Rpg Maker Developers Group

Good morning, afternoon or evening, I happen to have an idea of how to accurately replicate the Fossil Fighters cleaning system. I just need to know how I'd go about doing it:

So far, I have managed to create a mask set up for the fossil rock along with the drill/hammer effects, and the fossil hidden inside as shown in my MV demo posted on itch.io:

Dragon Bones Browser Demo

Though adding multiple of the same bitmap on click was evidently slowing the game's fps down, I believe masking the layers of rock and fossil was just a step in the right direction. In theory, if RPG Maker MZ would allow it, I could draw a grid with a range between 12-24 rows and 6-12 columns using 2D arrays. I chose it to vary from those particular numbers since I've noticed that some fossil rocks are delicate, and with such a low durability, I can make the columns and rows become the minimum amount and vice-versa.

the maximum cell size is 48 pixels while minimum is half as much. In the case of using a 2d array, I could create an artificial auto tile setup using a set of character sprites that change upon touching a grid cell (via touch or mouse input) adjacent to another dug up cell, like the auto tiling logic in the map editor.

Anyways, these are my questions:

1. Is it possible to draw a 2D array without using a draw() function as shown in most online tutorials?
2. Am I able to fake an auto-tile setup using this scheme? If so, how?
3. Finally, how can I assign a value for each grid cell that decrements independently depending on current grid cell coordinates?

If anyone knows the answers to these questions: Please reply. Thank you in advance.