First commit, workinging sample

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Samy Avrillon 2024-05-15 21:02:40 +02:00
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.luacheckrc Normal file
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read_globals = {
"DIR_DELIM", "INIT",
"minetest", "core",
"dump", "dump2",
"Raycast",
"Settings",
"PseudoRandom",
"PerlinNoise",
"VoxelManip",
"SecureRandom",
"VoxelArea",
"PerlinNoiseMap",
"PcgRandom",
"ItemStack",
"AreaStore",
"vector",
table = {
fields = {
"copy",
"indexof",
"insert_all",
"key_value_swap",
"shuffle",
}
},
string = {
fields = {
"split",
"trim",
}
},
math = {
fields = {
"hypot",
"sign",
"factorial"
}
},
}

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blocks/cable.lua Normal file
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--[[
cable_NS1 -> One connection from north to south
cable_NW1_ES1 -> One connection from north to west, and another from east to south
cable_NWE8_S8 -> One connection between north, west and east, 8bit single cable from south
cable_0 -> The one cable without connection
--]]
local nodebox_single = {
{-0.0625, -0.5, 0.25, 0.0625, -0.375, 0.5},
{-0.125, -0.5, 0.25, 0.125, -0.25, 0.5}
}
local nodebox_straight = {
{-0.0625, -0.5, -0.5, 0.0625, -0.375, 0.5},
{-0.125, -0.5, -0.5, 0.125, -0.25, 0.5}
}
local nodeboxes_corner = {
{
{-0.5, -0.5, -0.0625, 0.0625, -0.375, 0.0625}, -- NodeBox1
{-0.0625, -0.5, 0.0625, 0.0625, -0.375, 0.5}, -- NodeBox2
},
{
{-0.5, -0.5, -0.125, 0.125, -0.25, 0.125}, -- NodeBox1
{-0.125, -0.5, 0.125, 0.125, -0.25, 0.5}, -- NodeBox2
}
}
local nodeboxes_jump = {
{
{-0.5, -0.5, -0.0625, -0.1875, -0.375, 0.0625}, -- NodeBox2
{0.1875, -0.5, -0.0625, 0.5, -0.375, 0.0625}, -- NodeBox3
{-0.3125, -0.1875, -0.0625, 0.3125, -0.0625, 0.0625}, -- NodeBox4
{-0.3125, -0.375, -0.0625, -0.1875, -0.1875, 0.0625}, -- NodeBox5
{0.1875, -0.375, -0.0625, 0.3125, -0.1875, 0.0625}, -- NodeBox6
},
{
{-0.5, -0.5, -0.125, -0.1875, -0.25, 0.125}, -- NodeBox2
{0.1875, -0.5, -0.125, 0.5, -0.25, 0.125}, -- NodeBox3
{-0.4375, -0.1875, -0.125, 0.4375, 0.0625, 0.125}, -- NodeBox4
{-0.4375, -0.25, -0.125, -0.1875, -0.1875, 0.125}, -- NodeBox5
{0.1875, -0.25, -0.125, 0.4375, -0.1875, 0.125}, -- NodeBox6
}
}
local nodeboxes_ccorner = {
{
{-0.5, -0.5, -0.0625, -0.1875, -0.375, 0.0625}, -- NodeBox1
{-0.0625, -0.5, 0.1875, 0.0625, -0.375, 0.5}, -- NodeBox2
{-0.3125, -0.5, 0.0625, -0.1875, -0.375, 0.3125}, -- NodeBox3
{-0.1875, -0.5, 0.1875, -0.0625, -0.375, 0.3125}, -- NodeBox4
},
{
{-0.5, -0.5, -0.125, -0.125, -0.25, 0.125}, -- NodeBox1
{-0.125, -0.5, 0.125, 0.125, -0.25, 0.5}, -- NodeBox2
{-0.375, -0.5, 0.125, -0.125, -0.25, 0.375}, -- NodeBox4
}
}
local nodeboxes_tri = {
{
{-0.5, -0.5, -0.0625, 0.5, -0.375, 0.0625}, -- NodeBox1
