Ray的Zombie Conga问题

Question

大家好，我正在使用他为“僵尸康加”购买的书中的Ray Wenderlich代码。好吧，他让僵尸四处移动，这就是为什么让他的[自我启动动画]确实有意义;函数在movePlayerForward方法中运行。但我的问题是我的播放器没有移动，但拍摄停留在同一个位置，但我有拍摄动画，但它没有正常运行。那么我应该把[self startAnimatin] cal和[self stopAnimationCall]放在我编辑的代码中我很困惑。

- (void) Player {
_Player = [SKSpriteNode spriteNodeWithImageNamed:@"player1"];
_Player.xScale = 0.09;
_Player.yScale = 0.09;
_Player.position = CGPointMake(self.size.width/4, self.size.height/2);
_Player.zPosition = 1;
[self addChild:_Player];
// 1
NSMutableArray *PlayerCh = [NSMutableArray arrayWithCapacity:10];
// 2
for (int i = 1; i < 3; i++) {
    NSString *mytextureName = [NSString stringWithFormat:@"player%d", i];
    SKTexture *ItsTexture = [SKTexture textureWithImageNamed:mytextureName];
    [PlayerCh  addObject:ItsTexture];
}
// 3
for (int i = 3; i > 1; i--) {
    NSString *mytextureName = [NSString stringWithFormat:@"player%d", i];
    SKTexture *ItsTexture = [SKTexture textureWithImageNamed:mytextureName];
    [PlayerCh addObject:ItsTexture];
}
// 4
_PlayerAnimation = [SKAction animateWithTextures:PlayerCh timePerFrame:0.1];

} 


- (void) startPlayerAnimation {
    if (![_Player actionForKey:@"animation"]) {
          [_Player runAction:[SKAction repeatActionForever:_PlayerAnimation]  
          withKey:@"animation"];
       }
  }
- (void) stopPlayerAnimation {
       [_Player removeActionForKey:@"animation"];
}



- (void) update:(NSTimeInterval)currentTime {
if (_lastUpdateTime) {
    _dt = currentTime - _lastUpdateTime;
}
else {
    _dt = 0;
     }
_lastUpdateTime = currentTime;
CGPoint offset = CGPointSubtract(_lastTouchLocation, _Player.position);
float distance = CGPointLength(offset);
if (distance < PLAYER_MOVE_POINTS_PER_SEC * _dt) {
    _velocity = CGPointZero;

}
else
{
    [self rotateSprite:_Player toFace:_velocity   
    rotateRadiansPerSec:PLAYER_ROTATE_RADIANS_PER_SEC*_dt*2];
    [self stopPlayerAnimation];
    //
}
}
- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
        UITouch *touch = [touches anyObject];
        CGPoint touchLocation = [touch locationInNode:self.scene];
        [self movePlayerToward:touchLocation];
        [self startPlayerAnimation];
}
- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
        UITouch *touch = [touches anyObject];
        CGPoint touchLocation = [touch locationInNode:self.scene];
        [self movePlayerToward:touchLocation];
        SKSpriteNode *bullet = [SKSpriteNode spriteNodeWithImageNamed:@"mybullet"];
        bullet.xScale = 0.08;
        bullet.yScale = 0.08;
        bullet.position = _Player.position;
        bullet.zPosition = 0;
        CGPoint offset = rwSub(touchLocation, bullet.position);
        if (offset.x <= 0) return;
        [self addChild:bullet];
        CGPoint direction = rwNormalize(offset);
        CGPoint shootAmount = rwMult(direction, 400);
        CGPoint realDest = rwAdd(shootAmount, bullet.position);
        float velocity = 480.0/1.0;
        float realMoveDuration = self.size.width / velocity;
        SKAction * actionMove = [SKAction moveTo:realDest duration:realMoveDuration];
        SKAction * actionMoveDone = [SKAction removeFromParent];
        [bullet runAction:[SKAction sequence:@[actionMove, actionMoveDone]]];
}