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Mineclonia/mods/ENTITIES/mobs_mc/villager.lua

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--MCmobs v0.4
--maikerumine
--made for MC like Survival game
--License for code WTFPL and otherwise stated in readmes
--###################
--################### VILLAGER
--###################
-- Summary: Villagers are complex NPCs, their main feature allows players to trade with them.
-- TODO: Particles
-- TODO: 4s Regeneration I after trade unlock
-- TODO: Breeding
-- TODO: Baby villagers
-- TODO: Spawning in villages
-- TODO: Behaviour:
-- TODO: Walk around village, but do not leave it intentionally
-- TODO: Run into house on rain or danger, open doors
-- TODO: Internal inventory, pick up items, trade with other villagers
-- TODO: Farm stuff
local S = minetest.get_translator("mobs_mc")
local N = function(s) return s end
local F = minetest.formspec_escape
-- playername-indexed table containing the previously used tradenum
local player_tradenum = {}
-- playername-indexed table containing the objectref of trader, if trading formspec is open
local player_trading_with = {}
local DEFAULT_WALK_CHANCE = 33 -- chance to walk in percent, if no player nearby
local PLAYER_SCAN_INTERVAL = 5 -- every X seconds, villager looks for players nearby
local PLAYER_SCAN_RADIUS = 4 -- scan radius for looking for nearby players
--[=======[ TRADING ]=======]
-- LIST OF VILLAGER PROFESSIONS AND TRADES
-- TECHNICAL RESTRICTIONS (FIXME):
-- * You can't use a clock as requested item
-- * You can't use a compass as requested item if its stack size > 1
-- * You can't use a compass in the second requested slot
-- This is a problem in the mcl_compass and mcl_clock mods,
-- these items should be implemented as single items, then everything
-- will be much easier.
local COMPASS = "mcl_compass:compass"
if minetest.registered_aliases[COMPASS] then
COMPASS = minetest.registered_aliases[COMPASS]
end
local E1 = { "mcl_core:emerald", 1, 1 } -- one emerald
-- Special trades for v6 only
-- NOTE: These symbols MUST only be added at the end of a tier
local TRADE_V6_RED_SANDSTONE, TRADE_V6_DARK_OAK_SAPLING, TRADE_V6_ACACIA_SAPLING, TRADE_V6_BIRCH_SAPLING
if minetest.get_mapgen_setting("mg_name") == "v6" then
TRADE_V6_RED_SANDSTONE = { E1, { "mcl_core:redsandstone", 12, 16 } }
TRADE_V6_DARK_OAK_SAPLING = { { "mcl_core:emerald", 6, 9 }, { "mcl_core:darksapling", 1, 1 } }
TRADE_V6_ACACIA_SAPLING = { { "mcl_core:emerald", 14, 17 }, { "mcl_core:acaciasapling", 1, 1 } }
TRADE_V6_BIRCH_SAPLING = { { "mcl_core:emerald", 8, 11 }, { "mcl_core:birchsapling", 1, 1 } }
end
local professions = {
farmer = {
name = N("Farmer"),
texture = "mobs_mc_villager_farmer.png",
trades = {
{
{ { "mcl_farming:wheat_item", 18, 22, }, E1 },
{ { "mcl_farming:potato_item", 15, 19, }, E1 },
{ { "mcl_farming:carrot_item", 15, 19, }, E1 },
{ E1, { "mcl_farming:bread", 2, 4 } },
},
{
{ { "mcl_farming:pumpkin_face", 8, 13 }, E1 },
{ E1, { "mcl_farming:pumpkin_pie", 2, 3} },
},
{
{ { "mcl_farming:melon", 7, 12 }, E1 },
{ E1, { "mcl_core:apple", 5, 7 }, },
},
{
{ E1, { "mcl_farming:cookie", 6, 10 } },
{ E1, { "mcl_cake:cake", 1, 1 } },
TRADE_V6_BIRCH_SAPLING,
TRADE_V6_DARK_OAK_SAPLING,
TRADE_V6_ACACIA_SAPLING,
},
}
},
fisherman = {
name = N("Fisherman"),
texture = "mobs_mc_villager_farmer.png",
trades = {
{
{ { "mcl_fishing:fish_raw", 6, 6, "mcl_core:emerald", 1, 1 }, { "mcl_fishing:fish_cooked", 6, 6 } },
{ { "mcl_mobitems:string", 15, 20 }, E1 },
{ { "mcl_core:emerald", 3, 11 }, { "mcl_fishing:fishing_rod_enchanted", 1, 1} },
