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Add node detector, which works like the player detector but detects a…

… specific nodename (or any node except air) in front of it.
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Ekdohibs committed Jun 8, 2014
1 parent e589607 commit 99cb021f15358e03c797b79fdcf58a7a364a5ed0
@@ -108,3 +108,150 @@ minetest.register_abm(
end
end,
})

-- Node detector
-- Detects the node in front of it

local node_detector_make_formspec = function (pos)
local meta = minetest.get_meta(pos)
meta:set_string("formspec", "size[9,2.5]" ..
"field[0.3, 0;9,2;scanname;Name of node to scan for (empty for any):;${scanname}]"..
"field[0.3,1.5;4,2;digiline_channel;Digiline Channel (optional):;${digiline_channel}]"..
"button_exit[7,0.75;2,3;;Save]")
end

local node_detector_on_receive_fields = function(pos, formname, fields)
if not fields.scanname or not fields.digiline_channel then return end;

local meta = minetest.get_meta(pos)
meta:set_string("scanname", fields.scanname)
meta:set_string("digiline_channel", fields.digiline_channel)
node_detector_make_formspec(pos)
end

-- returns true if player was found, false if not
local node_detector_scan = function (pos)
local node = minetest.get_node(pos)
local frontpos = vector.subtract(pos, minetest.facedir_to_dir(node.param2))
local frontnode = minetest.get_node(frontpos)
local meta = minetest.get_meta(pos)
return (frontnode.name == meta:get_string("scanname")) or
(frontnode.name ~= "air" and frontnode.name ~= "ignore" and meta:get_string("scanname") == "")
end

-- set player name when receiving a digiline signal on a specific channel
node_detector_digiline = {
effector = {
action = function (pos, node, channel, msg)
local meta = minetest.get_meta(pos)
local active_channel = meta:get_string("digiline_channel")
if channel == active_channel then
meta:set_string("scanname", msg)
node_detector_make_formspec(pos)
end
end,
}
}

minetest.register_node("mesecons_detector:node_detector_off", {
tiles = {"default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "jeija_node_detector_off.png"},
paramtype = "light",
paramtype2 = "facedir",
walkable = true,
groups = {cracky=3},
description="Node Detector",
mesecons = {receptor = {
state = mesecon.state.off
}},
on_construct = node_detector_make_formspec,
on_receive_fields = node_detector_on_receive_fields,
after_place_node = function (pos, placer)
local placer_pos = placer:getpos()

--correct for the player's height
if placer:is_player() then placer_pos.y = placer_pos.y + 1.5 end

--correct for 6d facedir
if placer_pos then
local dir = {
x = pos.x - placer_pos.x,
y = pos.y - placer_pos.y,
z = pos.z - placer_pos.z
}
local node = minetest.get_node(pos)
node.param2 = minetest.dir_to_facedir(dir, true)
minetest.set_node(pos, node)
minetest.log("action", "real (6d) facedir: " .. node.param2)
end
end,
sounds = default.node_sound_stone_defaults(),
digiline = node_detector_digiline
})

minetest.register_node("mesecons_detector:node_detector_on", {
tiles = {"default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "default_steel_block.png", "jeija_node_detector_on.png"},
paramtype = "light",
paramtype2 = "facedir",
walkable = true,
groups = {cracky=3,not_in_creative_inventory=1},
drop = 'mesecons_detector:node_detector_off',
mesecons = {receptor = {
state = mesecon.state.on
}},
on_construct = node_detector_make_formspec,
on_receive_fields = node_detector_on_receive_fields,
after_place_node = function (pos, placer)
local placer_pos = placer:getpos()

--correct for the player's height
if placer:is_player() then placer_pos.y = placer_pos.y + 1.5 end

--correct for 6d facedir
if placer_pos then
local dir = {
x = pos.x - placer_pos.x,
y = pos.y - placer_pos.y,
z = pos.z - placer_pos.z
}
local node = minetest.get_node(pos)
node.param2 = minetest.dir_to_facedir(dir, true)
minetest.set_node(pos, node)
minetest.log("action", "real (6d) facedir: " .. node.param2)
end
end,
sounds = default.node_sound_stone_defaults(),
digiline = node_detector_digiline
})

minetest.register_craft({
output = 'mesecons_detector:node_detector_off',
recipe = {
{"default:steel_ingot", "group:mesecon_conductor_craftable", "default:steel_ingot"},
{"default:steel_ingot", "mesecons_luacontroller:luacontroller0000", "default:steel_ingot"},
{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
}
})

minetest.register_abm(
{nodenames = {"mesecons_detector:node_detector_off"},
interval = 1.0,
chance = 1,
action = function(pos, node)
if node_detector_scan(pos) then
minetest.swap_node(pos, {name = "mesecons_detector:node_detector_on", param2 = node.param2})
mesecon:receptor_on(pos)
end
end,
})

minetest.register_abm(
{nodenames = {"mesecons_detector:node_detector_on"},
interval = 1.0,
chance = 1,
action = function(pos, node)
if not node_detector_scan(pos) then
minetest.swap_node(pos, {name = "mesecons_detector:node_detector_off", param2 = node.param2})
mesecon:receptor_off(pos)
end
end,
})
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1 comment on commit 99cb021

@Jeija

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@Jeija Jeija commented on 99cb021 Jun 8, 2014

Looks nice! Does it work if you make node_detector_digiline local? Also, it would be great if you could make it so that one could send a digiline "GET" and the detector responds with the nodename in front of it. Unfortunately, I can't test this now and won't be able to for the next two weeks.

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