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'''Stopper''' is the common name for objects in the ''Phys_FloorStopper '' [[group]]. It is a type of physical floor and is only effective for entities (including most [[moduleobject]]s and [[prop ball]]s) other than the [[player ball]]. Since its [[collision group]] is the same as the player ball, the latter just ignores and gets through it on "contact".

Stoppers exist at the end of [[floor]]s in [[default level]]s, in the shape of a small piece of wood below the floor level, to support various kinds of objects that are able to be knocked down. Though is the most common type of Stopper 在原版关卡中均以位于路面尽头偏下位置处凸出来的一小片深色木板的形式出现，用于承接被推倒的各类机关，这也是 , just like floors and [[rail]]s, every 3D model that is sent to the Stopper 最常见的出现形式。但是就像路面和钢轨一样，任何物体模型都可以被归组为 Stopper，发挥 group works correctly as a Stopper 的作用。.

Stopper 对所有玩家球之外的实体均有效。这一特性使其在Stoppers are effective to all entities other than the player ball, which leads to its frequent appearance in object-only designs in [[自制地图custom level]]中常被用来制作一些不妨碍玩家球运行却可以影响其他机关的装置——尤其是那些会无视普通路面的机关。这时候 Stopper 一般会被设置成隐藏状态，或者配上形状相符的实体路面。s, especially to objects that ignore normal floors. Stoppers in this form are usually hidden or in the same shape as floors.

它也可以做成仅允许道具球等通行的道路，但这种设计一般会被认为“坑人”，是对玩家的戏弄。因此自制地图中需要这么做的时候，往往会设置一些提示（如不同的Stoppers can also be made into prop-ball-only paths; however, this design is generally considered tricking. Therefore, stoppers of this type in custom levels are usually highlighted (such as using different [[贴图textures]]或安放一个警示牌）来告诉玩家不要试图通过这条路。但因为这样做还是容易引发问题，这种设计在现今的自制地图中已经很少见了。or with a warning sign) to tell the player not to try to go through them. Since the probable problems, this design is rare in today's custom levels.

== 物理参数 Physical parameters ==

! scope="col"| 摩擦力Friction! scope="col"| 弹性Elasticity! scope="col"| 质量/吨Mass (ton)! scope="col"| 碰撞组Collision Group

| 1.0（不可运动，无实际意义）0

=== 标准木质 Standard Wooden Stopper 的参数 ===

厚度 0.5 米，宽 meters thick (0.1 units)，5 meters wide (1 unit)，1 meter long (0.2 units), with shorter bottom edge length 0.5 米，长 m (0.1 米；侧截面是直角梯形，较短的下底边长度 units); it is usually placed 0.5 米；放置在路面附近时，其顶面位于普通m (0.1 units) below the top surface of normal [[路面floor]]顶面下方 0s.5 米处。

== 你知道吗 Did you know ==

* When stoppers are touched by [[机关object]]触碰 Stopper 时会产生类似于木板碰撞的s, a wooden [[音效sound effect]]（但无需归入音效组）。is produced. hovever, producing that sound does not need the stopper to be in any extra sound effect groups.* 虽然机关触碰 Stopper 时有音效，但同一张地图中仅有第一个 Despite the existence of the sound effect, only the first stopper in the same level (the first in the Phys_FloorStopper 组中第一个group) Stopper 会产生音效。这虽然意味着可以制作出不带音效的隐藏 Stopper，但同一张地图内所有需要音效的 Stopper 均应被附加到同一个物体，并被第一个归入 is able to produce sound effects. Though this means that a hidden stopper without sound effects can be made, all stoppers that need sound effects in the same level must be attached into the same object and be firstly sent into the Phys_FloorStopper 组。group.* 第十三关第三小节阻挡沙袋用的护栏实际上是一列护栏（归组为 Phys_FloorRails）和同样模型的 Stopper 重叠而成的，该 Stopper 的命名为标准的 ''Floor_Stopper''，拼接了全图所有的 Stopper。因此The [[沙袋guard rail]]撞到护栏时会发出特别的撞击音效；同理，第四小节阻挡for blocking the sandbags in the third section of Level 13 is actually a series of guard rails (grouped as Phys_FloorRails) and a stopper of the same model. The stopper is named as the standard "Floor_Stopper". Therefore, [[单摆sandbag]]的护栏实际上也不是护栏，而是同一个 Stopper。它本身是隐藏的（不可见），因此不难发现，第二小节s produces the special impact sound on contact of the guard rails; similarly, the guard rails that block [[推板turnstile]]处看到的 Stopper 实际上是假的，它没有归属于任何一个组，亦类似于s in the 4th [[装饰section]]那样毫无作用，命名为 ''StopperDummy''。is actually a stopper. * Stopper 可以像[[路面]]那样添加[[影子]]，而且效果并不是像同样可以添加影子的Just like floors, [[钢轨shadow]]那样不美观。但原版关卡中的 Stopper 均没有添加影子，原因未知。s can be added to stoppers. However, stoppers in default levels do not have shadows for unknown reasons.

== 画廊 Gallery ==

File:13-3护栏stopper.jpg|在 {{zh|Virtools}} 中观察1313-3沙袋处的护栏（下方）和被隐藏的 Stopper （上方）。原本是重合的，为了便于观察特意分离。卡住沙袋的实际上是上方的 Stopper 。3 sandbag guard rails (bottom) and the hidden stopper (top), intentionally separated for easier observation. File:Stopper钢轨.jpg|自制地图A stopper for prop balls in the custom level [[完美思维3之场景版Perfect Thought 3]]中钢轨模样的 Stopper ，一个道具木球正在通过。为了警告玩家，这个“钢轨”的贴图很淡而且是网格状的。图中的纸球是操作失误而坠落的玩家球。. To warn players, the texture of this "rail" is faint and grid-like.