Question

我刚开始一个XNA项目，我想在Monogame中用Atari制作Asteroids。目前，我有船的运动。我刚刚修改了代码中的一些内容。现在的问题是小行星。我正在尝试研究如何制作它们，但我没有任何好的结果。

我的代码：

private Texture2D texture;
    private Rectangle destinationRectangle;
    private Rectangle sourceRectangle;
    private float rotationSpeed;
    private Vector2 rotationOrigin;
    private float rotationAngle;
    private float speed;
    private Vector2 velocity;

    public Asteroide(Texture2D texture, int x, int y)
    {

    }
    public Asteroide(Texture2D texture, int x, int y, int width, int height, float speed, float rotationSpeed)
    {
        this.texture = texture;
        this.rotationSpeed = rotationSpeed;
        destinationRectangle = new Rectangle(x - width / 2, y - height / 2, width, height);
        sourceRectangle = new Rectangle(0, 0, width, height);
        rotationOrigin = new Vector2(texture.Width * 0.5f, texture.Height * 0.5f);
        this.speed = speed;
        Random rnd = new Random();
        int degree = rnd.Next(-45, 46);
        double radian = degree * Math.PI / 180;
        ChangeAngle(radian);

    }

    public void ChangeAngle(double radian)
    {
        velocity.X = (float)Math.Cos(radian) * speed;
        velocity.Y = -1f * (float)Math.Sin(radian) * speed;
    }

    public void Update(GameTime gameTime)
    {
        Move(gameTime);

    }
    private void Move(GameTime gameTime)
    {
        destinationRectangle.X += (int)(velocity.X * gameTime.ElapsedGameTime.TotalSeconds);
        destinationRectangle.Y += (int)(velocity.Y * gameTime.ElapsedGameTime.TotalSeconds);
    }
    private void Rotation(GameTime gameTime)
    {
        rotationAngle += rotationSpeed * (float) gameTime.ElapsedGameTime.TotalSeconds;
    }

    public void Draw(SpriteBatch spriteBatch)
    {
        spriteBatch.Draw(texture, destinationRectangle, sourceRectangle, Color.White, rotationAngle, rotationOrigin, SpriteEffects.None, 0f);
    }

我想要的是一颗不断移动并产生各种尺寸小行星的小行星。它们应覆盖大，中，小尺寸的所有屏幕。我知道我必须在某处使用Random，但我不知道在哪里。

小行星运动 - XNA小行星克隆

0 个答案: