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我看过一轮navfn源码,感觉不是双向A*,是从goal点开始,计算到start点的potential值(代价值),看着是单向。有个算法讲解(文章是讲dijk的但是在源码里面,propdijk和propastar相比只是少了一个distance判断),看这个也许你能明白:https://blog.csdn.net/Neo11111/article/details/104645228