'''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 [[module]]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".

* When [[机关module]] touches Stoppers touch stopper, it will produce a wooden [[音效sound effect]](Sound Effect) similar to a board collision (but is produced. hovever, it does not need the stopper to be classified as a sent into any sound effect group)to produce that sound.* Although there is a Despite the existence of the sound effect when the agency touches the Stopper, only the first stopper in the same map level (the first in the Phys_FloorStopper group) will is able to produce a sound effecteffects. Although Though this means that you can make a hidden Stopper stopper without sound effectscan be made, all Stoppers stoppers that need sound effects in the same map level should be attached to into the same object and be first classified firstly sent into the Phys_FloorStopper group.* The guardrail [[guard rail]] for blocking the sandbags in the third section of the thirteenth stage Level 13 is actually a series of guardrails guard rails (grouped as Phys_FloorRails) and the Stopper a stopper of the same model. The Stopper stopper is named as the standard `` "Floor_Stopper '', and the whole picture is stitched. All Stopper". Therefore, [[沙袋sandbag]] will produce a s produces the special impact sound when it hits on conpact of the fenceguard rails; similarly, the fence guard rails that blocks block [[单摆turnstile]] s in the fourth measure is not actually the fence, but the same Stopper. It itself is hidden (invisible), so it is not difficult to find that the Stopper seen in the second section 4th [[推板sector]] is not actually fake, it does not belong to any group, and is similar to [[装饰]] That didn't work, it was named "StopperDummy"a stopper.* Stopper can add [[影子]] Just like [[路面]]floors, and the effect is not as unsightly as [[钢轨shadow]], which s can also add shadowbe added to stoppers. However, the Stopper stoppers in the original level did default levels do not add have shadows for unknown reasons.

File:13-3护栏stopper.jpg| Look at the fence at the 13-3 sandbag guard rails (bottom) and the hidden Stopper stopper (top) in {{zh|Virtools}}. Originally coincident, intentionally separated for easy easier observation. The stuck sandbag is actually the Stopper above.File:Stopper钢轨.jpg|A stopper for prop balls in the self-made map custom level [[完美思维3之场景版Perfect Thought 3]]of rails, a prop wooden ball is passing. To warn players, the texture of this "rail" is faint and grid-like. The paper ball in the picture is a player's ball that has fallen by mistake.