cocos2d for iPhone is a free open-source framework for building 2D games, demos, and other graphical/interactive applications for iOS devices.

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Zoom Layer centered on a Sprite

I am in process of developing a small game where a space-ship travels through a layer (doh!), in some situations the spaceship comes close to an enemy space ship, and the whole layer is zoomed in on ...
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0answers
158 views

How do I control an animation with a drag command?

I want to play an animation when someone drags a sprite from it's default position to another selected position. If they drag half of the selected position then animation will be play half. For ...
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1answer
358 views

Objective - Gestures while finger touches screen

I'm creating a space cocos2d game with objetive-c. I have in the bottom left 2 arrows to move the sprite left or right. I also implemented a swipe gesture to change weapon, however it only happens ...
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1answer
815 views

Using tilemaps for an isometric football game with cocos2dx

I am writing a simple soccer game in cocos2d-x and recently found out that older iOS versions do not support cocos2d sprites larger than 1024x1024px. I was thinking about using isometric tilemaps to ...
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1answer
3k views

Cocos2d CCSpriteFrameCache: couldn't load texture file

I am currently doing this Cocos2d tutorial: http://www.raywenderlich.com/1271/how-to-use-animations-and-sprite-sheets-in-cocos2d ...and get the following error messages: 2011-12-30 16:36:28.536 ...
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1answer
654 views

How can I scroll sprites when swiping using Cocos2D?

I'm adding 3 sprites (layers) to CCParallaxNode: BGLayer = [CCSprite spriteWithFile:@"Layer.png"]; [_backgroundNode addChild:BGLayer z:2 parallaxRatio:layer1Speed ...
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0answers
178 views

Which is the best model to present the destruction of the building in Box2D? [closed]

We'd like to create a "world-destruction" game. The problem is in choosing the best model for building destruction. On my mind the building would be an array of objects( tiles). Each object would ...
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1answer
1k views

How to make the accelerometer work in different angles

I am working on some Cocos2D tutorials (doodle drop) and have downloaded the program on my device. The program is working but I have to hold the iPhone in a very specific, and not very good, angle to ...
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544 views

Cocos2d and Body with few collision shapes using chipmunk

I'm using Cocos2d (0.99.5) with chipmunk physics engine. Currently I'm trying to place a body into space which is combined from few circle shapes. Let's say I have a corresponding sprite image with ...
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1answer
592 views

How to use the chipmunk physics-engine?

I am developing a game demo where I want a physics simulation with balls and obstacles. I know that this is possible with the chipmunk physics-engine but I don't know how to use it. Can anybody give ...
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4answers
2k views

Include Box2D libraries to a cocos2d project (iOS)

I have a problem including box2D to my cocos2d project. I've tried different ways to do it with no success. This is what I've done: I downloaded Box2D (Box2D_v2.2.1) to my project directory. Dragged ...
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1answer
634 views

Retrieving latest touch to interrupt another

In Cocos2D for iPhone, I want the latest touch event to interrupt another and ignore the last touch. Let me know if I need to elaborate more, but basically my game consists of a lot of finger ...
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2answers
443 views

Game over pop-up like Flappy Bird

How can I make a game over pop-up like Flappy Bird in cocos2d-iphone 3? I tried to add a new Scene, but it adds a new screen on the game, I just want a rectangle with some buttons inside it. I also ...
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1answer
83 views

Getting a sprite from multiple sprites for right material pattern

Not sure how accurate the question was but I'll put it this way. I'm developing a game where player will construct his/her own stuff, like bridge, building etc. using cocos2d-iphone and Box2D. First ...
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1answer
456 views

Alternatives to NSMutableArray for storing 2D grid - iOS Cocos2d

I'm creating a grid-based iOS game using Cocos2d. Currently the grid is stored in an NSMutableArray that contains other NSMutableArrays (the latter are rows in the grid). This works ok and performance ...
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1answer
590 views

Keeping the CCSprite on the screen

In my cocos2d app I have a CCSprite moving on the screen but it moves off the screen. How can I prevent the CCSprite from moving off the screen? Thanks
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1answer
574 views

How to manage game components and their attributes?

