Make equal-cost pathfinding deterministic - #13361
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CIVITAS-John wants to merge 2 commits into
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CIVITAS-John wants to merge 2 commits into
CIVITAS-John wants to merge 2 commits into
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Nice one! |
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Is this a common occurrence? If so, will AI behaviour be too predictable (they prefer using the northeastern path)? |
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Units can choose different routes when equally good paths are explored in a different heap order. Give tied nodes a stable order so the same pathfinding inputs produce reproducible choices across heap implementations.
This is mostly needed for the offline tactical simulation project. It may make seeded games more reproducible as a result too.
PrNodeIsBetterinCvAStarNode.hpreserves total-cost and heuristic priorities, then orders ties by Y, X, and normal nodes before stop nodes.