265 lines
8.6 KiB
Lua
265 lines
8.6 KiB
Lua
local S = minetest.get_translator("mcl_observers")
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local rules_flat = {
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{ x = 0, y = 0, z = -1, spread = true },
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}
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local get_rules_flat = function(node)
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local rules = rules_flat
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for i=1, node.param2 do
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rules = mesecon.rotate_rules_left(rules)
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end
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return rules
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end
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local rules_down = {{ x = 0, y = 1, z = 0, spread = true }}
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local rules_up = {{ x = 0, y = -1, z = 0, spread = true }}
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-- Scan the node in front of the observer
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-- and update the observer state if needed.
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-- TODO: Also scan metadata changes.
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-- TODO: Ignore some node changes.
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local observer_scan = function(pos, initialize)
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local node = minetest.get_node(pos)
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local front
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if node.name == "mcl_observers:observer_up_off" or node.name == "mcl_observers:observer_up_on" then
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front = vector.add(pos, {x=0, y=1, z=0})
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elseif node.name == "mcl_observers:observer_down_off" or node.name == "mcl_observers:observer_down_on" then
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front = vector.add(pos, {x=0, y=-1, z=0})
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else
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front = vector.add(pos, minetest.facedir_to_dir(node.param2))
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end
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local frontnode = minetest.get_node(front)
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local meta = minetest.get_meta(pos)
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local oldnode = meta:get_string("node_name")
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local oldparam2 = meta:get_string("node_param2")
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local meta_needs_updating = false
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if oldnode ~= "" and not initialize then
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if not (frontnode.name == oldnode and frontnode.param2) then
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-- Node state changed! Activate observer
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if node.name == "mcl_observers:observer_off" then
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minetest.set_node(pos, {name = "mcl_observers:observer_on", param2 = node.param2})
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mesecon.receptor_on(pos, get_rules_flat(node))
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elseif node.name == "mcl_observers:observer_down_off" then
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minetest.set_node(pos, {name = "mcl_observers:observer_down_on"})
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mesecon.receptor_on(pos, rules_down)
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elseif node.name == "mcl_observers:observer_up_off" then
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minetest.set_node(pos, {name = "mcl_observers:observer_up_on"})
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mesecon.receptor_on(pos, rules_up)
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end
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meta_needs_updating = true
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end
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else
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meta_needs_updating = true
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end
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if meta_needs_updating then
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meta:set_string("node_name", frontnode.name)
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meta:set_string("node_param2", frontnode.param2)
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end
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return frontnode
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end
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-- Vertical orientation (CURRENTLY DISABLED)
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local observer_orientate = function(pos, placer)
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-- Not placed by player
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if not placer then return end
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-- Placer pitch in degrees
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local pitch = placer:get_look_vertical() * (180 / math.pi)
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local node = minetest.get_node(pos)
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if pitch > 55 then -- player looking upwards
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-- Observer looking downwards
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minetest.set_node(pos, {name="mcl_observers:observer_down_off"})
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elseif pitch < -55 then -- player looking downwards
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-- Observer looking upwards
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minetest.set_node(pos, {name="mcl_observers:observer_up_off"})
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end
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end
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mesecon.register_node("mcl_observers:observer",
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{
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is_ground_content = false,
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sounds = mcl_sounds.node_sound_stone_defaults(),
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paramtype2 = "facedir",
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on_rotate = false,
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_mcl_blast_resistance = 3.5,
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_mcl_hardness = 3.5,
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},
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{
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description = S("Observer"),
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_tt_help = S("Emits redstone pulse when block in front changes"),
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_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",
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"mcl_observers_observer_front.png", "mcl_observers_observer_back.png",
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},
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mesecons = { receptor = {
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state = mesecon.state.off,
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rules = get_rules_flat,
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}},
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on_construct = function(pos)
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observer_scan(pos, true)
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end,
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after_place_node = observer_orientate,
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},
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{
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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",
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"mcl_observers_observer_front.png", "mcl_observers_observer_back_lit.png",
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},
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mesecons = { receptor = {
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state = mesecon.state.on,
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rules = get_rules_flat,
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}},
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-- VERY quickly disable observer after construction
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on_construct = function(pos)
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local timer = minetest.get_node_timer(pos)
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-- 1 redstone tick = 0.1 seconds
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timer:start(0.1)
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end,
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on_timer = function(pos, elapsed)
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local node = minetest.get_node(pos)
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minetest.set_node(pos, {name = "mcl_observers:observer_off", param2 = node.param2})
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mesecon.receptor_off(pos, get_rules_flat(node))
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end,
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}
