# HL-Engine: Edgebug

**URL:** <https://forums.sourceruns.org/t/hl-engine-edgebug/1532>\
**Category:** Archives\
**Created:** [April 21, 2006, 5:10pm UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532 "2006-04-21T17:10:00Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![system](https://forum-content.sourceruns.org/original/1X/fba7d899f85b067a16647b39a5fa8913d95f2b05.png) [@system](https://forums.sourceruns.org/u/system)\
**Post date:** [April 21, 2006, 5:10pm UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532/1 "2006-04-21T17:10:00Z")

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Hi,I m a well-known jumper of kz\_maps (kreedz climbing maps) for Counter-Strike.I m not sure if you guys already know the bug i wanna present you.We kz-jumpers call it “Edgebug”. It allows you to jump down from a very high place to a lower level without loosing any HPs. It’s a bug in the HL-Engine and although we are only using this in our kreedz-record-runs it should be definately possible in HL also. Maybe this trick could help to save some time in a HL Speedrun. [We](http://xtreme-jumps.net/) created a little video which explains the bug and shows how to do it:[http://files.xtreme-jumps.net/movies/edgebugguide.rar](http://files.xtreme-jumps.net/movies/edgebugguide.rar)Its very hard to do the bug “planned” often it’s only luck.I hope this helps to save some time in upcoming HL1-engine-based-games speedruns :)Btw, how are you guys doing bhops?(Most of the “kz-pr0s” are using “+jump” bound to MHWEELUP/DOWN.)

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**Author:** ![happyface\_0](https://b-cdn.sourceruns.org/user_avatar/forums.sourceruns.org/happyface_0/32/17_2.png) [@happyface\_0](https://forums.sourceruns.org/u/happyface_0)\
**Post date:** [April 21, 2006, 5:44pm UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532/2 "2006-04-21T17:44:00Z")

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Bunnyhops are dont using an autohotkey script. You hold down left Alt and it keeps pressing jump every 30ms or so. I could never bhop with a mousewheel :o

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**Author:** ![system](https://forum-content.sourceruns.org/original/1X/fba7d899f85b067a16647b39a5fa8913d95f2b05.png) [@system](https://forums.sourceruns.org/u/system)\
**Post date:** [April 21, 2006, 7:42pm UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532/3 "2006-04-21T19:42:00Z")

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He’s talking about the original half life, happyface.The no-damage thing I’m pretty sure is known, there’s a big thread of HL tricks in the SDA forums and I remember talk about it. Could be wrong though.In either case, this is mainly a HL2 or other Source related forum, although a few people here (RandomEngy for example) have made runs for HL1. Spider-Waffle is doing a \<35 minute run currently, not sure when he’ll finish that.Check these two threads if you’re interested in HL1 runs:[http://speeddemosarchive.com/yabb/YaBB.pl?..;num=1118551288](http://speeddemosarchive.com/yabb/YaBB.pl?board=pcgames;action=display;num=1118551288)[http://speeddemosarchive.com/yabb/YaBB.pl?..;num=1134018730](http://speeddemosarchive.com/yabb/YaBB.pl?board=pcgames;action=display;num=1134018730)

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**Author:** ![system](https://forum-content.sourceruns.org/original/1X/fba7d899f85b067a16647b39a5fa8913d95f2b05.png) [@system](https://forums.sourceruns.org/u/system)\
**Post date:** [April 21, 2006, 7:43pm UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532/4 "2006-04-21T19:43:00Z")

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The filesize of that vid is unnecessarily large for just over a minute long.

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**Author:** ![DaleLewill](https://b-cdn.sourceruns.org/letter_avatar_proxy/v4/letter/d/bc79bd/32.png) [@DaleLewill](https://forums.sourceruns.org/u/DaleLewill)\
**Post date:** [April 24, 2006, 1:00pm UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532/5 "2006-04-24T13:00:00Z")

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Nice video, though a bit short. But I always enjoy a trick video 🙂

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**Author:** ![DemonStrate](https://b-cdn.sourceruns.org/user_avatar/forums.sourceruns.org/demonstrate/32/10_2.png) [@DemonStrate](https://forums.sourceruns.org/u/DemonStrate)\
**Post date:** [April 24, 2006, 1:04pm UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532/6 "2006-04-24T13:04:00Z")

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Hey, if this worked for Source engine, it would be quite useful, especially on the current HL:S Map we are on, c1a0a. We wouldnt even have to use the ladder at all. Just land on the edge. :-D.

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**Author:** ![happyface\_0](https://b-cdn.sourceruns.org/user_avatar/forums.sourceruns.org/happyface_0/32/17_2.png) [@happyface\_0](https://forums.sourceruns.org/u/happyface_0)\
**Post date:** [August 24, 2007, 5:18am UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532/7 "2007-08-24T05:18:00Z")

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Uh oh, the bots are back ☹

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**Author:** ![Cameron\_D](https://b-cdn.sourceruns.org/user_avatar/forums.sourceruns.org/cameron_d/32/251_2.png) [@Cameron\_D](https://forums.sourceruns.org/u/Cameron_D)\
**Post date:** [May 19, 2018, 4:08am UTC](https://forums.sourceruns.org/t/hl-engine-edgebug/1532/8 "2018-05-19T04:08:20Z")

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Archived on May 19, 2018, 4:08am UTC