CODEWITHSUNDEEP
javaandroid
Pawelnr1
Pawelnr1

Reputation: 233

Resetting object in java

I'm working on an Android Game. Entire gameplay is in "Gameplay" class. The problem is when i want to have start again option and i have no idea how to remove "mg" object from "Gameplay" class and make a new one. Here is my code:

package com.PJA.game;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class GameScreen extends BaseScreen {
    static short state=1;
    Gameplay mg;
    Menu mm;
    LostScreen ls;
    public GameScreen(Gra game) {
        super(game);
        mm=new Menu();
        mg=new Gameplay();
        ls=new LostScreen();
    }

    public void update() {
        if(state==1)    mm.live();
        if(state==2)    mg.live();
        if(state==3)    ls.live();

        Gdx.app.log("CurrentState: ", Integer.toString(state));
    }

    public void drau(SpriteBatch sb) {
        if(state==1)    mm.show(sb);
        if(state==2)    mg.show(sb);    
        if(state==3)    ls.show(sb);
    }
}

Upvotes: 0

Views: 3219

Answers (3)

Aaron Digulla
Aaron Digulla

Reputation: 328624

It's often a bad idea to initialize all fields in the constructor. While it feels natural, it limits reuse. It's often better to create a dedicated init() or reset() method:

public GameScreen(Gra game) {
    super(game);

    reset();
}

public void reset() {
    mm=new Menu();
    mg=new Gameplay();
    ls=new LostScreen();
}

Upvotes: 0

Bozho
Bozho

Reputation: 597124

mg = new Gameplay()

this will create a new instance that will replace the old one (which will eventually be garbage-collected)

Another option, which is way more verbose, is to write a .reset() method that sets all fields of Gameplay to their initial values. This will give you better control over which fields you want to reset, but if you want everything - just create a new instance of Gameplay

Upvotes: 0

Dave Newton
Dave Newton

Reputation: 160201

Make a new one and set it to mg.

Upvotes: 1

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