VoxeLibre/mods/ITEMS/mcl_enchanting/engine.lua
Elias Åström 731dc4947b Fix efficiency and unbreaking not working together
This commit fixes an issue were tools enchanted with both efficiency and
unbreaking would loose the effect of one of the enchantments in some
conditions.
2021-04-26 00:33:27 +00:00

662 lines
25 KiB
Lua

local S = minetest.get_translator("mcl_enchanting")
local F = minetest.formspec_escape
function mcl_enchanting.is_book(itemname)
return itemname == "mcl_books:book" or itemname == "mcl_enchanting:book_enchanted" or itemname == "mcl_books:book_enchanted"
end
function mcl_enchanting.get_enchantments(itemstack)
return minetest.deserialize(itemstack:get_meta():get_string("mcl_enchanting:enchantments")) or {}
end
function mcl_enchanting.unload_enchantments(itemstack)
local itemdef = itemstack:get_definition()
if itemdef.tool_capabilities then
itemstack:get_meta():set_tool_capabilities(itemdef.tool_capabilities)
end
local meta = itemstack:get_meta()
if meta:get_string("name") == "" then
meta:set_string("description", "")
meta:set_string("groupcaps_hash", "")
end
end
function mcl_enchanting.load_enchantments(itemstack, enchantments)
if not mcl_enchanting.is_book(itemstack:get_name()) then
mcl_enchanting.unload_enchantments(itemstack)
for enchantment, level in pairs(enchantments or mcl_enchanting.get_enchantments(itemstack)) do
local enchantment_def = mcl_enchanting.enchantments[enchantment]
if enchantment_def.on_enchant then
enchantment_def.on_enchant(itemstack, level)
end
end
end
tt.reload_itemstack_description(itemstack)
end
function mcl_enchanting.set_enchantments(itemstack, enchantments)
itemstack:get_meta():set_string("mcl_enchanting:enchantments", minetest.serialize(enchantments))
mcl_enchanting.load_enchantments(itemstack)
end
function mcl_enchanting.get_enchantment(itemstack, enchantment)
return mcl_enchanting.get_enchantments(itemstack)[enchantment] or 0
end
function mcl_enchanting.has_enchantment(itemstack, enchantment)
return mcl_enchanting.get_enchantment(itemstack, enchantment) > 0
end
function mcl_enchanting.get_enchantment_description(enchantment, level)
local enchantment_def = mcl_enchanting.enchantments[enchantment]
return enchantment_def.name .. (enchantment_def.max_level == 1 and "" or " " .. mcl_enchanting.roman_numerals.toRoman(level))
end
function mcl_enchanting.get_colorized_enchantment_description(enchantment, level)
return minetest.colorize(mcl_enchanting.enchantments[enchantment].curse and mcl_colors.RED or mcl_colors.GRAY, mcl_enchanting.get_enchantment_description(enchantment, level))
end
function mcl_enchanting.get_enchanted_itemstring(itemname)
local def = minetest.registered_items[itemname]
return def and def._mcl_enchanting_enchanted_tool
end
function mcl_enchanting.set_enchanted_itemstring(itemstack)
itemstack:set_name(mcl_enchanting.get_enchanted_itemstring(itemstack:get_name()))
end
function mcl_enchanting.is_enchanted(itemname)
return minetest.get_item_group(itemname, "enchanted") > 0
end
function mcl_enchanting.is_enchantable(itemname)
return mcl_enchanting.get_enchantability(itemname) > 0
end
function mcl_enchanting.can_enchant_freshly(itemname)
return mcl_enchanting.is_enchantable(itemname) and not mcl_enchanting.is_enchanted(itemname)
end
function mcl_enchanting.get_enchantability(itemname)
return minetest.get_item_group(itemname, "enchantability")
end
function mcl_enchanting.item_supports_enchantment(itemname, enchantment, early)
if not mcl_enchanting.is_enchantable(itemname) then
return false
end
local enchantment_def = mcl_enchanting.enchantments[enchantment]
if mcl_enchanting.is_book(itemname) then
return true, (not enchantment_def.treasure)
end
local itemdef = minetest.registered_items[itemname]
if itemdef.type ~= "tool" and enchantment_def.requires_tool then
return false
end
for disallow in pairs(enchantment_def.disallow) do
if minetest.get_item_group(itemname, disallow) > 0 then
return false
end
end
for group in pairs(enchantment_def.primary) do
if minetest.get_item_group(itemname, group) > 0 then
return true, true
end
end
for group in pairs(enchantment_def.secondary) do
