feat(子弹系统): 添加子弹追踪功能

在EntityBase.gd中添加BULLET_TRACE字段，并在BulletBase.gd中实现追踪逻辑。FieldStore.gd中新增BULLET_TRACE枚举及相关配置，支持百分比类型的追踪强度设置

scripts/Tools/FieldStore.gd

@@ -30,7 +30,8 @@ enum Entity {
 	ENERGY_REGENERATION,
 	DROPPED_ITEM_COLLECT_RADIUS,
 	BULLET_SPLIT,
-	BULLET_REFRACTION
+	BULLET_REFRACTION,
+	BULLET_TRACE
 }
 static var entityMap = {
 	Entity.MAX_HEALTH: "生命上限",
@@ -57,6 +58,7 @@ static var entityMap = {
 	Entity.DROPPED_ITEM_COLLECT_RADIUS: "掉落物拾取距离",
 	Entity.BULLET_SPLIT: "分裂",
 	Entity.BULLET_REFRACTION: "折射",
+	Entity.BULLET_TRACE: "追踪",
 }
 static var entityMapType = {
 	Entity.MAX_HEALTH: DataType.VALUE,
@@ -83,6 +85,7 @@ static var entityMapType = {
 	Entity.DROPPED_ITEM_COLLECT_RADIUS: DataType.VALUE,
 	Entity.BULLET_SPLIT: DataType.VALUE,
 	Entity.BULLET_REFRACTION: DataType.VALUE,
+	Entity.BULLET_TRACE: DataType.PERCENT,
 }
 static var entityMaxValueMap = {
 	Entity.CRIT_RATE: 0.8,
@@ -90,7 +93,8 @@ static var entityMaxValueMap = {
 	Entity.PENARATION_RESISTANCE: 0.5,
 	Entity.PRICE_REDUCTION: 0.4,
 	Entity.DROP_APPLE_RATE: 0.4,
-	Entity.FEED_COUNT_SHOW: 6
+	Entity.FEED_COUNT_SHOW: 6,
+	Entity.BULLET_TRACE: 1,
 }
 static var entityApplier = {
 	Entity.MAX_HEALTH: func(entity, value):