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MineClone2/mods/ITEMS/REDSTONE/mcl_observers/init.lua

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local rules_flat = {
{ x = 0, y = 0, z = -1 },
}
local get_rules_flat = function(node)
local rules = rules_flat
for i=1, node.param2 do
rules = mesecon.rotate_rules_left(rules)
end
return rules
end
local rules_down = {{ x = 0, y = 1, z = 0 }}
local rules_up = {{ x = 0, y = -1, z = 0 }}
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-- Scan the node in front of the observer
-- and update the observer state if needed.
-- TODO: Also scan metadata changes.
-- TODO: Ignore some node changes.
local observer_scan = function(pos, initialize)
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local node = minetest.get_node(pos)
local front
if node.name == "mcl_observers:observer_up_off" or node.name == "mcl_observers:observer_up_on" then
front = vector.add(pos, {x=0, y=1, z=0})
elseif node.name == "mcl_observers:observer_down_off" or node.name == "mcl_observers:observer_down_on" then
front = vector.add(pos, {x=0, y=-1, z=0})
else
front = vector.add(pos, minetest.facedir_to_dir(node.param2))
end
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local frontnode = minetest.get_node(front)
local meta = minetest.get_meta(pos)
local oldnode = meta:get_string("node_name")
local oldparam2 = meta:get_string("node_param2")
local meta_needs_updating = false
if oldnode ~= "" and not initialize then
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if not (frontnode.name == oldnode and frontnode.param2) then
-- Node state changed! Activate observer
if node.name == "mcl_observers:observer_off" then
minetest.set_node(pos, {name = "mcl_observers:observer_on", param2 = node.param2})
mesecon.receptor_on(pos)
elseif node.name == "mcl_observers:observer_down_off" then
minetest.set_node(pos, {name = "mcl_observers:observer_down_on"})
mesecon.receptor_on(pos)
elseif node.name == "mcl_observers:observer_up_off" then
minetest.set_node(pos, {name = "mcl_observers:observer_up_on"})
mesecon.receptor_on(pos)
end
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meta_needs_updating = true
end
else
meta_needs_updating = true
end
if meta_needs_updating then
meta:set_string("node_name", frontnode.name)
meta:set_string("node_param2", frontnode.param2)
end
return frontnode
end
-- Vertical orientation (CURRENTLY DISABLED)
local observer_orientate = function(pos, placer)
-- Currently, do nothing.
-- The vertical observers detect the node correctly, but they have problems with
-- transmitting the redstone signal vertically.
-- TODO: Re-enable orientation when vertical observers are done.
do return end
-- Not placed by player
if not placer then return end
-- Placer pitch in degrees
local pitch = placer:get_look_vertical() * (180 / math.pi)
local node = minetest.get_node(pos)
if pitch > 55 then -- player looking upwards
-- Observer looking downwards
minetest.set_node(pos, {name="mcl_observers:observer_down_off"})
elseif pitch < -55 then -- player looking downwards
-- Observer looking upwards
minetest.set_node(pos, {name="mcl_observers:observer_up_off"})
end
end
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mesecon.register_node("mcl_observers:observer",
{
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is_ground_content = false,
sounds = mcl_sounds.node_sound_stone_defaults(),
paramtype2 = "facedir",
-- TODO: Add to craft guide and creative inventory when it's useful
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groups = {pickaxey=1, material_stone=1, not_in_craft_guide=1, not_in_creative_inventory=1 },
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on_rotate = false,
_mcl_blast_resistance = 17.5,
_mcl_hardness = 3.5,
},
{
description = "Observer",
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tiles = {
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"mcl_observers_observer_top.png^[transformR180", "default_furnace_bottom.png",
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"mcl_observers_observer_side.png", "mcl_observers_observer_side.png",
"mcl_observers_observer_front.png", "mcl_observers_observer_back.png",
},
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mesecons = { receptor = {
state = mesecon.state.off,
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rules = get_rules_flat,
}},
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on_construct = function(pos)
observer_scan(pos, true)
end,
after_place_node = observer_orientate,
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},
{
_doc_items_create_entry = false,
tiles = {
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"mcl_observers_observer_top.png^[transformR180", "default_furnace_bottom.png",
