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Tricks with pathfinding

Forum Index > SC2 General
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ru.meta
Profile Joined November 2010
Russian Federation88 Posts
Last Edited: 2011-05-03 05:57:37
May 02 2011 13:57 GMT
#1
I found a couple of tricks with Starcraft's pathfinding (probably I'm not first but anyway ^_^). They allows you to:

- sneaky check opponents location and expansion
- in some circumstance know about destructible rocks fall

[image loading]

updates

- you can use any unit (not only worker) to do any of this
- "closed areas" include walled-in Terran's base, so you can know when supply depot is down
- difference in worst case (when I find opponent on 3th possible location) on Delta Quadrant is about 15 seconds compared to "normal" way to scout.
sc2drill.com
ch4ppi
Profile Joined July 2010
Germany802 Posts
May 02 2011 14:02 GMT
#2
Wow wtf 0.o

This is a great find, especially with the exe.
Alsn
Profile Joined February 2008
Sweden995 Posts
Last Edited: 2011-05-02 14:04:27
May 02 2011 14:03 GMT
#3
Yes, units having "perfect" pathfinding even though you haven't scouted has been known for a while.

Your trick of using waypoints to see if the worker paths slightly "off track" however is new to me, nice find!
Machina improba! Vel mihi ede potum vel mihi redde nummos meos!
Binabik
Profile Joined January 2011
Germany686 Posts
May 02 2011 14:05 GMT
#4
OMG blind ProxyGates incoming
Quasimoto3000
Profile Blog Joined December 2009
United States471 Posts
May 02 2011 14:05 GMT
#5
I must say, his voice is quite sultry.

Iv been waiting for someone to put up a good video like this. Im sure pros could gain some cool advantages with this.
Every sunday a nun lays from my gunplay
Despicatus
Profile Joined January 2011
34 Posts
Last Edited: 2011-05-02 14:08:38
May 02 2011 14:05 GMT
#6
Well, this is pretty evil for cannon rushes and just scouting in General, I really hope Blizzard updates the path finding engine to fix this.
I don't think that this is meant to be, nor that it should be in the game.

Uhm wait 1 sec, so how much faster can you actually scout your opponent on a 4 player map like tal darim with this?
Jinsho
Profile Joined March 2011
United Kingdom3101 Posts
May 02 2011 14:07 GMT
#7
Wow, sweet. That is really nice and quite ingenuitive.
monitor
Profile Blog Joined June 2010
United States2404 Posts
May 02 2011 14:07 GMT
#8
Wow, finding the expansion and main is pretty unbelievable. It takes a keen eye to notice the slight change in direction, but it will definitely be used in games if its not patched. Time to start using it myself!
Mapmaker & TLMC Judge. Amygdala, Frostline, Crimson Court, and Korhal Compound (WoL).
gondolin
Profile Blog Joined September 2007
France332 Posts
May 02 2011 14:08 GMT
#9
Knowing that the opponent walled according to the scouting path of your drone is quite evident, but I had not thought at all about the other uses of the pathing system you describe, they are really clever!
Mikilatov
Profile Blog Joined May 2008
United States3897 Posts
May 02 2011 14:10 GMT
#10
Really cool, thanks for the video. I knew that the pathfinding could be exploited in terms of ramp blocks, but didn't think of the other applications brought up in the video. I'm not entirely sure which side of the fence I'm on in terms of if this should be changed or not, for I think it's kind of neat that players can use little tricks like this (BW was filled of random tricks itself, as we all know), but at the same time it's a bit... Broken.
♥ I used to lasso the shit out of your tournaments =( ♥ | Much is my hero. | zizi yO~ | Be Nice, TL.
Dny
Profile Joined December 2010
Netherlands23 Posts
May 02 2011 14:10 GMT
#11
Imagine some pro using this trick in a tournamentgame.. Ppl that dont know this trick will be hella confused and blame the pro for hacking.

Hope Blizzard will fix this.
Please hold your applause until my next post.
ru.meta
Profile Joined November 2010
Russian Federation88 Posts
May 02 2011 14:12 GMT
#12
On May 02 2011 23:05 Despicatus wrote:
Well, this is pretty evil for cannon rushes and just scouting in General, I really hope Blizzard updates the path finding engine to fix this.
I don't think that this is meant to be, nor that it should be in the game.

Uhm wait 1 sec, so how much faster can you actually scout your opponent on a 4 player map like tal darim with this?


I'm not sure. Probably difference is not large. But sometimes 3 seconds is a difference between "I'm in" and "marine is out".
sc2drill.com
hugman
Profile Joined June 2009
Sweden4644 Posts
May 02 2011 14:15 GMT
#13
This only works when there's a clear path between you and the obstacle you're trying to find, and that's not the case on a lot of maps. What I mean is that you need line of sight to your opponent's expo to "proxy scout" it.
PaPoolee
Profile Blog Joined August 2010
United Arab Emirates660 Posts
May 02 2011 14:15 GMT
#14
Wow needs to be patched ASAP, great find =>.
Sleight
Profile Blog Joined May 2009
2471 Posts
May 02 2011 14:15 GMT
#15
Incredible find. Just incredible.
One Love
Binabik
Profile Joined January 2011
Germany686 Posts
May 02 2011 14:15 GMT
#16
The great thing about this trick is that your opponent won't be able to notice that he's been scouted unless he places a building near the ramp.

Terran and Protoss will be as easily spotted as Zerg.
Keype
Profile Joined March 2010
Sweden455 Posts
May 02 2011 14:16 GMT
#17
Really cool tricks u have find , stuff like that will probably get patched tho.
Tornado Terran Fighting!
ru.meta
Profile Joined November 2010
Russian Federation88 Posts
Last Edited: 2011-05-02 14:21:24
May 02 2011 14:16 GMT
#18
On May 02 2011 23:15 hugman wrote:
This only works when there's a clear path between you and the obstacle you're trying to find, and that's not the case on a lot of maps. What I mean is that you need line of sight to your opponent's expo to "proxy scout" it.


Definitely. Any ramp on path nullifies the difference in patches "with" and "without" Nexus.
sc2drill.com
WindOw
Profile Blog Joined November 2008
Sweden407 Posts
May 02 2011 14:17 GMT
#19
nice find
AKA WindOw[InCa] (BW) | TheMisT (SC2) | NaNiwa FC founder
Talho
Profile Joined August 2010
Belgium592 Posts
May 02 2011 14:18 GMT
#20
Program wise this might be very hard to fix without bugging other pathfinding stuff :/
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