GAME DESIGN IN LIBGDX

GUIDE – MOVABLE IMAGE

DESCRIPTION

This basic code simply uses the Still Image code from the previous example and shows how to make the image move using the arrow keys.

CODE

public class MovableImageDemo extends ApplicationAdapter

{

private SpriteBatch batch;

private Texture texture;

private Sprite sprite;

private float shipX;

private float shipY;

@Override

public void create ()

{

batch = new SpriteBatch();

texture = new Texture(Gdx.files.internal("blueship64.png"));

sprite = new Sprite(texture);

shipX = 100;

shipY = (Gdx.graphics.getHeight() - 64) /2; //64 is img height

}

@Override

public void dispose()

{

batch.dispose();

texture.dispose();

}

@Override

public void render()

{

//UPDATE

if(Gdx.input.isKeyPressed(Input.Keys.UP))

{

shipY = shipY + 5;

}

if(Gdx.input.isKeyPressed(Input.Keys.DOWN))

{

shipY = shipY - 5;

}

if(Gdx.input.isKeyPressed(Input.Keys.LEFT))

{

shipX = shipX - 5;

}

if(Gdx.input.isKeyPressed(Input.Keys.RIGHT))

{

shipX = shipX + 5;

}

//Clear screen

Gdx.gl.glClearColor(0, 0, 0, 1);

Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

//Render

batch.begin();

sprite.setPosition(shipX, shipY);

sprite.draw(batch);

batch.end();

}

}

JAR FILE

Click here.