if minetest.get_item_group(itemname, group) > 0 then
return true, false
end
end
return false
end
function mcl_enchanting.can_enchant(itemstack, enchantment, level)
local enchantment_def = mcl_enchanting.enchantments[enchantment]
if not enchantment_def then
return false, "enchantment invalid"
end
local itemname = itemstack:get_name()
if itemname == "" then
return false, "item missing"
end
local supported, primary = mcl_enchanting.item_supports_enchantment(itemstack:get_name(), enchantment)
if not supported then
return false, "item not supported"
end
if not level then
return false, "level invalid"
end
if level > enchantment_def.max_level then
return false, "level too high", enchantment_def.max_level
elseif level < 1 then
return false, "level too small", 1
end
local item_enchantments = mcl_enchanting.get_enchantments(itemstack)
local enchantment_level = item_enchantments[enchantment]
if enchantment_level then
return false, "incompatible", mcl_enchanting.get_enchantment_description(enchantment, enchantment_level)
end
if not mcl_enchanting.is_book(itemname) then
for incompatible in pairs(enchantment_def.incompatible) do
local incompatible_level = item_enchantments[incompatible]
if incompatible_level then
return false, "incompatible", mcl_enchanting.get_enchantment_description(incompatible, incompatible_level)
end
end
end
return true, nil, nil, primary
end
function mcl_enchanting.enchant(itemstack, enchantment, level)
mcl_enchanting.set_enchanted_itemstring(itemstack)
local enchantments = mcl_enchanting.get_enchantments(itemstack)
enchantments[enchantment] = level
mcl_enchanting.set_enchantments(itemstack, enchantments)
return itemstack
end
function mcl_enchanting.combine(itemstack, combine_with)
local itemname = itemstack:get_name()
local combine_name = combine_with:get_name()
local enchanted_itemname = mcl_enchanting.get_enchanted_itemstring(itemname)
if not enchanted_itemname or enchanted_itemname ~= mcl_enchanting.get_enchanted_itemstring(combine_name) and not mcl_enchanting.is_book(combine_name) then
return false
end
local enchantments = mcl_enchanting.get_enchantments(itemstack)
for enchantment, combine_level in pairs(mcl_enchanting.get_enchantments(combine_with)) do
local enchantment_def = mcl_enchanting.enchantments[enchantment]
local enchantment_level = enchantments[enchantment]
if enchantment_level then
if enchantment_level == combine_level then
enchantment_level = math.min(enchantment_level + 1, enchantment_def.max_level)
else
enchantment_level = math.max(enchantment_level, combine_level)
end
elseif mcl_enchanting.item_supports_enchantment(itemname, enchantment) then
local supported = true
for incompatible in pairs(enchantment_def.incompatible) do
if enchantments[incompatible] then
supported = false
break
end
end
if supported then
enchantment_level = combine_level
end
end
if enchantment_level and enchantment_level > 0 then
enchantments[enchantment] = enchantment_level
end
end
local any_enchantment = false
for enchantment, enchantment_level in pairs(enchantments) do
if enchantment_level > 0 then
any_enchantment = true
break
end
end
if any_enchantment then
itemstack:set_name(enchanted_itemname)
end
mcl_enchanting.set_enchantments(itemstack, enchantments)
return true
end
function mcl_enchanting.enchantments_snippet(_, _, itemstack)
if not itemstack then
return
end
local enchantments = mcl_enchanting.get_enchantments(itemstack)
local text = ""
for enchantment, level in pairs(enchantments) do
text = text .. mcl_enchanting.get_colorized_enchantment_description(enchantment, level) .. "\n"
end
if text ~= "" then
if not itemstack:get_definition()._tt_original_description then
text = text:sub(1, text:len() - 1)
end
return text, false
end
end
-- Returns the after_use callback function to use when registering an enchanted
-- item. The after_use callback is used to update the tool_capabilities of
-- efficiency enchanted tools with outdated digging times.
--
-- It does this by calling apply_efficiency to reapply the efficiency
-- enchantment. That function is written to use hash values to only update the
-- tool if neccessary.
