moreblocks/circular_saw.lua
Auke Kok 2c63648f42 Prevent input stack_max from overflowing
Adds a check to see if recycle stack wouldn't overflow the input stack. If so, then
the items are just put in the recycle slot and they can be taken out again.
2016-02-13 22:20:12 -08:00

419 lines
13 KiB
Lua

--[[
More Blocks: circular saw
Copyright (c) 2011-2015 Calinou and contributors.
Licensed under the zlib license. See LICENSE.md for more information.
--]]
local S = moreblocks.intllib
circular_saw = {}
circular_saw.known_stairs = setmetatable({}, {
__newindex = function(k, v)
local modname = minetest.get_current_modname()
print(("WARNING: mod %s tried to add node %s to the circular saw"
.. " manually."):format(modname, v))
end,
})
-- This is populated by stairsplus:register_all:
circular_saw.known_nodes = {}
-- How many microblocks does this shape at the output inventory cost:
-- It may cause slight loss, but no gain.
circular_saw.cost_in_microblocks = {
1, 1, 1, 1, 1, 1, 1, 2,
2, 3, 2, 4, 2, 4, 5, 6,
7, 1, 1, 2, 4, 6, 7, 8,
3, 1, 1, 2, 4, 4, 2, 6,
7, 3, 7, 7, 4, 8, 3, 2,
6, 2, 1, 3, 4,
}
circular_saw.names = {
{"micro", "_1"},
{"panel", "_1"},
{"micro", "_2"},
{"panel", "_2"},
{"micro", "_4"},
{"panel", "_4"},
{"micro", ""},
{"panel", ""},
{"micro", "_12"},
{"panel", "_12"},
{"micro", "_14"},
{"panel", "_14"},
{"micro", "_15"},
{"panel", "_15"},
{"stair", "_outer"},
{"stair", ""},
{"stair", "_inner"},
{"slab", "_1"},
{"slab", "_2"},
{"slab", "_quarter"},
{"slab", ""},
{"slab", "_three_quarter"},
{"slab", "_14"},
{"slab", "_15"},
{"stair", "_half"},
{"stair", "_alt_1"},
{"stair", "_alt_2"},
{"stair", "_alt_4"},
{"stair", "_alt"},
{"slope", ""},
{"slope", "_half"},
{"slope", "_half_raised"},
{"slope", "_inner"},
{"slope", "_inner_half"},
{"slope", "_inner_half_raised"},
{"slope", "_inner_cut"},
{"slope", "_inner_cut_half"},
{"slope", "_inner_cut_half_raised"},
{"slope", "_outer"},
{"slope", "_outer_half"},
{"slope", "_outer_half_raised"},
{"slope", "_outer_cut"},
{"slope", "_outer_cut_half"},
{"slope", "_outer_cut_half_raised"},
{"slope", "_cut"},
}
function circular_saw:get_cost(inv, stackname)
for i, item in pairs(inv:get_list("output")) do
if item:get_name() == stackname then
return circular_saw.cost_in_microblocks[i]
end
end
end
function circular_saw:get_output_inv(modname, material, amount, max)
if (not max or max < 1 or max > 99) then max = 99 end
local list = {}
local pos = #list
-- If there is nothing inside, display empty inventory:
if amount < 1 then
return list
end
for i = 1, #circular_saw.names do
local t = circular_saw.names[i]
local cost = circular_saw.cost_in_microblocks[i]
local balance = math.min(math.floor(amount/cost), max)
local nodename = modname .. ":" .. t[1] .. "_" .. material .. t[2]
if minetest.registered_nodes[nodename] then
pos = pos + 1
list[pos] = nodename .. " " .. balance
end
end
return list
end
-- Reset empty circular_saw after last full block has been taken out
-- (or the circular_saw has been placed the first time)
-- Note: max_offered is not reset:
function circular_saw:reset(pos)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
inv:set_list("input", {})
inv:set_list("micro", {})
inv:set_list("output", {})
meta:set_int("anz", 0)
meta:set_string("infotext",
S("Circular Saw is empty (owned by %s)")
:format(meta:get_string("owner") or ""))
end
-- Player has taken something out of the box or placed something inside
-- that amounts to count microblocks:
function circular_saw:update_inventory(pos, amount)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
amount = meta:get_int("anz") + amount
-- The material is recycled automaticly.
inv:set_list("recycle", {})
if amount < 1 then -- If the last block is taken out.
self:reset(pos)
return
end
local stack = inv:get_stack("input", 1)
-- At least one "normal" block is necessary to see what kind of stairs are requested.
if stack:is_empty() then
-- Any microblocks not taken out yet are now lost.
