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Store gate inputs in param2 instead of metadata
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commit
1e5b485264
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@ -42,11 +42,36 @@ local function update_gate(pos, node, link, newstate)
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if gate.inputnumber == 1 then
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if gate.inputnumber == 1 then
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set_gate(pos, node, gate.assess(newstate == "on"))
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set_gate(pos, node, gate.assess(newstate == "on"))
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elseif gate.inputnumber == 2 then
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elseif gate.inputnumber == 2 then
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local meta = minetest.get_meta(pos)
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-- Inputs are stored in param2. Bit 5 is always set.
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meta:set_int(link.name, newstate == "on" and 1 or 0)
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-- input1 is bit 6 and input2 is bit 7.
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local val1, val2
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local val1 = meta:get_int("input1") == 1
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if node.param2 >= 32 then
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local val2 = meta:get_int("input2") == 1
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-- Bit 5 is set, so param2 is in the proper format.
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if link.name == "input1" then
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val1 = newstate == "on"
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val2 = node.param2 >= 128
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else
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val1 = node.param2 % 128 >= 64
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val2 = newstate == "on"
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end
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else
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-- Migrate old gates where the inputs are stored as metadata.
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-- This also triggers for newly placed gates.
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local meta = minetest.get_meta(pos)
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if link.name == "input1" then
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val1 = newstate == "on"
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val2 = meta:get("input2") == "1"
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else
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val1 = meta:get("input1") == "1"
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val2 = newstate == "on"
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end
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-- Set bit 5 so this won't happen again.
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node.param2 = node.param2 + 32
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-- Clear the metadata.
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meta:set_string("input1", "")
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meta:set_string("input2", "")
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end
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node.param2 = node.param2 % 64 + (val1 and 64 or 0) + (val2 and 128 or 0)
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set_gate(pos, node, gate.assess(val1, val2))
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set_gate(pos, node, gate.assess(val1, val2))
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end
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end
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end
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end
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