--
-- This is neccessary for digging times of tools to be in sync when MineClone2
-- or mods add new hardness values.
local function get_after_use_callback(itemdef)
if itemdef.after_use then
-- If the tool already has an after_use, make sure to call that
-- one too.
return function(itemstack, user, node, digparams)
itemdef.after_use(itemstack, user, node, digparams)
mcl_enchanting.update_groupcaps(itemstack)
end
end
-- If the tool does not have after_use, add wear to the tool as if no
-- after_use was registered.
return function(itemstack, user, node, digparams)
if not minetest.is_creative_enabled(user) then
itemstack:add_wear(digparams.wear)
end
local enchantments = mcl_enchanting.get_enchantments(itemstack)
mcl_enchanting.update_groupcaps(itemstack)
end
end
function mcl_enchanting.initialize()
local register_tool_list = {}
local register_item_list = {}
for itemname, itemdef in pairs(minetest.registered_items) do
if mcl_enchanting.can_enchant_freshly(itemname) and not mcl_enchanting.is_book(itemname) then
local new_name = itemname .. "_enchanted"
minetest.override_item(itemname, {_mcl_enchanting_enchanted_tool = new_name})
local new_def = table.copy(itemdef)
new_def.inventory_image = itemdef.inventory_image .. mcl_enchanting.overlay
if new_def.wield_image then
new_def.wield_image = new_def.wield_image .. mcl_enchanting.overlay
end
new_def.groups.not_in_creative_inventory = 1
new_def.groups.not_in_craft_guide = 1
new_def.groups.enchanted = 1
new_def.texture = itemdef.texture or itemname:gsub("%:", "_")
new_def._mcl_enchanting_enchanted_tool = new_name
new_def.after_use = get_after_use_callback(itemdef)
local register_list = register_item_list
if itemdef.type == "tool" then
register_list = register_tool_list
end
register_list[":" .. new_name] = new_def
end
end
for new_name, new_def in pairs(register_item_list) do
minetest.register_craftitem(new_name, new_def)
end
for new_name, new_def in pairs(register_tool_list) do
minetest.register_tool(new_name, new_def)
end
end
function mcl_enchanting.get_possible_enchantments(itemstack, enchantment_level, treasure)
local possible_enchantments, weights, accum_weight = {}, {}, 0
for enchantment, enchantment_def in pairs(mcl_enchanting.enchantments) do
local supported, _, _, primary = mcl_enchanting.can_enchant(itemstack, enchantment, 1)
if primary or treasure then
table.insert(possible_enchantments, enchantment)
accum_weight = accum_weight + enchantment_def.weight
weights[enchantment] = accum_weight
end
end
return possible_enchantments, weights, accum_weight
end
function mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted)
local itemname = itemstack:get_name()
if not mcl_enchanting.can_enchant_freshly(itemname) and not ignore_already_enchanted then
return
end
itemstack = ItemStack(itemstack)
local enchantability = minetest.get_item_group(itemname, "enchantability")
enchantability = 1 + math.random(0, math.floor(enchantability / 4)) + math.random(0, math.floor(enchantability / 4))
enchantment_level = enchantment_level + enchantability
enchantment_level = enchantment_level + enchantment_level * (math.random() + math.random() - 1) * 0.15
enchantment_level = math.max(math.floor(enchantment_level + 0.5), 1)
local enchantments = {}
local description
enchantment_level = enchantment_level * 2
repeat
enchantment_level = math.floor(enchantment_level / 2)
if enchantment_level == 0 then
break
end
local possible, weights, accum_weight = mcl_enchanting.get_possible_enchantments(itemstack, enchantment_level, treasure)
local selected_enchantment, enchantment_power
if #possible > 0 then
local r = math.random(accum_weight)
for _, enchantment in ipairs(possible) do
if weights[enchantment] >= r then
selected_enchantment = enchantment
break
end
end
local enchantment_def = mcl_enchanting.enchantments[selected_enchantment]
local power_range_table = enchantment_def.power_range_table
for i = enchantment_def.max_level, 1, -1 do
local power_range = power_range_table[i]
if enchantment_level >= power_range[1] and enchantment_level <= power_range[2] then
enchantment_power = i
break
end
end
if not description then
if not enchantment_power then
return
end
description = mcl_enchanting.get_enchantment_description(selected_enchantment, enchantment_power)
end
if enchantment_power then
enchantments[selected_enchantment] = enchantment_power
mcl_enchanting.enchant(itemstack, selected_enchantment, enchantment_power)
end
else
break
end
until not no_reduced_bonus_chance and math.random() >= (enchantment_level + 1) / 50
