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February 7, 2023 22:21
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A real-time timer for synchronizing events in Godot across multiple clients to within 1 second of each other, which for my use case was good enough. It's API is meant to be a drop-in replacement for the default Timer node. Additionally it solved the problem of Timers in Godot being effected by poor performance. On a slower computer that is being…
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| # A drop in replacement for the Timer class | |
| # This timer is completely framerate independent | |
| # It can also be given a unix time stamp instead of a duration | |
| # for when it should fire. This is useful for synchornizing events | |
| # across multiple clients such as in Multiplayer | |
| extends Node | |
| class_name WallClockTimer, 'res://utilities/wallclock_timer/icon.png' | |
| signal timeout | |
| const STOPPED := -1 | |
| export (int) var wait_time: int = 0 | |
| export (bool) var auto_start: bool = false | |
| export (bool) var one_shot: bool = true | |
| var start_time: int = STOPPED | |
| var end_time: int = STOPPED | |
| var time_left: float setget set_time_left, get_time_left | |
| func _ready(): | |
| if auto_start: | |
| start() | |
| func start(specific_end_time: int = STOPPED): | |
| start_time = OS.get_unix_time() | |
| if specific_end_time == STOPPED: | |
| end_time = start_time + wait_time | |
| else: | |
| end_time = specific_end_time | |
| func stop(): | |
| start_time = STOPPED | |
| func is_stopped() -> bool: | |
| return start_time == STOPPED | |
| func set_time_left(value): | |
| print('WallClockTimer: set_time_left is not allowed!') | |
| assert(false) # You can't set this! | |
| func get_time_left() -> float: | |
| return (end_time - OS.get_unix_time()) as float | |
| func _process(delta): | |
| if is_stopped(): | |
| return | |
| if OS.get_unix_time() >= end_time: | |
| stop() | |
| emit_signal('timeout') | |
| # If this is not a one-shot timer, restart it | |
| if not one_shot: | |
| start() |
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