feat: 添加新武器彩虹旗和紫水晶簇，调整饲料属性和数值

refactor: 重构子弹生成逻辑，支持分裂和折射效果

fix: 修复掉落物拾取范围和碰撞检测问题

style: 优化UI显示，添加武器品质和类型标签

docs: 更新字段描述，调整部分饲料名称和分类

perf: 优化数学工具函数，添加随机数处理工具

test: 调整波次生成逻辑，添加新敌人类型

build: 添加新资源文件和相关导入配置

scripts/Structs/Feed.gd

@@ -7,6 +7,7 @@ signal selected(applied: bool)
 @export var avatarTexture: Texture2D = preload("res://icon.svg")
 @export var displayName: String = "未命名饲料"
 @export var quality: FeedName.Quality = FeedName.Quality.COMMON
+@export var topic: FeedName.Topic = FeedName.Topic.SURVIVAL
 @export var fields: Array[FieldStore.Entity] = []
 @export var fieldValues: Array[float] = []
 @export var costs: Array[ItemStore.ItemType] = []
@@ -60,6 +61,7 @@ func rebuildInfo():
 	avatarRect.texture = avatarTexture
 	nameLabel.displayName = displayName
 	nameLabel.quality = quality
+	nameLabel.topic = topic
 	for i in fieldsBox.get_children():
 		i.queue_free()
 	var noField = true

scripts/Structs/Weapon.gd

@@ -0,0 +1,87 @@
+@tool
+extends PanelContainer
+class_name Weapon
+
+signal selected(applied: bool)
+
+@export var avatarTexture: Texture2D = preload("res://icon.svg")
+@export var displayName: String = "未命名饲料"
+@export var quality: WeaponName.Quality = WeaponName.Quality.COMMON
+@export var typeTopic: WeaponName.TypeTopic = WeaponName.TypeTopic.IMPACT
+@export var costs: Array[ItemStore.ItemType] = []
+@export var costCounts: Array[int] = []
+@export var store: Dictionary = {
+	"atk": 10
+}
+@export var descriptionTemplate: String = "造成$atk点伤害。"
+@export var needEnergy: float = 0
+@export var cooldown: float = 100
+
+@onready var avatarRect: TextureRect = $"%avatar"
+@onready var nameLabel: WeaponName = $"%name"
+@onready var energyLabel: Label = $"%energy"
+@onready var descriptionLabel: RichTextLabel = $"%description"
+@onready var costsBox: GridContainer = $"%costs"
+@onready var selectButton: Button = $"%selectBtn"
+
+func _ready():
+	selectButton.pressed.connect(
+		func():
+			apply(UIState.player)
+	)
+	rebuildInfo()
+func _physics_process(_delta: float):
+	descriptionLabel.text = buildDescription()
+
+func allHad(entity: EntityBase) -> bool:
+	var allHave = true
+	for i in range(min(costs.size(), costCounts.size())):
+		var item = costs[i]
+		var count = costCounts[i] * multipiler()
+		if entity.inventory[item] < count:
+			allHave = false
+			break
+	return allHave
+func apply(entity: EntityBase):
+	var allHave = allHad(entity)
+	if allHave:
+		for i in range(min(costs.size(), costCounts.size())):
+			var item = costs[i]
+			var count = costCounts[i] * multipiler()
+			entity.inventory[item] -= count
+		hide()
+	selected.emit(allHave)
+	return allHave
+func multipiler() -> float:
+	if is_instance_valid(UIState.player):
+		return 1 - UIState.player.fields.get(FieldStore.Entity.PRICE_REDUCTION)
+	else:
+		return 1
+func rebuildInfo():
+	avatarRect.texture = avatarTexture
+	nameLabel.displayName = displayName
+	nameLabel.quality = quality
+	nameLabel.typeTopic = typeTopic
+	energyLabel.text = "%.1f" % needEnergy
+	for i in costsBox.get_children():
+		i.queue_free()
+	for i in range(min(costs.size(), costCounts.size())):
+		var cost = costs[i]
+		var count = costCounts[i]
+		var costShow: ItemShow = preload("res://components/UI/ItemShow.tscn").instantiate()
+		costShow.type = cost
+		costShow.count = int(count * multipiler())
+		costsBox.add_child(costShow)
+func buildDescription():
+	var result = descriptionTemplate
+	for key in store.keys():
+		result = result.replace("$" + key, "[color=cyan]%.1f[/color]" % readStore(key))
+	return result
+func readStore(key: String, default: Variant = null):
+	return store.get(key, default)
+
+# 抽象
+func update(_to: int, _origin: Dictionary, _entity: EntityBase):
+	pass
+func attack(_entity: EntityBase):
+	pass