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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Spritebuilder and CCScrollView, page indicators not showing up?

I'm using Spritebuilder to make my game, and CCScrollView usually saves me quite a bit of time. I'm trying to implement the scroll view much in the same way as the home screen on an iphone uses the ...
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2answers
220 views

Drawing line from sprite with a touch

I am working with cocos2d for the iPhone and I have a question about how to implement the following. I have a circle shaped sprite on my layer. When I touch the sprite and move my finger a line must ...
6
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1answer
295 views

OpenGL ES object rotation around z axis

I have an object on my screen which is presented rotated and panned, But i have 2 problems regarding the z axis rotations. It's a bit tricky to explain so i uploaded 2 videos to describe each problem. ...
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1answer
192 views

Multi Resolution graphic for ios 4 and ios 5

i have used cocos2d-x to code game for ios 4, ios 4s, ios 5 with screen size (3.5 inch and 4 inch) First, my resource are desgined for ios 4 and ios 4s with screen size : 3.5 inch. so if i want to ...
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2answers
76 views

How to define axis of Sprites in a CCAnimation?

I'm struggling to find how to define a kind of axis in my frames, when my sprite punches it moves back. I want to define the head as a pivot for the other sprites with different sizes. How can I ...
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0answers
237 views

How to achieve 'forward' movement (into the screen) using Cocos2D?

I'm interested in creating a 2.5D first-person shooter (like Doom) and I currently don't understand how to implement the player moving forward. The player will also be able to browse around the world ...
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2answers
123 views

Cocos2d: Moving background on update: offsett issue

working with Objective C, iOS and Cocos2d I am developing a vertical scrolling shooter game for iPhone (retina display models with 640 width x 960 height pixel resolution). My basic algorithm works ...
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1answer
122 views

Cocos-2D asteroids style movement (iOS)

So I have a CCSprite subclass, well call this Spaceship. Spaceship needs to move on a loop, until I say othersise by calling a method. The method should look something like - ...
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1answer
77 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
34 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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2answers
529 views

Z-order for cocos2d top-down game with sprite batching

I'm trying to understand how to create z-order system like you can see in http://www.realmofthemadgod.com/ Character is above the tree when he is in front of it and vice versa. Also, I'm planning to ...
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1answer
58 views

Preload in cocos2d v3

I'm trying to create a preload, but i don't know how to implement the code of this topic in cocos2d iphone v3. Since CCTextureCache has changed to CCTexture, and doesn't have sharedTextureCache ...
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2answers
1k views

Cocos2D: Upgrading from OpenGL ES 1.1 to 2.0

I have recently starting upgrading my ios game to the latest Cocos2D (2.0 rc), and I am having some difficulties upgrading my texture generation code to OpenGL 2.0. In the old version I generated ...
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0answers
13 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 ...
2
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1answer
540 views

Pixel Perfect Collision Detection in Cocos2dx

I am trying to port the pixel perfect collision detection in Cocos2d-x the original version was made for Cocos2D and can be found here: ...
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1answer
25 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
76 views

Dynamic Hills like Contre Jour in Cocos2d

I'm interested in maps/environments which are flexible and change at runtime, such as those in Contre Jour. I have looked for a long time to find out how to make this effect, but I couldn't find an ...
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2answers
182 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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2answers
284 views

Cocos2d savegame cctmxtiledmap

my game features several tilemaps that are initially loaded from a tmx file and modified during gameplay. How can I save the changed tilemaps in a save game? Will NSCoding do the trick here or is the ...
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0answers
45 views

Ray casting not checking in front of sprite

I posted this on stack overflow and didn't get many responses, maybe this exchange is better suited. I rotate my sprite to make sure its facing the direction its going like this in my update method: ...
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1answer
80 views

How to use UILongPressGestureRecognizer with sprite drag & wait?

May be it's asked before also but I couldn't find any good answer. Please tell me how this can be implemented with UILongPressGestureRecognizer? A user drags a sprite from X location to Y location. ...
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1answer
25 views

Stop schedule on gameOver

I have 2 events running through time in my game. I want that when gameover starts, this events stops running This is my code: - (void)onEnter { [super onEnter]; [self ...
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2answers
100 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
69 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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0answers
14 views

Prismatic Joint causes a crash-Box2D(cocos2d)

tried to set up a prismatic joint, but I get this error upon run time: Assertion failed: (IsLocked() == false), function CreateBody, file ...
3
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1answer
92 views

Is it better to preserve scenes in memory or recreate them every time I need them?

