Learn LIBGDX with Real Code Examples

Updated Nov 24, 2025

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Code Sample Descriptions

LibGDX Simple Counter Game

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class CounterGame extends ApplicationAdapter {
    private SpriteBatch batch;
    private BitmapFont font;
    private int count;

    @Override
    public void create() {
        batch = new SpriteBatch();
        font = new BitmapFont();
        count = 0;
    }

    @Override
    public void render() {
        if (Gdx.input.isKeyJustPressed(Input.Keys.UP)) count++;
        if (Gdx.input.isKeyJustPressed(Input.Keys.DOWN)) count--;

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        font.draw(batch, "Count: " + count, 100, 150);
        batch.end();
    }

    @Override
    public void dispose() {
        batch.dispose();
        font.dispose();
    }
}

A basic LibGDX example that displays a counter and increments/decrements it with input keys.

Let’s Try →

LibGDX Sprite Movement

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class MoveSprite extends ApplicationAdapter {
    private SpriteBatch batch;
    private Texture img;
    private float x = 100;
    private float y = 100;

    @Override
    public void create() {
        batch = new SpriteBatch();
        img = new Texture("player.png");
    }

    @Override
    public void render() {
        if (Gdx.input.isKeyPressed(Input.Keys.LEFT)) x -= 2;
        if (Gdx.input.isKeyPressed(Input.Keys.RIGHT)) x += 2;
        if (Gdx.input.isKeyPressed(Input.Keys.UP)) y += 2;
        if (Gdx.input.isKeyPressed(Input.Keys.DOWN)) y -= 2;

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        batch.draw(img, x, y);
        batch.end();
    }

    @Override
    public void dispose() {
        batch.dispose();
        img.dispose();
    }
}

Moves a texture sprite using arrow keys.

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LibGDX Clear Screen Color

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;

public class ColorFade extends ApplicationAdapter {
    private float r = 0;

    @Override
    public void render() {
        r += Gdx.graphics.getDeltaTime() * 0.1f;
        if (r > 1) r = 0;

        Gdx.gl.glClearColor(r, 0.2f, 0.5f, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
    }
}

Changes background color gradually using delta time.

Let’s Try →

LibGDX Animation Example

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Animation;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureRegion;

public class AnimationDemo extends ApplicationAdapter {
    private SpriteBatch batch;
    private Animation<TextureRegion> anim;
    private float state;

    @Override
    public void create() {
        batch = new SpriteBatch();
        Texture sheet = new Texture("walk.png");
        TextureRegion[][] frames = TextureRegion.split(sheet, 32, 32);
        anim = new Animation<>(0.1f, frames[0]);
        state = 0;
    }

    @Override
    public void render() {
        state += Gdx.graphics.getDeltaTime();
        TextureRegion frame = anim.getKeyFrame(state, true);

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        batch.draw(frame, 100, 100);
        batch.end();
    }
}

Plays a frame-based animation.

Let’s Try →

LibGDX Keyboard Text Input

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class TypeDemo extends ApplicationAdapter {
    private SpriteBatch batch;
    private BitmapFont font;
    private String text = "";

    @Override
    public void create() {
        batch = new SpriteBatch();
        font = new BitmapFont();
    }

    @Override
    public void render() {
        for (int i = 29; i < 127; i++) {
        if (Gdx.input.isKeyJustPressed(i)) text += (char)i;
        }

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        font.draw(batch, text, 50, 150);
        batch.end();
    }
}

Shows simple typed text on screen.

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LibGDX Timer Event

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.utils.Timer;

public class TimerExample extends ApplicationAdapter {
    private int counter = 0;

    @Override
    public void create() {
        Timer.schedule(new Timer.Task() {
        @Override
        public void run() {
        counter++;
        }
        }, 1, 1);
    }

    @Override
    public void render() {
        Gdx.app.log("Timer", "Counter: " + counter);
    }
}

Runs an action every second using a timer.

