# Line trace at y = 0, landscape

**URL:** <https://forums.unrealengine.com/t/line-trace-at-y-0-landscape/375729>\
**Category:** World Creation\
**Tags:** line-trace, unreal-engine, Landscape, bug-report, question\
**Created:** [November 8, 2016, 4:06am UTC](https://forums.unrealengine.com/t/line-trace-at-y-0-landscape/375729 "2016-11-08T04:06:24Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![kurosu143](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@kurosu143](https://forums.unrealengine.com/u/kurosu143)\
**Post date:** [November 8, 2016, 4:06am UTC](https://forums.unrealengine.com/t/line-trace-at-y-0-landscape/375729/1 "2016-11-08T04:06:24Z")

</div>

When using line trace along y = 0 straight down vector on landscape the trace doesn’t hit. x = 0 works fine and only on landscape, not on other actors. Line trace by object or channel, not any other trace.

It’s a really small bug but still.

 ![114165-linetracebug.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/9/8/c/98c1e87232719286f9898a5d51200a83ccd25a56.png)

 ![114166-tracebug.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/b/5/8b56b64f77ed8537114bd63bdcde18d345eae2e1.png)

---

<div class="post-metadata">

**Author:** ![anonymous\_user\_b9532c9a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b9532c9a](https://forums.unrealengine.com/u/anonymous_user_b9532c9a)\
**Post date:** [November 8, 2016, 3:37pm UTC](https://forums.unrealengine.com/t/line-trace-at-y-0-landscape/375729/2 "2016-11-08T15:37:30Z")

</div>

Hi kurosu143,

Can you check to see if your linetrace is directly over a seam between landscape components? It looks like it is. If so, this may be a known issue. Please let me know if this is the case.

---

<div class="post-metadata">

**Author:** ![kurosu143](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@kurosu143](https://forums.unrealengine.com/u/kurosu143)\
**Post date:** [November 17, 2016, 12:26pm UTC](https://forums.unrealengine.com/t/line-trace-at-y-0-landscape/375729/3 "2016-11-17T12:26:53Z")

</div>

Yes, it seems to be the problem

---

<div class="post-metadata">

**Author:** ![TJ\_V](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/tj_v/32/1008648_2.png) [@TJ\_V](https://forums.unrealengine.com/u/TJ_V)\
**Post date:** [November 18, 2016, 7:13pm UTC](https://forums.unrealengine.com/t/line-trace-at-y-0-landscape/375729/4 "2016-11-18T19:13:45Z")

</div>

Hi kurosu143,

Since that is the case, this is a known issue that is currently being investigated. It is [JIRA UE-11871](https://issues.unrealengine.com/issue/UE-11871). Please feel free to monitor the status of the bug and vote for it to be fixed.

Cheers,

TJ