feat(武器): 为乾坤剑添加弹反机制和伤害比例

增加子弹弹反概率和伤害比例属性
修改武器描述以反映新机制
更新子弹碰撞逻辑实现弹反或格挡

scripts/Contents/Weapons/Tree.gd

@@ -5,6 +5,7 @@ func update(to: int, origin: Dictionary, _entity: EntityBase):
 	origin["atk"] += 5 * to * soulLevel
 	origin["count"] += 1 * (soulLevel - 1)
 	origin["max"] += 2 * (soulLevel - 1)
+	origin["rate"] += 0.15 * (soulLevel - 1)
 	return origin
 func attack(entity: EntityBase):
 	for bullet in BulletBase.generate(
@@ -17,4 +18,5 @@ func attack(entity: EntityBase):
 			bullet.atk = readStore("atk")
 			bullet.maxParryTimes = readStore("count")
 			bullet.maxBallCount = readStore("max")
+			bullet.reflectRate = readStore("rate")
 	return true