pipeworks/item_transport.lua

581 lines
16 KiB
Lua

modpath=minetest.get_modpath("pipeworks")
dofile(modpath.."/compat.lua")
--define the functions from https://github.com/minetest/minetest/pull/834 while waiting for the devs to notice it
local function dir_to_facedir(dir, is6d)
--account for y if requested
if is6d and math.abs(dir.y) > math.abs(dir.x) and math.abs(dir.y) > math.abs(dir.z) then
--from above
if dir.y < 0 then
if math.abs(dir.x) > math.abs(dir.z) then
if dir.x < 0 then
return 19
else
return 13
end
else
if dir.z < 0 then
return 10
else
return 4
end
end
--from below
else
if math.abs(dir.x) > math.abs(dir.z) then
if dir.x < 0 then
return 15
else
return 17
end
else
if dir.z < 0 then
return 6
else
return 8
end
end
end
--otherwise, place horizontally
elseif math.abs(dir.x) > math.abs(dir.z) then
if dir.x < 0 then
return 3
else
return 1
end
else
if dir.z < 0 then
return 2
else
return 0
end
end
end
local function facedir_to_dir(facedir)
--a table of possible dirs
return ({{x=0, y=0, z=1},
{x=1, y=0, z=0},
{x=0, y=0, z=-1},
{x=-1, y=0, z=0},
{x=0, y=-1, z=0},
{x=0, y=1, z=0}})
--indexed into by a table of correlating facedirs
[({[0]=1, 2, 3, 4,
5, 2, 6, 4,
6, 2, 5, 4,
1, 5, 3, 6,
1, 6, 3, 5,
1, 4, 3, 2})
--indexed into by the facedir in question
[facedir]]
end
--and an extra function for getting the right-facing vector
local function facedir_to_right_dir(facedir)
--find the other directions
local backdir = facedir_to_dir(facedir)
local topdir = ({[0]={x=0, y=1, z=0},
{x=0, y=0, z=1},
{x=0, y=0, z=-1},
{x=1, y=0, z=0},
{x=-1, y=0, z=0},
{x=0, y=-1, z=0}})[math.floor(facedir/4)]
--return a cross product
return {x=topdir.y*backdir.z - backdir.y*topdir.z,
y=topdir.z*backdir.x - backdir.z*topdir.x,
z=topdir.x*backdir.y - backdir.x*topdir.y}
end
minetest.register_craftitem("pipeworks:filter", {
description = "Filter",
stack_max = 99,
})
local fakePlayer = {
get_player_name = function() return ":pipeworks" end,
-- any other player functions called by allow_metadata_inventory_take anywhere...
-- perhaps a custom metaclass that errors specially when fakePlayer.<property> is not found?
}
-- adding two tube functions
-- can_remove(pos,node,stack,dir) returns true if an item can be removed from that stack on that node
-- 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
-- sname = the current name to allow for, or nil if it allows anything
function grabAndFire(frominv,frominvname,frompos,fromnode,sname,tube,idef,dir,all)
for spos,stack in ipairs(frominv:get_list(frominvname)) do
if ( sname == nil and stack:get_name() ~= "") or stack:get_name()==sname then
local doRemove = true
if tube.can_remove then
doRemove = tube.can_remove(frompos, fromnode, stack, dir)
elseif idef.allow_metadata_inventory_take then
doRemove = idef.allow_metadata_inventory_take(frompos,"main",spos, stack, fakePlayer)
end
-- stupid lack of continue statements grumble
if doRemove then
local item
local count
if all then
count = stack:get_count()
else
count = 1
end
if tube.remove_items then
-- it could be the entire stack...
item=tube.remove_items(frompos,fromnode,stack,dir,count)
else
item=stack:take_item(count)
frominv:set_stack(frominvname,spos,stack)
if idef.on_metadata_inventory_take then
idef.on_metadata_inventory_take(frompos, "main", spos, item, fakePlayer)
end
end
item1=tube_item(frompos,item)
item1:get_luaentity().start_pos = frompos
item1:setvelocity(dir)
item1:setacceleration({x=0, y=0, z=0})
return -- only fire one item, please
end
end
end
end
minetest.register_node("pipeworks:filter", {
description = "Filter",
tiles = {"pipeworks_filter_top.png", "pipeworks_filter_top.png", "pipeworks_filter_output.png",
"pipeworks_filter_input.png", "pipeworks_filter_side.png", "pipeworks_filter_top.png"},
paramtype2 = "facedir",
groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2,tubedevice=1,mesecon=2},
legacy_facedir_simple = true,
sounds = default.node_sound_wood_defaults(),
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("formspec",
"invsize[8,6.5;]"..
