fix(Bullets/MagicMissle): 修复魔法导弹伤害计算问题

修正当魔法导弹未加速时未造成伤害的问题，并优化销毁条件判断

scripts/Contents/Bullets/MagicMissle.gd

@@ -12,14 +12,16 @@ func ai():
 			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 baseDamage < 1:
-			tryDestroy()
+	elif speed < 1 || 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 !accelerating:
+		entity.takeDamage(baseDamage, true)
 	if powerScale > 0 && accelerating && roundBullets.count(self ) > 0:
 		for i in randi_range(1, powerScale):
 			for bullet in BulletBase.generate(