為什么我的精靈沒有用加速度計移動？

Question

我已經嘗試解決這個問題了好幾個小時，沒有運氣。 我試圖讓我的CCSprite子類（thePlayer）相對於設備的傾斜度沿Y軸在屏幕上移動。 我之前已經做過了，一切都應該正常工作，但是由於某種原因卻沒有。 這是代碼：

- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
{
    CGSize WinSize = [[CCDirector sharedDirector] winSize];
#define kFilteringFactor 0.1
#define kRestAccelX -0.6
#define kShipMaxPointsPerSec (WinSize.height*0.5)        
#define kMaxDiffX 0.2
    UIAccelerationValue rollingX, rollingY, rollingZ;
    rollingX = (acceleration.x * kFilteringFactor) + (rollingX * (1.0 - kFilteringFactor));
    float accelX = acceleration.x - rollingX;
    float accelDiff = accelX - kRestAccelX;
    float accelFraction = accelDiff / kMaxDiffX;
    float pointsPerSec = kShipMaxPointsPerSec * accelFraction;
    _shipPointsPerSecY = pointsPerSec;
    //CCLOG(@"PointsPerSec: %f", _shipPointsPerSecY);
    CGPoint pos = thePlayer.position;
    pos.y += _shipPointsPerSecY;
    CCLOG(@"Pos.y: %f", pos.y);
    thePlayer.position = pos;
}

- (void)update:(ccTime)dt
{
    CGSize WinSize = [[CCDirector sharedDirector] winSize];
    float maxY = WinSize.height - thePlayer.contentSize.height / 2;
    float minY = thePlayer.contentSize.height/2;
    float derp = _shipPointsPerSecY;
    //CCLOG(@"Derp: %f", derp);
    float newY = thePlayer.position.y + (_shipPointsPerSecY * dt);
    //CCLOG(@"NewY: %f", newY);
    newY = MIN(MAX(newY, minY), maxY);
    thePlayer.position = ccp(thePlayer.position.x, newY);
    //CCLOG(@"Player position Y: %f", thePlayer.position.y);
}

這可能是我遇到過的第二個最煩人的問題，感謝您的幫助。

Answer 1

看來您的pos.y最終將根據acceleration.x x進行調整； 只是想確保您不會混淆X和Y值。

還要注意，來自加速度計的X和Y通常與屏幕的相同對齊方式有關，而與屏幕的方向無關。 因此，在橫向環境中，acceleration.x實際上是您的Y值，反之亦然。 如果在這里也適用。