"list[current_name;main;0,0;8,2;]"..
"list[current_player;main;0,2.5;8,4;]")
meta:set_string("infotext", "Filter")
local inv = meta:get_inventory()
inv:set_size("main", 8*4)
end,
can_dig = function(pos,player)
local meta = minetest.get_meta(pos);
local inv = meta:get_inventory()
return inv:is_empty("main")
end,
after_place_node = function(pos)
tube_scanforobjects(pos)
end,
after_dig_node = function(pos)
tube_scanforobjects(pos)
end,
mesecons={effector={action_on=function(pos,node)
minetest.registered_nodes[node.name].on_punch(pos,node,nil)
end}},
tube={connect_sides={right=1}},
on_punch = function (pos, node, puncher)
local meta = minetest.get_meta(pos);
local inv = meta:get_inventory()
local dir = facedir_to_right_dir(node.param2)
local frompos = {x=pos.x - dir.x, y=pos.y - dir.y, z=pos.z - dir.z}
local fromnode=minetest.get_node(frompos)
if not fromnode then return end
local frominv
local idef = minetest.registered_nodes[fromnode.name]
-- assert(idef)
local tube = idef.tube
if not (tube and tube.input_inventory) then
return
end
local frommeta=minetest.get_meta(frompos)
local frominvname=tube.input_inventory
local frominv=frommeta:get_inventory()
for _,filter in ipairs(inv:get_list("main")) do
local sname=filter:get_name()
if sname ~="" then
-- XXX: that's a lot of parameters
grabAndFire(frominv,frominvname,frompos,fromnode,sname,tube,idef,dir)
end
end
if inv:is_empty("main") then
grabAndFire(frominv,frominvname,frompos,fromnode,nil,tube,idef,dir)
end
end,
})
minetest.register_craftitem("pipeworks:mese_filter", {
description = "Mese filter",
stack_max = 99,
})
minetest.register_node("pipeworks:mese_filter", {
description = "Mese filter",
tiles = {"pipeworks_mese_filter_top.png", "pipeworks_mese_filter_top.png", "pipeworks_mese_filter_output.png",
"pipeworks_mese_filter_input.png", "pipeworks_mese_filter_side.png", "pipeworks_mese_filter_top.png"},
paramtype2 = "facedir",
groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2,tubedevice=1,mesecon=2},
legacy_facedir_simple = true,
sounds = default.node_sound_wood_defaults(),
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("formspec",
"invsize[8,6.5;]"..
"list[current_name;main;0,0;8,2;]"..