return enchantments, description
end
function mcl_enchanting.generate_random_enchantments_reliable(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted)
local enchantments
repeat
enchantments = mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted)
until enchantments
return enchantments
end
function mcl_enchanting.enchant_randomly(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted)
mcl_enchanting.set_enchanted_itemstring(itemstack)
mcl_enchanting.set_enchantments(itemstack, mcl_enchanting.generate_random_enchantments_reliable(itemstack, enchantment_level, treasure, no_reduced_bonus_chance, ignore_already_enchanted))
return itemstack
end
function mcl_enchanting.get_randomly_enchanted_book(enchantment_level, treasure, no_reduced_bonus_chance)
return mcl_enchanting.enchant_randomly(ItemStack("mcl_books:book"), enchantment_level, treasure, no_reduced_bonus_chance, true)
end
function mcl_enchanting.get_uniform_randomly_enchanted_book(except, pr)
except = except or except
local stack = ItemStack("mcl_enchanting:book_enchanted")
local list = {}
for enchantment in pairs(mcl_enchanting.enchantments) do
if table.indexof(except, enchantment) == -1 then
table.insert(list, enchantment)
end
end
local index, level
if pr then
index = pr:next(1,#list)
else
index = math.random(#list)
end
local enchantment = list[index]
local enchantment_def = mcl_enchanting.enchantments[enchantment]
if pr then
level = pr:next(1, enchantment_def.max_level)
else
level = math.random(enchantment_def.max_level)
end
mcl_enchanting.enchant(stack, enchantment, level)
return stack
end
function mcl_enchanting.get_random_glyph_row()
local glyphs = ""
local x = 1.3
for i = 1, 9 do
glyphs = glyphs .. "image[".. x .. ",0.1;0.5,0.5;mcl_enchanting_glyph_" .. math.random(18) .. ".png^[colorize:#675D49:255]"
x = x + 0.6
end
return glyphs
end
function mcl_enchanting.generate_random_table_slots(itemstack, num_bookshelves)
local base = math.random(8) + math.floor(num_bookshelves / 2) + math.random(0, num_bookshelves)
local required_levels = {
math.max(base / 3, 1),
(base * 2) / 3 + 1,
math.max(base, num_bookshelves * 2)
}
local slots = {}
for i, enchantment_level in ipairs(required_levels) do
local slot = false
local enchantments, description = mcl_enchanting.generate_random_enchantments(itemstack, enchantment_level)
if enchantments then
slot = {
enchantments = enchantments,
description = description,
glyphs = mcl_enchanting.get_random_glyph_row(),
level_requirement = math.max(i, math.floor(enchantment_level)),
}
end
slots[i] = slot
end
return slots
end
function mcl_enchanting.get_table_slots(player, itemstack, num_bookshelves)
if not mcl_enchanting.can_enchant_freshly(itemstack:get_name()) then
return {false, false, false}
end
local itemname = itemstack:get_name()
local meta = player:get_meta()
local player_slots = minetest.deserialize(meta:get_string("mcl_enchanting:slots")) or {}
local player_bookshelves_slots = player_slots[num_bookshelves] or {}
local player_bookshelves_item_slots = player_bookshelves_slots[itemname]
if player_bookshelves_item_slots then
return player_bookshelves_item_slots
else
player_bookshelves_item_slots = mcl_enchanting.generate_random_table_slots(itemstack, num_bookshelves)
if player_bookshelves_item_slots then
player_bookshelves_slots[itemname] = player_bookshelves_item_slots
player_slots[num_bookshelves] = player_bookshelves_slots
meta:set_string("mcl_enchanting:slots", minetest.serialize(player_slots))
return player_bookshelves_item_slots
else
return {false, false, false}
end
end
end
function mcl_enchanting.reset_table_slots(player)
player:get_meta():set_string("mcl_enchanting:slots", "")
end
function mcl_enchanting.show_enchanting_formspec(player)
local C = minetest.get_color_escape_sequence
local name = player:get_player_name()
local meta = player:get_meta()
local inv = player:get_inventory()
local num_bookshelves = meta:get_int("mcl_enchanting:num_bookshelves")
local table_name = meta:get_string("mcl_enchanting:table_name")
local formspec = ""
.. "size[9.07,8.6;]"
.. "formspec_version[3]"
.. "label[0,0;" .. C(mcl_colors.DARK_GRAY) .. F(table_name) .. "]"
.. mcl_formspec.get_itemslot_bg(0.2, 2.4, 1, 1)
.. "list[current_player;enchanting_item;0.2,2.4;1,1]"
.. mcl_formspec.get_itemslot_bg(1.1, 2.4, 1, 1)
.. "image[1.1,2.4;1,1;mcl_enchanting_lapis_background.png]"
.. "list[current_player;enchanting_lapis;1.1,2.4;1,1]"
.. "label[0,4;" .. C(mcl_colors.DARK_GRAY) .. F(S("Inventory")).."]"
