School_Project/app/src/main/java/school_project/Shape.java

package school_project;


import java.io.Serializable;

/**
 * Base class for everything that is a shape kind, like map and pieces
 * it contain a matrix of boolean where the shape is defined by the true's
 */
public class Shape implements Serializable, Cloneable{
    
    protected boolean[][] matrix;
    protected int height, width;

    public Shape() {
        matrix = new boolean[0][0];
    }

    public Shape(boolean[][] matrix){
        this.setShape(matrix);
    }

    public void setShape(boolean[][] matrix) throws IllegalArgumentException{
        height = matrix.length;
        width = matrix[0].length;

        for (boolean[] row: matrix){
            if(row.length != width){
                throw new IllegalArgumentException("The argument should be a square matrix");
            }
        }
        this.matrix = matrix;
    }

    public int getHeight() {
        return height;
    }

    public int getWidth() {
        return width;
    }

    public boolean[][] getShape() {
        return matrix;
    }

    @Override
    public String toString() {
        String ret = "";
        for (boolean[] row : matrix) {
            for (boolean el : row) {
                if(el) ret = ret.concat("⬛");
                else ret = ret.concat("⬜");
            }
            ret = ret.concat("\n");
        }
        return ret;
    }
}