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)
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mesecon.register_node("mcl_observers:observer_down",
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{
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is_ground_content = false,
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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 },
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on_rotate = false,
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_mcl_blast_resistance = 3.5,
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_mcl_hardness = 3.5,
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drop = "mcl_observers:observer_off",
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},
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{
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tiles = {
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"mcl_observers_observer_back.png", "mcl_observers_observer_front.png",
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"mcl_observers_observer_side.png^[transformR90", "mcl_observers_observer_side.png^[transformR90",
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"mcl_observers_observer_top.png", "mcl_observers_observer_top.png",
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},
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mesecons = { receptor = {
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state = mesecon.state.off,
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rules = rules_down,
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}},
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on_construct = function(pos)
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observer_scan(pos, true)
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end,
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},
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{
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_doc_items_create_entry = false,
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tiles = {
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"mcl_observers_observer_back_lit.png", "mcl_observers_observer_front.png",
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"mcl_observers_observer_side.png^[transformR90", "mcl_observers_observer_side.png^[transformR90",
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"mcl_observers_observer_top.png", "mcl_observers_observer_top.png",
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},
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mesecons = { receptor = {
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state = mesecon.state.on,
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rules = rules_down,
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}},
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-- VERY quickly disable observer after construction
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on_construct = function(pos)
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local timer = minetest.get_node_timer(pos)
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-- 1 redstone tick = 0.1 seconds
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timer:start(0.1)
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end,
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on_timer = function(pos, elapsed)
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local node = minetest.get_node(pos)
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minetest.set_node(pos, {name = "mcl_observers:observer_down_off", param2 = node.param2})
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mesecon.receptor_off(pos, rules_down)
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end,
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})
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mesecon.register_node("mcl_observers:observer_up",
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{
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is_ground_content = false,
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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 },
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on_rotate = false,
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_mcl_blast_resistance = 3.5,
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_mcl_hardness = 3.5,
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drop = "mcl_observers:observer_off",
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},
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{
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tiles = {
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"mcl_observers_observer_front.png", "mcl_observers_observer_back.png",
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"mcl_observers_observer_side.png^[transformR270", "mcl_observers_observer_side.png^[transformR270",
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"mcl_observers_observer_top.png^[transformR180", "mcl_observers_observer_top.png^[transformR180",
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},
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mesecons = { receptor = {
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state = mesecon.state.off,
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rules = rules_up,
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}},
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on_construct = function(pos)
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observer_scan(pos, true)
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end,
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},
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{
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_doc_items_create_entry = false,
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tiles = {
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"mcl_observers_observer_front.png", "mcl_observers_observer_back_lit.png",
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"mcl_observers_observer_side.png^[transformR270", "mcl_observers_observer_side.png^[transformR270",
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"mcl_observers_observer_top.png^[transformR180", "mcl_observers_observer_top.png^[transformR180",
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},
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mesecons = { receptor = {
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state = mesecon.state.on,
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rules = rules_up,
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}},
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-- VERY quickly disable observer after construction
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on_construct = function(pos)
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local timer = minetest.get_node_timer(pos)
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-- 1 redstone tick = 0.1 seconds
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timer:start(0.1)
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end,
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on_timer = function(pos, elapsed)
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minetest.set_node(pos, {name = "mcl_observers:observer_up_off"})
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mesecon.receptor_off(pos, rules_up)
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end,
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})
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-- Regularily check the observer nodes.
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-- TODO: This is rather slow and clunky. Find a more efficient way to do this.
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minetest.register_abm({
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nodenames = {"mcl_observers:observer_off", "mcl_observers:observer_down_off", "mcl_observers:observer_up_off"},
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interval = 1,
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chance = 1,
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action = function(pos, node)
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observer_scan(pos)
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end,
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})
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minetest.register_craft({
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output = "mcl_observers:observer_off",
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recipe = {
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{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble" },
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{ "mcl_nether:quartz", "mesecons:redstone", "mesecons:redstone" },
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{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble" },
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}
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})
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minetest.register_craft({
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output = "mcl_observers:observer_off",
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recipe = {
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{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble" },
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{ "mesecons:redstone", "mesecons:redstone", "mcl_nether:quartz" },
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{ "mcl_core:cobble", "mcl_core:cobble", "mcl_core:cobble" },
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}
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})
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