Block.java

import java.awt.*;
import java.util.ArrayList;

public abstract class Block{
    Block next = null;
    Block prev = null;
    private int x_len = 70, y_len = 15;
    private String name;
    private Color color;
    private int x1, y1, x2, y2;

    public String getName(){
        return this.name;
    }

    public Color getColor() {
        return color;
    }

    public int getX_len() {
        return x_len;
    }

    public int getY_len() {
        return y_len;
    }

    public abstract void draw(Graphics g);

    public abstract void connect();

    public void moving(int x_diff, int y_diff){
        setX1(x_diff);
        setX2(x_diff + x_len);
        setY1(y_diff);
        setY2(y_diff + y_len);
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setColor(Color color) {
        this.color = color;
    }


    public void shift(int y_diff){
        moving(this.getX1(), this.getY2());
    }

    public int getX1() {
        return x1;
    }

    public int getY1() {
        return y1;
    }

    public int getX2() {
        return x2;
    }

    public int getY2() {
        return y2;
    }

    public void setX1(int x1) {
        this.x1 = x1;
    }

    public void setY1(int y1) {
        this.y1 = y1;
    }

    public void setX2(int x2) {
        this.x2 = x2;
    }

    public void setY2(int y2) {
        this.y2 = y2;
    }
}