{-0.0625, -0.5, 0.0625, 0.0625, -0.375, 0.5}, -- NodeBox2
},
{
{-0.5, -0.5, -0.125, 0.5, -0.25, 0.125}, -- NodeBox1
{-0.125, -0.5, 0.125, 0.125, -0.25, 0.5}, -- NodeBox2
}
}
local nodeboxes_cross = {
{
{-0.5, -0.5, -0.0625, 0.5, -0.375, 0.0625}, -- NodeBox1
{-0.0625, -0.5, 0.0625, 0.0625, -0.375, 0.5}, -- NodeBox2
{-0.0625, -0.5, -0.5, 0.0625, -0.375, -0.0625}, -- NodeBox3
},
{
{-0.5, -0.5, -0.125, 0.5, -0.25, 0.125}, -- NodeBox1
{-0.125, -0.5, 0.125, 0.125, -0.25, 0.5}, -- NodeBox2
{-0.125, -0.5, -0.5, 0.125, -0.25, -0.125}, -- NodeBox3
}
}
local nodebox_disconnected = {-0.125, -0.5, -0.125, 0.125, -0.25, 0.125}
local function rotateNodebox(nb,rot)
return
(math.fmod(rot,4)==0) and {nb[1],nb[2],nb[3],nb[4],nb[5],nb[6]} or
(math.fmod(rot,4)==1) and {nb[3],nb[2],-nb[1],nb[6],nb[5],-nb[4]} or
(math.fmod(rot,4)==2) and {-nb[1],nb[2],-nb[3],-nb[4],nb[5],-nb[6]} or
(math.fmod(rot,4)==3) and {-nb[3],nb[2],nb[1],-nb[6],nb[5],nb[4]} or
nb -- Should not happen
end
local function rotate4dir(conn,r)
local function rotate4dirOnce(conn)
return math.floor(conn/2) + 8*math.fmod(conn,2)
end
local x = math.fmod(conn,16)
for i=1,r do
x = rotate4dirOnce(x)
end
return (conn - math.fmod(conn,16) + x)
end
local function constArray(val,size)
local t = {}
for i=1,size
do
table.insert(t,val)
end
return t
end
--[[
name: the name of the cable
nodeboxes: All the rendered nodeboxes
connections: A list of connections between NSEW (N=8,E=4,S=2,W=1), +16 when it is 8bit
ex: {4+2,16+1} -> ES + W8
nbconn: Which correspond each nodebox correspond to
ex: {1,1,2,1} -> nodeboxes 1,2,3 correspond to connection ES, and nodebox 2 correspond to connection W
--]]
circuits.cablesnb = {}
circuits.cablesconn = {}
circuits.cablesnbconn = {}
local function createCables(name,nodeboxes,connections,nbconn)
minetest.register_node("circuits:cable_"..name, {
tiles = {
"cable_gray.png",
"cable_gray.png",
"cable_gray.png",
"cable_gray.png",
"cable_gray.png",
"cable_gray.png",
},
drawtype = "nodebox",
paramtype = "light",
node_box = {
type = "fixed",
fixed = nodeboxes
},
groups = {circuitry = 1,dig_immediate = 3}
})
if name == "EW8_N1_S1"
then print(dump(connections)) end
-- We sort the connections and nbconn
local connections2 = table.copy(connections)
table.sort(connections2)
local perm = table.arrperm(connections,connections2)
local nbconn2 = {}
for i,v in ipairs(nbconn)
do
nbconn2[i] = perm[v]
end
if name == "EW8_N1_S1"
then print(dump(connections2)) end
circuits.cablesnb[name] = nodeboxes
circuits.cablesconn[name] = connections2
circuits.cablesnbconn[name] = nbconn2
end
-- cable_NSEW0
for v=1,2 do
createCables("NSEW"..tostring((v-1)*7+1),nodeboxes_cross[v],{(v-1)*16+8+4+2+1},constArray(1,#nodeboxes_cross[v]))
end
--[
-- cable_NW0_SE0
