War*_*rdS 5 java android libgdx scene2d
我问过4天前的问题.得到了一些帮助,现在我的代码看起来像
ColorAction actionBtG = new ColorAction();
ColorAction actionGtB = new ColorAction();
SequenceAction sequenceAction;
RepeatAction repeatAction = new RepeatAction();
ShapeRenderer shapeRenderer;
Color blue = new Color(Color.BLUE);
@Override
public void create () {
shapeRenderer = new ShapeRenderer();
actionBtG.setColor(blue);
actionBtG.setEndColor(Color.GOLD);
actionBtG.setDuration(5);
actionGtB.setColor(blue);
actionGtB.setEndColor(Color.BLUE);
actionGtB.setDuration(5);
sequenceAction = new sequenceAction(actionBtG,actionGtB);
repeatAction = new RepeatAction():
repeatAction.setAction(sequenceAction);
repeatAction.setCount(RepeatAction.FOREVER);
}
@Override
public void render () {
repeatAction.act(Gdx.graphics.getDeltaTime());
Gdx.gl.glClearColor(1,1,1,1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
shapeRenderer.begin(ShapeRenderer.ShapeType.Filled);
shapeRenderer.setColor(blue);
shapeRenderer.rect(100, 100, 40, 40);
shapeRenderer.end();
}
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但它仍然有效.它会动作一次并停止.当我需要循环时.从蓝色到金色,然后从金色到蓝色.我真的很感激任何帮助,因为我只是在学习libGDX.谢谢.
我已经阅读了所有答案并编辑了我的代码,但它仍然无效:
private Actor actionManager = new Actor();
ColorAction actionBtG = new ColorAction();
ColorAction actionGtB = new ColorAction();
SequenceAction sequenceAction;
RepeatAction repeatAction;
Color activeColor = new Color(Color.BLUE);
ShapeRenderer shapeRenderer;
@Override
public void create () {
shapeRenderer = new ShapeRenderer();
actionBtG.setColor(activeColor);
actionBtG.setEndColor(Color.GOLD);
actionBtG.setDuration(5);
actionGtB.setColor(activeColor);
actionGtB.setEndColor(Color.BLUE);
actionGtB.setDuration(5);
sequenceAction = new SequenceAction(actionBtG,actionGtB);
repeatAction = new RepeatAction();
repeatAction.setAction(sequenceAction);
repeatAction.setCount(RepeatAction.FOREVER);
actionManager.addAction(repeatAction);
}
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这是render()
@Override
public void render () {
Gdx.gl.glClearColor(1, 1, 1, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
actionManager.act(Gdx.graphics.getDeltaTime());
shapeRenderer.begin(ShapeRenderer.ShapeType.Filled);
shapeRenderer.setColor(blue);
shapeRenderer.rect(100, 100, 40, 40);
shapeRenderer.end();
}
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现在它不会改变颜色,它总是蓝色的.
您遇到了与期望与 Actor 一起使用的操作相关的错误。许多 Action 在没有 Actor 的情况下也能正常工作,但 SequenceAction 却不能,因为它希望附加到 Actor 来检测它是否仍应运行。
因此,一个有点hacky的解决方案是在设置时将虚拟演员添加到您的顶级操作中。这模拟了当您向舞台中的演员添加动作时发生的情况。
repeatAction.setActor(new Actor());
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如果您计划在应用程序中使用更多操作,则可以创建一个用于管理所有操作的 Actor:
private Actor actionManager = new Actor();
//when creating actions:
actionManager.addAction(repeatAction);
//In render(), use this instead of calling act on individual actions
//It will call act on all actions in the actor:
actionManager.act(Gdx.graphics.getDeltaTime());
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当然,如果您想使用舞台来绘制东西,您可以简单地将动作添加到舞台,而不是使用 Actor 作为动作管理器。
我个人认为 scene2d Actions 一定比 UniversalTweenEngine 更容易使用和设置。