"list[current_player;main;0,2.5;8,4;]")
meta:set_string("infotext", "Mese filter")
local inv = meta:get_inventory()
inv:set_size("main", 8*4)
end,
can_dig = function(pos,player)
local meta = minetest.get_meta(pos);
local inv = meta:get_inventory()
return inv:is_empty("main")
end,
after_place_node = function(pos)
tube_scanforobjects(pos)
end,
after_dig_node = function(pos)
tube_scanforobjects(pos)
end,
mesecons={effector={action_on=function(pos,node)
minetest.registered_nodes[node.name].on_punch(pos,node,nil)
end}},
tube={connect_sides={right=1}},
on_punch = function (pos, node, puncher)
local meta = minetest.get_meta(pos);
local inv = meta:get_inventory()
local dir = facedir_to_right_dir(node.param2)
local frompos = {x=pos.x - dir.x, y=pos.y - dir.y, z=pos.z - dir.z}
local fromnode=minetest.get_node(frompos)
local frominv
local idef = minetest.registered_nodes[fromnode.name]
-- assert(idef)
local tube = idef.tube
if not (tube and tube.input_inventory) then
return
end
local frommeta=minetest.get_meta(frompos)
local frominvname=minetest.registered_nodes[fromnode.name].tube.input_inventory
local frominv=frommeta:get_inventory()
for _,filter in ipairs(inv:get_list("main")) do
local sname=filter:get_name()
if sname ~="" then
grabAndFire(frominv,frominvname,frompos,fromnode,sname,tube,idef,dir,true)
end
end
if inv:is_empty("main") then
grabAndFire(frominv,frominvname,frompos,fromnode,sname,tube,idef,dir,true)
end
end,
})
function tube_item(pos, item)
-- Take item in any format
local stack = ItemStack(item)
local obj = minetest.add_entity(pos, "pipeworks:tubed_item")
obj:get_luaentity():set_item(stack:to_string())
return obj
end
local function roundpos(pos)
return {x=math.floor(pos.x+0.5),y=math.floor(pos.y+0.5),z=math.floor(pos.z+0.5)}
end
minetest.register_entity("pipeworks:tubed_item", {
initial_properties = {
hp_max = 1,
physical = false,
-- collisionbox = {0,0,0,0,0,0},
collisionbox = {0.1,0.1,0.1,0.1,0.1,0.1},
visual = "sprite",
visual_size = {x=0.5, y=0.5},
textures = {""},
spritediv = {x=1, y=1},
initial_sprite_basepos = {x=0, y=0},
is_visible = false,
start_pos={},
route={}
},
itemstring = '',
physical_state = false,
set_item = function(self, itemstring)
self.itemstring = 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
prop = {
is_visible = true,
visual = "sprite",
textures = {"unknown_item.png"}
}
if item_texture and item_texture ~= "" then
prop.visual = "sprite"
prop.textures = {item_texture}
prop.visual_size = {x=0.3, y=0.3}
else
prop.visual = "wielditem"
prop.textures = {itemname}
prop.visual_size = {x=0.15, y=0.15}
end
self.object:set_properties(prop)
end,
get_staticdata = function(self)
if self.start_pos==nil then return end
local velocity=self.object:getvelocity()
--self.object:setvelocity({x=0,y=0,z=0})
self.object:setpos(self.start_pos)
return minetest.serialize({
itemstring=self.itemstring,
velocity=velocity,
start_pos=self.start_pos
})
end,
on_activate = function(self, staticdata)
if staticdata=="" or staticdata==nil then return end
local item = minetest.deserialize(staticdata)
local stack = ItemStack(item.itemstring)
local itemtable = stack:to_table()
local itemname = nil
if itemtable then
itemname = stack:to_table().name
end
if itemname then
self.start_pos=item.start_pos
self.object:setvelocity(item.velocity)
self.object:setacceleration({x=0, y=0, z=0})
self.object:setpos(item.start_pos)
end
self:set_item(item.itemstring)
end,
on_step = function(self, dtime)
if self.start_pos==nil then
local pos = self.object:getpos()
self.start_pos=roundpos(pos)
end
local pos = self.object:getpos()
local node = minetest.get_node(pos)
local meta = minetest.get_meta(pos)
tubelike=meta:get_int("tubelike")
local stack = ItemStack(self.itemstring)
local drop_pos=nil
local velocity=self.object:getvelocity()
if velocity==nil then return end
local velocitycopy={x=velocity.x,y=velocity.y,z=velocity.z}