-- cable_NE0_SW0
-- cable_NS0_EW0
for v0=1,2 do
for v1=1,2 do
local nodeboxes = {}
local nbconn = {}
for _,nb in ipairs(nodeboxes_ccorner[v0]) do
table.insert(nodeboxes, nb)
table.insert(nbconn, 1)
end
for _,nb in ipairs(nodeboxes_ccorner[v1]) do
table.insert(nodeboxes, rotateNodebox(nb,2))
table.insert(nbconn, 2)
end
createCables("NW"..tostring((v0-1)*7+1).."_SE"..tostring((v1-1)*7+1),nodeboxes,{(v0-1)*16+8+1,(v1-1)*16+4+2},nbconn)
local nodeboxes = {}
local nbconn = {}
for _,nb in ipairs(nodeboxes_ccorner[v0]) do
table.insert(nodeboxes, rotateNodebox(nb,1))
table.insert(nbconn, 1)
end
for _,nb in ipairs(nodeboxes_ccorner[v1]) do
table.insert(nodeboxes, rotateNodebox(nb,3))
table.insert(nbconn, 2)
end
createCables("NE"..tostring((v0-1)*7+1).."_SW"..tostring((v1-1)*7+1),nodeboxes,{(v0-1)*16+8+4,(v1-1)*16+2+1},nbconn)
local nodeboxes = {}
local nbconn = {}
table.insert(nodeboxes, nodebox_straight[v0])
table.insert(nbconn, 1)
for _,nb in ipairs(nodeboxes_jump[v1]) do
table.insert(nodeboxes, rotateNodebox(nb,2))
table.insert(nbconn, 2)
end
createCables("NS"..tostring((v0-1)*7+1).."_EW"..tostring((v1-1)*7+1),nodeboxes,{(v0-1)*16+8+2,(v1-1)*16+4+1},nbconn)
end
end
-- cable_AB0_C0_D0 -- ("NW","NE","SE","SW") * (/ + C0 + D0 + C0D0)
-- cable_AB0_C0_D0 -- ("NS" "EW") * (/ + C0 + D0 + C0D0)
for v=1,2 do
for v1=0,2 do
for v2=0,2 do
for r,rn in ipairs({{"NW","E","S"},{"NE","S","W"},{"SE","W","N"},{"SW","N","E"}}) do
local nodeboxes = {}
local nbconn = {}
local connz = {rotate4dir((v-1)*16+8+1,r-1)}
for _,nb in ipairs(nodeboxes_corner[v]) do
table.insert(nodeboxes, rotateNodebox(nb,r-1))
table.insert(nbconn, 1)
end
if v1 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v1],r))
table.insert(nbconn, 2)
table.insert(connz,rotate4dir((v1-1)*16+4,r-1))
end
if v2 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v2],r+1))
table.insert(nbconn, v1==0 and 2 or 3)
table.insert(connz,rotate4dir((v2-1)*16+2,r-1))
end
createCables(
rn[1]..tostring((v-1)*7+1)..
(v1~=0 and ("_"..rn[2]..tostring((v1-1)*7+1)) or "")..
(v2~=0 and ("_"..rn[3]..tostring((v2-1)*7+1)) or "")
,nodeboxes,connz,nbconn
)
end
for r,rn in ipairs({{"NS","E","W"},{"EW","N","S"}}) do
local nodeboxes = {}
local nbconn = {}
local connz = {rotate4dir((v-1)*16+8+2,r-1)}
table.insert(nodeboxes, rotateNodebox(nodebox_straight[v],r-1))
table.insert(nbconn, 1)
if v1 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v1],r))
table.insert(nbconn, 2)
table.insert(connz,rotate4dir((v1-1)*16+4,r-1))
end
if v2 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v2],r+2))
table.insert(nbconn, v1==0 and 2 or 3)
table.insert(connz,rotate4dir((v2-1)*16+1,r-1))
end
createCables(
rn[1]..tostring((v-1)*7+1)..
(v1~=0 and ("_"..rn[2]..tostring((v1-1)*7+1)) or "")..
