Can anyone help whats wrong in a way I am using helper class ShapeMatrix

Question about the task

Moon Lander (Part 4/23)

Games, Level 0, Lesson 4

Resolved

error: cannot find symbol symbol: variable ShapeMatrix location: class com.codegym.games.moonlander.part04.Rocket.

In addition to coordinates, a game object will have a matrix responsible for the object’s appearance. Let’s add an int[][] matrix variable to the GameObject class to store it. And now we’ll tackle the lunar landing module.
For simplicity, we’ll just call it a rocket. We’ll create a Rocket that inherits GameObject, since the rocket is a game object.

Note that we now have a ShapeMatrix helper class, which stores the matrix responsible for the rocket’s appearance.

Requirements:

The GameObject class must have a public int[][] matrix field.
The constructor with 2 double parameters must be removed from the GameObject class.
A public constructor with three parameters (double, double, int[][]) must be added to the GameObject class. It must use the parameters to set the x and y fields and the matrix field.
There must be only one constructor in the GameObject class.
There must be a public Rocket class.
The Rocket class must be a descendant of the GameObject class.
The Rocket class must have one public constructor with two double parameters (x and y) that uses the super keyword to call the base class's constructor with x, y, and ShapeMatrix.ROCKET as arguments.

package com.codegym.games.moonlander; import com.codegym.engine.cell.*; public class MoonLanderGame extends Game{ public static final int WIDTH=64; public static final int HEIGHT=64; @Override public void initialize() { setScreenSize(WIDTH,HEIGHT); this.createGame(); } private void createGame() { this.drawScene(); } private void drawScene() { for(int i=0;i<HEIGHT;i++) { for(int j=0;j<WIDTH;j++) { setCellColor(i,j,Color.BLACK); } } } }

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Roman

Level 41

10 September 2019, 09:58

solution

Class ShapeMatrix is absent. Please, add this class to class-tree and put this code there:

package com.javarush.games.moonlander;

public class ShapeMatrix {
    public static final int[][] ROCKET = new int[][]{
            {0, 0, 0, 6, 0, 0, 0},
            {0, 0, 6, 6, 6, 0, 0},
            {0, 0, 6, 0, 6, 0, 0},
            {0, 0, 6, 6, 6, 0, 0},
            {0, 0, 6, 0, 6, 0, 0},
            {0, 0, 6, 6, 6, 0, 0},
            {0, 6, 6, 0, 6, 6, 0},
            {6, 6, 6, 6, 6, 6, 6},
            {6, 0, 0, 6, 0, 0, 6},
    };
}

Shashank Mishra

Level 18 , Panaji, India

10 September 2019, 12:32

okay got it thanks