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LibGDX Mouse Tracker

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class MouseTracker extends ApplicationAdapter {
    private SpriteBatch batch;
    private BitmapFont font;

    @Override
    public void create() {
        batch = new SpriteBatch();
        font = new BitmapFont();
    }

    @Override
    public void render() {
        float x = Gdx.input.getX();
        float y = Gdx.input.getY();

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        font.draw(batch, "X:" + x + " Y:" + y, 50, 150);
        batch.end();
    }
}

Displays mouse coordinates.

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LibGDX Sound Playback

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.audio.Sound;

public class PlaySound extends ApplicationAdapter {
    private Sound beep;

    @Override
    public void create() {
        beep = Gdx.audio.newSound(Gdx.files.internal("beep.wav"));
    }

    @Override
    public void render() {
        if (Gdx.input.isKeyJustPressed(Input.Keys.SPACE)) beep.play();
    }

    @Override
    public void dispose() {
        beep.dispose();
    }
}

Plays a sound when SPACE is pressed.

Let’s Try →

LibGDX Touch Example

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;

public class TouchDemo extends ApplicationAdapter {
    @Override
    public void render() {
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        if (Gdx.input.justTouched()) {
        int x = Gdx.input.getX();
        int y = Gdx.input.getY();
        Gdx.app.log("Touch", x + "," + y);
        }
    }
}

Registers touch/click input and prints coordinates.

Let’s Try →

LibGDX Random Walker

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import java.util.Random;

public class RandomWalker extends ApplicationAdapter {
    private float x = 200;
    private float y = 200;
    private Random random;

    @Override
    public void create() {
        random = new Random();
    }

    @Override
    public void render() {
        x += random.nextInt(3) - 1;
        y += random.nextInt(3) - 1;

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
    }
}

Moves a point randomly each frame.

Let’s Try →

LibGDX FPS Display

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class FpsDemo extends ApplicationAdapter {
    private SpriteBatch batch;
    private BitmapFont font;

    @Override
    public void create() {
        batch = new SpriteBatch();
        font = new BitmapFont();
    }

    @Override
    public void render() {
        int fps = Gdx.graphics.getFramesPerSecond();
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        font.draw(batch, "FPS: " + fps, 30, 150);
        batch.end();
    }
}

Shows frames per second on screen.

Let’s Try →

Code Sample Descriptions

LibGDX Simple Counter Game

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class CounterGame extends ApplicationAdapter {
    private SpriteBatch batch;
    private BitmapFont font;
    private int count;

    @Override
    public void create() {
        batch = new SpriteBatch();
        font = new BitmapFont();
        count = 0;
    }

    @Override
    public void render() {
        if (Gdx.input.isKeyJustPressed(Input.Keys.UP)) count++;
        if (Gdx.input.isKeyJustPressed(Input.Keys.DOWN)) count--;

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        font.draw(batch, "Count: " + count, 100, 150);
        batch.end();
    }

    @Override
    public void dispose() {
        batch.dispose();
        font.dispose();
    }
}

A basic LibGDX example that displays a counter and increments/decrements it with input keys.

Let’s Try →

LibGDX Sprite Movement

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class MoveSprite extends ApplicationAdapter {
    private SpriteBatch batch;
    private Texture img;
    private float x = 100;
    private float y = 100;

    @Override
    public void create() {
        batch = new SpriteBatch();
        img = new Texture("player.png");
    }

    @Override
    public void render() {
        if (Gdx.input.isKeyPressed(Input.Keys.LEFT)) x -= 2;
        if (Gdx.input.isKeyPressed(Input.Keys.RIGHT)) x += 2;
        if (Gdx.input.isKeyPressed(Input.Keys.UP)) y += 2;
        if (Gdx.input.isKeyPressed(Input.Keys.DOWN)) y -= 2;

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        batch.draw(img, x, y);
        batch.end();
    }

    @Override
    public void dispose() {
        batch.dispose();
        img.dispose();
    }
}

Moves a texture sprite using arrow keys.

Let’s Try →

LibGDX Clear Screen Color

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;

public class ColorFade extends ApplicationAdapter {
    private float r = 0;

    @Override
    public void render() {
        r += Gdx.graphics.getDeltaTime() * 0.1f;
        if (r > 1) r = 0;

        Gdx.gl.glClearColor(r, 0.2f, 0.5f, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
    }
}

Changes background color gradually using delta time.

