35 lines
775 B
GDScript
35 lines
775 B
GDScript
extends Node
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const END_VALUE = 1
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signal unfreeze
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var is_active = false
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var time_start
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var duration_ms
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var start_value
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func start(duration = 1, strength = 0.9):
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time_start = OS.get_ticks_msec()
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duration_ms = duration * 1000
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start_value = 1 - strength
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Engine.time_scale = start_value
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is_active = true
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func _process(delta):
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if is_active:
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var current_time = OS.get_ticks_msec() - time_start
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var value = circl_ease_in(current_time, start_value, END_VALUE, duration_ms)
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if current_time >= duration_ms:
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is_active = false
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value = END_VALUE
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emit_signal('unfreeze')
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Engine.time_scale = value
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func circl_ease_in(t, b, c, d):
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t /=d
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return -c * (sqrt(1 - t * t) - 1) + b
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