},
},
},
fletcher = {
name = N("Fletcher"),
texture = "mobs_mc_villager_farmer.png",
trades = {
{
{ { "mcl_mobitems:string", 15, 20 }, E1 },
{ E1, { "mcl_bows:arrow", 8, 12 } },
},
{
{ { "mcl_core:gravel", 10, 10, "mcl_core:emerald", 1, 1 }, { "mcl_core:flint", 6, 10 } },
{ { "mcl_core:emerald", 2, 3 }, { "mcl_bows:bow", 1, 1 } },
},
}
},
shepherd ={
name = N("Shepherd"),
texture = "mobs_mc_villager_farmer.png",
trades = {
{
{ { "mcl_wool:white", 16, 22 }, E1 },
{ { "mcl_core:emerald", 3, 4 }, { "mcl_tools:shears", 1, 1 } },
},
{
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:white", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:grey", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:silver", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:black", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:yellow", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:orange", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:red", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:magenta", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:purple", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:blue", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:cyan", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:lime", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:green", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:pink", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:light_blue", 1, 1 } },
{ { "mcl_core:emerald", 1, 2 }, { "mcl_wool:brown", 1, 1 } },
},
},
},
librarian = {
name = N("Librarian"),
texture = "mobs_mc_villager_librarian.png",
trades = {
{
{ { "mcl_core:paper", 24, 36 }, E1 },
{ { "mcl_books:book", 8, 10 }, E1 },
{ { "mcl_core:emerald", 10, 12 }, { "mcl_compass:compass", 1 ,1 }},
{ { "mcl_core:emerald", 3, 4 }, { "mcl_books:bookshelf", 1 ,1 }},
{ { "mcl_core:emerald", 5, 64 }, { "mcl_enchanting:book_enchanted", 1 ,1 }},
},
{
{ { "mcl_books:written_book", 2, 2 }, E1 },
{ { "mcl_core:emerald", 10, 12 }, { "mcl_clock:clock", 1, 1 } },
{ E1, { "mcl_core:glass", 3, 5 } },
{ { "mcl_core:emerald", 5, 64 }, { "mcl_enchanting:book_enchanted", 1 ,1 }},
},
{
{ E1, { "mcl_core:glass", 3, 5 } },
{ { "mcl_core:emerald", 5, 64 }, { "mcl_enchanting:book_enchanted", 1 ,1 }},
},
{
{ { "mcl_core:emerald", 5, 64 }, { "mcl_enchanting:book_enchanted", 1 ,1 }},
},
{
{ { "mcl_core:emerald", 20, 22 }, { "mcl_mobs:nametag", 1, 1 } },
}
},
},
cartographer = {
name = N("Cartographer"),
texture = "mobs_mc_villager_librarian.png",
trades = {
{
{ { "mcl_core:paper", 24, 36 }, E1 },
},
{
-- subject to special checks
{ { "mcl_compass:compass", 1, 1 }, E1 },
},
{
-- TODO: replace with empty map
{ { "mcl_core:emerald", 7, 11}, { "mcl_maps:filled_map", 1, 1 } },
},
-- TODO: special maps
},
},
armorer = {
name = N("Armorer"),
texture = "mobs_mc_villager_smith.png",
trades = {
{
{ { "mcl_core:coal_lump", 16, 24 }, E1 },
{ { "mcl_core:emerald", 4, 6 }, { "mcl_armor:helmet_iron", 1, 1 } },
},
{
{ { "mcl_core:iron_ingot", 7, 9 }, E1 },
{ { "mcl_core:emerald", 10, 14 }, { "mcl_armor:chestplate_iron", 1, 1 } },
},
{
{ { "mcl_core:diamond", 3, 4 }, E1 },
{ { "mcl_core:emerald", 16, 19 }, { "mcl_armor:chestplate_diamond_enchanted", 1, 1 } },
},
{
{ { "mcl_core:emerald", 5, 7 }, { "mcl_armor:boots_chain", 1, 1 } },
{ { "mcl_core:emerald", 9, 11 }, { "mcl_armor:leggings_chain", 1, 1 } },
{ { "mcl_core:emerald", 5, 7 }, { "mcl_armor:helmet_chain", 1, 1 } },
{ { "mcl_core:emerald", 11, 15 }, { "mcl_armor:chestplate_chain", 1, 1 } },