(v2~=0 and ("_"..rn[3]..tostring((v2-1)*7+1)) or ""),
nodeboxes,connz,nbconn
)
end
end
end
end
-- "cable_A0_B0_C0_D0" -- (n s e w ns ...)
for v1=0,2 do
for v2=0,2 do
for v3=0,2 do
for v4=0,2 do
local nodeboxes = {}
local nbconn = {}
local name = ""
local connz = {}
if v1 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v1],0))
table.insert(nbconn, 1)
table.insert(connz,(v1-1)*16+8)
name = name.."_N"..tostring((v1-1)*7+1)
end
if v2 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v2],1))
table.insert(nbconn, #nbconn+1)
table.insert(connz,(v2-1)*16+4)
name = name.."_E"..tostring((v2-1)*7+1)
end
if v3 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v3],2))
table.insert(nbconn, #nbconn+1)
table.insert(connz,(v3-1)*16+2)
name = name.."_S"..tostring((v3-1)*7+1)
end
if v4 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v4],3))
table.insert(nbconn, #nbconn+1)
table.insert(connz,(v4-1)*16+1)
name = name.."_W"..tostring((v4-1)*7+1)
end
if name == "" then
table.insert(nodeboxes, nodebox_disconnected)
table.insert(nbconn, 1)
table.insert(connz,(v1-1)*16+0) -- special case of no connection
name = "_zero"
end
createCables(string.sub(name,2,-1),nodeboxes,connz,nbconn)
end
end
end
end
-- "cable_ABC0_D0" -- ("NEW","NES","ESW","SWN") * (/ + D0)
for v=1,2 do
for v1=0,2 do
for r,rn in ipairs({{"NEW","S"},{"NES","W"},{"ESW","N"},{"SWN","E"}}) do
local nodeboxes = {}
local nbconn = {}
local connz = {rotate4dir((v-1)*16+8+4+1,r-1)}
for _,nb in ipairs(nodeboxes_tri[v]) do
table.insert(nodeboxes, rotateNodebox(nb,r-1))
table.insert(nbconn, 1)
end
if v1 ~= 0 then
table.insert(nodeboxes, rotateNodebox(nodebox_single[v1],r+1))
table.insert(nbconn, 2)
table.insert(connz,rotate4dir((v1-1)*16+2,r-1))
end
createCables(
rn[1]..tostring((v-1)*7+1)..
(v1~=0 and ("_"..rn[2]..tostring((v1-1)*7+1)) or ""),
nodeboxes,connz,nbconn
)
end
end
end
--]]
circuits.cablesfromconn = table.invert(circuits.cablesconn)
function circuits.rotateCable(name,r)
local conn = circuits.cablesconn[name]
local newconn = {}
for i,v in ipairs(conn)
do
newconn[i] = rotate4dir(v,r)
end
table.sort(newconn)
return table.getkey1(circuits.cablesconn,newconn)
end
function circuits.connectInCable(name,a,b)
local conns = table.copy(circuits.cablesconn[name])
local cia = circuits.cablesnbconn[name][a]
local cib = circuits.cablesnbconn[name][b]
local conna = conns[cia]
local connb = conns[cib]
-- If mismatch, v is that of firstly selected cable
local v = math.fmod(math.floor(conna/16),2)
conns[cia] = math.fmod(conna,16) + math.fmod(connb,16) + v*16
table.remove(conns,cib)
table.sort(conns)
return table.getkey1(circuits.cablesconn,conns)
end
function circuits.disconnectInCable(name,a)
local conns = table.copy(circuits.cablesconn[name])
local cindex = circuits.cablesnbconn[name][a]
local conn = conns[cindex]
table.remove(conns,cindex)
if not (conn == 1 or conn == 2 or conn == 4 or conn == 8 or conn == 17 or conn == 18 or conn == 20 or conn == 24)
then -- The connection was more than one-sided, so we recreate the «tips»
if math.fmod(math.floor(conn/1),2)==1
then table.insert(conns,conn>=16 and 17 or 1) end
if math.fmod(math.floor(conn/2),2)==1
then table.insert(conns,conn>=16 and 18 or 2) end
if math.fmod(math.floor(conn/4),2)==1
then table.insert(conns,conn>=16 and 20 or 4) end
if math.fmod(math.floor(conn/8),2)==1
then table.insert(conns,conn>=16 and 24 or 8) end
end
table.sort(conns)
return table.getkey1(circuits.cablesconn,conns)
end

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local _contexts = {}
function circuits.setNameFormspec(targetType, defaultName)