Currently I am working with cocos2d for the iPhone. I want to make my game structured and consequential. How to manage all the game components? What do I mean with game components? A game component ...
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1answer
228 views

Incorrect sprite rotation with atan2() [duplicate]

I want to rotate a sprite so that it faces the mouse cursor/screen touch location. Currently I'm using the following method to compute the angle of rotation. The input position is the target point the ...
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2answers
59 views

Count number of CCNodes of a certain class on a layer

Pretty simple question. I'm working in Objective C (cocos2d) and I'm trying to count the number of a sprites of a certain class are present on the current layer being displayed. For example, I have a ...
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1answer
725 views

Cocos2d how to correctly preload a spritesheet before the scene start?

I'm working on a game with Objective-C and Cocos2d, the game has a huge number of images, and obviously as I add images on the spritesheet (well yes I'm using spritesheets) the loading time get ...
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1answer
1k views

cocos2d-x - object creation and management in game design

How do others keep track of everything going on in their games? I am working on a new game and I am quickly realizing everything that I need to keep track of. Example: Maybe a layerManager that ...
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2answers
87 views

CCSprite as an iVar

So I built my first game app, and it was a lot of fun. I'm really trying to expand on some of the ideas, but I'm running in to some serious variable scope issue. What I want to do is encapsulate a ...
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1answer
503 views

Remove HUD from Child Scene

For my game, I create game scene for which I set HUD to it. First my game scene use BoundCamera, so I use hud to set score text, dollar text and setting button. Now on game scene when I touch on ...
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2answers
744 views

Collision detection on a 2D hexagonal grid

I'm making a casual grid-based 2D iPhone game using Cocos2D. The grid is a "staggered" hex-like grid consisting of uniformly sized and spaced discs. It looks something like this. I've stored the grid ...
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1answer
243 views

How to work with two layers or more in cocos2d?

I want to make a game in cocos2d. I don't know too much about it. My question is related to communication between two layers or more. For instance, let's say I want a layer with a scrolling road and ...
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1answer
196 views

How to use generic level editors with my arbitary code?

I have a game, breakout clone. It has a Block class that contains CCSprite as a property. Usually I made levels by manually setting those blocks to positions. Here comes the question, how do I use ...
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1answer
419 views

How to store level information on iOS

Let's imagine I have a breakout game. I make a level like this: For columns < max columns For rows < max rows Create sprite from file, put it on some position based on ...
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2answers
170 views

Falling images that can be pressed

In my cocos2d app I am trying to make images fall from the top of the screen and detect when they are pressed. I am having a hard time. Can anyone help me achieve this? Thanks.
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1answer
405 views

Triangles in a C++ STL Vector as an Objective-C member sometimes draws incorrectly in OpenGL ES

The polygons draw correctly 80% of the time. When it fails, a vertex is dislocated. The polygon is consistently drawn with the wrong vertex. I checked that the vector is correct during initialization, ...
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1answer
146 views

CCSprite x and y comparison

I have 2 CCSprites and I want to tell if their x and y are equal I tried this: if(sam.position.x == tom.position.x && sam.position.y == tom.position.y){ NSLog(@"Hooray!"); } Although I do ...
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1answer
606 views

what is the difference between CCSprite and a PhysicsSprite?

I am new to Cocos2D and I've realized that most of the codes written before the Cocos2d update used CCSprites. Recently I realized a lot of more recent codes after the update are using PhysicsSprite. ...
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1answer
480 views

How do I manage the visibility of enemy spawn locations in a long scrolling shooter?

