90 lines
2.5 KiB
GDScript
90 lines
2.5 KiB
GDScript
class_name StrongBuffVisual
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extends Node2D
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const DEFAULT_FRAME_DIRECTORY := "res://assets/ui/strong_buff"
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@export var frame_directory := DEFAULT_FRAME_DIRECTORY
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@export var frames_per_second := 20.0
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@export var center_offset := Vector2(0.0, -38.0)
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@export var effect_scale := 0.18
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var _active := false
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var _frame_index := 0
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var _frame_elapsed := 0.0
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var _frames: Array[Texture2D] = []
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var _sprite: Sprite2D
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func _ready() -> void:
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z_index = 1
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_sprite = Sprite2D.new()
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_sprite.name = "StrongBuffEffect"
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_sprite.centered = true
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_sprite.position = center_offset
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_sprite.texture_filter = CanvasItem.TEXTURE_FILTER_NEAREST
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_sprite.visible = false
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add_child(_sprite)
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_load_frames()
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set_active(false)
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func _process(delta: float) -> void:
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if not _active or _frames.is_empty():
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return
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_frame_elapsed += delta
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var frame_duration := 1.0 / maxf(1.0, frames_per_second)
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while _frame_elapsed >= frame_duration:
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_frame_elapsed -= frame_duration
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_frame_index = (_frame_index + 1) % _frames.size()
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_sprite.texture = _frames[_frame_index]
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func set_active(active: bool) -> void:
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_active = active and not _frames.is_empty()
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visible = _active
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set_process(_active)
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if _sprite != null:
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_sprite.visible = _active
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_sprite.position = center_offset
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_sprite.scale = Vector2.ONE * effect_scale
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if _active and _sprite.texture == null and not _frames.is_empty():
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_sprite.texture = _frames[_frame_index]
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func is_active() -> bool:
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return _active
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func frame_count() -> int:
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return _frames.size()
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func current_effect_scale() -> float:
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return effect_scale
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func _load_frames() -> void:
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_frames.clear()
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var dir := DirAccess.open(frame_directory)
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if dir == null:
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return
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# 导出包内贴图在目录列表里显示为 xxx.png.import / xxx.png.remap；
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# 还原原名后 load() 才能命中。编辑器里原图与 .import 同时在列，需去重。
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var files := PackedStringArray()
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dir.list_dir_begin()
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var file_name := dir.get_next()
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while not file_name.is_empty():
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if not dir.current_is_dir():
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var resource_name := file_name.trim_suffix(".import").trim_suffix(".remap")
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if resource_name.ends_with(".png") and not files.has(resource_name):
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files.append(resource_name)
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file_name = dir.get_next()
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dir.list_dir_end()
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files.sort()
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for path_name: String in files:
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var texture := load("%s/%s" % [frame_directory, path_name]) as Texture2D
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if texture != null:
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_frames.append(texture)
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if not _frames.is_empty() and _sprite != null:
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_sprite.texture = _frames[0]
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