local text = "Please enter the name of this " .. targetType
local formspec = {
"formspec_version[4]",
"size[6,3.476]",
"label[0.375,0.5;", minetest.formspec_escape(text), "]",
"field[0.375,1.25;5.25,0.8;name;".. minetest.formspec_escape(targetType) .. " name;"..(defaultName or "").."]",
"button[1.5,2.3;3,0.8;commit;OK]"
}
-- table.concat is faster than string concatenation - `..`
return table.concat(formspec, "")
end
function circuits.showSetNameFormspec(playerName, targetName)
minetest.show_formspec(playerName, "circuits:setNameFormSpec", circuits.setNameFormspec(targetName))
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname ~= "circuits:setNameFormSpec" then return end
if fields.commit then
local pname = player:get_player_name()
minetest.chat_send_all(pname .. " guessed " .. fields.name)
end
end)
minetest.register_node("circuits:circuitBlock", {
description = "Circuit Block",
tiles = {"circuit_block.png"},
on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
circuits.discoverBlocks(pos)
end,
groups = {circuitry = 1,dig_immediate = 3}
})

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--[[
0 : x+,z+
1 : TODO finish the comment
--]]
local function vecTo8dir(vec)
local x = vec[1]
local z = vec[3]
return
x>=0 and z>=0 and z<=x and 0 or
x>=0 and z>=0 and z>x and 1 or
x<0 and z>=0 and -z<=x and 2 or
x<0 and z>=0 and -z>x and 3 or
x<0 and z<0 and z>=x and 4 or
x<0 and z<0 and z<x and 5 or
x>=0 and z<0 and -z>=x and 6 or
x>=0 and z<0 and -z<x and 7 or
0 -- Should not happen
end
local function addToPos8dir(dir,pos,w,h)
local x = pos[1]
local y = pos[2]
local z = pos[3]
return
dir == 0 and {x = x+h, y = y, z = z+w} or
dir == 1 and {x = x+w, y = y, z = z+h} or
dir == 2 and {x = x-w, y = y, z = z+h} or
dir == 3 and {x = x-h, y = y, z = z+w} or
dir == 4 and {x = x-h, y = y, z = z-w} or
dir == 5 and {x = x-w, y = y, z = z-h} or
dir == 6 and {x = x+w, y = y, z = z-h} or
dir == 7 and {x = x+h, y = y, z = z-w} or
pos -- Should not happen
end
-- Removes a node without calling on on_destruct()
-- We use this to mess with bed nodes without causing unwanted recursion.
local function remove_no_destruct(pos)
minetest.swap_node(pos, {name = "air"})
minetest.remove_node(pos) -- Now clear the meta
minetest.check_for_falling(pos)
end
minetest.register_node("circuits:component_head", {
drawtype = "block",
tiles = {"component.png"},
groups = {circuitry = 1,dig_immediate = 3},
on_place = function(itemstack, placer, pointed_thing)
local w = 3
local h = 5
local under = pointed_thing.under
local node = minetest.get_node(under)
local udef = minetest.registered_nodes[node.name]
-- Rightclick is prioritary
if udef and udef.on_rightclick and
not (placer and placer:is_player() and
placer:get_player_control().sneak) then
return udef.on_rightclick(under, node, placer, itemstack,
pointed_thing) or itemstack
end
-- Pos will be the head location
local pos
if udef and udef.buildable_to then
pos = under
else
pos = pointed_thing.above
end
local player_name = placer and placer:get_player_name() or ""
local dir = placer and placer:get_look_dir() and
vecTo8dir(placer:get_look_dir()) or 0
for i = 0,w*h-1 do
local loc = addToPos8dir(dir,pos,i%w,(i-i%w)/w)
local node_def = minetest.registered_nodes[minetest.get_node(loc).name]
if not node_def or not node_def.buildable_to then
-- Then we cannot build here
return itemstack
end
end
-- If we reached this point, we can build the component
minetest.set_node(pos, {name = "circuits:component_head", param2 = dir})
for i = 1,w*h-1 do
local loc = addToPos8dir(dir,pos,i%w,(i-i%w)/w)
