Comments (5)
Hey Simon,
Wow that looks extremely wrong. The search time is also huge. I'll try to replicate this problem asap and I'll see if I can fix it!
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I've found the bug and fixed it.
I store the data of the grid in a 1D array, I did not always compute the index into that array correctly (dimx * x + y
instead of dimx * y + x
) at one place. I've made sure this cannot happen again. I've also tweaked the distance metric. Since the squared Euclidian distance metric I used actually overestimates the cost of getting somewhere. Which also resulted in sometimes slightly sub-optimal paths. I now use the Chebyshev distance metric.
I've uploaded the changes to the repository. I'll publish a new NuGet package at the end of the day, once I'm home. Thanks so much for reporting this problem!
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Thanks for catching it. Will do some more testing
At least it's best to find it early and then double down on Unit Tests :D
from astar.
I'll open a new issue for unit tests. Its definitely needed. But I'm having a hard time thinking of where/how to add them.
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The updated nuget package was release and is available at https://www.nuget.org/packages/RoyT.AStar/
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Related Issues (20)
- Index was outside the bounds of the array error HOT 2
- Memory allocation number is unacceptable and library author ignoring the concerns HOT 5
- Considering the size of the agent
- Finding closest path to unreachable end cell HOT 4
- Deterministic? HOT 2
- Info: v2 WIP version available on Master HOT 2
- Hidden Connect method HOT 3
- Documentation / IntelliSense support HOT 5
- Isometric Support HOT 1
- Coming to v3 HOT 3
- Path. HOT 3
- No issue just a question. HOT 3
- Saving and loading graphs HOT 7
- TODO: release new minor version with save/load changes HOT 1
- just question HOT 2
- Question: GPS coordinates HOT 3
- Question HOT 1
- Explanation on how velocity is used HOT 6
- Question : Bidirectional graph search HOT 1
- Question: obstacles HOT 3
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