.. mcl_formspec.get_itemslot_bg(0, 4.5, 9, 3)
.. mcl_formspec.get_itemslot_bg(0, 7.74, 9, 1)
.. "list[current_player;main;0,4.5;9,3;9]"
.. "listring[current_player;enchanting_item]"
.. "listring[current_player;main]"
.. "listring[current_player;enchanting]"
.. "listring[current_player;main]"
.. "listring[current_player;enchanting_lapis]"
.. "listring[current_player;main]"
.. "list[current_player;main;0,7.74;9,1;]"
.. "real_coordinates[true]"
.. "image[3.15,0.6;7.6,4.1;mcl_enchanting_button_background.png]"
local itemstack = inv:get_stack("enchanting_item", 1)
local player_levels = mcl_experience.get_player_xp_level(player)
local y = 0.65
local any_enchantment = false
local table_slots = mcl_enchanting.get_table_slots(player, itemstack, num_bookshelves)
for i, slot in ipairs(table_slots) do
any_enchantment = any_enchantment or slot
local enough_lapis = inv:contains_item("enchanting_lapis", ItemStack({name = "mcl_dye:blue", count = i}))
local enough_levels = slot and slot.level_requirement <= player_levels
local can_enchant = (slot and enough_lapis and enough_levels)
local ending = (can_enchant and "" or "_off")
local hover_ending = (can_enchant and "_hovered" or "_off")
formspec = formspec
.. "container[3.2," .. y .. "]"
.. (slot and "tooltip[button_" .. i .. ";" .. C(mcl_colors.GRAY) .. ((slot.description and F(slot.description)) or "") .. " " .. C(mcl_colors.WHITE) .. " . . . ?\n\n" .. (enough_levels and C(enough_lapis and mcl_colors.GRAY or mcl_colors.RED) .. F(S("@1 Lapis Lazuli", i)) .. "\n" .. C(mcl_colors.GRAY) .. F(S("@1 Enchantment Levels", i)) or C(mcl_colors.RED) .. F(S("Level requirement: @1", slot.level_requirement))) .. "]" or "")
.. "style[button_" .. i .. ";bgimg=mcl_enchanting_button" .. ending .. ".png;bgimg_hovered=mcl_enchanting_button" .. hover_ending .. ".png;bgimg_pressed=mcl_enchanting_button" .. hover_ending .. ".png]"
.. "button[0,0;7.5,1.3;button_" .. i .. ";]"
.. (slot and "image[0,0;1.3,1.3;mcl_enchanting_number_" .. i .. ending .. ".png]" or "")
.. (slot and "label[7.2,1.1;" .. C(can_enchant and mcl_colors.GREEN or mcl_colors.DARK_GREEN) .. slot.level_requirement .. "]" or "")
.. (slot and slot.glyphs or "")
.. "container_end[]"
y = y + 1.35
end
formspec = formspec
.. "image[" .. (any_enchantment and 0.58 or 1.15) .. ",1.2;" .. (any_enchantment and 2 or 0.87) .. ",1.43;mcl_enchanting_book_" .. (any_enchantment and "open" or "closed") .. ".png]"
minetest.show_formspec(name, "mcl_enchanting:table", formspec)
end
function mcl_enchanting.handle_formspec_fields(player, formname, fields)
if formname == "mcl_enchanting:table" then
local button_pressed
for i = 1, 3 do
if fields["button_" .. i] then
button_pressed = i
end
end
if not button_pressed then return end
local name = player:get_player_name()
local inv = player:get_inventory()
local meta = player:get_meta()
local num_bookshelfes = meta:get_int("mcl_enchanting:num_bookshelves")
local itemstack = inv:get_stack("enchanting_item", 1)
local cost = ItemStack({name = "mcl_dye:blue", count = button_pressed})
if not inv:contains_item("enchanting_lapis", cost) then
return
end
local slots = mcl_enchanting.get_table_slots(player, itemstack, num_bookshelfes)
local slot = slots[button_pressed]
if not slot then
return
end
local player_level = mcl_experience.get_player_xp_level(player)
if player_level < slot.level_requirement then
return
end
mcl_experience.set_player_xp_level(player, player_level - button_pressed)
inv:remove_item("enchanting_lapis", cost)
mcl_enchanting.set_enchanted_itemstring(itemstack)
mcl_enchanting.set_enchantments(itemstack, slot.enchantments)
inv:set_stack("enchanting_item", 1, itemstack)
minetest.sound_play("mcl_enchanting_enchant", {to_player = name, gain = 5.0})
mcl_enchanting.reset_table_slots(player)