Let’s Try →

LibGDX Animation Example

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Animation;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureRegion;

public class AnimationDemo extends ApplicationAdapter {
    private SpriteBatch batch;
    private Animation<TextureRegion> anim;
    private float state;

    @Override
    public void create() {
        batch = new SpriteBatch();
        Texture sheet = new Texture("walk.png");
        TextureRegion[][] frames = TextureRegion.split(sheet, 32, 32);
        anim = new Animation<>(0.1f, frames[0]);
        state = 0;
    }

    @Override
    public void render() {
        state += Gdx.graphics.getDeltaTime();
        TextureRegion frame = anim.getKeyFrame(state, true);

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        batch.draw(frame, 100, 100);
        batch.end();
    }
}

Plays a frame-based animation.

Let’s Try →

LibGDX Keyboard Text Input

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class TypeDemo extends ApplicationAdapter {
    private SpriteBatch batch;
    private BitmapFont font;
    private String text = "";

    @Override
    public void create() {
        batch = new SpriteBatch();
        font = new BitmapFont();
    }

    @Override
    public void render() {
        for (int i = 29; i < 127; i++) {
        if (Gdx.input.isKeyJustPressed(i)) text += (char)i;
        }

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        font.draw(batch, text, 50, 150);
        batch.end();
    }
}

Shows simple typed text on screen.

Let’s Try →

LibGDX Timer Event

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.utils.Timer;

public class TimerExample extends ApplicationAdapter {
    private int counter = 0;

    @Override
    public void create() {
        Timer.schedule(new Timer.Task() {
        @Override
        public void run() {
        counter++;
        }
        }, 1, 1);
    }

    @Override
    public void render() {
        Gdx.app.log("Timer", "Counter: " + counter);
    }
}

Runs an action every second using a timer.

Let’s Try →

LibGDX Mouse Tracker

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class MouseTracker extends ApplicationAdapter {
    private SpriteBatch batch;
    private BitmapFont font;

    @Override
    public void create() {
        batch = new SpriteBatch();
        font = new BitmapFont();
    }

    @Override
    public void render() {
        float x = Gdx.input.getX();
        float y = Gdx.input.getY();

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        font.draw(batch, "X:" + x + " Y:" + y, 50, 150);
        batch.end();
    }
}

Displays mouse coordinates.

Let’s Try →

LibGDX Sound Playback

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.audio.Sound;

public class PlaySound extends ApplicationAdapter {
    private Sound beep;

    @Override
    public void create() {
        beep = Gdx.audio.newSound(Gdx.files.internal("beep.wav"));
    }

    @Override
    public void render() {
        if (Gdx.input.isKeyJustPressed(Input.Keys.SPACE)) beep.play();
    }

    @Override
    public void dispose() {
        beep.dispose();
    }
}

Plays a sound when SPACE is pressed.

Let’s Try →

LibGDX Touch Example

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;

public class TouchDemo extends ApplicationAdapter {
    @Override
    public void render() {
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        if (Gdx.input.justTouched()) {
        int x = Gdx.input.getX();
        int y = Gdx.input.getY();
        Gdx.app.log("Touch", x + "," + y);
        }
    }
}

Registers touch/click input and prints coordinates.

Let’s Try →

LibGDX Random Walker

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import java.util.Random;

public class RandomWalker extends ApplicationAdapter {
    private float x = 200;
    private float y = 200;
    private Random random;

    @Override
    public void create() {
        random = new Random();
    }

    @Override
    public void render() {
        x += random.nextInt(3) - 1;
        y += random.nextInt(3) - 1;

        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
    }
}

Moves a point randomly each frame.

Let’s Try →

LibGDX FPS Display

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;

public class FpsDemo extends ApplicationAdapter {
    private SpriteBatch batch;
    private BitmapFont font;

    @Override
    public void create() {
        batch = new SpriteBatch();
        font = new BitmapFont();
    }

    @Override
    public void render() {
        int fps = Gdx.graphics.getFramesPerSecond();
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();
        font.draw(batch, "FPS: " + fps, 30, 150);
        batch.end();
    }
}

Shows frames per second on screen.

Let’s Try →