local moved=false
local speed=math.abs(velocity.x+velocity.y+velocity.z)
local vel={x=velocity.x/speed,y=velocity.y/speed,z=velocity.z/speed}
if math.abs(vel.x)==1 then
local next_node=math.abs(pos.x-self.start_pos.x)
if next_node >= 1 then
self.start_pos.x=self.start_pos.x+vel.x
moved=true
end
elseif math.abs(vel.y)==1 then
local next_node=math.abs(pos.y-self.start_pos.y)
if next_node >= 1 then
self.start_pos.y=self.start_pos.y+vel.y
moved=true
end
elseif math.abs(vel.z)==1 then
local next_node=math.abs(pos.z-self.start_pos.z)
if next_node >= 1 then
self.start_pos.z=self.start_pos.z+vel.z
moved=true
end
end
local sposcopy={x=self.start_pos.x,y=self.start_pos.y,z=self.start_pos.z}
node = minetest.get_node(self.start_pos)
if moved and minetest.get_item_group(node.name,"tubedevice_receiver")==1 then
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
--drop_pos=minetest.find_node_near(self.start_pos,1,"air")
--if drop_pos and not leftover:is_empty() then minetest.item_drop(leftover,"",drop_pos) end
--self.object:remove()
if leftover:is_empty() then
self.object:remove()
return
end
velocity.x=-velocity.x
velocity.y=-velocity.y
velocity.z=-velocity.z
self.object:setvelocity(velocity)
self:set_item(leftover:to_string())
return
end
if moved then
if go_next (self.start_pos, velocity, stack)==0 then
drop_pos=minetest.find_node_near({x=self.start_pos.x+velocity.x,y=self.start_pos.y+velocity.y,z=self.start_pos.z+velocity.z}, 1, "air")
if drop_pos then
minetest.item_drop(stack, "", drop_pos)
self.object:remove()
end
end
end
if velocity.x~=velocitycopy.x or velocity.y~=velocitycopy.y or velocity.z~=velocitycopy.z or
self.start_pos.x~=sposcopy.x or self.start_pos.y~=sposcopy.y or self.start_pos.z~=sposcopy.z then
self.object:setpos(self.start_pos)
self.object:setvelocity(velocity)
end
end
})
local function addVect(pos,vect)
return {x=pos.x+vect.x,y=pos.y+vect.y,z=pos.z+vect.z}
end
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 notvel(tbl,vel)
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
function go_next(pos,velocity,stack)
local chests={}
local tubes={}
local cnode=minetest.get_node(pos)
local cmeta=minetest.get_meta(pos)
local node
local meta
local tubelike
local tube_receiver
local len=1
local n
local can_go
local speed=math.abs(velocity.x+velocity.y+velocity.z)
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,node,vel,stack)
else
can_go=notvel(adjlist,vel)
end
for _,vect in ipairs(can_go) do
npos=addVect(pos,vect)
node=minetest.get_node(npos)
tube_receiver=minetest.get_item_group(node.name,"tubedevice_receiver")
meta=minetest.get_meta(npos)
tubelike=meta:get_int("tubelike")
if tube_receiver==1 then
if minetest.registered_nodes[node.name].tube and
minetest.registered_nodes[node.name].tube.can_insert and
minetest.registered_nodes[node.name].tube.can_insert(npos,node,stack,vect) then
local i=1
repeat
if chests[i]==nil then break end
i=i+1
until false
chests[i]={}
chests[i].pos=npos
chests[i].vect=vect
end
elseif tubelike==1 then
local i=1
repeat
if tubes[i]==nil then break end
i=i+1
until false
tubes[i]={}
tubes[i].pos=npos
tubes[i].vect=vect
end
end
if chests[1]==nil then--no chests found
if tubes[1]==nil then
return 0
else
local i=1
repeat
if tubes[i]==nil then break end
i=i+1
until false
n=meta:get_int("tubedir")+1
repeat
if n>=i then
n=n-i+1
else
break
end
until false
if CYCLIC then
meta:set_int("tubedir",n)
end
velocity.x=tubes[n].vect.x*vel.speed
velocity.y=tubes[n].vect.y*vel.speed
velocity.z=tubes[n].vect.z*vel.speed
end
else
local i=1
repeat
if chests[i]==nil then break end
i=i+1
until false
n=meta:get_int("tubedir")+1
repeat
if n>=i then
n=n-i+1
else
break
end
until false
if CYCLIC then
meta:set_int("tubedir",n)
end
velocity.x=chests[n].vect.x*speed
velocity.y=chests[n].vect.y*speed
velocity.z=chests[n].vect.z*speed
end
return 1
end