pipeworks/item_transport.lua
Vanessa Ezekowitz 28cef5e82f update to use current mesecons API
requires mesecons commit 5be179bf110b44bdc06df6dbfde4e61487cf0635 or newer.
2014-11-22 13:55:54 -05:00

488 lines
15 KiB
Lua
Executable File

local function delay(x)
return (function() return x end)
end
function pipeworks.tube_item(pos, item)
error("obsolete pipeworks.tube_item() called; change caller to use pipeworks.tube_inject_item() instead")
end
function pipeworks.tube_inject_item(pos, start_pos, velocity, item)
-- Take item in any format
local stack = ItemStack(item)
local obj = luaentity.add_entity(pos, "pipeworks:tubed_item")
obj:set_item(stack:to_string())
obj.start_pos = vector.new(start_pos)
obj:setvelocity(velocity)
--obj:set_color("red") -- todo: this is test-only code
return obj
end
-- adding two tube functions
-- can_remove(pos,node,stack,dir) returns the maximum number of items of that stack that can be removed
-- remove_items(pos,node,stack,dir,count) removes count items and returns them
-- both optional w/ sensible defaults and fallback to normal allow_* function
-- XXX: possibly change insert_object to insert_item
local function set_filter_infotext(data, meta)
local infotext = data.wise_desc.." Filter-Injector"
if meta:get_int("slotseq_mode") == 2 then
infotext = infotext .. " (slot #"..meta:get_int("slotseq_index").." next)"
end
meta:set_string("infotext", infotext)
end
local function set_filter_formspec(data, meta)
local itemname = data.wise_desc.." Filter-Injector"
local formspec = "size[8,8.5]"..
"item_image[0,0;1,1;pipeworks:"..data.name.."]"..
"label[1,0;"..minetest.formspec_escape(itemname).."]"..
"label[0,1;Prefer item types:]"..
"list[current_name;main;0,1.5;8,2;]"..
fs_helpers.cycling_button(meta, "button[0,3.5;4,1", "slotseq_mode",
{"Sequence slots by Priority",
"Sequence slots Randomly",
"Sequence slots by Rotation"})..
"list[current_player;main;0,4.5;8,4;]"
meta:set_string("formspec", formspec)
end
-- todo SOON: this function has *way too many* parameters
local function grabAndFire(data,slotseq_mode,filtmeta,frominv,frominvname,frompos,fromnode,filtername,fromtube,fromdef,dir,fakePlayer,all)
local sposes = {}
for spos,stack in ipairs(frominv:get_list(frominvname)) do
local matches
if filtername == "" then
matches = stack:get_name() ~= ""
else
matches = stack:get_name() == filtername
end
if matches then table.insert(sposes, spos) end
end
if #sposes == 0 then return false end
if slotseq_mode == 1 then
for i = #sposes, 2, -1 do
local j = math.random(i)
local t = sposes[j]
sposes[j] = sposes[i]
sposes[i] = t
end
elseif slotseq_mode == 2 then
local headpos = filtmeta:get_int("slotseq_index")
table.sort(sposes, function (a, b)
if a >= headpos then
if b < headpos then return true end
else
if b >= headpos then return false end
end
return a < b
end)
end
for _, spos in ipairs(sposes) do
local stack = frominv:get_stack(frominvname, spos)
local doRemove = stack:get_count()
if fromtube.can_remove then
doRemove = fromtube.can_remove(frompos, fromnode, stack, dir)
elseif fromdef.allow_metadata_inventory_take then
doRemove = fromdef.allow_metadata_inventory_take(frompos, frominvname,spos, stack, fakePlayer)
end
-- stupid lack of continue statements grumble
if doRemove > 0 then
if slotseq_mode == 2 then
local nextpos = spos + 1
if nextpos > frominv:get_size(frominvname) then
nextpos = 1
end
filtmeta:set_int("slotseq_index", nextpos)
set_filter_infotext(data, filtmeta)
end
local item
local count
if all then
count = math.min(stack:get_count(), doRemove)
else
count = 1
end
if fromtube.remove_items then
-- it could be the entire stack...