How do I handle the situation of an enemy spawn place being visible on a screen in a scrolling shooter? The tutorials I have seen are about setting all the enemies on a whole map only. But it is not ...
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1answer
1k views

b2Body moves without stopping

I got a quite strange bug. It is difficult to explain it in two words, but i'll try to do this in short. My b2Body has restitution, friction, density, mass and collision group. I'm controlling my ...
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1answer
172 views

Cocos2 code structure question

I am doing tutorials to learn Cocos2d and have a question. here is the .m code: #import "SceneManager.h" @interface SceneManager () +(void) go: (CCLayer *) layer; +(CCScene *) wrap: (CCLayer ...
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2answers
242 views

Slow motion of a spherical object on an blunt slant obstacle

In cocos2d environment and box2D when an spherical object falls on a blunt slant obstacle, it moves really slowly, that's nauseating, if you have coded to not to have any interaction with world while ...
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1answer
116 views

Get Facebook Picture in Cocos2d-iphone V3

I'm trying to get the profile picture from Facebook, but I'm getting the following error: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIImage ...
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1answer
290 views

try to create CCSpriteFrame but get nil values

I'm trying to animate a CCSprite in cocos2d v3 following this question, but I'm getting the following error message in Log: Terminating app due to uncaught exception 'NSInvalidArgumentException', ...
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1answer
172 views

Particle effect in sprite

I want to create a particle effect when my player sprite collide with my star sprite. How can I add a particleSystem in the sprite and not in a image? Also, I wish if it could wait for the animation ...
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3answers
482 views

How can I ensure I still get correct touch inputs when my scene is offset?

How can I accept touch input beyond the scene's bounds, so that no matter what I set self.position to, touches can still be detected? I'm creating a tile based game from Ray Winderlich on Cocos2d ...
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1answer
536 views

Tower defense endless levels logic sprite kit [closed]

I am making a tower defense game for iOS using Sprite Kit. I would like for my game to support an endless number of levels, like in Bloons TD 5. What approach should I take to implement this?
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1answer
146 views

Walking Sprite animation Cocos2D [closed]

I am new to cocos2D development. Basically I want to develop game in which i want to move sprite forward with walking kind animation, must look real. Any help will be appreciated.
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1answer
95 views

Fast Forward Drawing using ACEdrawingView

i am using this : https://github.com/acerbetti/ACEDrawingView i want to implemented one Functionality in which i want Fast drawing by clicking on a Button. i am drawing points on screen. i have ...
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1answer
84 views

Create body on a sprite (box2D)

I'm quite experimented in objective C, but now i'm tried cocos2D and his features. I need to add a body on a spritesheet (if possible on a classic 'UIImageView'), in order to detect collisions after. ...
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1answer
133 views

Move background with the player location

I want to move background with player location in ios . I have implemented the infinite parallax background by using the CCParallax class but i don't need it. I want to do something similar to this ...
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1answer
337 views

iOS with cocos2d to MVC or not to MVC?

I am working with cocos2d. All my objects are declared on the CCLayer that I'm using, I have the logic of the game there and all the CCSprites. Should I put the CCSprite for the player and all it's ...
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1answer
241 views

how to improve sprite animations to reduce FPS

My game has different, and detailed animations throughout the game. For example, the main character has an idle stance, so its not just painted still, giving him some life. Death animation, hurt ...
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1answer
109 views

Cocos2d When The Loading Screen Scene is loading music

When the loading screen loads objects like music cutscenes, the idea is to preload the objects, so... what should happen next? Do I transfer the objects to the next scene? or these special objects, ...
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1answer
50 views

Calling CCRepeaForever on CCLabelTTF Makes Label Not Show Up

I have a CCLabelTTF in the top right hand corner of the view. -(void)scrollScoreLabelAndMonkey{ scoreLabel = [CCLabelTTF labelWithString:@"0000" fontName:@"Marker Felt" fontSize:30 ]; ...
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1answer
620 views

Using depth buffer on a sprite

I am following this guide: http://www.cocos2d-iphone.org/wiki/doku.php/prog_guide:tiled_maps Trying to create a tiled map that also supports multiple layers. The guide says that a way is to use ...
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1answer
546 views

Cocos2d patterns for simple texture management

I'd like to simplify the way I preload image resources in my Cocos2d based iOS apps. I've created a small object the just wraps a few of CCTextureCache's methods. It looks like this: @interface ...