通過傾斜設備移動節點

Question

我想通過左右傾斜設備來移動球體。我現在的代碼正在工作，除了我必須上下傾斜設備 - 而我狀態data.acceleration.y - > Y軸？

這裏是我的代碼：

motionManager = [[CMMotionManager alloc] init]; 
if ([motionManager isAccelerometerAvailable] == YES) { 
    [motionManager startAccelerometerUpdatesToQueue:[[NSOperationQueue alloc] init] 
             withHandler:^(CMAccelerometerData *data, NSError *error) 
    { 
     float destX, destY; 
     float currentX = sphereNode.position.x; 
     float currentY = sphereNode.position.y; 
     BOOL shouldMove = NO; 

     if(data.acceleration.y < -0.25) { // tilting the device to the right 
      destX = currentX + (data.acceleration.y * kPlayerSpeed); 
      destY = currentY; 
      shouldMove = YES; 
     } else if (data.acceleration.y > 0.25) { // tilting the device to the left 
      destX = currentX + (data.acceleration.y * kPlayerSpeed); 
      destY = currentY; 
      shouldMove = YES; 
     } 
     if(shouldMove) { 
      SKAction *action = [SKAction moveTo:CGPointMake(destX, destY) duration:1]; 
      [sphereNode runAction:action]; 
     } 
    }]; 
} 

任何幫助，非常感謝！

Answer 1

Y軸確實與設備的頂部和底部對齊。您很可能正在查找CMAccelerometerData數據對象的x軸。

這一切都在Event handling guide for iOS : Motion Events文檔中解釋。

也許看看一些教程（如iOS Programming Recipe 19: Using Core Motion to Access Gyro and Accelerometer）也可以幫助你。