优化项目架构

SproutFarm-Frontend/GlobalScript/Toast.gd

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+# Toast.gd - 合并的Toast系统
+extends Node
+
+# Toast节点缓存
+var toast_container: Control
+
+func _ready():
+	# 延迟创建Toast容器，避免在节点初始化期间添加子节点的冲突
+	setup_toast_container.call_deferred()
+
+func setup_toast_container():
+	# 防止重复创建
+	if toast_container and is_instance_valid(toast_container):
+		return
+	
+	# 创建一个CanvasLayer来确保Toast始终在最顶层
+	var canvas_layer = CanvasLayer.new()
+	canvas_layer.name = "ToastCanvasLayer"
+	canvas_layer.layer = 100  # 设置一个很高的层级值
+	
+	# 创建一个容器来放置所有Toast
+	toast_container = Control.new()
+	toast_container.name = "ToastContainer"
+	toast_container.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
+	toast_container.mouse_filter = Control.MOUSE_FILTER_IGNORE
+	
+	# 将容器添加到CanvasLayer中
+	canvas_layer.add_child(toast_container)
+	
+	# 尝试添加到main/UI节点，如果失败则添加到根节点
+	var ui_node = get_node_or_null("/root/main/UI")
+	if ui_node:
+		ui_node.add_child.call_deferred(canvas_layer)
+		print("Toast容器已添加到 main/UI 节点")
+	else:
+		# 如果没有UI节点，直接添加到根节点
+		get_tree().root.add_child.call_deferred(canvas_layer)
+		print("Toast容器已添加到根节点")
+
+
+func show(text: String, 
+		color: Color = Color.WHITE,
+		duration: float = 2.0,
+		fade_duration: float = 0.5) -> void:
+	
+	# 确保容器存在且有效
+	if not toast_container or not is_instance_valid(toast_container) or not toast_container.get_parent():
+		setup_toast_container.call_deferred()
+		# 等待容器设置完成
+		await get_tree().process_frame
+		await get_tree().process_frame  # 额外等待一帧确保完成
+	
+	# 再次检查容器是否有效
+	if not toast_container or not is_instance_valid(toast_container):
+		print("警告：Toast容器初始化失败，无法显示Toast")
+		return
+	
+	# 创建Toast UI
+	var toast_panel = create_toast_ui(text, color)
+	toast_container.add_child(toast_panel)
+	
+	# 显示动画和自动消失
+	show_toast_animation(toast_panel, duration, fade_duration)
+
+func create_toast_ui(text: String, color: Color) -> PanelContainer:
+	# 创建主容器
+	var panel = PanelContainer.new()
+	panel.name = "Toast_" + str(Time.get_ticks_msec())
+	
+	# 设置样式
+	var style_box = StyleBoxFlat.new()
+	style_box.bg_color = Color(0, 0, 0, 0.8)  # 半透明黑色背景
+	style_box.corner_radius_top_left = 8
+	style_box.corner_radius_top_right = 8
+	style_box.corner_radius_bottom_left = 8
+	style_box.corner_radius_bottom_right = 8
+	style_box.content_margin_top = 12
+	style_box.content_margin_bottom = 12
+	style_box.content_margin_left = 16
+	style_box.content_margin_right = 16
+	panel.add_theme_stylebox_override("panel", style_box)
+	
+	# 创建文本标签
+	var label = Label.new()
+	label.text = text
+	label.modulate = color
+	label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
+	label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
+	
+	# 设置字体大小
+	label.add_theme_font_size_override("font_size", 16)
+	
+	panel.add_child(label)
+	
+	# 定位Toast（屏幕中央偏下）
+	position_toast(panel)
+	
+	return panel
+
+func position_toast(toast_panel: PanelContainer):
+	# 设置位置为屏幕中央偏下
+	toast_panel.set_anchors_and_offsets_preset(Control.PRESET_CENTER)
+	toast_panel.position.y += 100  # 向下偏移
+	
+	# 调整现有Toast的位置，避免重叠
+	var existing_toasts = []
+	for child in toast_container.get_children():
+		if child != toast_panel and child is PanelContainer:
+			existing_toasts.append(child)
+	
+	# 向上堆叠
+	for i in range(existing_toasts.size()):
+		var existing_toast = existing_toasts[existing_toasts.size() - 1 - i]
+		var tween = create_tween()
+		tween.tween_property(existing_toast, "position:y", 
+			existing_toast.position.y - 60, 0.3)
+
+func show_toast_animation(toast_panel: PanelContainer, duration: float, fade_duration: float):
+	# 初始状态：完全透明并稍微向上
+	toast_panel.modulate.a = 0.0
+	toast_panel.position.y += 20
+	
+	# 淡入动画
+	var fade_in_tween = create_tween()
+	fade_in_tween.parallel().tween_property(toast_panel, "modulate:a", 1.0, 0.3)
+	fade_in_tween.parallel().tween_property(toast_panel, "position:y", 
+		toast_panel.position.y - 20, 0.3)
+	fade_in_tween.set_ease(Tween.EASE_OUT)
+	
+	# 等待显示时间
+	await get_tree().create_timer(duration).timeout
+	
+	# 淡出动画
+	var fade_out_tween = create_tween()
+	fade_out_tween.tween_property(toast_panel, "modulate:a", 0.0, fade_duration)
+	await fade_out_tween.finished
+	
+	# 移除节点
+	toast_panel.queue_free()
+
+# 便捷方法
+func show_success(text: String, duration: float = 2.0):
+	show(text, Color.GREEN, duration)
+
+func show_error(text: String, duration: float = 3.0):
+	show(text, Color.RED, duration)
+
+func show_warning(text: String, duration: float = 2.5):
+	show(text, Color.YELLOW, duration)
+
+func show_info(text: String, duration: float = 2.0):
+	show(text, Color.CYAN, duration)