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

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local S = minetest.get_translator("mcl_observers")
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local rules_flat = {
{ x = 0, y = 0, z = -1, spread = true },
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}
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, spread = true }}
local rules_up = {{ x = 0, y = -1, z = 0, spread = true }}
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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, get_rules_flat(node))
elseif node.name == "mcl_observers:observer_down_off" then
minetest.set_node(pos, {name = "mcl_observers:observer_down_on"})
mesecon.receptor_on(pos, rules_down)
elseif node.name == "mcl_observers:observer_up_off" then
minetest.set_node(pos, {name = "mcl_observers:observer_up_on"})
mesecon.receptor_on(pos, rules_up)
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)
-- 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",
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on_rotate = false,
_mcl_blast_resistance = 3.5,
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_mcl_hardness = 3.5,
},
{
description = S("Observer"),
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_tt_help = S("Emits redstone pulse when block in front changes"),
_doc_items_longdesc = S("An observer is a redstone component which observes the block in front of it and sends a very short redstone pulse whenever this block changes."),
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_doc_items_usagehelp = S("Place the observer directly in front of the block you want to observe with the “face” looking at the block. The arrow points to the side of the output, which is at the opposite side of the “face”. You can place your redstone dust or any other component here."),
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groups = {pickaxey=1, material_stone=1, not_opaque=1, },
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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,
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groups = {pickaxey=1, material_stone=1, not_opaque=1, not_in_creative_inventory=1 },
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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_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, get_rules_flat(node))
end,
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}
)
mesecon.register_node("mcl_observers:observer_down",
{
is_ground_content = false,
sounds = mcl_sounds.node_sound_stone_defaults(),
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groups = {pickaxey=1, material_stone=1, not_opaque=1, not_in_creative_inventory=1 },
on_rotate = false,
_mcl_blast_resistance = 3.5,
_mcl_hardness = 3.5,
drop = "mcl_observers:observer_off",
},
{
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, rules_down)
end,
})
mesecon.register_node("mcl_observers:observer_up",
{
is_ground_content = false,
sounds = mcl_sounds.node_sound_stone_defaults(),
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groups = {pickaxey=1, material_stone=1, not_opaque=1, not_in_creative_inventory=1 },
on_rotate = false,
_mcl_blast_resistance = 3.5,
_mcl_hardness = 3.5,
drop = "mcl_observers:observer_off",
},
{
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, rules_up)
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" },
}
})