minetest.set_node(loc, {name = "circuits:component_tail", param2 = dir})
end
if not minetest.is_creative_enabled(player_name) then
itemstack:take_item()
end
return itemstack
end,
on_destruct = function(pos)
local w = 3
local h = 5
local node = minetest.get_node(pos)
dir = node.param2
remove_no_destruct(pos) -- Should be circuits:component_head
for i = 1,w*h-1 do
local loc = addToPos8dir(dir,pos,i%w,(i-i%w)/w)
local onode = minetest.get_node(loc)
if onode.name == "circuits:component_tail" and onode.param2 == dir
then
remove_no_destruct(loc)
end
end
end
})
minetest.register_node("circuits:component_tail", {
drawtype = "block",
paramtype2 = "4dir",
groups = {circuitry = 1},
-- Which direction is the one of the head block
tiles = {"component.png^[colorizehsl:120"}
})

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-- component {
-- inputs: ["in1": bit, "in2": bit, "inB": byte],
-- outputs: ["out": byte],
-- name: alu0,
-- optiCompute: fun
-- contents: {
--
-- }
-- }
function circuits.computeCircuit(circuit, input)
end
local function has_value (tab, len, val)
for i = 1, len do
if tab[i].x == val.x and tab[i].y == val.y and tab[i].z == val.z then
return true
end
end
return false
end
function circuits.discoverBlocks(pos)
local i = 2
local j = 1
local poz = {}
poz[1] = pos
while (j<i)
do
local p = poz[j]
j = j+1
print(dump(poz))
print(i)
print(j)
local neighbourhood = {
{x = p.x+1, y = p.y, z = p.z},
{x = p.x-1, y = p.y, z = p.z},
{x = p.x, y = p.y+1, z = p.z},
{x = p.x, y = p.y-1, z = p.z},
{x = p.x, y = p.y, z = p.z+1},
{x = p.x, y = p.y, z = p.z-1}
}
for p2=1,6
do
local n = neighbourhood[p2]
if((not has_value(poz,i-1,n)) and (minetest.get_item_group(minetest.get_node(n).name,"circuitry")==1))
then
poz[i] = n
i = i+1
end
end
end
minetest.chat_send_all("Discovered ".. (i-1) .. " blocks")
end

53
init.lua Normal file
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circuits = {}
dofile(minetest.get_modpath("circuits") .. "/utils.lua")
dofile(minetest.get_modpath("circuits") .. "/circuits.lua")
dofile(minetest.get_modpath("circuits") .. "/blocks/circuit.lua")
dofile(minetest.get_modpath("circuits") .. "/blocks/component.lua")
dofile(minetest.get_modpath("circuits") .. "/blocks/cable.lua")
dofile(minetest.get_modpath("circuits") .. "/items.lua")
minetest.register_on_joinplayer(function(player)
player:hud_set_hotbar_itemcount(24)
end)
minetest.register_node("circuits:inputBlock", {
description = "Input Block",
tiles = {"input_block.png"},
after_place_node = function(pos, placer)
local meta = minetest.get_meta(pos)
meta:set_string("formspec",circuits.setNameFormspec("Input Block"),meta:get_string("name"))
end,
on_receive_fields = function(pos, formname, fields, player)
if fields.quit then
return
end
minetest.get_meta(pos):set_string("name",fields.name)
end,
groups = {circuitry = 1,dig_immediate = 3}
})
minetest.register_node("circuits:outputBlock", {
description = "Output Block",
tiles = {"output_block.png"},
after_place_node = function(pos, placer)
local meta = minetest.get_meta(pos)
meta:set_string("formspec",circuits.setNameFormspec("Output Block"),meta:get_string("name"))
end,
on_receive_fields = function(pos, formname, fields, player)
if fields.quit then
return
end
minetest.get_meta(pos):set_string("name",fields.name)
end,
groups = {circuitry = 1,dig_immediate = 3}
})
print("Circuits loaded")

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minetest.register_craftitem("circuits:rotator", {
description = "The rotator",
inventory_image = "rotator.png",
on_place = function(itemstack, user, pointed_thing)
local node = minetest.get_node(pointed_thing.under)
