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Pathfinding Gadget

"Pathfinding Gadget" a is gadget that can show you the shortest path from the "start" point to the "target" point in the maze you have drawn. (The path is found using the BFS pathfinding algorithm.)

I made this gadget in a few hours as a test one.

Use D-Pad to move cursor.
Use (Circle) to place selected object.
By holding (Circle) and pressing [Left] and [Right] on D-Pad, you can switch modes.

This gadget has 4 modes:
1. Placing Blocks
2. Placing Start
3. Placing Target
4. Viewing Path

Keyboard is required to use the gadget:
[D-Pad] - [WASD]
(Circle) - [Enter]
(Right Arrow) - [Tab]