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POadding CCPhysicsSprite to CCLayer cocos2d
 

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  1. POadding CCPhysicsSprite to CCLayer cocos2d
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    <p>I'm trying to reorganize HelloWorld project in cocos2d to our needs. The thing I did - made a class, which is inherent from <code>CCPhysicsSprite</code> and wanted to add it to <code>CCLayer</code> (<code>HelloWorldLayer</code>). But something goes wrong. According to debugger my instance is created, but I can't see it in the iOS emulator. Need your help and explanations.</p> <p>HelloWorldLayer.h</p> <pre><code>@interface HelloWorldLayer : CCLayer &lt;GKAchievementViewControllerDelegate, GKLeaderboardViewControllerDelegate&gt; { CCTexture2D *spriteTexture_; // weak ref b2World* world_; // strong ref GLESDebugDraw *m_debugDraw; // strong ref } </code></pre> <p>HelloWorldLayer.mm (only changed by me functions:)</p> <pre><code>-(id) init { if( (self=[super init])) { // enable events self.touchEnabled = YES; self.accelerometerEnabled = YES; CGSize s = [CCDirector sharedDirector].winSize; // init physics [self initPhysics]; // create reset button //[self createMenu]; //Set up sprite //#if 1 // // Use batch node. Faster // CCSpriteBatchNode *parent = [CCSpriteBatchNode batchNodeWithFile:@"blocks.png" capacity:100]; // spriteTexture_ = [parent texture]; //#else // // doesn't use batch node. Slower // spriteTexture_ = [[CCTextureCache sharedTextureCache] addImage:@"blocks.png"]; // CCNode *parent = [CCNode node]; //#endif // [self addChild:parent z:0 tag:kTagParentNode]; // // // [self addNewSpriteAtPosition:ccp(s.width/2, s.height/2)]; CCLabelTTF *label = [CCLabelTTF labelWithString:@"Tap screen" fontName:@"Marker Felt" fontSize:32]; [self addChild:label z:0]; [label setColor:ccc3(0,0,255)]; label.position = ccp( s.width/2, s.height-50); [self scheduleUpdate]; } return self; } -(void) addNewSpriteAtPosition:(CGPoint)p { CCLOG(@"Add sprite %0.2f x %02.f",p.x,p.y); if([self getChildByTag:kTagParentNode] == nil) { BloodRobotUnit *unit = [[BloodRobotUnit alloc] initWithOwner:world_ at:p]; [self addChild:unit z:0 tag:kTagParentNode]; } } </code></pre> <p>And Creating unit: (header and mm file:)</p> <pre><code>@interface BloodRobotUnit : CCPhysicsSprite { b2Body *body_; b2World *owner_; } -(id) initWithOwner:(b2World*)owner at:(CGPoint)pt; </code></pre> <p>mm:</p> <pre><code>-(id) initWithOwner:(b2World*)owner at:(CGPoint)pt { if(self = [super initWithFile:@"blocks.png" rect:CGRectMake(0, 0, 32, 32)]) { owner_ = owner; //create body at position b2BodyDef bodyDef; bodyDef.type = b2_dynamicBody; bodyDef.position.Set(pt.x/PTM_RATIO, pt.y/PTM_RATIO); body_ = owner-&gt;CreateBody(&amp;bodyDef); // Define another box shape for our dynamic body. b2PolygonShape dynamicBox; dynamicBox.SetAsBox(.5f, .5f);//These are mid points for our 1m box // Define the dynamic body fixture. b2FixtureDef fixtureDef; fixtureDef.shape = &amp;dynamicBox; fixtureDef.density = 1.0f; fixtureDef.friction = 0.3f; body_-&gt;CreateFixture(&amp;fixtureDef); [self setB2Body: body_]; [self setPosition:pt]; return (self); } return nil; } </code></pre> <p>Where is my mistake? Any help will be very appreciated</p>
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    1. COis your addNewSpriteAtPosition is commented intentionally ? otherwise nothing will be added to the layer ? do you call it from somewhere else ?
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    2. COyes I commented it intentionally addNewSpriteAtPosition is called from `- (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event` `{` `for( UITouch *touch in touches){` `CGPoint location = [touch locationInView: [touch view]];` `location = [[CCDirector sharedDirector] convertToGL: location];` `[self addNewSpriteAtPosition: location];` ` }` `}`
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    3. COare you sure that the line adding the sprite is really reached ? and that the sprite is created successfully ?
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