},
},
},
leatherworker = {
name = N("Leatherworker"),
texture = "mobs_mc_villager_butcher.png",
trades = {
{
{ { "mcl_mobitems:leather", 9, 12 }, E1 },
{ { "mcl_core:emerald", 2, 4 }, { "mcl_armor:leggings_leather", 2, 4 } },
},
{
{ { "mcl_core:emerald", 7, 12 }, { "mcl_armor:chestplate_leather_enchanted", 1, 1 } },
},
{
{ { "mcl_core:emerald", 8, 10 }, { "mcl_mobitems:saddle", 1, 1 } },
},
},
},
butcher = {
name = N("Butcher"),
texture = "mobs_mc_villager_butcher.png",
trades = {
{
{ { "mcl_mobitems:beef", 14, 18 }, E1 },
{ { "mcl_mobitems:chicken", 14, 18 }, E1 },
},
{
{ { "mcl_core:coal_lump", 16, 24 }, E1 },
{ E1, { "mcl_mobitems:cooked_beef", 5, 7 } },
{ E1, { "mcl_mobitems:cooked_chicken", 6, 8 } },
},
},
},
weapon_smith = {
name = N("Weapon Smith"),
texture = "mobs_mc_villager_smith.png",
trades = {
{
{ { "mcl_core:coal_lump", 16, 24 }, E1 },
{ { "mcl_core:emerald", 6, 8 }, { "mcl_tools:axe_iron", 1, 1 } },
},
{
{ { "mcl_core:iron_ingot", 7, 9 }, E1 },
{ { "mcl_core:emerald", 9, 10 }, { "mcl_tools:sword_iron_enchanted", 1, 1 } },
},
{
{ { "mcl_core:diamond", 3, 4 }, E1 },
{ { "mcl_core:emerald", 12, 15 }, { "mcl_tools:sword_diamond_enchanted", 1, 1 } },
{ { "mcl_core:emerald", 9, 12 }, { "mcl_tools:axe_diamond_enchanted", 1, 1 } },
},
},
},
tool_smith = {
name = N("Tool Smith"),
texture = "mobs_mc_villager_smith.png",
trades = {
{
{ { "mcl_core:coal_lump", 16, 24 }, E1 },
{ { "mcl_core:emerald", 5, 7 }, { "mcl_tools:shovel_iron_enchanted", 1, 1 } },
},
{
{ { "mcl_core:iron_ingot", 7, 9 }, E1 },
{ { "mcl_core:emerald", 9, 11 }, { "mcl_tools:pick_iron_enchanted", 1, 1 } },
},
{
{ { "mcl_core:diamond", 3, 4 }, E1 },
{ { "mcl_core:emerald", 12, 15 }, { "mcl_tools:pick_diamond_enchanted", 1, 1 } },
},
},
},
cleric = {
name = N("Cleric"),
texture = "mobs_mc_villager_priest.png",
trades = {
{
{ { "mcl_mobitems:rotten_flesh", 36, 40 }, E1 },
{ { "mcl_core:gold_ingot", 8, 10 }, E1 },
},
{
{ E1, { "mesecons:redstone", 1, 4 } },
{ E1, { "mcl_dye:blue", 1, 2 } },
},
{
{ E1, { "mcl_nether:glowstone", 1, 3 } },
{ { "mcl_core:emerald", 4, 7 }, { "mcl_throwing:ender_pearl", 1, 1 } },
TRADE_V6_RED_SANDSTONE,
},
{
{ { "mcl_nether:nether_wart_item", 22, 22 }, E1 },
{ { "mcl_core:emerald", 3, 3 }, { "mcl_experience:bottle", 1, 1 } },
},
},
},
nitwit = {
name = N("Nitwit"),
texture = "mobs_mc_villager.png",
-- No trades for nitwit
trades = nil,
}
}
local profession_names = {}
for id, _ in pairs(professions) do
table.insert(profession_names, id)
end
local stand_still = function(self)
self.walk_chance = 0
self.jump = false
end
local update_max_tradenum = function(self)
if not self._trades then
return
end
local trades = minetest.deserialize(self._trades)
for t=1, #trades do
local trade = trades[t]
if trade.tier > self._max_trade_tier then
self._max_tradenum = t - 1
return
end
end
self._max_tradenum = #trades
end
local init_trader_vars = function(self)
if not self._profession then
-- Select random profession from all professions with matching clothing
local texture = self.base_texture[1]
local matches = {}
for prof_id, prof in pairs(professions) do
if texture == prof.texture then
table.insert(matches, prof_id)
end
end
local p = math.random(1, #matches)
self._profession = matches[p]
end
if not self._max_trade_tier then
self._max_trade_tier = 1
end
if not self._locked_trades then
self._locked_trades = 0
end
if not self._trading_players then
self._trading_players = {}
end
end
local init_trades = function(self, inv)
local profession = professions[self._profession]
