fix(MagicMissle): 修复魔法导弹加速逻辑和伤害传递问题

调整加速条件判断，确保只有存在子弹时才加速
修正子弹销毁条件为基于基础伤害值
修复子弹伤害传递问题，确保基础伤害正确传递给分裂子弹
优化场景结构，调整粒子效果和碰撞体位置

scripts/Contents/Bullets/MagicMissle.gd

@@ -8,13 +8,16 @@ var roundBullets: Array[MagicMissleBullet]
 
 func ai():
 	if accelerating:
+		if roundBullets.count(self ) < 1:
+			accelerating = false
 		rotation = lerp_angle(rotation, position.angle_to_point(get_global_mouse_position()), 0.1)
 		speedV2 += (get_global_mouse_position() - position).normalized() * 1
-	elif speed < 1:
-		tryDestroy()
+	elif baseDamage < 1:
+			tryDestroy()
 	speedV2 *= 0.995
 	speed = speedV2.length()
 	PresetBulletAI.forward(self , speedV2.angle())
+	texture.rotation += deg_to_rad(sqrt(speed))
 
 func succeedToHit(_dmg: float, entity: EntityBase):
 	if powerScale > 0 && accelerating && roundBullets.count(self ) > 0:
@@ -27,8 +30,9 @@ func succeedToHit(_dmg: float, entity: EntityBase):
 			):
 				if bullet is MagicMissleBullet:
 					bullet.position += Vector2.from_angle(bullet.rotation) * 100
-					bullet.speedV2 += Vector2.from_angle(bullet.rotation) * 30
+					bullet.speedV2 += Vector2.from_angle(bullet.rotation) * 20
 					bullet.roundBullets = roundBullets
 					bullet.powerScale = powerScale - 1
+					bullet.baseDamage = baseDamage
 					roundBullets.append(bullet)
 		powerScale = 0