-- (covers material loss in the machine)
self:reset(pos)
return
end
local node_name = stack:get_name() or ""
local name_parts = circular_saw.known_nodes[node_name] or ""
local modname = name_parts[1] or ""
local material = name_parts[2] or ""
inv:set_list("input", { -- Display as many full blocks as possible:
node_name.. " " .. math.floor(amount / 8)
})
-- The stairnodes made of default nodes use moreblocks namespace, other mods keep own:
if modname == "default" then
modname = "moreblocks"
end
-- print("circular_saw set to " .. modname .. " : "
-- .. material .. " with " .. (amount) .. " microblocks.")
-- 0-7 microblocks may remain left-over:
inv:set_list("micro", {
modname .. ":micro_" .. material .. "_bottom " .. (amount % 8)
})
-- Display:
inv:set_list("output",
self:get_output_inv(modname, material, amount,
meta:get_int("max_offered")))
-- Store how many microblocks are available:
meta:set_int("anz", amount)
meta:set_string("infotext",
S("Circular Saw is working on %s (owned by %s)")
:format(material, meta:get_string("owner") or ""))
end
-- The amount of items offered per shape can be configured:
function circular_saw.on_receive_fields(pos, formname, fields, sender)
local meta = minetest.get_meta(pos)
local max = tonumber(fields.max_offered)
if max and max > 0 then
meta:set_string("max_offered", max)
-- Update to show the correct number of items:
circular_saw:update_inventory(pos, 0)
end
end
-- Moving the inventory of the circular_saw around is not allowed because it
-- is a fictional inventory. Moving inventory around would be rather
-- impractical and make things more difficult to calculate:
function circular_saw.allow_metadata_inventory_move(
pos, from_list, from_index, to_list, to_index, count, player)
return 0
end
-- Only input- and recycle-slot are intended as input slots:
function circular_saw.allow_metadata_inventory_put(
pos, listname, index, stack, player)
-- The player is not allowed to put something in there:
if listname == "output" or listname == "micro" then
return 0
end
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
local stackname = stack:get_name()
local count = stack:get_count()
-- Only alow those items that are offered in the output inventory to be recycled:
if listname == "recycle" then
if not inv:contains_item("output", stackname) then
return 0
end
local stackmax = stack:get_stack_max()
local instack = inv:get_stack("input", 1)
local microstack = inv:get_stack("micro", 1)
local incount = instack:get_count()
local incost = (incount * 8) + microstack:get_count()
local maxcost = (stackmax * 8) + 7
local cost = circular_saw:get_cost(inv, stackname)
if (incost + cost) > maxcost then
return math.max((maxcost - incost) / cost, 0)
end
return count
end
-- Only accept certain blocks as input which are known to be craftable into stairs:
if listname == "input" then
if not inv:is_empty("input") then
if inv:get_stack("input", index):get_name() ~= stackname then
return 0
end
end
if not inv:is_empty("micro") then
local microstackname = inv:get_stack("micro", 1):get_name():gsub("^.+:micro_", "", 1)
local cutstackname = stackname:gsub("^.+:", "", 1)
if microstackname ~= cutstackname then
return 0
end
end
for name, t in pairs(circular_saw.known_nodes) do
if name == stackname and inv:room_for_item("input", stack) then
return count
end
end
return 0
end
end
-- Taking is allowed from all slots (even the internal microblock slot).
-- Putting something in is slightly more complicated than taking anything
-- because we have to make sure it is of a suitable material:
function circular_saw.on_metadata_inventory_put(
pos, listname, index, stack, player)
-- We need to find out if the circular_saw is already set to a
-- specific material or not:
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
local stackname = stack:get_name()
local count = stack:get_count()
-- Putting something into the input slot is only possible if that had
-- been empty before or did contain something of the same material:
if listname == "input" then
-- Each new block is worth 8 microblocks:
circular_saw:update_inventory(pos, 8 * count)
elseif listname == "recycle" then
-- Lets look which shape this represents:
local cost = circular_saw:get_cost(inv, stackname)
local input_stack = inv:get_stack("input", 1)
-- check if this would not exceed input itemstack max_stacks
if input_stack:get_count() + ((cost * count) / 8) <= input_stack:get_stack_max() then
circular_saw:update_inventory(pos, cost * count)
end
end
end
function circular_saw.on_metadata_inventory_take(
pos, listname, index, stack, player)
-- Prevent (inbuilt) swapping between inventories with different blocks
-- corrupting player inventory or Saw with 'unknown' items.