I am using Cocos Builder to create scenes using sceneWithNodeGraphFromFile:owner:. Now I have doubts about whether it's better, on iOS, to save some memory or CPU cycles. In other words I have two ...
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0answers
35 views

Building a guided tracing scene

I'm trying to figure out an approach to creating a cocos2d scene that would help kiddos learn to draw letters of the alphabet. Right now I am just using Apple’s PaintView demo code and applying an ...
3
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1answer
191 views

Verify which bubble is connected to top using DFS

I am working on a bubble shooter game in this game i have implemented searching using DFS as suggested in this link, and this is working fine. Update Here is my code for DFS ...
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1answer
265 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
44 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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0answers
82 views

OpenGL error 0x0506 in -[CCSprite draw] 530 to run project on ios divice in cocos2d?

I am running my cocos2d program on simulator. It works fine but when I run it on device, it throws error OpenGL error 0x0506 in -[CCSprite draw] 530. In my program I want to push one scene to another ...
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1answer
38 views

How set and count Angle of sprite (turret) object in portrait mode in cocos2d?

I am new in cocos2d.I follow Raywenderlich tutorial series. I wish to set turrets in below of the screen in portrait mode.when user touch that location fire bullet and turret fire position at the ...
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1answer
79 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
288 views

How can I load a large tile map with cocos2d?

I am try to design a cocos2d game with a big world. The world's tile map is very big, maybe 20 iPad screen sizes worth of tiles. I want to know how to load this using a CCTMXTiledMap? If I directly ...
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0answers
22 views

Push viewcontroller to ccscene take moretime and more memory uses in cocos2d?

Hello friends I am push ViewController to CCscene successfully but when I click on "Push Button" it takes 5-6 seconds to push to CCScene. Also, each time memory use increases. It's not smooth. ...
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0answers
96 views

Cocos2D - Simulating infinite scrolling

I have a BIG problem!! I want to make something like old space shooter games like “Asteroids”, where the ship, when going out of the screen, is reappearing at the other side. For example, when the ...
0
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1answer
46 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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3answers
1k views

Moving camera in large view

In my cocos2d app I was wondering how to make a CCSprite move on the screen but have the screen focused on the CCSprite, so when the sprite moves the view moves with the CCSprite. Is there a tutorial ...
2
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2answers
1k views

Detecting right/left collisions with a bounding box

I'm building a platformer in cocos2d, my first game project. I'm working on movement and collision detection. I'm using a tilemap with a "meta" layer of invisible blocks that are designated ...
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0answers
292 views

Cocos2d-x CCFollow Zooming issue

Hi I am currently building a cocos2d-x game which incorporates pinch zoom using CCLayerPanZoom class which can be found here The problem is basically when using CCFollow and zooming and out, it ...
1
vote
1answer
807 views

3d transformation of game world keeping gameplay 2d - COCOS2D 2.0

Using: COCOS2D + iOS. I want to rotate the game world, may be loading another .tmx file for another dimensions when user want to switch dimension. the effect what I am looking for is something like ...
2
votes
1answer
122 views

iOS Game that Runs Continuously in Background

I'm trying to understand the most logical way of creating an iOS game that runs continuously in the background. For example.. you have tower and enemy waves. The game has endless enemy waves even ...
0
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1answer
92 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 ...
0
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1answer
69 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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vote
3answers
123 views

Getting different x and y coordinates for touched location on a zoomed view

I'm using Cocos2d for developing a game. I need to be able to pan and zoom when necessary, so for this reason I've added CCLayerPanZoom extension to my project. Recently I've noticed a problem with ...
0
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1answer
206 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
461 views

Store and create game objects at positions along terrain

I have a circular character that rolls down terrain like that shown in the picture below. The terrain is created from an array holding 1000 points. The ground is drawn one screen width infront and ...
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1answer
205 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
124 views

How do you align the edges of sprites?

If you have SpriteA and SpriteB. SpriteB is a child of SpriteA. Does anyone have a mechanism to come up with the left, right, top, side of a boundingbox() of SpriteA? What I'd like to do is align ...
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0answers
100 views

How do I find the rotation point given a touch anchor, new position and new rotation?

I've got an Cocos2d layer which anchorPoint, position and rotation (according to http://www.qcmat.com/understanding-anchorpoint-in-cocos2d/) vary when the pinch zoom gestures. Everything works fine. ...