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local explode_port_states = function(state)
local port = {}
port.a = state%2 == 1
port.b = state%4 >= 2
port.c = state%8 >= 4
port.d = state%16 >= 8
return port
end
local implode_port_states = function(port)
local state = 0
if port.a then state = state + 1 end
if port.b then state = state + 2 end
if port.c then state = state + 4 end
if port.d then state = state + 8 end
return state
end
local gettiles = function(state)
tiles = {
"digistuff_ioexp_top.png",
"jeija_microcontroller_bottom.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png"
}
local port = explode_port_states(state)
for p,v in pairs(port) do
if v then
tiles[1] = tiles[1].."^jeija_luacontroller_LED_"..string.upper(p)..".png"
end
end
return tiles
end
local ioexp_get_on_rules = function(state)
local port = explode_port_states(state)
local rules = {}
if port.a then table.insert(rules,vector.new(-1,0,0)) end
if port.b then table.insert(rules,vector.new(0,0,1)) end
if port.c then table.insert(rules,vector.new(1,0,0)) end
if port.d then table.insert(rules,vector.new(0,0,-1)) end
return rules
end
local ioexp_get_off_rules = function(state)
local port = explode_port_states(state)
local rules = {}
if not port.a then table.insert(rules,vector.new(-1,0,0)) end
if not port.b then table.insert(rules,vector.new(0,0,1)) end
if not port.c then table.insert(rules,vector.new(1,0,0)) end
if not port.d then table.insert(rules,vector.new(0,0,-1)) end
return rules
end
local ioexp_digiline_send = function(pos)
local meta = minetest.get_meta(pos)
local channel = meta:get_string("channel")
local port = {
a = meta:get_int("aon") == 1,
b = meta:get_int("bon") == 1,
c = meta:get_int("con") == 1,
d = meta:get_int("don") == 1,
}
local outstate = explode_port_states(meta:get_int("outstate"))
for k,v in pairs(outstate) do port[k] = port[k] or v end
digiline:receptor_send(pos,digiline.rules.default,channel,port)
end
local ioexp_handle_digilines = function(pos,node,channel,msg)
local meta = minetest.get_meta(pos)
if channel ~= meta:get_string("channel") then return end
if msg == "GET" then
ioexp_digiline_send(pos)
return
end
if type(msg) ~= "table" then return end
local state = implode_port_states(msg)
node.name = "digistuff:ioexpander_"..state
meta:set_int("outstate",state)
minetest.swap_node(pos,node)
for _,i in ipairs(ioexp_get_on_rules(state)) do
mesecon.receptor_on(pos,{i})
end
for _,i in ipairs(ioexp_get_off_rules(state)) do
mesecon.receptor_off(pos,{i})
end
end
local ioexp_rule_to_port = function(rule)
if rule.x < 0 then return "a"
elseif rule.z > 0 then return "b"
elseif rule.x > 0 then return "c"
elseif rule.z < 0 then return "d" end
end
local ioexp_handle_mesecons = function(pos,_,rule,state)
local meta = minetest.get_meta(pos)
local port = ioexp_rule_to_port(rule)
if not port then return end
local meta = minetest.get_meta(pos)
meta:set_int(port.."on",state == "on" and 1 or 0)
ioexp_digiline_send(pos)
end
for i=0,15,1 do
local offstate = i == 0
minetest.register_node("digistuff:ioexpander_"..i, {
description = offstate and "Digilines I/O Expander" or string.format("Digilines I/O Expander (on state %X - you hacker you!)",i),
groups = offstate and {cracky = 3,} or {cracky = 3,not_in_creative_inventory = 1,},
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("formspec","field[channel;Channel;${channel}")
meta:set_int("aon",0)
meta:set_int("bon",0)
meta:set_int("con",0)
meta:set_int("don",0)
meta:set_int("outstate",i)
end,
tiles = gettiles(i),
inventory_image = "digistuff_ioexp_top.png",
drawtype = "nodebox",
drop = "digistuff:ioexpander_0",
selection_box = {
--From luacontroller
type = "fixed",
fixed = { -8/16, -8/16, -8/16, 8/16, -5/16, 8/16 },
},
node_box = {
--From Luacontroller
type = "fixed",
fixed = {
{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16}, -- Bottom slab
{-5/16, -7/16, -5/16, 5/16, -6/16, 5/16}, -- Circuit board
{-3/16, -6/16, -3/16, 3/16, -5/16, 3/16}, -- IC
}
},
paramtype = "light",
sunlight_propagates = true,
on_receive_fields = function(pos, formname, fields, sender)
local name = sender:get_player_name()
if minetest.is_protected(pos,name) and not minetest.check_player_privs(name,{protection_bypass=true}) then
minetest.record_protection_violation(pos,name)
return
end
local meta = minetest.get_meta(pos)
if fields.channel then meta:set_string("channel",fields.channel) end
end,
mesecons = {
effector = {
rules = ioexp_get_off_rules(i),
action_change = ioexp_handle_mesecons,
},
receptor = {
state = mesecon.state.on,
rules = ioexp_get_on_rules(i),
},
},
digiline = {
receptor = {},
effector = {
action = ioexp_handle_digilines,
},
},
})
end
minetest.register_craft({
output = "digistuff:ioexpander_0",
recipe = {
{"","mesecons:wire_00000000_off","",},
{"digilines:wire_std_00000000","basic_materials:silicon","mesecons:wire_00000000_off",},
{"","mesecons:wire_00000000_off","",},
}
})
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