end game not working [closed] - ios

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I'm using a tutorial to create a game where if the rocketship is hit by an asteroid, the ship will show an image using SKEmitterNode and will blink then play a sound. This part of the game is working, however the game will not end. How do I fix this error?
Here's my code where I believe the error is
- (void)didBeginContact:(SKPhysicsContact *)contact
{
uint32_t collision = (contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask);
if (collision == (asteroidCategory | shipCategory)) {
SKNode *asteroid, *spaceship;
if (contact.bodyA.categoryBitMask == shipCategory) {
spaceship = contact.bodyA.node;
asteroid = contact.bodyB.node;
[self runAction:[SKAction playSoundFileNamed:#"explosion_large.caf" waitForCompletion:NO]];
SKAction *blink = [SKAction sequence:#[[SKAction fadeOutWithDuration:0.1],
[SKAction fadeInWithDuration:0.1]]];
SKAction *blinkForTime = [SKAction repeatAction:blink count:6];
[self.spaceship runAction:blinkForTime];
NSString *explosionPath = [[NSBundle mainBundle] pathForResource:#"RocketFlame" ofType:#"sks"];
SKEmitterNode *explosion = [NSKeyedUnarchiver unarchiveObjectWithFile:explosionPath];
CGVector emitterVector = CGVectorMake(spaceship.frame.size.width * 2.0, 0);
explosion.particlePositionRange = emitterVector;
[self.spaceship addChild:explosion];
}
else {
spaceship = contact.bodyB.node;
asteroid = contact.bodyA.node;
[self runAction:[SKAction playSoundFileNamed:#"explosion_large.caf" waitForCompletion:NO]];
SKAction *blink = [SKAction sequence:#[[SKAction fadeOutWithDuration:0.1],
[SKAction fadeInWithDuration:0.1]]];
// SKAction *blinkForTime = [SKAction repeatAction:blink count:6];
[self.spaceship runAction:blink];
NSString *explosionPath = [[NSBundle mainBundle] pathForResource:#"RocketFlame" ofType:#"sks"];
SKEmitterNode *explosion = [NSKeyedUnarchiver unarchiveObjectWithFile:explosionPath];
CGVector emitterVector = CGVectorMake(spaceship.frame.size.width * 2.0, 0);
explosion.particlePositionRange = emitterVector;
[self.spaceship addChild:explosion];
}
[self asteroid:(SKSpriteNode *) asteroid didCollideWithasteroid:(SKSpriteNode *) spaceship];
}
else if (collision == (projectileCategory| asteroidCategory)) {
SKNode *Projectile, *asteroid;
if (contact.bodyA.categoryBitMask == asteroidCategory) {
Projectile= contact.bodyA.node;
asteroid = contact.bodyB.node;
}
else {
Projectile = contact.bodyB.node;
asteroid = contact.bodyA.node;
}
[self projectile:(SKSpriteNode *) Projectile didCollideWithasteroid:(SKSpriteNode *) asteroid];
self.asteroidsDestroyed++;
if (self.asteroidsDestroyed > 30) {
SKTransition *reveal = [SKTransition flipHorizontalWithDuration:0.5];
SKScene * gameOverScene = [[GameOverScene alloc] initWithSize:self.size won:NO];
[self.view presentScene:gameOverScene transition: reveal];
}
}
}

Answer 1

The game is not ending because you are not calling the end-game transition in case of the collsion between the spaceship and asteroid as you do in the case where the collision is between the projectile and the asteroid.
- (void)didBeginContact:(SKPhysicsContact *)contact
{
uint32_t collision = (contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask);
if (collision == (asteroidCategory | shipCategory)) {
SKNode *asteroid, *spaceship;
if (contact.bodyA.categoryBitMask == shipCategory) {
spaceship = contact.bodyA.node;
asteroid = contact.bodyB.node;
}
else {
spaceship = contact.bodyB.node;
asteroid = contact.bodyA.node;
}
[self runAction:[SKAction playSoundFileNamed:#"explosion_large.caf" waitForCompletion:NO]];
SKAction *blink = [SKAction sequence:#[[SKAction fadeOutWithDuration:0.1],
[SKAction fadeInWithDuration:0.1]]];
SKAction *blinkForTime = [SKAction repeatAction:blink count:6];
[self.spaceship runAction:blinkForTime];
NSString *explosionPath = [[NSBundle mainBundle] pathForResource:#"RocketFlame" ofType:#"sks"];
SKEmitterNode *explosion = [NSKeyedUnarchiver unarchiveObjectWithFile:explosionPath];
CGVector emitterVector = CGVectorMake(spaceship.frame.size.width * 2.0, 0);
explosion.particlePositionRange = emitterVector;
[self.spaceship addChild:explosion];
[self asteroid:(SKSpriteNode *) asteroid didCollideWithasteroid:(SKSpriteNode *) spaceship]; //What does this do?
[self runAction:[SKAction sequence:#[[SKAction waitForDuration:3.0], [SKAction runBlock:^{
[self gameEndedWithSuccess:NO];
}]]]];
}
else if (collision == (projectileCategory| asteroidCategory)) {
SKNode *Projectile, *asteroid;
if (contact.bodyA.categoryBitMask == asteroidCategory) {
Projectile= contact.bodyA.node;
asteroid = contact.bodyB.node;
}
else {
Projectile = contact.bodyB.node;
asteroid = contact.bodyA.node;
}
[self projectile:(SKSpriteNode *) Projectile didCollideWithasteroid:(SKSpriteNode *) asteroid];
self.asteroidsDestroyed++;
if (self.asteroidsDestroyed > 30) {
[self gameEndedWithSuccess:YES];
}
}
}
-(void) gameEndedWithSuccess:(BOOL)success
{
SKTransition *reveal = [SKTransition flipHorizontalWithDuration:0.5];
SKScene * gameOverScene = [[GameOverScene alloc] initWithSize:self.size won:success];
[self.view presentScene:gameOverScene transition: reveal];
}