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"mcl_observers_observer_side.png", "mcl_observers_observer_side.png",
"mcl_observers_observer_front.png", "mcl_observers_observer_back_lit.png",
},
mesecons = { receptor = {
state = mesecon.state.on,
rules = get_rules_flat,
}},
-- VERY quickly disable observer after construction
on_construct = function(pos)
local timer = minetest.get_node_timer(pos)
-- 1 redstone tick = 0.1 seconds
timer:start(0.1)
end,
on_timer = function(pos, elapsed)
local node = minetest.get_node(pos)
minetest.set_node(pos, {name = "mcl_observers:observer_off", param2 = node.param2})
mesecon.receptor_off(pos)
end,
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}
)
mesecon.register_node("mcl_observers:observer_down",
{
is_ground_content = false,
sounds = mcl_sounds.node_sound_stone_defaults(),
groups = {pickaxey=1, material_stone=1, not_in_creative_inventory=1 },
on_rotate = false,
_mcl_blast_resistance = 17.5,
_mcl_hardness = 3.5,
},
{
tiles = {
"mcl_observers_observer_back.png", "mcl_observers_observer_front.png",
"mcl_observers_observer_side.png^[transformR90", "mcl_observers_observer_side.png^[transformR90",
"mcl_observers_observer_top.png", "mcl_observers_observer_top.png",
},
mesecons = { receptor = {
state = mesecon.state.off,
rules = rules_down,
}},
on_construct = function(pos)
observer_scan(pos, true)
end,
},
{
_doc_items_create_entry = false,
tiles = {
"mcl_observers_observer_back_lit.png", "mcl_observers_observer_front.png",
"mcl_observers_observer_side.png^[transformR90", "mcl_observers_observer_side.png^[transformR90",
"mcl_observers_observer_top.png", "mcl_observers_observer_top.png",
},
mesecons = { receptor = {
state = mesecon.state.on,
rules = rules_down,
}},
-- VERY quickly disable observer after construction
on_construct = function(pos)
local timer = minetest.get_node_timer(pos)
-- 1 redstone tick = 0.1 seconds
timer:start(0.1)
end,
on_timer = function(pos, elapsed)
local node = minetest.get_node(pos)
minetest.set_node(pos, {name = "mcl_observers:observer_down_off", param2 = node.param2})
mesecon.receptor_off(pos)
end,
})
mesecon.register_node("mcl_observers:observer_up",
{
is_ground_content = false,
sounds = mcl_sounds.node_sound_stone_defaults(),
groups = {pickaxey=1, material_stone=1, not_in_creative_inventory=1 },
on_rotate = false,
_mcl_blast_resistance = 17.5,
_mcl_hardness = 3.5,
},
{
tiles = {
"mcl_observers_observer_front.png", "mcl_observers_observer_back.png",
"mcl_observers_observer_side.png^[transformR270", "mcl_observers_observer_side.png^[transformR270",
"mcl_observers_observer_top.png^[transformR180", "mcl_observers_observer_top.png^[transformR180",
},
mesecons = { receptor = {
state = mesecon.state.off,
rules = rules_up,
}},
on_construct = function(pos)
observer_scan(pos, true)
end,
},
{
_doc_items_create_entry = false,
tiles = {
"mcl_observers_observer_front.png", "mcl_observers_observer_back_lit.png",
"mcl_observers_observer_side.png^[transformR270", "mcl_observers_observer_side.png^[transformR270",
"mcl_observers_observer_top.png^[transformR180", "mcl_observers_observer_top.png^[transformR180",
},
mesecons = { receptor = {
state = mesecon.state.on,
rules = rules_up,
}},
-- VERY quickly disable observer after construction
on_construct = function(pos)
local timer = minetest.get_node_timer(pos)
-- 1 redstone tick = 0.1 seconds
timer:start(0.1)
end,
on_timer = function(pos, elapsed)
minetest.set_node(pos, {name = "mcl_observers:observer_up_off"})
mesecon.receptor_off(pos)
end,
})
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-- Regularily check the observer nodes.
-- TODO: This is rather slow and clunky. Find a more efficient way to do this.
minetest.register_abm({
nodenames = {"mcl_observers:observer_off", "mcl_observers:observer_down_off", "mcl_observers:observer_up_off"},
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interval = 1,
chance = 1,
action = function(pos, node)
observer_scan(pos)
end,
})
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minetest.register_craft({
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output = "mcl_observers:observer_off",
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recipe = {
{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble" },
{ "mcl_nether:quartz", "mesecons:redstone", "mesecons:redstone" },
{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble" },
}
})
minetest.register_craft({
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output = "mcl_observers:observer_off",
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recipe = {
{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble" },
{ "mesecons:redstone", "mesecons:redstone", "mcl_nether:quartz" },
{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble" },
}
})