在 Cocos2d (Android, JAVA) 中,我使用 CCRotateBy 来旋转一个 CCNode,其中包含多个图块作为子节点。我想使用中心瓷砖的中心作为旋转点,所以我想我会使用 Anchorpoint。
但是,我给锚点赋予什么值并不重要,瓷砖会一直围绕我的屏幕左下角旋转。怎么来的?
(瓦片是CCNodes,收集在两个列表中,tilesSelected和secondaryTilesSelected)
// I create one node which holds all the tiles I want to rotate
CCNode tilesToRotate = CCNode.node();
tilesToRotate.addChild(tilesSelected.get(0), 0, 99);
// then, I add the 4 tiles around the previous, center tile
for (int i=0; i < secondaryTilesSelected.size(); i++){
tilesToRotate.addChild(secondaryTilesSelected.get(i), 0, 99);
}
// So, if I change 700,700 hereunder to different values, it doesn't change the centerpoint for Rotation. I guess I don't get it...
addChild(tilesToRotate);
tilesToRotate.setAnchorPoint(CGPoint.make(700,700));
CCAction r90 = CCRotateBy.action(1f, 90f);
tilesToRotate.runAction(r90);