local trade_tiers = profession.trades
if trade_tiers == nil then
-- Empty trades
self._trades = false
return
end
local max_tier = #trade_tiers
local trades = {}
for tiernum=1, max_tier do
local tier = trade_tiers[tiernum]
for tradenum=1, #tier do
local trade = tier[tradenum]
local wanted1_item = trade[1][1]
local wanted1_count = math.random(trade[1][2], trade[1][3])
local offered_item = trade[2][1]
local offered_count = math.random(trade[2][2], trade[2][3])
local offered_stack = ItemStack({name = offered_item, count = offered_count})
if mcl_enchanting.is_enchanted(offered_item) then
if mcl_enchanting.is_book(offered_item) then
offered_stack = mcl_enchanting.get_uniform_randomly_enchanted_book({"soul_speed"})
else
mcl_enchanting.enchant_randomly(offered_stack, math.random(5, 19), false, false, true)
end
end
local wanted = { wanted1_item .. " " ..wanted1_count }
if trade[1][4] then
local wanted2_item = trade[1][4]
local wanted2_count = math.random(trade[1][5], trade[1][6])
table.insert(wanted, wanted2_item .. " " ..wanted2_count)
end
table.insert(trades, {
wanted = wanted,
offered = offered_stack:to_table(),
tier = tiernum, -- tier of this trade
traded_once = false, -- true if trade was traded at least once
trade_counter = 0, -- how often the this trade was mate after the last time it got unlocked
locked = false, -- if this trade is locked. Locked trades can't be used
})
end
end
self._trades = minetest.serialize(trades)
minetest.deserialize(self._trades)
end
local set_trade = function(trader, player, inv, concrete_tradenum)
local trades = minetest.deserialize(trader._trades)
if not trades then
init_trades(trader)
trades = minetest.deserialize(trader._trades)
if not trades then
minetest.log("error", "[mobs_mc] Failed to select villager trade!")
return
end
end
local name = player:get_player_name()
-- Stop tradenum from advancing into locked tiers or out-of-range areas
if concrete_tradenum > trader._max_tradenum then
concrete_tradenum = trader._max_tradenum
elseif concrete_tradenum < 1 then
concrete_tradenum = 1
end
player_tradenum[name] = concrete_tradenum
local trade = trades[concrete_tradenum]
inv:set_stack("wanted", 1, ItemStack(trade.wanted[1]))
inv:set_stack("offered", 1, ItemStack(trade.offered))
if trade.wanted[2] then
local wanted2 = ItemStack(trade.wanted[2])
inv:set_stack("wanted", 2, wanted2)
else
inv:set_stack("wanted", 2, "")
end
end
local function show_trade_formspec(playername, trader, tradenum)
if not trader._trades then
return
end
if not tradenum then
tradenum = 1
end
local trades = minetest.deserialize(trader._trades)
local trade = trades[tradenum]
local profession = professions[trader._profession].name
local disabled_img = ""
if trade.locked then
disabled_img = "image[4.3,2.52;1,1;mobs_mc_trading_formspec_disabled.png]"..
"image[4.3,1.1;1,1;mobs_mc_trading_formspec_disabled.png]"
end
local tradeinv_name = "mobs_mc:trade_"..playername
local tradeinv = F("detached:"..tradeinv_name)
local b_prev, b_next = "", ""
if #trades > 1 then
if tradenum > 1 then
b_prev = "button[1,1;0.5,1;prev_trade;<]"
end
if tradenum < trader._max_tradenum then
b_next = "button[7.26,1;0.5,1;next_trade;>]"
end
end
local inv = minetest.get_inventory({type="detached", name="mobs_mc:trade_"..playername})
if not inv then
return
end
local wanted1 = inv:get_stack("wanted", 1)
local wanted2 = inv:get_stack("wanted", 2)
local offered = inv:get_stack("offered", 1)
local w2_formspec = ""
if not wanted2:is_empty() then
w2_formspec = "item_image[3,1;1,1;"..wanted2:to_string().."]"
