how am I the only one that doesn't know how to do this?

Question about the task

Resolved

Mentor says "The section list must be initialized in the snake class constructor" I can think of what I am supposed to do for the life of me.

It's the Snake class constructor's turn.

Initially, the snake consists of one piece: the head.
And what does it require?
What needs to be passed to the constructor?
The coordinates of the snake, of course.

Here's what we need:
a) Pass the coordinates of the snake's head (x and y) to the constructor.
b) create the first "piece of the snake" (the head) in the constructor and add it to the sections collection (ArrayList).
c) set isAlive to true.
d) don't forget to initialize the sections variable in the constructor. You can't add much to a null object!
e) create and implement the int getX() method. The method should return the x-coordinate of the snake's head.
e) create and implement the int getY() method. The method should return the y-coordinate of the snake's head.
g) also add a move() method to the class—it will come in handy later.
h) the constructor must be public.

Requirements:

A correctly functioning (according to the task conditions) public constructor with two int parameters must be created in the Snake class.
A no-parameter getX() method that returns the x-coordinate of the zeroth element of the sections list must be created in the Snake class.
A no-parameter getY() method that returns the y-coordinate of the zeroth element of the sections list must be created in the Snake class.
The move method must be created in the Snake class.

package com.codegym.task.task23.task2312; public class Room { public static void main(String[] args) { } }

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Vahan

Level 41 , Tbilisi, Georgia

19 January 2020, 07:28

You should specify the type of data in list and pass the coordinates of the snake's head: sections = new ArrayList<SnakeSection>(); sections.add(new SnakeSection(x, y));

Jason

Level 26 , Rancho Cucamonga, United States

19 January 2020, 19:53

unfortunately this didn't work :(

public Snake(int x, int y) {
        sections = new ArrayList<SnakeSection>();
        //SnakeSection head = new SnakeSection(x, y);
        assert false;
        sections.add(new SnakeSection(x,y));
        isAlive = true;
    }

Jason

Level 26 , Rancho Cucamonga, United States

19 January 2020, 20:06

ugh, I figured out what it was. I had to take the "assert false" line out of there.

Vahan

Level 41 , Tbilisi, Georgia

20 January 2020, 06:56

solution

Yes, I forgot to warn that the 'assert' should be removed