how to run actions on multiple sprites at the same time - memory

Question

I'm new to cocos2d. I'm writing my first app. But I have a problem I can't solve it. The problem is that when I move multiple sprites, the others are OK except the last one. I want my sprites will run actions at the same time. But I don't know how to fix it. Any ideas or advice about promoting my code. Thanks.
Here's my code.
-(void) setHeadFace:(Face *)headFace moveFrom:(CGPoint)startPosition moveTo:(CGPoint)endPosition`
{
CCMoveTo *moveOut = [CCMoveTo actionWithDuration:0.2f position:startPosition];
CCScaleTo *scaleTo = [CCScaleTo actionWithDuration:0.2f scale:0.0f];
CCSpawn *moveFrom = [CCSpawn actions:moveOut,scaleTo,nil];
CCMoveTo *moveTo = [CCMoveTo actionWithDuration:0.0f position:endPosition];
CCSequence *headAction = [CCSequence actions:moveFrom,moveTo,nil];
[headFace.faceSprite runAction:headAction];
}
-(void) setMidlFace:(Face *)curtFace moveTo:(CGPoint)movePosition nextFace:(Face *)nextFace
{
CCMoveTo *moveTo = [CCMoveTo actionWithDuration:0.2f position:movePosition];
CCSequence *moveAction = [CCSequence actions:moveTo,nil];
[curtFace.faceSprite runAction:moveAction];
nextFace.faceSprite = curtFace.faceSprite;
nextFace.faceType = curtFace.faceType;
[nextFace.faceSprite setPosition:movePosition];
}
-(void) setTailFace:(Face *)tailFace moveTo:(CGPoint)movePosition
byGuardSprite:(CCSprite *)guardSprite`
{
CCDelayTime *delay = [CCDelayTime actionWithDuration:0.2f];
CCMoveTo *moveIn = [CCMoveTo actionWithDuration:0.2f position:movePosition];
CCScaleTo *scaleTo = [CCScaleTo actionWithDuration:0.2f scale:1.0f];
CCSpawn *moveTo = [CCSpawn actions:moveIn,scaleTo,nil];
CCCallBlock *touchBlock =[CCCallBlock actionWithBlock:^{
tailFace.faceSprite = guardSprite;
tailFace.faceType = guardSprite.tag;
tailFace.faceSprite.tag = -1;
isTouch = YES;
}];
CCSequence *tailAction=[CCSequence actions:delay,moveTo,touchBlock,nil];
[guardSprite runAction:tailAction];
}
-(void) moveFaces:(Face *)face direction:(int)direction`
{
CCSprite *guardSprite = nil;
CGPoint movePosition;
CGPoint curtPosition;
CGPoint startPosition;
CGPoint endPosition;
int x = face.cdX;
int y = face.cdY;
CGFloat width = faceGrid[x][0].position.x;
CGFloat height = faceGrid[0][y].position.y;
switch (direction) {
case MOVE_DOWN:
CCLOG(#"move down:direction %d", direction);
movePosition = CGPointMake(width,faceGrid[x][0].position.y);
//move the first face out of the grid
startPosition = CGPointMake(width,faceGrid[x][0].position.y-GRID_OFFSET.y/2);
endPosition = CGPointMake(width,faceGrid[x][GRID_HEIGHT-1].position.y+GRID_OFFSET.y/2);
[self setHeadFace:faceGrid[x][0] moveFrom:startPosition moveTo:endPosition];
guardSprite = faceGrid[x][0].faceSprite;
guardSprite.tag = faceGrid[x][0].faceType;
for (int j=1; j<GRID_HEIGHT; j++)
{
curtPosition=CGPointMake(width,faceGrid[x][j].position.y);
//move the middle face to the next face
[self setMidlFace:faceGrid[x][j] moveTo:movePosition nextFace:faceGrid[x][j-1]];
movePosition = curtPosition;
}
//use the guard face to set the last face's move action
[self setTailFace:faceGrid[x][GRID_HEIGHT-1] moveTo:movePosition byGuardSprite:guardSprite];
break;
......
}

Answer 1

I used tick function for same purpose.
-(void)onEnter
{
[super onEnter];
self.isTouchEnabled = true;
[self schedule: #selector(tick:)];
}
-(void) tick: (ccTime) dt
{
CGPoint pos = head.position ;
head.position = ccp(pos.x+gameSpeed, pos.y);
pos = tail.position ;
tail.position = ccp(pos.x+gameSpeed, pos.y);
}