feat: 重构角色和子弹系统，添加伤害标签和Boss状态条

scripts/Tools/FieldStore.gd

@@ -7,4 +7,25 @@ enum Entity {
 	ATTACK_SPEED,
 	CRIT_RATE,
 	CRIT_DAMAGE,
+	PENERATE
+}
+static var entityMap = {
+	Entity.MAX_HEALTH: "最大生命值",
+	Entity.DAMAGE_MULTIPILER: "伤害倍率",
+	Entity.MOVEMENT_SPEED: "移动速度",
+	Entity.ATTACK_SPEED: "攻击速度",
+	Entity.CRIT_RATE: "暴击率",
+	Entity.CRIT_DAMAGE: "暴击伤害",
+	Entity.PENERATE: "穿透"
+}
+
+enum Bullet {
+	SPEED,
+	DAMAGE,
+	PENERATE
+}
+static var bulletMap = {
+	Bullet.SPEED: "速度",
+	Bullet.DAMAGE: "伤害",
+	Bullet.PENERATE: "穿透"
 }

scripts/Tools/GameRule.gd

@@ -1,4 +1,6 @@
 class_name GameRule
 
 static var allowFriendlyFire: bool = false # 是否允许友军伤害
-static var bulletSpeedMultiplier: float = 1 # 子弹速度倍率
+static var bulletSpeedMultiplier: float = 1 # 子弹速度倍率
+static var damageOffset: float = 0.2 # 伤害随机浮动比例，默认20%，即10的基础伤害会应用为8~12
+static var damageLabelSpawnOffset: float = 10 # 伤害标签生成位置的随机偏移

scripts/Tools/MathTool.gd

@@ -0,0 +1,9 @@
+class_name MathTool
+
+static func rate(value: float):
+	return randf() < value
+static func randv2_range(offset: float):
+	return Vector2(
+		randf_range(-offset, offset),
+		randf_range(-offset, offset)
+	)