.description = itm.description
+			else
+				recipe_data.description = data.description .. ""
+				data.description = nil
+			end
 		end
 
 		magicalities.register_recipe_learnable(recipe_data)
@@ -156,18 +167,12 @@ function magicalities.arcane.get_recipe(items)
 	local recipe = compare_find(split)
 
 	if not recipe then return nil end
-	local result = {new_input = {}, output = recipe.output, requirements = recipe.requirements, learn = nil}
+	local result = {new_input = {}, output = recipe.output, requirements = recipe.requirements, learnable = recipe.learnable}
 	for _,stack in pairs(items) do
 		stack:take_item(1)
 		result.new_input[#result.new_input + 1] = stack
 	end
 
-	print(dump(recipe))
-
-	if recipe.learnable then
-		result.learn = recipe.output
-	end
-
 	return result
 end
 
@@ -248,7 +253,7 @@ local function update_craft(pos)
 	-- Check if the recipe has been learned by the player
 	local wand = inv:get_stack("wand", 1)
 	if not recipe or wand:is_empty() and 
-		(recipe.learn ~= nil and not magicalities.player_has_recipe(magicalities.wands.get_wand_owner(wand), recipe.learn)) then
+		(recipe.learnable ~= nil and not magicalities.player_has_recipe(magicalities.wands.get_wand_owner(wand), recipe.learnable)) then
 		meta:set_string("formspec", arcane_table_formspec({}))
 		inv:set_list("craftres", {})
 		return

wands.lua

@@ -2,6 +2,15 @@
 
 magicalities.wands = {}
 
+-- This is a method of picking up crystals without breaking them into shards and preserving all of their elements.
+-- Surround a crystal in a 3x3 thing of glass, except for the top layer, which has to be wood slabs.
+-- When the structure is complete, hit any node of glass with the wand.
+-- Views from the side:
+--        (middle)
+--   sss    sss    sss
+--   ggg    gxg    ggg
+--   ggg    ggg    ggg
+-- s: stairs:slab_wood, g: default:glass, x: group:crystal_cluster
 local function pickup_jarred(itemstack, user, glassp)
 	local node = minetest.get_node_or_nil(glassp)
 	if not node or node.name ~= "default:glass" then return nil end
@@ -133,13 +142,14 @@ function magicalities.wands.update_wand_desc(stack)
 	local elems = {}
 	for elem, amount in pairs(data_table) do
 		local dataelem = magicalities.elements[elem]
-		if amount > 0 then
-			if amount < 10 then amount = "0"..amount end
-			local str = "["..amount.."/"..capcontents.."] "
-			str = str .. minetest.colorize(dataelem.color, dataelem.description)
-			if focus and fdef and fdef['_wand_requirements'] and fdef['_wand_requirements'][elem] ~= nil then
-				str = str .. minetest.colorize("#a070e0", " ("..fdef['_wand_requirements'][elem]..") ")
-			end
+		local visual = amount
+		if amount < 10 then visual = "0" .. amount end
+		if amount == 0 then visual = minetest.colorize("#ff0505", visual) end
+		local str = "["..visual.."/"..capcontents.."] "
+		str = str .. minetest.colorize(dataelem.color, dataelem.description)
+		if focus and fdef and fdef['_wand_requirements'] and fdef['_wand_requirements'][elem] ~= nil then
+			elems[#elems + 1] = str .. minetest.colorize("#a070e0", " ("..fdef['_wand_requirements'][elem]..") ")
+		elseif amount ~= 0 then
 			elems[#elems + 1] = str
 		end
 	end
@@ -236,7 +246,7 @@ function magicalities.wands.wand_insertable_contents(stack, to_put)
 end
 
 -- Initialize wand metadata
-local function initialize_wand(stack)
+local function initialize_wand(stack, player)
 	local data_table = {}
 
 	for name, data in pairs(magicalities.elements) do
@@ -246,6 +256,7 @@ local function initialize_wand(stack)
 	end
 
 	local meta = stack:get_meta()
+	meta:set_string("player", player)
 	meta:set_string("contents", minetest.serialize(data_table))
 end
 
@@ -255,12 +266,9 @@ local function wand_action(itemstack, placer, pointed_thing)
 	local node = minetest.get_node(pointed_thing.under)
 	local imeta = itemstack:get_meta()
 
-	-- Set last wand user
-	imeta:set_string("player", placer:get_player_name())
-
 	-- Initialize wand metadata
 	if imeta:get_string("contents") == nil or imeta:get_string("contents") == "" then
-		initialize_wand(itemstack)
+		initialize_wand(itemstack, placer:get_player_name())
 		magicalities.wands.update_wand_desc(itemstack)
 	end
 
@@ -286,12 +294,9 @@ end
 local function use_wand(itemstack, user, pointed_thing)
 	local imeta = itemstack:get_meta()
 
-	-- Set last wand user
-	imeta:set_string("player", user:get_player_name())
-
 	-- Initialize wand metadata
 	if imeta:get_string("contents") == "" then
-		initialize_wand(itemstack)
+		initialize_wand(itemstack, user:get_player_name())
 		magicalities.wands.update_wand_desc(itemstack)
 	end
 
@@ -336,6 +341,15 @@ local function use_wand(itemstack, user, pointed_thing)
 		to_replace = nil
 	end
 
+	-- Make sure we can "dig" the node before we, potentially, remove it from the world
+	if to_replace then
+		local ndef = minetest.registered_items[node.name]
+		if ndef.can_dig and not ndef.can_dig(pos, user) then
+			to_replace = nil
+		end
+	end
+
+	-- Commit action
 	if to_replace then
 		local take_req = true
 
@@ -347,10 +361,15 @@ local function use_wand(itemstack, user, pointed_thing)
 				itemstack = t
 			end
 		elseif to_replace.drop then
-			minetest.add_item(pos, ItemStack(to_replace.result))
+			local istack = ItemStack(to_replace.result)
+			local istackdef = minetest.registered_items[to_replace.result]
+			if istackdef._wand_created then
+				istack = istackdef._wand_created(istack, itemstack, user, pos)
+			end
+			minetest.add_item(pos, istack)
 			minetest.set_node(pos, {name = "air"})
 		else
-			minetest.swap_node(pos, {name = to_replace.result, param1 = node.param1, param2 = node.param2})
+			minetest.set_node(pos, {name = to_replace.result, param1 = node.param1, param2 = node.param2})
 			local spec = minetest.registered_nodes[to_replace.result]
 			if spec.on_construct then
 				spec.on_construct(pos)