81 lines
1.5 KiB
GDScript
81 lines
1.5 KiB
GDScript
class_name CPUVFXTemplate extends CPUParticles2D
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## =========================
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## 播放模式
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## =========================
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enum PlayMode {
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##播放一次
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ONLY_ONCE,
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##永久播放
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INFINITE,
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##播放固定次数
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FIXED_TIMES
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}
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##可选择的播放模式
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@export var play_mode: PlayMode = PlayMode.ONLY_ONCE
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## 仅在 FIXED_TIMES 模式下生效
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@export var fixed_times: int = 1
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## =========================
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## 内部状态
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## =========================
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var _played_times: int = 0
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var _life_timer: float = 0.0
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var _playing: bool = false
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## =========================
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## 生命周期
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## =========================
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func _ready() -> void:
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_play()
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func _process(delta: float) -> void:
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if not _playing:
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return
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match play_mode:
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PlayMode.ONLY_ONCE:
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_update_only_once(delta)
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PlayMode.FIXED_TIMES:
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_update_fixed_times(delta)
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PlayMode.INFINITE:
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pass # 什么都不用做
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## =========================
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## 播放控制
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## =========================
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func _play() -> void:
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emitting = true
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_playing = true
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_life_timer = 0.0
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_played_times = 0
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func stop_and_free() -> void:
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emitting = false
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queue_free()
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## =========================
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## 模式逻辑
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## =========================
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func _update_only_once(delta: float) -> void:
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_life_timer += delta
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if _life_timer >= lifetime:
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stop_and_free()
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func _update_fixed_times(delta: float) -> void:
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_life_timer += delta
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if _life_timer >= lifetime:
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_played_times += 1
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_life_timer = 0.0
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if _played_times >= fixed_times:
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stop_and_free()
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