item = fromtube.remove_items(frompos, fromnode, stack, dir, count)
else
item = stack:take_item(count)
frominv:set_stack(frominvname, spos, stack)
if fromdef.on_metadata_inventory_take then
fromdef.on_metadata_inventory_take(frompos, frominvname, spos, item, fakePlayer)
end
end
local pos = vector.add(frompos, vector.multiply(dir, 1.4))
local start_pos = vector.add(frompos, dir)
local item1 = pipeworks.tube_inject_item(pos, start_pos, dir, item)
return true-- only fire one item, please
end
end
return false
end
local function punch_filter(data, filtpos, filtnode)
local filtmeta = minetest.get_meta(filtpos)
local filtinv = filtmeta:get_inventory()
local owner = filtmeta:get_string("owner")
local fakePlayer = {
get_player_name = delay(owner),
} -- TODO: use a mechanism as the wielder one
local dir = minetest.facedir_to_right_dir(filtnode.param2)
local frompos = vector.subtract(filtpos, dir)
local fromnode = minetest.get_node(frompos)
if not fromnode then return end
local fromdef = minetest.registered_nodes[fromnode.name]
if not fromdef then return end
local fromtube = fromdef.tube
if not (fromtube and fromtube.input_inventory) then return end
local filters = {}
for _, filterstack in ipairs(filtinv:get_list("main")) do
local filtername = filterstack:get_name()
if filtername ~= "" then table.insert(filters, filtername) end
end
if #filters == 0 then table.insert(filters, "") end
local slotseq_mode = filtmeta:get_int("slotseq_mode")
local frommeta = minetest.get_meta(frompos)
local frominv = frommeta:get_inventory()
if fromtube.before_filter then fromtube.before_filter(frompos) end
for _, frominvname in ipairs(type(fromtube.input_inventory) == "table" and fromtube.input_inventory or {fromtube.input_inventory}) do
local done = false
for _, filtername in ipairs(filters) do
if grabAndFire(data, slotseq_mode, filtmeta, frominv, frominvname, frompos, fromnode, filtername, fromtube, fromdef, dir, fakePlayer, data.stackwise) then
done = true
break
end
end
if done then break end
end
if fromtube.after_filter then fromtube.after_filter(frompos) end
end
for _, data in ipairs({
{
name = "filter",
wise_desc = "Itemwise",
stackwise = false,
},
{
name = "mese_filter",
wise_desc = "Stackwise",
stackwise = true,
},
}) do
minetest.register_node("pipeworks:"..data.name, {
description = data.wise_desc.." Filter-Injector",
tiles = {
"pipeworks_"..data.name.."_top.png",
"pipeworks_"..data.name.."_top.png",
"pipeworks_"..data.name.."_output.png",
"pipeworks_"..data.name.."_input.png",
"pipeworks_"..data.name.."_side.png",
"pipeworks_"..data.name.."_top.png",
},
paramtype2 = "facedir",
groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 2, mesecon = 2},
legacy_facedir_simple = true,
sounds = default.node_sound_wood_defaults(),
on_construct = function(pos)
local meta = minetest.get_meta(pos)
set_filter_formspec(data, meta)
set_filter_infotext(data, meta)
local inv = meta:get_inventory()
inv:set_size("main", 8*2)
end,
after_place_node = function (pos, placer)
minetest.get_meta(pos):set_string("owner", placer:get_player_name())
end,
on_receive_fields = function(pos, formname, fields, sender)
fs_helpers.on_receive_fields(pos, fields)
local meta = minetest.get_meta(pos)
meta:set_int("slotseq_index", 1)
set_filter_formspec(data, meta)
set_filter_infotext(data, meta)
end,
can_dig = function(pos, player)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
return inv:is_empty("main")
end,
mesecons = {
effector = {
action_on = function(pos, node)
punch_filter(data, pos, node)
end,
},
},
tube = {connect_sides = {right = 1}},
