import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.InputAdapter;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.math.Vector3;


public class SBGame extends ApplicationAdapter {

	Vector3 temp = new Vector3();

	OrthographicCamera camera;

	SpriteBatch batch;
	Texture texture, textureTwo;
	Sprite sprite, spriteTwo, spriteThree;

    Ball ball = new Ball(100, 100);
    Enemy enemy = new Enemy(150, 150);




	@Override
	public void create () {
		camera = new OrthographicCamera();
		camera.setToOrtho(false);
		batch = new SpriteBatch();


		texture = new Texture(Gdx.files.internal("ball.png"));
		textureTwo = new Texture(Gdx.files.internal("enemy.png"));

		sprite = new Sprite(texture);
		spriteTwo = new Sprite(textureTwo);

		Gdx.input.setInputProcessor(new InputAdapter() {
			@Override
			public boolean touchDown (int screenX, int screenY, int pointer, int button) {
				camera.unproject(temp.set(screenX, screenY, 0));
				ball.moveTo(temp.x, temp.y);
				return true;
			}
		});
	}

	@Override
	public void render () {
		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
		ball.update(Gdx.graphics.getDeltaTime());
		enemy.update(Gdx.graphics.getDeltaTime());
		sprite.setPosition(ball.position.x, ball.position.y);
		sprite.setSize(ball.getHeight(), ball.getWidth());
		spriteTwo.setPosition(enemy.positionTwo.x, enemy.positionTwo.y);
		spriteTwo.setSize(enemy.getHeight(), enemy.getWidth());
		batch.begin();
		sprite.draw(batch);
		spriteTwo.draw(batch);
		batch.end();
	}

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


}

class Ball {

	Vector2 position = new Vector2();
	Vector2 velocity = new Vector2();
	Vector2 movement = new Vector2();
	Vector2 target = new Vector2();
	Vector2 dir = new Vector2();
	private float width;
    private float height;
	float speed = 100;

	public Ball (float x, float y) {
		position.set(x, y);
		target.set(x,y);
		this.width = 10;
        this.height = 10;
	}



	public float getWidth() {
        return width;
    }

    public float getHeight() {
        return height;
    }

	public void update (float deltaTime) {
		movement.set(velocity).scl(deltaTime);
		if (position.dst2(target) > movement.len2()) {
			position.add(movement);
		} else {
			position.set(target);
		}


	}

	public void moveTo (float x, float y) {
		dir.set(target.set(x,y)).sub(position).nor();
		velocity.set(dir).scl(speed);
	}

}


class Enemy {

	private Ball ball;

	Vector2 positionTwo = new Vector2();
	Vector2 velocityTwo = new Vector2();
	Vector2 movementTwo = new Vector2();
	Vector2 targetTwo = new Vector2();
	Vector2 dirTwo = new Vector2();

	private float width;
    private float height;
	float speed = 50;

	public Enemy (float x, float y)
	{
		positionTwo.set(x, y);
		targetTwo.set(x,y);
		this.width = 5;
        this.height = 5;

	}

	public float getWidth() {
        return width;
    }

    public float getHeight() {
        return height;
    }

    public void update (float deltaTime) {

    	movementTwo.set(velocityTwo).scl(deltaTime);
		if (positionTwo.dst2(targetTwo) > movementTwo.len2()) {
			positionTwo.add(movementTwo);
		} else {
			positionTwo.set(targetTwo);
		}


	}

    public void moveTo (float x, float y) {
    	dirTwo.set(targetTwo.set(x,y)).sub(positionTwo).nor();
		velocityTwo.set(dirTwo).scl(speed);



    }

}