56 lines
1.2 KiB
GDScript
56 lines
1.2 KiB
GDScript
extends RefCounted
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class_name ReedCameraShakePlayer
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var _preset: ReedCameraShakePreset
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var _time := 0.0
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var _strength := 0.0
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var _active := false
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var _noise := FastNoiseLite.new()
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var _noise_seed := randi()
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func play(preset: ReedCameraShakePreset) -> void:
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_preset = preset
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_time = 0.0
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_strength = 0.0
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_active = true
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_noise.seed = _noise_seed
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func stop() -> void:
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_active = false
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func is_active() -> bool:
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return _active
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func evaluate(delta: float) -> Vector2:
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if not _active or not _preset:
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return Vector2.ZERO
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_time += delta
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var total := _preset.fade_in + _preset.hold + _preset.fade_out
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if _time >= total:
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_active = false
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return Vector2.ZERO
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# ===== 强度曲线 =====
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if _time < _preset.fade_in:
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_strength = _time / _preset.fade_in
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elif _time < _preset.fade_in + _preset.hold:
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_strength = 1.0
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else:
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var t := (_time - _preset.fade_in - _preset.hold) / _preset.fade_out
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_strength = 1.0 - t
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# ===== Noise 偏移 =====
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var shake_t := _time * _preset.frequency
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var offset := Vector2(
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_noise.get_noise_1d(shake_t),
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_noise.get_noise_1d(shake_t + 1000)
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)
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return Vector2(
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offset.x * _preset.amplitude.x,
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offset.y * _preset.amplitude.y
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) * _strength
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