.."tooltip[3,1;0.8,0.8;"..F(wanted2:get_description()).."]"
end
local formspec =
"size[9,8.75]"
.."background[-0.19,-0.25;9.41,9.49;mobs_mc_trading_formspec_bg.png]"
..disabled_img
.."label[4,0;"..F(minetest.colorize("#313131", S(profession))).."]"
.."list[current_player;main;0,4.5;9,3;9]"
.."list[current_player;main;0,7.74;9,1;]"
..b_prev..b_next
.."["..tradeinv..";wanted;2,1;2,1;]"
.."item_image[2,1;1,1;"..wanted1:to_string().."]"
.."tooltip[2,1;0.8,0.8;"..F(wanted1:get_description()).."]"
..w2_formspec
.."item_image[5.76,1;1,1;"..offered:get_name().." "..offered:get_count().."]"
.."tooltip[5.76,1;0.8,0.8;"..F(offered:get_description()).."]"
.."list["..tradeinv..";input;2,2.5;2,1;]"
.."list["..tradeinv..";output;5.76,2.55;1,1;]"
.."listring["..tradeinv..";output]"
.."listring[current_player;main]"
.."listring["..tradeinv..";input]"
.."listring[current_player;main]"
minetest.sound_play("mobs_mc_villager_trade", {to_player = playername}, true)
minetest.show_formspec(playername, tradeinv_name, formspec)
end
local update_offer = function(inv, player, sound)
local name = player:get_player_name()
local trader = player_trading_with[name]
local tradenum = player_tradenum[name]
if not trader or not tradenum then
return false
end
local trades = minetest.deserialize(trader._trades)
if not trades then
return false
end
local trade = trades[tradenum]
if not trade then
return false
end
local wanted1, wanted2 = inv:get_stack("wanted", 1), inv:get_stack("wanted", 2)
local input1, input2 = inv:get_stack("input", 1), inv:get_stack("input", 2)
-- BEGIN OF SPECIAL HANDLING OF COMPASS
-- These 2 functions are a complicated check to check if the input contains a
-- special item which we cannot check directly against their name, like
-- compass.
-- TODO: Remove these check functions when compass and clock are implemented
-- as single items.
local check_special = function(special_item, group, wanted1, wanted2, input1, input2)
if minetest.registered_aliases[special_item] then
special_item = minetest.registered_aliases[special_item]
end
if wanted1:get_name() == special_item then
local check_input = function(input, wanted, group)
return minetest.get_item_group(input:get_name(), group) ~= 0 and input:get_count() >= wanted:get_count()
end
if check_input(input1, wanted1, group) then
return true
elseif check_input(input2, wanted1, group) then
return true
else
return false
end
end
return false
end
-- Apply above function to all items which we consider special.
-- This function succeeds if ANY item check succeeds.
local check_specials = function(wanted1, wanted2, input1, input2)
return check_special(COMPASS, "compass", wanted1, wanted2, input1, input2)
end
-- END OF SPECIAL HANDLING OF COMPASS
if (
((inv:contains_item("input", wanted1) and
(wanted2:is_empty() or inv:contains_item("input", wanted2))) or
-- BEGIN OF SPECIAL HANDLING OF COMPASS
check_specials(wanted1, wanted2, input1, input2)) and
-- END OF SPECIAL HANDLING OF COMPASS
(trade.locked == false)) then
inv:set_stack("output", 1, inv:get_stack("offered", 1))
if sound then
minetest.sound_play("mobs_mc_villager_accept", {to_player = name}, true)
end
return true
else
inv:set_stack("output", 1, ItemStack(""))
if sound then
minetest.sound_play("mobs_mc_villager_deny", {to_player = name}, true)
end
return false
end
end
-- Returns a single itemstack in the given inventory to the player's main inventory, or drop it when there's no space left
local function return_item(itemstack, dropper, pos, inv_p)
if dropper:is_player() then
-- Return to main inventory
if inv_p:room_for_item("main", itemstack) then
inv_p:add_item("main", itemstack)
else
-- Drop item on the ground
local v = dropper:get_look_dir()
local p = {x=pos.x, y=pos.y+1.2, z=pos.z}
p.x = p.x+(math.random(1,3)*0.2)
p.z = p.z+(math.random(1,3)*0.2)
local obj = minetest.add_item(p, itemstack)
if obj then
v.x = v.x*4
v.y = v.y*4 + 2
v.z = v.z*4
obj:set_velocity(v)
