sknode

I've already asked this question in a different way here; Swift-Setting a physics body velocity by angle but the three attempts to answer it were unfortunately not exactly what I'm looking for, although I'm grateful for what they taught me anyway. I decided that I should simply rephrase my question with an example and further explanation instead of perpetuating a discussion via comments. So here it is. Imagine I have an SKNode positioned in the centre of the screen. Let's say this is a ball, so any rotation action on it is not visible. I would need a way to have a random angle selected, and

I was wondering if it was at all possible to make an SKNode move forward in a particular direction, but with only one factor. I'm aware of both applying an impulse and setting the velocity of a physics body, but they're both determined by two factors; dx and dy. I also know of rotating to an angle with SKActions. But is it possible to make an object simply "move forward" once it has been set on an angle? Or set its velocity with just one factor? Thanks in advance. Sure I think what you're talking about is something like this: Now let's say you have an SKSpriteNode that is called player who

I use the following piece of code to generate SKNodes periodically. Is there a way to make the period of generation of these SKNodes random. Specifically, how do I make the "delayFish" in the following code an action with a random delay? [self removeActionForKey:@"fishSpawn"]; SKAction* spawnFish = [SKAction performSelector:@selector(spawnLittleFishes) onTarget:self]; SKAction* delayFish = [SKAction waitForDuration:3.0/_moving.speed]; SKAction* spawnThenDelayFish = [SKAction sequence:@[spawnFish, delayFish]]; SKAction* spawnThenDelayFishForever = [SKAction repeatActionForever

Two objects are added to an NSSet , but when I check membership, I can't find one of them. The test code below worked fine in iOS7 but fails in iOS8. SKNode *changingNode = [SKNode node]; SKNode *unchangingNode = [SKNode node]; NSSet *nodes = [NSSet setWithObjects:unchangingNode, changingNode, nil]; changingNode.position = CGPointMake(1.0f, 1.0f); if ([nodes containsObject:changingNode]) { printf("found node\n"); } else { printf("could not find node\n"); } Output: could not find node What happened between iOS7 and iOS8, and how can I fix it? Karl Voskuil SKNode 's implementations of isEqual

I have noticed that the SKNode methods children and childNodeWithName: as the name implies only return results from the children directly below the queried node. i.e. [root children]; will return an NSArray containing the nodes @[CUBE1, CUBE2, CUBE3] . In the diagram below I want to get from the ROOT (SKScene) level down to SPHERE2 so that I can quickly access that nodes children. I was hoping that [root childNodeWithName:@"SPHERE2"]; would traverse the whole hierarchy and return a pointer to SPHERE2 MY QUESTION: Is there something that I have missed that will let me jump into a node tree at a

We have multiple instances of a custom Swift class, which inherits from SKSpriteNode, and were able to execute the following code (grossly simplified for this question) correctly: let instance1 = CustomClass() let instance2 = CustomClass() let instance3 = CustomClass() let instance4 = CustomClass() let array1 = [instance1, instance2] let array2 = [instance3, instance4] func check(testInstance: CustomClass) -> Bool { return array1.filter({ $0 == testInstance }).count > 0 } check(testInstance: instance3) In other words, executing check(testInstance: instance3) returned false as expected. However