if not string.startsWith(node.name,"circuits:cable_")
then return itemstack
end
local new = circuits.rotateCable(string.without(node.name,"circuits:cable_"),1)
minetest.swap_node(pointed_thing.under, {name = "circuits:cable_" .. new})
return itemstack
end
})
minetest.register_craftitem("circuits:linker", {
description = "The linker",
inventory_image = "linker.png",
on_place = function(itemstack, user, pointed_thing)
local node = minetest.get_node(pointed_thing.under)
if not string.startsWith(node.name,"circuits:cable_")
then return itemstack
end
local index = circuits.lookingAtNbIndex(user,pointed_thing.under)
-- We check if we clicked the last selected node
local meta = minetest.get_meta(pointed_thing.under)
if meta:get_int("circuits:last_selected_nb") ~= 0
then
-- We connect
local firsti = meta:get_int("circuits:last_selected_nb")
local new = circuits.connectInCable(string.without(node.name,"circuits:cable_"),firsti,index)
minetest.swap_node(pointed_thing.under, {name = "circuits:cable_" .. new})
-- We destroy the saved selected nb
meta:set_int("circuits:last_selected_nb",0)
else
-- We save the selected nb
meta:set_int("circuits:last_selected_nb",index)
end
return itemstack
end
})
minetest.register_craftitem("circuits:unlinker", {
description = "The unlinker",
inventory_image = "unlinker.png",
on_place = function(itemstack, user, pointed_thing)
local node = minetest.get_node(pointed_thing.under)
if not string.startsWith(node.name,"circuits:cable_")
then return itemstack
end
local index = circuits.lookingAtNbIndex(user,pointed_thing.under)
local new = circuits.disconnectInCable(string.without(node.name,"circuits:cable_"),index)
minetest.swap_node(pointed_thing.under, {name = "circuits:cable_" .. new})
return itemstack
end
})

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name=logikraft
description=Logical circuitry in Minetest
depends=default

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function table.indexof(arr,x)
for i,v in ipairs(arr)
do
if v == x
then return i
end
end
end
function table.arrperm(arr1,arr2)
out = {}
for i,v in ipairs(arr1)
do
table.insert(out,table.indexof(arr2,v))
end
return out
end
function table.invert(arr)
out = {}
for k,v in pairs(arr)
do
out[v] = k
end
return out
end
function table.getkey1(arr,x)
for k,v in pairs(arr)
do
if table.equals1(x,v)
then return k
end
end
end
function string.startsWith(str,ex)
return string.sub(str,1,string.len(ex)) == ex
end
function string.without(str,ex)
return string.sub(str,string.len(ex)+1,-1)
end
function table.equals1(arr1,arr2)
for i,v in ipairs(arr1)
do
if arr2[i] ~= v
then return false
end
end
return #arr1 == #arr2
end
local function nodeboxDistance(nb,p)
return
(((nb[1] < p[1]) and (p[1] - nb[1])) or ((p[1] < nb[4]) and (nb[4] - p[1])) or 0) +
(((nb[2] < p[2]) and (p[2] - nb[2])) or ((p[2] < nb[5]) and (nb[5] - p[2])) or 0) +
(((nb[3] < p[3]) and (p[3] - nb[3])) or ((p[3] < nb[6]) and (nb[6] - p[3])) or 0)
end
function circuits.nearestNodeboxIndex(nodeboxes,point)
local minindex=-1
local minvalue = 9999
for i,nb in ipairs(nodeboxes)
do
local d = nodeboxDistance(nb,point)
if d < minvalue
then
minvalue = d
minindex = i
end
end
return minindex
end
function circuits.lookingAtNbIndex(user,under)
local range=5
local eye = vector.add(user:get_pos(),{x=0,y=1.625,z=0})
local objective = vector.add(eye, vector.multiply(user:get_look_dir(),range))
local ray = minetest.raycast(eye,objective,false,false)
for p in ray
do
if p.under.x==under.x and p.under.y==under.y and p.under.z==under.z
then return p.box_id
end
end
return 0
end