Spritekit pause and resume SKSpriteNode's action by touchesBegan - sprite-kit

Question

I have a SKSpriteNode with a repeated movement, let me call it RunAction A, e.g goes up - down. Now I want to make a movement, letz call it RunAction B, left - middle - right - middle, by touchesBegan.
And after finishing RunAction B, RunAction A should resume. It should start an the position, where RunAction B did start and did stop.
If I use (attention pseudo lang.)
[sprite RunAction A]
[sprite setPaused: True]
[sprite RunAction B]
[sprite setPaused: False]
I can see, sprite has never paused!
Is it possible, to let the sprite let resume the action where it stops before?
Thanks

Answer 1

#import "GameScene.h"
#implementation GameScene
-(void)didMoveToView:(SKView *)view {
/* Setup your scene here */
SKLabelNode *myLabel = [SKLabelNode labelNodeWithFontNamed:#"Chalkduster"];
myLabel.text = #"Hello, World!";
myLabel.fontSize = 65;
myLabel.position = CGPointMake(CGRectGetMidX(self.frame),
CGRectGetMidY(self.frame));
NSString *myParticlePath = [[NSBundle mainBundle] pathForResource:#"fireflies" ofType:#"sks"];
SKEmitterNode *myParticle = [NSKeyedUnarchiver unarchiveObjectWithFile:myParticlePath];
[self addChild:myParticle];
self.physicsWorld.gravity=CGVectorMake(0.0, -9);
self.physicsBody=[SKPhysicsBody bodyWithEdgeLoopFromRect:self.frame];
self.physicsBody.linearDamping=0.0;
SKSpriteNode *rectNode=[SKSpriteNode spriteNodeWithColor:[SKColor greenColor] size:CGSizeMake(50, 50)];
rectNode.name=#"rect";
rectNode.position=CGPointMake(300, 300);
[self addChild:rectNode];
[self moveAction];
}
-(SKAction*)groupAction:(CGPoint)points
{
SKAction *A=[SKAction moveTo:CGPointMake(points.x+100, points.y+100) duration:1];
SKAction *B=[SKAction moveTo:CGPointMake(500, 100) duration:1];
SKAction *C=[SKAction moveTo:CGPointMake(100, 100) duration:1];
SKAction *s=[SKAction sequence:#[A,B,C]];
return s;
}
-(void)moveRect:(SKNode*)node
{
[node runAction:[SKAction repeatActionForever:[self groupAction:node.position]] withKey:#"moveAction"];
}
-(void)moveAction
{
[self enumerateChildNodesWithName:#"rect" usingBlock:^(SKNode *node, BOOL *stop) {
[self moveRect:node];
}];
}
-(void)clearAction
{
[self enumerateChildNodesWithName:#"rect" usingBlock:^(SKNode *node, BOOL *stop) {
[node removeActionForKey:#"moveAction"];
}];
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
/* Called when a touch begins */
for (UITouch *touch in touches) {
CGPoint location = [touch locationInNode:self];
if(!_stop)
{
[self clearAction];
_stop=TRUE;
}
else
{
[self moveAction];
_stop=FALSE;
}
/*
SKSpriteNode *sprite = [SKSpriteNode spriteNodeWithImageNamed:#"Spaceship"];
sprite.physicsBody.allowsRotation=FALSE;
sprite.physicsBody=[SKPhysicsBody bodyWithRectangleOfSize:CGSizeMake(sprite.size.width, sprite.size.height)];
sprite.physicsBody.friction=0.0;
sprite.physicsBody.linearDamping=0.0;
sprite.physicsBody.restitution=1.0;
sprite.xScale = 0.5;
sprite.yScale = 0.5;
sprite.position = location;
[self addChild:sprite];
*/
}
}
-(void)update:(CFTimeInterval)currentTime {
/* Called before each frame is rendered */
}
#end
check out this example i just used a single rectangle but you can use as many object you want be sure that different action group contain a different name so its easy for you to delete and pause a action when user touch screen and apply and new group of action on another object when a action is deleted or paused.

Answer 2

every action has a complete handler in sprite kit so you can easily get when an action is finished or completed by using below sentence
//action A completed do whatever you want's to do when action is finished
[sprite runAction: A completion:^{
[sprite setPaused: True]
}];