2019-05-21 01:05:53 +03:00
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# Power Distribution API
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The module power supports 3 kinds of devices:
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- Generators: Provide power, can be turned on/off
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- Consumers: Need power, like machines or lamps, can be turned on/off
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2019-06-16 22:18:22 +03:00
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- Akkus: Can provide stored power, combination of generator and consumer
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2019-05-21 01:05:53 +03:00
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### Possible connection sides
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```
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U(p) B(ack)
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| /
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| /
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+--|-----+
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/ o /|
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+--------+ |
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L(eft) ----| |o---- R(ight)
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| o | +
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| / |/
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+--/-----+
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/ |
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F(ront) |
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D(own)
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```
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All 3 kinds of nodes use the same registration function to enrich the nodes functionality for power distribution.
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techage.power.register_nodes(names, definition)
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-- names is a list of node names
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-- definition is a table according to:
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{
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conn_sides = <list>, -- allowed connection sides for power cables
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-- one or several of {"L", "R", "U", "D", "F", "B"}
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power_network = <tubelib2-instance>,
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}
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2019-06-16 22:18:22 +03:00
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tbd..........
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2019-05-21 01:05:53 +03:00
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techage.power.power_distribution(pos)
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-- Trigger the recalculation or the power distribution in case of
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-- a turn on/off request
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techage.power.formspec_power_bar(max_power, current_power)
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-- returns the formspec PGN with a bar according the the ratio `current_power/max_power`
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techage.power.formspec_load_bar(charging)
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-- returns the formspec PGN with the charging/uncharging symbol
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-- charging can be:
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-- true => charging
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-- false => uncharging
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-- nil => turned off
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### Internas
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The function `techage.power.register_nodes`:
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- adds a wrapper to `after_place_node` (needed to maintain tubelib2 data base)
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- adds a wrapper to `after_dig_node` (needed to maintain tubelib2 data base)
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- adds the function `after_tube_update` (needed to maintain tubelib2 data base)
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- adds the table `power` to the node definition with the provided attributes
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- adds `power_dirs` to the node meta table with the `conn_sides` information converted to node specific dirs
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- adds `mem.connections` for the available power connections with consideration of valid `power_dirs`
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