Code Explanation

This code is a Pyxel-based implementation of the classic Peg Triangle game. Let's break down the code and understand its functionality:Here's a detailed explanation of the code:

1. Initialize Game:

    The game board is represented as a list board with 15 elements, where the first element is set to 0 (empty) and the remaining 14 elements are set to 1 (pins).
    The positions list stores the (x, y) coordinates of the 15 fields in the triangle.
    The moves list defines all valid moves for the game, including horizontal, diagonal left, and diagonal right moves, both over one and two fields.
    The selected variable is initialized to None, indicating that no field is currently selected.

2. Handle User Input:

    When the left mouse button is pressed, the get_clicked_field function is used to determine the clicked field.
    If no field is clicked, the selected variable is set to None.
    If selected is None, the code checks if the clicked field has a pin (value 1 in the board list).
    If selected is not None, the code tries to make a valid move by checking the moves list. If a valid move is found, the board list is updated accordingly, and the selected variable is set to None.
    If no valid move is found, the code checks if the clicked field has a pin. If it does, the selected variable is set to the clicked field. If it doesn't, the selected variable is set to None.

3. Render Game:

    The screen is cleared using pyxel.cls(0).
    The fields on the board are drawn using pyxel.circ(). The color of the field depends on whether it is selected (color 10), has a pin (color 9), or is empty (color 5).
    The number of remaining pins is displayed using pyxel.text().

4. Main Game Loop:

    The game loop consists of the update() and draw() functions, which are called by the Pyxel framework.
    The update() function handles user input and updates the game state.
    The draw() function renders the game board and the number of remaining pins.

The code implements the core logic of the Peg Triangle game, allowing the user to select a pin and make valid moves to remove pins from the board. The game continues until all pins have been removed or no more valid moves are possible.