on_punch = function (pos, node, puncher)
punch_filter(data, pos, node)
end,
})
end
local adjlist={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=1,y=0,z=0},{x=-1,y=0,z=0}}
function pipeworks.notvel(tbl, vel)
local tbl2={}
for _,val in ipairs(tbl) do
if val.x ~= -vel.x or val.y ~= -vel.y or val.z ~= -vel.z then table.insert(tbl2, val) end
end
return tbl2
end
local function go_next(pos, velocity, stack)
local next_positions = {}
local max_priority = 0
local cnode = minetest.get_node(pos)
local cmeta = minetest.get_meta(pos)
local can_go
local speed = math.abs(velocity.x + velocity.y + velocity.z)
if speed == 0 then
speed = 1
end
local vel = {x = velocity.x/speed, y = velocity.y/speed, z = velocity.z/speed,speed=speed}
if speed >= 4.1 then
speed = 4
elseif speed >= 1.1 then
speed = speed - 0.1
else
speed = 1
end
vel.speed = speed
if minetest.registered_nodes[cnode.name] and minetest.registered_nodes[cnode.name].tube and minetest.registered_nodes[cnode.name].tube.can_go then
can_go = minetest.registered_nodes[cnode.name].tube.can_go(pos, cnode, vel, stack)
else
can_go = pipeworks.notvel(adjlist, vel)
end
for _, vect in ipairs(can_go) do
local npos = vector.add(pos, vect)
local node = minetest.get_node(npos)
local reg_node = minetest.registered_nodes[node.name]
if reg_node then
local tube_def = reg_node.tube
local tubedevice = minetest.get_item_group(node.name, "tubedevice")
local tube_priority = (tube_def and tube_def.priority) or 100
if tubedevice > 0 and tube_priority >= max_priority then
if not tube_def or not tube_def.can_insert or
tube_def.can_insert(npos, node, stack, vect) then
if tube_priority > max_priority then
max_priority = tube_priority
next_positions = {}
end
next_positions[#next_positions + 1] = {pos = npos, vect = vect}
end
end
end
end
if not next_positions[1] then
return false, nil
end
local n = (cmeta:get_int("tubedir") % (#next_positions)) + 1
if pipeworks.enable_cyclic_mode then
cmeta:set_int("tubedir", n)
end
local new_velocity = vector.multiply(next_positions[n].vect, vel.speed)
return true, new_velocity
end
minetest.register_entity("pipeworks:tubed_item", {
initial_properties = {
hp_max = 1,
physical = false,
collisionbox = {0.1, 0.1, 0.1, 0.1, 0.1, 0.1},
visual = "wielditem",
visual_size = {x = 0.15, y = 0.15},
textures = {""},
spritediv = {x = 1, y = 1},
initial_sprite_basepos = {x = 0, y = 0},
is_visible = false,
},
physical_state = false,
from_data = function(self, itemstring)
local stack = ItemStack(itemstring)
local itemtable = stack:to_table()
local itemname = nil
if itemtable then
itemname = stack:to_table().name
end
local item_texture = nil
local item_type = ""
if minetest.registered_items[itemname] then
item_texture = minetest.registered_items[itemname].inventory_image
item_type = minetest.registered_items[itemname].type
end
self.object:set_properties({
is_visible = true,
textures = {stack:get_name()}
})
local def = stack:get_definition()
self.object:setyaw((def and def.type == "node") and 0 or math.pi * 0.25)
end,
get_staticdata = luaentity.get_staticdata,
on_activate = function(self, staticdata) -- Legacy code, should be replaced later by luaentity.on_activate
if staticdata == "" or staticdata == nil then
return
end
if staticdata == "toremove" then
self.object:remove()
return
end
local item = minetest.deserialize(staticdata)
pipeworks.tube_inject_item(self.object:getpos(), item.start_pos, item.velocity, item.itemstring)
self.object:remove()
end,
})
minetest.register_entity("pipeworks:color_entity", {
initial_properties = {
hp_max = 1,
physical = false,
