A* (A-Star) Pathfinding Algorithm

I got still a lot to learn, there is a bug that makes the circles appear on the black boxes, which indicates the wall and shouldn't be considered a path by this A* algorithm. Maybe a different solution to visualisation is necessary, or maybe I should scrap the current one.

Made thanks to the tutorial by TechWithTim, regarding the A* Pathfinding method

main.py

Implementation of the A* Pathfinding Algorithm

The script contains a astaralgorithm class which extends the Tkinter's Frame class to create a GUI application. The GUI application displays a maze-like grid and it animates the steps taken by the A* Algorithm to find a path from the start point to the goal.

The astaralgorithm class provides the following functionalities:

• Reads a grid from array.txt divided by coma.
• Visualizes the A* pathfinding process (walls, paths etc)
• A GUI window
• Uses the Turtle Graphics for grid and path visualization.
• Allows for the selection of the grid file.

array.txt

Simple Grid used by 'class astaralgorithm'

array_randomizer.py

Python script fills a predefined grid with random 0 and 1 values and then saves the result to the array.txt file. The 0,0 and the len(array)-1, len(array[i])-1 grid cells are guaranteed to be open to allow for a possible path from the start to the goal.

tool for learning and understanding the A* Pathfinding Algorithm with a visual representation