obj:get_luaentity()._insta_collect = false
end
end
else
-- Fallback for unexpected cases
minetest.add_item(pos, itemstack)
end
return itemstack
end
local return_fields = function(player)
local name = player:get_player_name()
local inv_t = minetest.get_inventory({type="detached", name = "mobs_mc:trade_"..name})
local inv_p = player:get_inventory()
if not inv_t or not inv_p then
return
end
for i=1, inv_t:get_size("input") do
local stack = inv_t:get_stack("input", i)
return_item(stack, player, player:get_pos(), inv_p)
stack:clear()
inv_t:set_stack("input", i, stack)
end
inv_t:set_stack("output", 1, "")
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if string.sub(formname, 1, 14) == "mobs_mc:trade_" then
local name = player:get_player_name()
if fields.quit then
-- Get input items back
return_fields(player)
-- Reset internal "trading with" state
local trader = player_trading_with[name]
if trader then
trader._trading_players[name] = nil
end
player_trading_with[name] = nil
elseif fields.next_trade or fields.prev_trade then
local trader = player_trading_with[name]
if not trader or not trader.object:get_luaentity() then
return
end
local trades = trader._trades
if not trades then
return
end
local dir = 1
if fields.prev_trade then
dir = -1
end
local tradenum = player_tradenum[name] + dir
local inv = minetest.get_inventory({type="detached", name="mobs_mc:trade_"..name})
if not inv then
return
end
set_trade(trader, player, inv, tradenum)
update_offer(inv, player, false)
show_trade_formspec(name, trader, player_tradenum[name])
end
end
end)
minetest.register_on_leaveplayer(function(player)
local name = player:get_player_name()
return_fields(player)
player_tradenum[name] = nil
local trader = player_trading_with[name]
if trader then
trader._trading_players[name] = nil
end
player_trading_with[name] = nil
end)
-- Return true if player is trading with villager, and the villager entity exists
local trader_exists = function(playername)
local trader = player_trading_with[playername]
return trader ~= nil and trader.object:get_luaentity() ~= nil
end
local trade_inventory = {
allow_take = function(inv, listname, index, stack, player)
if listname == "input" then
return stack:get_count()
elseif listname == "output" then
if not trader_exists(player:get_player_name()) then
return 0
end
-- Only allow taking full stack
local count = stack:get_count()
if count == inv:get_stack(listname, index):get_count() then
-- Also update output stack again.
-- If input has double the wanted items, the
-- output will stay because there will be still
-- enough items in input after the trade
local wanted1 = inv:get_stack("wanted", 1)
local wanted2 = inv:get_stack("wanted", 2)
local input1 = inv:get_stack("input", 1)
local input2 = inv:get_stack("input", 2)
wanted1:set_count(wanted1:get_count()*2)
wanted2:set_count(wanted2:get_count()*2)
-- BEGIN OF SPECIAL HANDLING FOR COMPASS
local special_checks = function(wanted1, input1, input2)
if wanted1:get_name() == COMPASS then
local compasses = 0
if (minetest.get_item_group(input1:get_name(), "compass") ~= 0) then
compasses = compasses + input1:get_count()
end
if (minetest.get_item_group(input2:get_name(), "compass") ~= 0) then
compasses = compasses + input2:get_count()
end
return compasses >= wanted1:get_count()
end
return false
end
-- END OF SPECIAL HANDLING FOR COMPASS
if (inv:contains_item("input", wanted1) and
(wanted2:is_empty() or inv:contains_item("input", wanted2)))
-- BEGIN OF SPECIAL HANDLING FOR COMPASS
or special_checks(wanted1, input1, input2) then
-- END OF SPECIAL HANDLING FOR COMPASS
return -1
else
-- If less than double the wanted items,
-- remove items from output (final trade,
-- input runs empty)
return count
end
else
return 0
end
else
return 0
end
end,
allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
if from_list == "input" and to_list == "input" then
return count
elseif from_list == "output" and to_list == "input" then