collisionbox = {0.1, 0.1, 0.1, 0.1, 0.1, 0.1},
visual = "cube",
visual_size = {x = 3.5, y = 3.5, z = 3.5}, -- todo: find correct size
textures = {""},
is_visible = false,
},
physical_state = false,
from_data = function(self, color)
local t = "pipeworks_color_"..color..".png"
local prop = {
is_visible = true,
visual = "cube",
textures = {t, t, t, t, t, t} -- todo: textures
}
self.object:set_properties(prop)
end,
get_staticdata = luaentity.get_staticdata,
on_activate = luaentity.on_activate,
})
luaentity.register_entity("pipeworks:tubed_item", {
itemstring = '',
item_entity = nil,
color_entity = nil,
color = nil,
start_pos = nil,
set_item = function(self, item)
local itemstring = ItemStack(item):to_string() -- Accept any input format
if self.itemstring == itemstring then
return
end
if self.item_entity then
self:remove_attached_entity(self.item_entity)
end
self.itemstring = itemstring
self.item_entity = self:add_attached_entity("pipeworks:tubed_item", itemstring)
end,
set_color = function(self, color)
if self.color == color then
return
end
self.color = color
if self.color_entity then
self:remove_attached_entity(self.color_entity)
end
if color then
self.color_entity = self:add_attached_entity("pipeworks:color_entity", color)
else
self.color_entity = nil
end
end,
on_step = function(self, dtime)
if self.start_pos == nil then
local pos = self:getpos()
self.start_pos = vector.round(pos)
self:setpos(pos)
end
local pos = self:getpos()
local stack = ItemStack(self.itemstring)
local drop_pos
local velocity = self:getvelocity()
local moved = false
local speed = math.abs(velocity.x + velocity.y + velocity.z)
if speed == 0 then
speed = 1
moved = true
end
local vel = {x = velocity.x / speed, y = velocity.y / speed, z = velocity.z / speed, speed = speed}
if vector.distance(pos, self.start_pos) >= 1 then
self.start_pos = vector.add(self.start_pos, vel)
moved = true
end
minetest.load_position(self.start_pos)
local node = minetest.get_node(self.start_pos)
if moved and minetest.get_item_group(node.name, "tubedevice_receiver") == 1 then
local leftover
if minetest.registered_nodes[node.name].tube and minetest.registered_nodes[node.name].tube.insert_object then
leftover = minetest.registered_nodes[node.name].tube.insert_object(self.start_pos, node, stack, vel)
else
leftover = stack
end
if leftover:is_empty() then
self:remove()
return
end
velocity = vector.multiply(velocity, -1)
self:setvelocity(velocity)
self:set_item(leftover:to_string())
return
end
if moved then
local found_next, new_velocity = go_next(self.start_pos, velocity, stack) -- todo: color
if not found_next then
drop_pos = minetest.find_node_near(vector.add(self.start_pos, velocity), 1, "air")
if drop_pos then
minetest.item_drop(stack, "", drop_pos)
self:remove()
return
end
end
if new_velocity and not vector.equals(velocity, new_velocity) then
self:setpos(self.start_pos)
self:setvelocity(new_velocity)
end
end
end
})
if minetest.get_modpath("mesecons_mvps") then
mesecon.register_mvps_unmov("pipeworks:tubed_item")
mesecon.register_mvps_unmov("pipeworks:color_entity")
mesecon.register_on_mvps_move(function(moved_nodes)
local moved = {}
for _, n in ipairs(moved_nodes) do
moved[minetest.hash_node_position(n.oldpos)] = vector.subtract(n.pos, n.oldpos)
end
for id, entity in pairs(luaentity.entities) do
if entity.name == "pipeworks:tubed_item" then
local pos = entity:getpos()
local rpos = vector.round(pos)
local dir = moved[minetest.hash_node_position(rpos)]
if dir then
entity:setpos(vector.add(pos, dir))
entity.start_pos = vector.add(entity.start_pos, dir)
end
end
end
end)
end