I’m trying to implement an A* algorithm for pathfinding in my 3D grid. I’ve been following a tutorial but I’m not getting a valid path. I’ve stepped through my code to find out what’s going on, but I don’t know how to solve the problem. For the most basic test I’m just using a 2-D ..
Category : a-star
My algorithm works almost well, but unfortunately, when it reaches a corner, it can’t move further. Can you give me some hints on what I am doing wrong? If the algorithm does not encounter obstacles, it is free to move left, right, up and down. However, if on a corner, as in the map I ..
I’m currently working on A* algorithm small project but I think there is a problem with manhattan distance. I mean, when the code equals to: inline int32 manhattanDistance(Node* startNode, Node* endNode) { int32 deltaX = std::abs(startNode->position.x – endNode->position.x); int32 deltaY = std::abs(startNode->position.y – endNode->position.y); return deltaX + deltaY; } It’s returning the path as: Valid ..
I just started to learn c++ at university, I have to create a pacman in c++. I wanted to integrate the algorithm of A. Star, I tried ^^, I think I have included it well however when the distance of the target is greater than 4, he sends me the list but not with the ..
I’m implementing A* algorithm which requires a faster query of data, the best way I could think of is Hash Tables (unordered_map in cpp) but the computation time is little high(4 micro secs for each query) for my use case. A*: A* is a Heuristic-based search method to find the optimal solution in a given ..
I’m trying to create an A star algorithm in c++. However, the target node is never found. I know that the function is incomplete because the path is never updated but that is not relative to my problem. I think I’m doing something wrong with the tentative G score and the neighbor G score at ..
we have a project that makes a robot that finds the shortest route in anywhere from a to b. The image we have is a closed 2D white world with black walls and obstacles. I want to implement the A* pathfinding by first using brushfire algorithm. I successfully managed to use brushfire algorithm in my ..
I am attempting an online coding challenge wherein I am to implement a pathfinding algorithm that finds the shortest path between two points on a 2D grid. The code that is submitted is tested against a number of test cases that I, unfortunately, am unable to see, but it will however tell me if my ..
You are given some numbers in form of a grid say 2 2 2 0 2 0 2 2 0 1 2 0 0 0 0 2 0 1 2 0 1 0 1 2 2 2 2 2 2 2 2 2 2 2 2 2 You can only travel on the points containing ..
I have been programming for a little while, but I am relativly new to c++. I am trying to implement the A* algorithm and have managed to produce the code below. The implementation producces the expected result, the shortest path from point A to B in a 2D grid, but I suspect i leave behind ..
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