IOS - Collision Detection on Sprites using Cocos2d - ios

Question

In this game I have asteroids flying down from to top of screen, and a ship you can move freely, but I have added some collision detection and it does not seem to work in the update method when I call [self scheduleupdate];
// Import the interfaces
#import "HelloWorldLayer.h"
// Needed to obtain the Navigation Controller
#import "AppDelegate.h"
#pragma mark - HelloWorldLayer
// HelloWorldLayer implementation
#implementation HelloWorldLayer
// Helper class method that creates a Scene with the HelloWorldLayer as the only child.
+(CCScene *) scene
{
// 'scene' is an autorelease object.
CCScene *scene = [CCScene node];
// 'layer' is an autorelease object.
HelloWorldLayer *layer = [HelloWorldLayer node];
// add layer as a child to scene
[scene addChild: layer];
// return the scene
return scene;
}
// on "init" you need to initialize your instance
-(id) init
{
if( (self=[super init]) ) {
self.isTouchEnabled = YES;
moveLeft = NO;
moveRight = NO;
speed = 3;
fireSpeed = 8;
fireArray = [[NSMutableArray alloc] init];
CGSize winSize = [[CCDirector sharedDirector] winSize];
CCSprite *bg = [[CCSprite alloc] initWithFile:#"space_bg.jpg"];
[bg setPosition:ccp(160, 240)];
CGSize imageSize = bg.contentSize;
bg.scaleX = winSize.width / imageSize.width;
bg.scaleY = winSize.height / imageSize.height;
bg.position = ccp(winSize.width/2, winSize.height/2);
[self addChild:bg];
ship = [[CCSprite alloc] initWithFile:#"ship.png"];
[ship setPosition:ccp(100, 100)];
[self addChild:ship];
[self schedule:#selector(fireLoop:)];
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1
target:self
selector:#selector(fireCreate)
userInfo:nil
repeats:YES];
asteroidArray = [[NSMutableArray alloc] init];
for(int i = 0; i < 100; ++i) {
CCSprite *asteroid = [[CCSprite alloc] initWithFile:#"asteroid1.png"];
[asteroidArray addObject:asteroid];
}
[self asteroidCreate];
[self scheduleUpdate];
}
return self;
}
CCSpriteBatchNode *spriteSheet;
NSMutableArray *asteroidAnimFrames;
- (float)randomValueBetween:(float)low andValue:(float)high {
return (((float) arc4random() / 0xFFFFFFFFu) * (high - low)) + low;
}
-(void)updtate:(ccTime)dt{
CGPoint shipPosition = [ship position];
for(int i = 0; i < asteroidArray.count; i++){
CCSprite *asteroid = [asteroidArray objectAtIndex:i];
if (CGRectIntersectsRect(ship.boundingBox, asteroid.boundingBox)) {
NSLog(#"hit");
}
}
}
- (void)countDownToCreateNextAsteroid {
int minTime = 1;
int maxTime = 10;
int randomTime = (arc4random() % (3));
id countdownDelay = [CCDelayTime actionWithDuration:randomTime];
id creationMethod = [CCCallFunc actionWithTarget:self selector:#selector(asteroidCreate)];
id countdownToCreateSeq = [CCSequence actions:countdownDelay, creationMethod, nil];
[self stopAllActions];
[self runAction:countdownToCreateSeq];
}
-(void)asteroidCreate {
CGSize winSize = [[CCDirector sharedDirector] winSize];
[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:#"asteroids.plist"];
spriteSheet = [CCSpriteBatchNode batchNodeWithFile:#"asteroids.png"];
asteroidAnimFrames = [NSMutableArray array];
for(int i=1; i <= 8; i++) {
[asteroidAnimFrames addObject:[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:[NSString stringWithFormat:#"asteroid%d.png", i]]];
}
CCAnimation *moveAsteroidAnim = [CCAnimation animationWithFrames:asteroidAnimFrames delay:0.1f];
CCSprite *asteroid = [CCSprite spriteWithSpriteFrameName:#"asteroid1.png"];
int x = arc4random() % 320;
int y = arc4random() % 480;
asteroid.position = ccp(x, 480);
CCAction *asteroidAction = [CCRepeatForever actionWithAction:[CCAnimate actionWithAnimation:moveAsteroidAnim restoreOriginalFrame:NO]];
[asteroidArray addObject:asteroid];
int q = arc4random() % 320;
int r = arc4random() % 10;
CCAction *moveAction = [CCMoveTo actionWithDuration:r position:ccp(q, -50)];
id asteroidRemove = [CCCallBlock actionWithBlock:^
{
[asteroid removeFromParentAndCleanup:YES];
[asteroidArray removeObject:asteroid];
}];
id asteroidSeq = [CCSequence actions:moveAction, asteroidRemove, nil];
[asteroid runAction:asteroidSeq];
[asteroid runAction:asteroidAction];
[spriteSheet addChild:asteroid];
[self addChild:spriteSheet];
[self countDownToCreateNextAsteroid];
}
-(void)fireLoop:(ccTime)fl {
if(fireArray.count > 0){
for(int i = 0; i < fireArray.count; i++){
CCSprite *tmpFire = [fireArray objectAtIndex:i];
if(tmpFire.position.y < 500){
[tmpFire setPosition:ccp([tmpFire position].x, [tmpFire position].y + fireSpeed)];
}else{
[fireArray removeObjectAtIndex:i];
}
}
} else {
}
}
-(void)fireCreate{
int shootPositionX = [ship position].x;
int shootPositionY = ([ship position].y) + 35;
CCSprite *fire;
fire = [[CCSprite alloc] initWithFile:#"fire.png"];
[fire setPosition:ccp(shootPositionX, shootPositionY)];
[fireArray addObject:fire];
[self addChild:fire];
[fire release];
}
-(void)gameLoop:(ccTime)dt {
int shipPositionX = 41/2;
if([ship position].x > shipPositionX){
[ship setPosition:ccp([ship position].x - speed, [ship position].y)];
}
}
-(void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
for(UITouch *t in touches){
CGPoint point = [self convertTouchToNodeSpace:t];
//if(point.x <= 160){
// moveRight = NO;
// moveLeft = YES;
//}else{
// moveRight =YES;
// moveLeft = NO;
//}
if(allowedToMove)
[ship setPosition:ccp(point.x, point.y + 76)];
}
}
-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
for(UITouch *t in touches){
CGPoint point = [self convertTouchToNodeSpace:t];
int shipX = [ship position].x;
int shipY = [ship position].y;
if (CGRectContainsPoint(CGRectMake (shipX - 20.5, shipY - 96, 50, 50), point))
{
allowedToMove = true;
}
}
}
-(void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
for(UITouch *t in touches){
CGPoint point = [self convertTouchToNodeSpace:t];
allowedToMove = false;
}
}
// on "dealloc" you need to release all your retained objects
- (void) dealloc
{
// in case you have something to dealloc, do it in this method
// in this particular example nothing needs to be released.
// cocos2d will automatically release all the children (Label)
// don't forget to call "super dealloc"
[super dealloc];
}
#pragma mark GameKit delegate
-(void) achievementViewControllerDidFinish:(GKAchievementViewController *)viewController
{
AppController *app = (AppController*) [[UIApplication sharedApplication] delegate];
[[app navController] dismissModalViewControllerAnimated:YES];
}
-(void) leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController
{
AppController *app = (AppController*) [[UIApplication sharedApplication] delegate];
[[app navController] dismissModalViewControllerAnimated:YES];
}
#end