if not trader_exists(player:get_player_name()) then
return 0
end
local move_stack = inv:get_stack(from_list, from_index)
if inv:get_stack(to_list, to_index):item_fits(move_stack) then
return count
end
end
return 0
end,
allow_put = function(inv, listname, index, stack, player)
if listname == "input" then
if not trader_exists(player:get_player_name()) then
return 0
else
return stack:get_count()
end
else
return 0
end
end,
on_put = function(inv, listname, index, stack, player)
update_offer(inv, player, true)
end,
on_move = function(inv, from_list, from_index, to_list, to_index, count, player)
if from_list == "output" and to_list == "input" then
inv:remove_item("input", inv:get_stack("wanted", 1))
local wanted2 = inv:get_stack("wanted", 2)
if not wanted2:is_empty() then
inv:remove_item("input", inv:get_stack("wanted", 2))
end
minetest.sound_play("mobs_mc_villager_accept", {to_player = player:get_player_name()}, true)
end
update_offer(inv, player, true)
end,
on_take = function(inv, listname, index, stack, player)
local accept
local name = player:get_player_name()
if listname == "output" then
local wanted1 = inv:get_stack("wanted", 1)
inv:remove_item("input", wanted1)
local wanted2 = inv:get_stack("wanted", 2)
if not wanted2:is_empty() then
inv:remove_item("input", inv:get_stack("wanted", 2))
end
-- BEGIN OF SPECIAL HANDLING FOR COMPASS
if wanted1:get_name() == COMPASS then
for n=1, 2 do
local input = inv:get_stack("input", n)
if minetest.get_item_group(input:get_name(), "compass") ~= 0 then
input:set_count(input:get_count() - wanted1:get_count())
inv:set_stack("input", n, input)
break
end
end
end
-- END OF SPECIAL HANDLING FOR COMPASS
local trader = player_trading_with[name]
local tradenum = player_tradenum[name]
local trades
if trader and trader._trades then
trades = minetest.deserialize(trader._trades)
end
if trades then
local trade = trades[tradenum]
local unlock_stuff = false
if not trade.traded_once then
-- Unlock all the things if something was traded
-- for the first time ever
unlock_stuff = true
trade.traded_once = true
elseif trade.trade_counter == 0 and math.random(1,5) == 1 then
-- Otherwise, 20% chance to unlock if used freshly reset trade
unlock_stuff = true
end
local update_formspec = false
if unlock_stuff then
-- First-time trade unlock all trades and unlock next trade tier
if trade.tier + 1 > trader._max_trade_tier then
trader._max_trade_tier = trader._max_trade_tier + 1
update_max_tradenum(trader)
update_formspec = true
end
for t=1, #trades do
trades[t].locked = false
trades[t].trade_counter = 0
end
trader._locked_trades = 0
-- Also heal trader for unlocking stuff
-- TODO: Replace by Regeneration I
trader.health = math.min(trader.hp_max, trader.health + 4)
end
trade.trade_counter = trade.trade_counter + 1
-- Semi-randomly lock trade for repeated trade (not if there's only 1 trade)
if trader._max_tradenum > 1 then
if trade.trade_counter >= 12 then
trade.locked = true
elseif trade.trade_counter >= 2 then
local r = math.random(1, math.random(4, 10))
if r == 1 then
trade.locked = true
end
end
end
if trade.locked then
inv:set_stack("output", 1, "")
update_formspec = true
trader._locked_trades = trader._locked_trades + 1
-- Check if we managed to lock ALL available trades. Rare but possible.
if trader._locked_trades >= trader._max_tradenum then
-- Emergency unlock! Unlock all other trades except the current one
for t=1, #trades do
if t ~= tradenum then
trades[t].locked = false
trades[t].trade_counter = 0
end
end
trader._locked_trades = 1
-- Also heal trader for unlocking stuff
-- TODO: Replace by Regeneration I
trader.health = math.min(trader.hp_max, trader.health + 4)
end
end
trader._trades = minetest.serialize(trades)
if update_formspec then
show_trade_formspec(name, trader, tradenum)
end
else
minetest.log("error", "[mobs_mc] Player took item from trader output but player_trading_with or player_tradenum is nil!")
