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Store gate inputs in param2 instead of metadata

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This commit is contained in:
Jude Melton-Houghton 2022-01-25 12:00:16 -05:00
parent 0a4a88b1b9
commit 1e5b485264
1 changed files with 30 additions and 5 deletions
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35
mesecons_gates/init.lua
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@ -42,11 +42,36 @@ local function update_gate(pos, node, link, newstate)
if gate.inputnumber == 1 then
set_gate(pos, node, gate.assess(newstate == "on"))
elseif gate.inputnumber == 2 then
local meta = minetest.get_meta(pos)
meta:set_int(link.name, newstate == "on" and 1 or 0)
local val1 = meta:get_int("input1") == 1
local val2 = meta:get_int("input2") == 1
-- Inputs are stored in param2. Bit 5 is always set.
-- input1 is bit 6 and input2 is bit 7.
local val1, val2
if node.param2 >= 32 then
-- Bit 5 is set, so param2 is in the proper format.
if link.name == "input1" then
val1 = newstate == "on"
val2 = node.param2 >= 128
else
val1 = node.param2 % 128 >= 64
val2 = newstate == "on"
end
else
-- Migrate old gates where the inputs are stored as metadata.
-- This also triggers for newly placed gates.
local meta = minetest.get_meta(pos)
if link.name == "input1" then
val1 = newstate == "on"
val2 = meta:get("input2") == "1"
else
val1 = meta:get("input1") == "1"
val2 = newstate == "on"
end
-- Set bit 5 so this won't happen again.
node.param2 = node.param2 + 32
-- Clear the metadata.
meta:set_string("input1", "")
meta:set_string("input2", "")
end
node.param2 = node.param2 % 64 + (val1 and 64 or 0) + (val2 and 128 or 0)
set_gate(pos, node, gate.assess(val1, val2))
end
end