Hi, Sometimes you may need to get a sprite using tag while doing a project using Cocos2D. It’s easy to get a sprite by a tag in Cocos2D, use the following code to get it. Here ‘tempSprite’ is your CCSprite and it will get the sprite with tag 7. 🙂
Hi, In order to make a sprite completely invisible , use the following code while using Cocos2D, this code will set the visibility of your sprite to zero. In order to make a sprite completely visible, use the following code while using Cocos2D, this code will set the visibility of the sprite back to one.… Read More »
Hi, In order to mute and unmute sound in Cocos2D iPhone, use the following code. 🙂
Hi, In order to set font and size of a UITextView programmatically use the following code. 🙂
Hi, Use the following line of code to convert NSData to NSString in iPhone/iPad using Objective C. Here ‘yourData’ is your NSData which you want to convert to NSString. 🙂
Hi, How can you detect single/double/triple taps in iPhone using Objective C? Use the following code to detect single or multiple taps in iPhone/iPad/iPod. The code can also be used with Cocos2D & Box2D. Try it out! You can even detect Quadrup! 🙂
Hi, While using cocos2D you may need to create some scenes with menu items on it. This example given below shows , how to create a cocos2D menu scene with menu items using images. You can have your own custom fancy image text indicating menu items using this. 🙂
Hi all…….. This tutorial is for Titanium users. This tutorial explains how to place a textBox or anyother control inside a tableView. A tableview requires data in the form of a array, so we create an array (here array is named “data_array“) by adding the controls like textboxes and labels inside it. You can give… Read More »
Hi, How can you identify the sprite associated with a particular body while using box2D ? Sometimes you may need to identify the sprite associated with the body you are using. For that use the following line of code. Now you got the corresponding sprite in your ‘yourSprite’ 🙂
Hi, Sometimes you may need to find the distance between two CGPoint in cocos2D or box2D using Objective C. See the following code to see how you could do that. 🙂
Hi, Sometimes you may want to detect shake gesture in iPhone using your programs. But how can you detect shake gesture in iPhone? Shake gesture in iPhone can be detected by using the accelerometer. The following lines of code can be used for detecting the shake gesture in iPhone. You can use these lines of… Read More »
Hi, If you are a game developer and you are using box2D for real world simulations, you would probably need a particular body to be removed from the box2D world! But how can you remove box2D body from world ? See the following sample code which does the same. – (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {… Read More »
Hi, Sometimes you may need to find/search a particular item in NSArray. How can you find whether a particular item is present in NSArray or not? Look at the code below. Here ‘yourArray is your NSArray and ‘containsObject’ returns either TRUE or FALSE and it get stored in ‘testFlag’. 🙂
Hi, Sometimes you may need to empty an NSMutableArray which is already initialized with some objects. You don’t need to release it and again alloc it for future use! You can simply empty an NSMutableArray using the following line of code. [yourArray removeAllObjects]; Here ‘yourArray’ is your NSMutableArray. 🙂
Hi, If you are a game developer then you will always need a sequence of images to be animated & the best way to do it is via sprite sheet animations. But how can a sprite sheet be made? Suppose you have a sequence of images of any animations, how will you convert it into… Read More »
Hi, Suppose you have a sprite sheet of the desired animation you want. But how will you use that sprite sheet animation in your program using cocos2D? That’s simple. See the following code first. Note : But how to make a sprite sheet? That topic can be found here. Making of sprite sheets from individual… Read More »
Hi, In order to verify an email address you have entered is valid or not using Objective C, use the following code. – (BOOL) checkYourMail: (NSString *) myEmail{ NSString *checkMail= @”[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+.[A-Za-z]{2,4}”; NSPredicate *matchMail = [NSPredicate predicateWithFormat:@”Matching %@”, checkMail]; return [matchMail evaluateWithObject:myEmail]; } 🙂
Hi, If you want to Pause an instance of NSSound which is being played in Cocoa Mac, use the following line of code. [yourSound pause]; ‘yourSound’ is the NSSound Object. Similarlyl for resuming NSSound in cocoa Mac [yourSound resume];
Hi, If you want to Pause an instance of NSSound which is being played in Cocoa Mac, use the following line of code. [yourSound pause]; ‘yourSound’ is the NSSound Object. Similarlyl for resuming NSSound in cocoa Mac [yourSound resume];
Hi, If you want to Pause an instance of NSSound which is being played in Cocoa Mac, use the following line of code. [yourSound pause]; ‘yourSound’ is the NSSound Object. Similarlyl for resuming NSSound in cocoa Mac [yourSound resume];
Hi, In certain situations you may need to make visible or invisible certain sprites. But how to set a sprite visible and invisible in Cocos2D? See the following Cocos2D code. //Set the sprite’s visible value to 1 to make it visible yourSprite.visible = 1; //Set the sprite’s visible value to 0 to make it invisible… Read More »
Hi, There may arise some situations where you need to change the z value of a particular sprite during an action in Cocos2D. So how can you do that? See the following lines of code. CCSprite *sample= [CCSprite spriteWithFile:@”trialImage.png”]; sample.position = ccp(160,240); [self addChild:sample z:1]; /* Some of your actions goes here! */ [self reorderChild:sample… Read More »
Hi, Want to invoke an action when a text field (UITextField) is clicked using Objective C? Use the following. [myTextField addTarget:self action:@selector(textFieldTouched:) forControlEvents:UIControlEventTouchDown]; – (void) textFieldTouched:(id)sender { //Here goes your actions on TextField Clicked } 🙂
Hi, Sometimes you may need to create some buttons to the View using Objective C code rather than using Interface Builder. Here is how you can do that easily and efficiently. //You can create button with type. Here I am creating a Custom Button UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom]; //Then what? Give action to be… Read More »
For showing a number of animations sequentially in Cocos2D we use the CCSequence. CCSequence can accept a number of actions as parameters which will be executed in sequence , ie one after another. Here is a sample code to so this. /* This action will scale my_sprite */ id scaleTo = [CCScaleTo actionWithDuration:4 scale:1.5]; /*This… Read More »