Delegate not working between HudLayer and GameLayer - ios

Question

I have created a HudLayer class which defines a protocol for when button presses happen.
-(id) init
{
if( (self=[super initWithColor:ccc4(255, 255, 0, 128)])) {
self.position=ccp(0,0);
self.contentSize=CGSizeMake(480, 40);
scoreLabel=[CCLabelTTF labelWithString:#"0" fontName:#"Marker Felt" fontSize:24];
scoreLabel.position=ccp(62,20);
scoreLabel.anchorPoint=ccp(0,0.5);
[self addChild:scoreLabel];
CCLabelTTF *textLabel=[CCLabelTTF labelWithString:#"Score:" fontName:#"Marker Felt" fontSize:24];
textLabel.position=ccp(5,20);
textLabel.anchorPoint=ccp(0,0.5);
[self addChild:textLabel];
CCMenuItemImage * item = [CCMenuItemImage itemWithNormalImage:#"fire.png" selectedImage:#"fire.png" target:self selector:#selector(projectileButtonTapped:)];
CCMenu *menu = [CCMenu menuWithItems:item, nil];
menu.position = ccp(150, 20);
[self addChild:menu];
}
return self;
}
- (void)projectileButtonTapped:(id)sender
{
NSLog(#"projectileButtonTapped HudLayer");
[self.delegate respondsToSelector:#selector(projectileButtonTapped:)];
}
Then in my HelloWorldLayer class I implement the protocol and set myself as the delegate.
+(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];
//add another layer to the scene
// HudLayer *anotherLayer = [HudLayer node];
// anotherLayer.delegate = self;
// [scene addChild: anotherLayer];
// layer.hud=anotherLayer;
// return the scene
return scene;
}
-(id) init
{
if( (self=[super init]) ) {
_tileMap = [CCTMXTiledMap tiledMapWithTMXFile:#"GridWars#medium.tmx"];
_background = [_tileMap layerNamed:#"Background"];
_foreground = [_tileMap layerNamed:#"Foreground"];
_meta = [_tileMap layerNamed:#"Meta"];
_meta.visible = NO;
CCTMXObjectGroup *objectGroup = [_tileMap objectGroupNamed:#"Objects"];
NSAssert(objectGroup != nil, #"tile map has no objects object layer");
NSDictionary *spawnPoint = [objectGroup objectNamed:#"SpawnPoint"];
int x = [spawnPoint[#"x"] integerValue];
int y = [spawnPoint[#"y"] integerValue];
_wizardHero = [[WizardHero alloc]init];
_redEnemy = [[RedEnemy alloc]init];
_wizardHero.position = ccp(x,y);
[self addChild:_wizardHero];
[self setViewPointCenter:_wizardHero.position];
[self addChild:_tileMap z:-1];
self.touchEnabled = YES;
self.enemies = [[NSMutableArray alloc] init];
self.projectiles = [[NSMutableArray alloc] init];
[self schedule:#selector(testCollisions:)];
for (spawnPoint in [objectGroup objects]) {
if ([[spawnPoint valueForKey:#"Enemy"] intValue] == 1){
x = [[spawnPoint valueForKey:#"x"] intValue];
y = [[spawnPoint valueForKey:#"y"] intValue];
[self addEnemyAtX:x y:y];
}
}
_hud = [HudLayer node];
_hud.delegate = self;
[self addChild:_hud];
}
return self;
}
- (void)projectileButtonTapped:(id)sender
{
// Find where the touch is
// CGPoint touchLocation = [touch locationInView: [touch view]];
// touchLocation = [[CCDirector sharedDirector] convertToGL: touchLocation];
// touchLocation = [self convertToNodeSpace:touchLocation];
if (self.wizardHero.selectedTargets.count > 0) {
// Create a projectile and put it at the player's location
CCSprite *projectile = [CCSprite spriteWithFile:#"Projectile.png"];
projectile.position = _wizardHero.position;
[self addChild:projectile];
// Determine where we wish to shoot the projectile to
int realX;
// Are we shooting to the left or right?
CGPoint diff = ccpSub(self.redEnemy.position, self.wizardHero.position);
if (diff.x > 0)
{
realX = (_tileMap.mapSize.width * _tileMap.tileSize.width) +
(projectile.contentSize.width/2);
} else {
realX = -(_tileMap.mapSize.width * _tileMap.tileSize.width) -
(projectile.contentSize.width/2);
}
float ratio = (float) diff.y / (float) diff.x;
int realY = ((realX - projectile.position.x) * ratio) + projectile.position.y;
CGPoint realDest = ccp(realX, realY);
// Determine the length of how far we're shooting
int offRealX = realX - projectile.position.x;
int offRealY = realY - projectile.position.y;
float length = sqrtf((offRealX*offRealX) + (offRealY*offRealY));
float velocity = 480/1; // 480pixels/1sec
float realMoveDuration = length/velocity;
// Move projectile to actual endpoint
id actionMoveDone = [CCCallFuncN actionWithTarget:self
selector:#selector(projectileMoveFinished:)];
[projectile runAction:
[CCSequence actionOne:
[CCMoveTo actionWithDuration: realMoveDuration
position: realDest]
two: actionMoveDone]];
[self.projectiles addObject:projectile];
}
}
The problem is that only the projectileButtonTapped: in the HudLayer is called (ie. the delegate's method never gets called).
P.S.
To save space I left out both .h files. But I assure you they are correct, with the #protocol used in HudLayer and that same protocol name put in <> within the HelloWorldLayer.

Answer 1

I think :
- (void)projectileButtonTapped:(id)sender
{
NSLog(#"projectileButtonTapped HudLayer");
if ([self.delegate respondsToSelector:#selector(projectileButtonTapped:)]) {
[self.delegate performSelector:#selector(projectileButtonTapped:) withObject:sender];
}
}