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在这里，我想在没有用户输入的情况下水平移动这个动画矩形，使用计时器，也许？动画矩形应该左右移动（从起点到终点，整个路径 = 315 像素）。我的意思是点 1（从左侧开始）和点 2（在右侧结束）之间有 315 个像素。这是我的代码： 变量：

        //Sprite Texture
        Texture2D texture;
        //A Timer variable
        float timer = 0f;
        //The interval (300 milliseconds)
        float interval = 300f;
        //Current frame holder (start at 1)
        int currentFrame = 1;
        //Width of a single sprite image, not the whole Sprite Sheet
        int spriteWidth = 32;
        //Height of a single sprite image, not the whole Sprite Sheet
        int spriteHeight = 32;
        //A rectangle to store which 'frame' is currently being shown
        Rectangle sourceRect;
        //The centre of the current 'frame'
        Vector2 origin;

接下来，在LoadContent()方法中：

       //Texture load
       texture = Content.Load<Texture2D>("gameGraphics\\Enemies\\Sprite");

Update()方法：

    //Increase the timer by the number of milliseconds since update was last called
    timer += (float)gameTime.ElapsedGameTime.TotalMilliseconds;
    //Check the timer is more than the chosen interval
    if (timer > interval)
    {
        //Show the next frame
        currentFrame++;
        //Reset the timer
        timer = 0f;
    }
    //If we are on the last frame, reset back to the one before the first frame (because currentframe++ is called next so the next frame will be 1!)
    currentFrame = currentFrame % 2;
    sourceRect = new Rectangle(currentFrame * spriteWidth, 0, spriteWidth, spriteHeight);
    origin = new Vector2(sourceRect.Width / 2, sourceRect.Height / 2);

最后，Draw()方法：

    //Texture Draw
    spriteBatch.Draw(texture, new Vector2(263, 554), sourceRect,Color.White, 0f, origin, 1.0f, SpriteEffects.None, 0);

所以我想搬家sourceRect。Ir 必须左右循环。

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1 回答 1

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您的spriteBatch.Draw()通话一直使用相同的值destinationRectangle。你希望它如何移动？例如，每帧右侧 5 个像素？只需将您的destinationRectangle（第二个参数spriteBatch.Draw()）更改为：

new Vector2(263 + (currentFrame * 5), 554);

编辑：评论中要求的示例

class Foo
{
    int x;
    int maxX = 400;

    void Update(GameTime gameTime)
    {
        if (x++ >= maxX)
            x = 263;
    }

    void Draw()
    {
        spriteBatch.Draw(texture, new Vector2(263 + x, 554), sourceRect,Color.White, 0f, origin, 1.0f, SpriteEffects.None, 0);
    }
}

当然，除了 spriteBatch.Draw() 调用之外，您将保留所有当前代码；您只需添加x零件。

于 2013-08-07T17:33:55.743 回答