如何使用 LibGDX 实现水平滚动？

Question

我想编写一个类似于旧 "Warfare 1917" 浏览器游戏的游戏。我卡在滚动部分了。

我会尝试用 gif 解释我想要的内容：

我搜索并尝试了一整天的所有方法，但我无法找到任何真正的解决方案。我希望你能明白我在做什么。

Answer 1

我认为这应该可以解决问题

public class MovingCamera extends InputAdapter {

    OrthographicCamera camera;    // The camera to be moved
    float pivotX;                 // The pivot for the movement

    public MovingCamera() {
        camera = new OrthographicCamera(); // Initialize camera
    }

    // Create a pivot
    @Override
    public boolean touchDown(int screenX, int screenY, int pointer, int button) {
        Vector3 unprojected = camera.unproject(new Vector3(screenX, screenY, 0)); // Convert from pixel to world coordinates
        pivotX = unprojected.x;                                                   // Save first finger touch on screen (Will serve as a pivot)
        return true;                                                              // Input has been processed
    }

    // Move the camera
    @Override
    public boolean touchDragged(int screenX, int screenY, int pointer) {
        Vector3 unprojected = camera.unproject(new Vector3(screenX, screenY, 0)); // Convert from pixel to world coordinates
        camera.position.x += unprojected.x - pivotX;                              // Change camera position
        camera.update();                                                          // Apply changes
        return true;                                                              // Input has been processed
    }
}

并且在您的渲染方法中：

public void render(SpriteBatch spriteBatch) {
    spriteBatch.setProjectionMatrix(camera.combined); // Let the Sprite Batch use the camera
    spriteBatch.begin();
    // [Draw your Textures, TextureRegions, Sprites, etc...]
    spriteBatch.end();
}

Answer 2

因为移动相机是一种不好的做法，最好移动一个图层（你的精灵的容器）或者你可以尝试 ScrollPane，WidgetGroup 的实现

见https://libgdx.badlogicgames.com/ci/nightlies/docs/api/com/badlogic/gdx/scenes/scene2d/ui/ScrollPane.html

p.s。在 v.1.9.11

上测试

如何使用 LibGDX 实现水平滚动？

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