gomoku/src/RenderBoard.java

import java.awt.Color;
import java.awt.Graphics;

class RenderBoard {

    private int boardWidth;
    private int boardHeight;
    public int renderWidth;
    public int renderHeight;
    private int cellSize;
    private int borderThickness;
    // private int[][] boardState;

    public RenderBoard(int width, int height, int renderWidth, int renderHeight) {
        this.boardWidth = width;
        this.boardHeight = height;
        this.renderWidth = renderWidth;
        this.renderHeight = renderHeight;
        this.borderThickness = 5;
        int cellWidth = renderWidth / width;
        int cellHeight = renderHeight / height;
        this.cellSize = Math.min(cellWidth, cellHeight);
    }

    public RenderBoard(int renderWidth, int renderHeight) {
        this(
            GomokuGame.DEFAULT_BOARD_WIDTH,
            GomokuGame.DEFAULT_BOARD_HEIGHT,
            renderWidth,
            renderHeight
        );
    }

    public void update(GomokuGame game) {
        // Update the board state based on the game
        // This method should be called whenever the game state changes
    }

    public void drawBoard(Graphics g, int x, int y) {
        // Draw the global border
        g.setColor(Color.LIGHT_GRAY);
        g.fillRect(
            x,
            y,
            this.renderWidth + 2 * this.borderThickness,
            this.renderHeight + 2 * this.borderThickness
        );
        g.setColor(Color.WHITE);
        g.fillRect(
            x + this.borderThickness,
            y + this.borderThickness,
            this.renderWidth,
            this.renderHeight
        );

        int i, j;
        int cy = y + this.borderThickness;
        for (i = 0; i < this.boardHeight; i++) {
            int cx = x + this.borderThickness;
            for (j = 0; j < this.boardWidth; j++) {
                // Draw the border
                g.setColor(Color.LIGHT_GRAY);
                g.fillRect(
                    cx,
                    cy,
                    this.cellSize,
                    this.cellSize
                );
                g.setColor(Color.WHITE);
                g.fillRect(
                    cx + this.borderThickness,
                    cy + this.borderThickness,
                    this.cellSize - 2 * this.borderThickness,
                    this.cellSize - 2 * this.borderThickness
                );
                // Draw the cell
                this.drawToken(g, x, y, Color.BLUE);
                cx += this.cellSize;
            }
            cy += this.cellSize;
        }
    }

    public void drawToken(Graphics g, int x, int y, Color color) {
        // Draw the token at the specified position
        g.setColor(color);
        g.fillRect(
            x + 2 * this.borderThickness,
            y + 2 * this.borderThickness,
            cellSize - 2 * borderThickness,
            cellSize - 2 * borderThickness
        );
    }
}