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
local input_stack = inv:get_stack(listname, index)
if not input_stack:is_empty() and input_stack:get_name()~=stack:get_name() then
local player_inv = player:get_inventory()
if player_inv:room_for_item("main", input_stack) then
player_inv:add_item("main", input_stack)
end
circular_saw:reset(pos)
return
end
-- If it is one of the offered stairs: find out how many
-- microblocks have to be substracted:
if listname == "output" then
-- We do know how much each block at each position costs:
local cost = circular_saw.cost_in_microblocks[index]
* stack:get_count()
circular_saw:update_inventory(pos, -cost)
elseif listname == "micro" then
-- Each microblock costs 1 microblock:
circular_saw:update_inventory(pos, -stack:get_count())
elseif listname == "input" then
-- Each normal (= full) block taken costs 8 microblocks:
circular_saw:update_inventory(pos, 8 * -stack:get_count())
end
-- The recycle field plays no role here since it is processed immediately.
end
gui_slots = "listcolors[#606060AA;#808080;#101010;#202020;#FFF]"
function circular_saw.on_construct(pos)
local meta = minetest.get_meta(pos)
local fancy_inv = default.gui_bg..default.gui_bg_img..default.gui_slots
meta:set_string("formspec", "size[11,10]"..fancy_inv..
"label[0,0;" ..S("Input\nmaterial").. "]" ..
"list[current_name;input;1.5,0;1,1;]" ..
"label[0,1;" ..S("Left-over").. "]" ..
"list[current_name;micro;1.5,1;1,1;]" ..
"label[0,2;" ..S("Recycle\noutput").. "]" ..
"list[current_name;recycle;1.5,2;1,1;]" ..
"field[0.3,3.5;1,1;max_offered;" ..S("Max").. ":;${max_offered}]" ..
"button[1,3.2;1,1;Set;" ..S("Set").. "]" ..
"list[current_name;output;2.8,0;8,6;]" ..
"list[current_player;main;1.5,6.25;8,4;]")
meta:set_int("anz", 0) -- No microblocks inside yet.
meta:set_string("max_offered", 99) -- How many items of this kind are offered by default?
meta:set_string("infotext", S("Circular Saw is empty"))
local inv = meta:get_inventory()
inv:set_size("input", 1) -- Input slot for full blocks of material x.
inv:set_size("micro", 1) -- Storage for 1-7 surplus microblocks.
inv:set_size("recycle", 1) -- Surplus partial blocks can be placed here.
inv:set_size("output", 6*8) -- 6x8 versions of stair-parts of material x.
circular_saw:reset(pos)
end
function circular_saw.can_dig(pos,player)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
if not inv:is_empty("input") or
not inv:is_empty("micro") or
not inv:is_empty("recycle") then
return false
end
-- Can be dug by anyone when empty, not only by the owner:
return true
end
minetest.register_node("moreblocks:circular_saw", {
description = S("Circular Saw"),
drawtype = "nodebox",
node_box = {
type = "fixed",
fixed = {
{-0.4, -0.5, -0.4, -0.25, 0.25, -0.25}, -- Leg
{0.25, -0.5, 0.25, 0.4, 0.25, 0.4}, -- Leg
{-0.4, -0.5, 0.25, -0.25, 0.25, 0.4}, -- Leg
{0.25, -0.5, -0.4, 0.4, 0.25, -0.25}, -- Leg
{-0.5, 0.25, -0.5, 0.5, 0.375, 0.5}, -- Tabletop
{-0.01, 0.4375, -0.125, 0.01, 0.5, 0.125}, -- Saw blade (top)
{-0.01, 0.375, -0.1875, 0.01, 0.4375, 0.1875}, -- Saw blade (bottom)
{-0.25, -0.0625, -0.25, 0.25, 0.25, 0.25}, -- Motor case
},
},
tiles = {"moreblocks_circular_saw_top.png",
"moreblocks_circular_saw_bottom.png",
"moreblocks_circular_saw_side.png"},
paramtype = "light",
sunlight_propagates = true,
paramtype2 = "facedir",
groups = {choppy = 2,oddly_breakable_by_hand = 2},
sounds = default.node_sound_wood_defaults(),
on_construct = circular_saw.on_construct,
can_dig = circular_saw.can_dig,
-- Set the owner of this circular saw.
after_place_node = function(pos, placer)
local meta = minetest.get_meta(pos)
local owner = placer and placer:get_player_name() or ""
meta:set_string("owner", owner)
meta:set_string("infotext",
S("Circular Saw is empty (owned by %s)")
:format(owner))
end,
-- The amount of items offered per shape can be configured:
on_receive_fields = circular_saw.on_receive_fields,
allow_metadata_inventory_move = circular_saw.allow_metadata_inventory_move,
-- Only input- and recycle-slot are intended as input slots:
allow_metadata_inventory_put = circular_saw.allow_metadata_inventory_put,
-- Taking is allowed from all slots (even the internal microblock slot). Moving is forbidden.
-- Putting something in is slightly more complicated than taking anything because we have to make sure it is of a suitable material:
on_metadata_inventory_put = circular_saw.on_metadata_inventory_put,
on_metadata_inventory_take = circular_saw.on_metadata_inventory_take,
})