mcl_enchanting.show_enchanting_formspec(player)
end
end
function mcl_enchanting.initialize_player(player)
local inv = player:get_inventory()
inv:set_size("enchanting", 1)
inv:set_size("enchanting_item", 1)
inv:set_size("enchanting_lapis", 1)
end
function mcl_enchanting.is_enchanting_inventory_action(action, inventory, inventory_info)
if inventory:get_location().type == "player" then
local enchanting_lists = mcl_enchanting.enchanting_lists
if action == "move" then
local is_from = table.indexof(enchanting_lists, inventory_info.from_list) ~= -1
local is_to = table.indexof(enchanting_lists, inventory_info.to_list) ~= -1
return is_from or is_to, is_to
elseif (action == "put" or action == "take") and table.indexof(enchanting_lists, inventory_info.listname) ~= -1 then
return true
end
else
return false
end
end
function mcl_enchanting.allow_inventory_action(player, action, inventory, inventory_info)
local is_enchanting_action, do_limit = mcl_enchanting.is_enchanting_inventory_action(action, inventory, inventory_info)
if is_enchanting_action and do_limit then
if action == "move" then
local listname = inventory_info.to_list
local stack = inventory:get_stack(inventory_info.from_list, inventory_info.from_index)
if stack:get_name() == "mcl_dye:blue" and listname ~= "enchanting_item" then
local count = stack:get_count()
local old_stack = inventory:get_stack("enchanting_lapis", 1)
if old_stack:get_name() ~= "" then
count = math.min(count, old_stack:get_free_space())
end
return count
elseif inventory:get_stack("enchanting_item", 1):get_count() == 0 and listname ~= "enchanting_lapis" then
return 1
else
return 0
end
else
return 0
end
end
end
function mcl_enchanting.on_inventory_action(player, action, inventory, inventory_info)
if mcl_enchanting.is_enchanting_inventory_action(action, inventory, inventory_info) then
if action == "move" and inventory_info.to_list == "enchanting" then
local stack = inventory:get_stack("enchanting", 1)
local result_list
if stack:get_name() == "mcl_dye:blue" then
result_list = "enchanting_lapis"
stack:add_item(inventory:get_stack("enchanting_lapis", 1))
else
result_list = "enchanting_item"
end
inventory:set_stack(result_list, 1, stack)
inventory:set_stack("enchanting", 1, nil)
end
mcl_enchanting.show_enchanting_formspec(player)
end
end
function mcl_enchanting.schedule_book_animation(self, anim)
self.scheduled_anim = {timer = self.anim_length, anim = anim}
end
function mcl_enchanting.set_book_animation(self, anim)
local anim_index = mcl_enchanting.book_animations[anim]
local start, stop = mcl_enchanting.book_animation_steps[anim_index], mcl_enchanting.book_animation_steps[anim_index + 1]
self.object:set_animation({x = start, y = stop}, mcl_enchanting.book_animation_speed, 0, mcl_enchanting.book_animation_loop[anim] or false)
self.scheduled_anim = nil
self.anim_length = (stop - start) / 40
end
function mcl_enchanting.check_animation_schedule(self, dtime)
local schedanim = self.scheduled_anim
if schedanim then
schedanim.timer = schedanim.timer - dtime
if schedanim.timer <= 0 then
mcl_enchanting.set_book_animation(self, schedanim.anim)
end
end
end
function mcl_enchanting.look_at(self, pos2)
local pos1 = self.object:get_pos()
local vec = vector.subtract(pos1, pos2)
local yaw = math.atan(vec.z / vec.x) - math.pi/2
yaw = yaw + (pos1.x >= pos2.x and math.pi or 0)
self.object:set_yaw(yaw + math.pi)
end
function mcl_enchanting.get_bookshelves(pos)
local absolute, relative = {}, {}
for i, rp in ipairs(mcl_enchanting.bookshelf_positions) do
local airp = vector.add(pos, mcl_enchanting.air_positions[i])
local ap = vector.add(pos, rp)
if minetest.get_node(ap).name == "mcl_books:bookshelf" and minetest.get_node(airp).name == "air" then
table.insert(absolute, ap)
table.insert(relative, rp)
end
end
return absolute, relative
end