scifi_nodes/digicode.lua

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-- Digicode --
--------------
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local has_mesecons = minetest.get_modpath("mesecons")
local secret_code = "1234"
local allowed_chars = "0123456789"
local code_length = 4
local digicode_context = {}
-- after_place_node, use by digicode and palm_scanner
-- placer is a player object
local function set_owner(pos, placer, itemstack, pointed_thing)
local meta = minetest.get_meta(pos)
meta:set_string("owner", placer:get_player_name())
meta:set_string("code", secret_code)
end
local function toggle_digicode(pos)
local node = minetest.get_node(pos)
local name = node.name
if name == "scifi_nodes:digicode_off" then
minetest.swap_node(pos, {name="scifi_nodes:digicode_on", param2=node.param2})
mesecon.receptor_on(pos, scifi_nodes.get_switch_rules(node.param2))
minetest.get_node_timer(pos):start(2)
elseif name == "scifi_nodes:digicode_on" then
minetest.swap_node(pos, {name="scifi_nodes:digicode_off", param2=node.param2})
mesecon.receptor_off(pos, scifi_nodes.get_switch_rules(node.param2))
end
end
local function code_is_valid(code)
local valid = false
if type(code) == "string" and #code == code_length then
valid = true
end
for i=1, #code do
if not string.find(allowed_chars, string.sub(code,i,i)) then
valid = false
end
end
return valid
end
local function update_code(pos, code)
local meta = minetest.get_meta(pos)
meta:set_string("code", code)
end
local function show_digicode_formspec(pos, node, player, itemstack, pointed_thing)
local meta = minetest.get_meta(pos)
local owner = meta:get_string("owner")
local current_code = meta:get_string("code")
local current_player = player:get_player_name()
-- Gathering datas that will be used by callback function
digicode_context[current_player] = {code = current_code, pos = pos}
if current_player == owner then
minetest.show_formspec(current_player, "digicode_formspec",
"size[6,3]"..
"field[1,1;3,1;code;Code;]".. -- type, position, size, name, label
"button_exit[1,2;2,1;change;Change code]"..
"button_exit[3,2;2,1;open;Open door]")
else
minetest.show_formspec(current_player, "digicode_formspec",
"size[6,3]"..
"field[2,1;3,1;code;Code;]"..
"button_exit[2,2;3,1;open;Open door]")
end
end
-- Process datas from digicode_formspec
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname ~= "digicode_formspec" then
return false
end
local sounds = {"scifi_nodes_scanner_granted","scifi_nodes_scanner_refused",
"scifi_nodes_digicode_granted","scifi_nodes_digicode_refused"
}
local sound_index
-- We have the right formspec so we can proceed it.
-- Let's retrieve the datas we need :
local context = digicode_context[player:get_player_name()]
if fields.change and code_is_valid(fields.code) then
update_code(context.pos, fields.code)
sound_index = 1
elseif
fields.change and not code_is_valid(fields.code) then
sound_index = 2
elseif
fields.open and fields.code == context.code then
toggle_digicode(context.pos)
sound_index = 3
elseif
fields.open and fields.code ~= context.code then
sound_index = 4
end
-- play sound at context position
minetest.sound_play(sounds[sound_index], {
pos = context.pos,
max_hear_distance = 10
})
context[player:get_player_name()] = nil -- we don't need it anymore
end)
minetest.register_node("scifi_nodes:digicode_on", {
description = "Digicode",
sunlight_propagates = true,
buildable_to = false,
tiles = {"scifi_nodes_digicode_on.png",},
inventory_image = "scifi_nodes_digicode_on.png",
wield_image = "scifi_nodes_digicode_on.png",
drawtype = "signlike",
node_box = {type = "wallmounted",},
selection_box = {type = "wallmounted",},
paramtype = "light",
paramtype2 = "wallmounted",
light_source = 5,
groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1, mesecon_needs_receiver = 1},
drop = {items = {"scifi_nodes:digicode_off"}},
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mesecons = {
receptor = {
state = (has_mesecons and mesecon.state.on)
}
},
on_timer = toggle_digicode,
sounds = default.node_sound_glass_defaults(),
})
minetest.register_node("scifi_nodes:digicode_off", {
description = "Digicode",
tiles = {"scifi_nodes_digicode_off.png",},
inventory_image = "scifi_nodes_digicode_off.png",
wield_image = "scifi_nodes_digicode_off.png",
drawtype = "signlike",
sunlight_propagates = true,
buildable_to = false,
node_box = {type = "wallmounted",},
selection_box = {type = "wallmounted",},
paramtype = "light",
paramtype2 = "wallmounted",
groups = {cracky=1, oddly_breakable_by_hand=1, mesecon_needs_receiver = 1},
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mesecons = {
receptor = {
state = (has_mesecons and mesecon.state.off)
}
},
after_place_node = set_owner,
on_rightclick = show_digicode_formspec,
sounds = default.node_sound_glass_defaults(),
})
minetest.register_craft({
output = "scifi_nodes:digicode_off 2",
recipe = {{"mesecons_switch:mesecon_switch_off", "scifi_nodes:grey", ""}}
})