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Implement basic node scan of observers

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This commit is contained in:
Wuzzy 2018-01-10 19:30:30 +01:00
parent 85c40daf8a
commit d900279e1d
1 changed files with 44 additions and 2 deletions
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46
mods/ITEMS/REDSTONE/mcl_observers/init.lua
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@ -9,13 +9,42 @@ local get_rules_flat = function(node)
return rules
end
-- 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)
local node = minetest.get_node(pos)
local front = vector.add(pos, minetest.facedir_to_dir(node.param2))
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 ~= "" then
if not (frontnode.name == oldnode and frontnode.param2) then
-- Node state changed! Activate observer
minetest.set_node(pos, {name = "mcl_observers:observer_on", param2 = node.param2})
mesecon.receptor_on(pos)
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
mesecon.register_node("mcl_observers:observer",
{
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
groups = {pickaxey=1, not_in_craft_guide=1, not_in_creative_inventory=1 },
groups = {pickaxey=1, material_stone=1, not_in_craft_guide=1, not_in_creative_inventory=1 },
on_rotate = false,
_mcl_blast_resistance = 17.5,
_mcl_hardness = 3.5,
@ -27,11 +56,13 @@ mesecon.register_node("mcl_observers:observer",
"mcl_observers_observer_side.png", "mcl_observers_observer_side.png",
"mcl_observers_observer_front.png", "mcl_observers_observer_back.png",
},
-- TODO: Detect node and state changes
mesecons = { receptor = {
state = mesecon.state.off,
rules = get_rules_flat,
}},
on_construct = function(pos)
observer_scan(pos)
end,
-- DEBUG code to manually turn on an observer by rightclick.
-- TODO: Remove this when observers are complete.
@ -66,6 +97,17 @@ mesecon.register_node("mcl_observers:observer",
}
)
-- 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"},
interval = 1,
chance = 1,
action = function(pos, node)
observer_scan(pos)
end,
})
minetest.register_craft({
output = "mcl_observers:observer_off",