end
accept = true
elseif listname == "input" then
update_offer(inv, player, false)
end
if accept then
minetest.sound_play("mobs_mc_villager_accept", {to_player = name}, true)
else
minetest.sound_play("mobs_mc_villager_deny", {to_player = name}, true)
end
end,
}
minetest.register_on_joinplayer(function(player)
local name = player:get_player_name()
player_tradenum[name] = 1
player_trading_with[name] = nil
-- Create or get player-specific trading inventory
local inv = minetest.get_inventory({type="detached", name="mobs_mc:trade_"..name})
if not inv then
inv = minetest.create_detached_inventory("mobs_mc:trade_"..name, trade_inventory, name)
end
inv:set_size("input", 2)
inv:set_size("output", 1)
inv:set_size("wanted", 2)
inv:set_size("offered", 1)
end)
--[=======[ MOB REGISTRATION AND SPAWNING ]=======]
mobs:register_mob("mobs_mc:villager", {
type = "npc",
spawn_class = "passive",
hp_min = 20,
hp_max = 20,
collisionbox = {-0.3, -0.01, -0.3, 0.3, 1.94, 0.3},
visual = "mesh",
mesh = "mobs_mc_villager.b3d",
textures = {
{
"mobs_mc_villager.png",
"mobs_mc_villager.png", --hat
},
{
"mobs_mc_villager_farmer.png",
"mobs_mc_villager_farmer.png", --hat
},
{
"mobs_mc_villager_priest.png",
"mobs_mc_villager_priest.png", --hat
},
{
"mobs_mc_villager_librarian.png",
"mobs_mc_villager_librarian.png", --hat
},
{
"mobs_mc_villager_butcher.png",
"mobs_mc_villager_butcher.png", --hat
},
{
"mobs_mc_villager_smith.png",
"mobs_mc_villager_smith.png", --hat
},
},
visual_size = {x=3, y=3},
makes_footstep_sound = true,
walk_velocity = 1.2,
run_velocity = 2.4,
drops = {},
can_despawn = false,
-- TODO: sounds
animation = {
stand_speed = 25,
stand_start = 40,
stand_end = 59,
walk_speed = 25,
walk_start = 0,
walk_end = 40,
run_speed = 25,
run_start = 0,
run_end = 40,
die_speed = 15,
die_start = 210,
die_end = 220,
die_loop = false,
},
view_range = 16,
fear_height = 4,
jump = true,
walk_chance = DEFAULT_WALK_CHANCE,
on_rightclick = function(self, clicker)
-- Initiate trading
local name = clicker:get_player_name()
self._trading_players[name] = true
init_trader_vars(self)
if self._trades == nil then
init_trades(self)
end
update_max_tradenum(self)
if self._trades == false then
-- Villager has no trades, rightclick is a no-op
return
end
player_trading_with[name] = self
local inv = minetest.get_inventory({type="detached", name="mobs_mc:trade_"..name})
if not inv then
return
end
set_trade(self, clicker, inv, 1)
show_trade_formspec(name, self)
-- Behaviour stuff:
-- Make villager look at player and stand still
local selfpos = self.object:get_pos()
local clickerpos = clicker:get_pos()
local dir = vector.direction(selfpos, clickerpos)
self.object:set_yaw(minetest.dir_to_yaw(dir))
stand_still(self)
end,
_player_scan_timer = 0,
_trading_players = {}, -- list of playernames currently trading with villager (open formspec)
do_custom = function(self, dtime)
-- Stand still if player is nearby.
if not self._player_scan_timer then
self._player_scan_timer = 0
end
self._player_scan_timer = self._player_scan_timer + dtime
-- Check infrequently to keep CPU load low
if self._player_scan_timer > PLAYER_SCAN_INTERVAL then
self._player_scan_timer = 0
local selfpos = self.object:get_pos()
local objects = minetest.get_objects_inside_radius(selfpos, PLAYER_SCAN_RADIUS)
local has_player = false
for o, obj in pairs(objects) do
if obj:is_player() then
has_player = true
break
end
end
if has_player then
minetest.log("verbose", "[mobs_mc] Player near villager found!")
stand_still(self)
else
minetest.log("verbose", "[mobs_mc] No player near villager found!")
self.walk_chance = DEFAULT_WALK_CHANCE
self.jump = true
end
end
end,
on_spawn = function(self)
init_trader_vars(self)
end,
on_die = function(self, pos)
-- Close open trade formspecs and give input back to players
local trading_players = self._trading_players
for name, _ in pairs(trading_players) do
minetest.close_formspec(name, "mobs_mc:trade_"..name)
local player = minetest.get_player_by_name(name)
if player then
return_fields(player)
end
end
end,
})
mobs:spawn_specific("mobs_mc:villager", mobs_mc.spawn.village, {"air"}, 0, minetest.LIGHT_MAX+1, 30, 20, 4, mobs_mc.spawn_height.water+1, mobs_mc.spawn_height.overworld_max)
-- spawn eggs
mobs:register_egg("mobs_mc:villager", S("Villager"), "mobs_mc_spawn_icon_villager.png", 0)
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