feat(武器系统): 为BigLaser武器添加执行伤害和升华选项

- 在ObstacleBase和EntityBase中添加getHealthPercent方法用于获取生命值百分比
- 修改bulletHit方法支持伤害覆盖参数
- 为BigLaser武器添加5个升华选项，包括临界斩杀效果
- 实现damageOverride方法根据目标生命值动态调整伤害
- 修复store数值可能为负数的问题

scripts/Statemachine/BulletBase.gd

@@ -141,10 +141,10 @@ func setupCuttable(cutSpeed: float):
 	)
 func getDamage():
 	return baseDamage * damageMultipliers[usingDamageMultiplier]
-func calculateDamage(crit: bool):
+func calculateDamage(crit: bool, entity: Variant):
 	var baseDmg = getDamage() * launcher.fields.get(FieldStore.Entity.DAMAGE_MULTIPILER) * randf_range(1 - GameRule.damageOffset, 1 + GameRule.damageOffset)
 	var damage = baseDmg + baseDmg * int(crit) * launcher.fields.get(FieldStore.Entity.CRIT_DAMAGE)
-	return damage
+	return damageOverride(damage, entity)
 func determineCrit():
 	return MathTool.rate(launcher.fields.get(FieldStore.Entity.CRIT_RATE) + GameRule.critRateInfluenceByLuckValue * launcher.fields[FieldStore.Entity.LUCK_VALUE])
 func hitEntity(target: Node):
@@ -161,7 +161,7 @@ func hitObstacle(target: Node):
 		var obstacle = target as ObstacleBase
 		if is_instance_valid(obstacle.launcher):
 			if not BulletTool.canDamage(self , obstacle.launcher): return
-		obstacle.takeDamage(calculateDamage(determineCrit()))
+		obstacle.takeDamage(calculateDamage(determineCrit(), target))
 		if MathTool.rate(fullPenerate() - obstacle.penerateResistance):
 			baseDamage *= 1.0 - penerateDamageReduction
 		else:
@@ -257,6 +257,8 @@ func refract(newBullet: BulletBase, _entity: EntityBase, _index: int, _total: in
 	return newBullet
 func hitBullet(_bullet: BulletBase):
 	pass
+func damageOverride(origin: float, _something: Variant):
+	return origin
 
 static func generate(
 		bullet: PackedScene,