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S.P.L.U.R.T-Station-13/code/modules/wiremod/core/variable.dm
2021-10-28 12:51:31 +08:00

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/**
* A circuit variable that holds the name, the datatype and the colour of the variable (taken from the datatype).
*
* Used in integrated circuits for setter and getter circuit components.
*/
/datum/circuit_variable
/// The display name of the circuit variable
var/name
/// The datatype of the circuit variable. Used by the setter and getter circuit components
var/datatype
/// The colour that appears in the UI. The value is set to the datatype's matching colour
var/color
/// The current value held by the variable.
var/value
/// The components that are currently listening. Triggers them when the value is updated.
var/list/obj/item/circuit_component/listeners
/datum/circuit_variable/New(name, datatype)
. = ..()
src.name = name
src.datatype = datatype
var/datum/circuit_datatype/circuit_datatype = GLOB.circuit_datatypes[datatype]
src.listeners = list()
src.color = circuit_datatype.color
/datum/circuit_variable/Destroy(force, ...)
listeners = null
return ..()
/// Sets the value of the circuit component and triggers the appropriate listeners
/datum/circuit_variable/proc/set_value(new_value)
value = new_value
for(var/obj/item/circuit_component/component as anything in listeners)
TRIGGER_CIRCUIT_COMPONENT(component, null)
/// Adds a listener to receive inputs when the variable has a value that is set.
/datum/circuit_variable/proc/add_listener(obj/item/circuit_component/to_add)
listeners += to_add
/// Removes a listener to receive inputs when the variable has a value that is set. Listener will usually clean themselves up
/datum/circuit_variable/proc/remove_listener(obj/item/circuit_component/to_remove)
listeners -= to_remove