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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2answers
799 views

How to display image in second layer in Cocos2d

I am very new at Cocos2d and is testing to displaying an image over the "Hello World" text on a second layer and need help to get it work. I guess it is some basic stuff here and appreciate any tips ...
3
votes
3answers
2k views

Jumping a sprite while moving in a Bezier action

I'm creating a game and I need the sprite to jump (move up and down basically) while it's moving on a bezier path so it moves vertically while it still follows the path. If I do this while it's moving ...
2
votes
2answers
613 views

Registering collision on particles

I am using CCParticleSystemQuad to create particle effects. But I want my sprites to be able to collide with particles. Say your character is a dragon, the dragon breath is a particle effect emitting ...
2
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1answer
1k views

Best Method to Create Side Scrolling Levels? - Cocos2D

I am looking to start my first side scroller project using Cocos2D, but I am curious. What is the preferred/best method of creating you levels? For large levels I see hand making it very laborious, is ...
2
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1answer
711 views

How to use Kobold2D/Cocos2D to create a turn-based iOS 5 Game Center game?

I've searched for information on this, but cannot find it, is this not something you can do yet with Kobold2D/Cocos2D? or are there options I've missed?
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1answer
2k views

Cocos2D - How to move sprite on the X axis, using the accelerometer

I'm trying to make a vertical shooter, using Cocos2D and a few tutorials. Unfortunately, most tutorials only show how to make an horizontal shooter. Still, I tried to adapt the code from a horizontal ...
1
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3answers
1k 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 ...
5
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1answer
2k views

(Why) Should I choose Unity 3 or Cocos2d (or something third) for my app? [closed]

My colleague and me made an HTML 5 iPad game ( http://braille.gandzo.com/ ) and we would like to upgrade it, and our framweork is not enoguh, for what we want. Some of the things we would change are: ...
0
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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 ...
2
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1answer
989 views

Making filled circles in cocos2d

How can you make filled-in circles in cocos2d? I understand you have to create a new method, but I don't really understand how it works/how to do it. Could someone please provide maybe an example or ...
2
votes
2answers
706 views

Efficient Bullet Firing Class

I've been struggling with this for a while. I have been trying to create a bullet pool class for a game I have made that doesn't cause a significant fps drop. I have tried creating a bullet pool ...
2
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1answer
488 views

How can I stop the next screen from briefly displaying at the start of a CCTransitionFadeTR?

I am testing transitions in cocos2d, and am running into a problem. I have a MainMenu screen which contains a button. The idea is that clicking on the button will trigger a CCTransitionFadeTR ...
0
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1answer
396 views

BOX2D Kinematic Platform with parallax layer

I am using a kinematic body for my moving platform on x-axis, so I set the linear velocity to b2vec2(5,0). When the player jump on the platform, it works like it is suppose to. But the thing is ...
3
votes
1answer
325 views

Cocos2d — Check if place is free before moving (all objects)

Is there a method in Cocos2d like CGRectIntersectsRect, except instead of limiting it to one sprite, it checks for ALL objects?
1
vote
1answer
1k views

Making an object swing from one rope to another

I am trying to make a Tarzan like game with Cocos2D and Box2D. I am having issues with the physics - making an object swing from one rope to another. I am not really sure how to do this. Could anyone ...
1
vote
1answer
687 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 ...
4
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1answer
799 views

Cocos2D-iPhone, how does the Game Loop work in Cocos2D?

Could anyone theoretically explain how the game loop works in Cocos2D and Objective-C? If you need me to be more specific about what I'm asking, please read on. I've got a rudimentary understanding ...
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1answer
2k views

To move the object (sprite) in all direction with constant speed in touch direction and to follow the touch path

I am developing this game in cocos2d. I want to move a object(airplane) in all direction with constant speed and it should move and flip in the direction of touch point and it should follow path make ...
3
votes
1answer
1k views

Cocos2d animation problem, [__NSCFString rect]: unrecognized selector sent to instance

I am testing (and learning) animation in Cocos2d using a series of .png's called "splash-x.png". I am getting error and at the first sight i thought it was easy to solve but it turned out that i ...
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vote
2answers
532 views

Cocos2D: TileMap performance question

I´ve got a question regarding TileMaps. Each level in my game is going to be determined by the length of the tile map. I would like to create a map that will be about 5 mins (in length) long. I want ...
3
votes
4answers
8k views

What are the pros and cons of GameSalad versus Cocos2D?

I am currently using the Cocos2D framework for creating my game but I just happened to come across GameSalad and was amazed by this video. GameSalad claims to allow you to create games without ...
1
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1answer
451 views

Cocos2D Accelerometer Z axis

I am making a 2D scroller game where the player controls an airplane via the accelerometer I would like to know if it is possible to scale in and to scale out the sprite/airplane using the ...
7
votes
2answers
2k views

How to differentiate a tap from a drag

I'm creating an app and I'm trying to make it so I can drag a sprite (with a second sprite on top) around the screen, but if I just tap the sprite some other method should get called. I got the ...
3
votes
1answer
400 views

How do you incorporate cocos2d with regular iPhone UI widgets?

I want to build a sprite based game using cocos2d. I will be mostly drawing everything in code. I also want to incorporate iPhone UI widgets such as buttons and such. Can these be created to appear on ...
0
votes
1answer
387 views

Where does touch control logic go?

I'm creating a game (or app, depending on how you would define it...) where I'm moving objects (with sprites) on the screen. I've got this to half-work in both scenarios, but I can't seem to get it ...
0
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1answer
165 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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vote
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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0answers
219 views

detect sprites by tag in parallax

I've created 3 layers and added to a parallax node in my game play scene; I don't know why it crashes when I'm enabling touch, self.isTouchEnabled = YES; on one of my layers; I want that touch to be ...
2
votes
1answer
7k views

cocos3d versus Unity for simple IOS 3D games?

Wondering if anyone here happens to have experience in doing some simple 3D based games/apps for IOS, using cocos3d & Unity and could give some pointers....questions I have are: GENERAL 1) It ...
2
votes
2answers
2k views

Cocos2d Composition using CCSpriteBatchNode

I'm making a game in objective-c using cocos2d. I have the following: @interface Player : CCNode { CCSprite *mySprite; CCSpriteBatchNode *sceneSpriteBatchNode; //... } @property ...
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1answer
561 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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3answers
2k views

Making smooth walk/jump/fly etc animations

i am soon gonna start with developing my own game for the iOS, i have the plan and idea of the game ready. BUT i have 1 question. How do people make such a smooth animation? Lets take for example: ...
2
votes
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 ...
1
vote
1answer
329 views

How can I create a curved line composed of images?

I have 50 little images. All are connected each other, as in a line, sort of like a cord. I want to move one of the node images and have the rest follow along like a cord, so they become a curve.
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2answers
1k views

How to animate a flip of a card in Cocos2d?

I am working on a card game and would like to ask if someone could advice me how to implement a flip of a card in Cocos2D?
0
votes
1answer
255 views

Setting up CCMenu for Cocos2d

I am very new to Cocos2d programming and was thinking to build up my first app. I learnt some basics related to CCMenu and CCMenuItems. But I was wondering whether I could provide animations in such a ...
2
votes
2answers
583 views

Physics in carrom like game using cocos2d + Box2D

I am working on carrom like game using cocos2d + Box2D. I set world gravity(0,0), want gravity in z-axis. I set following values for coin and striker body: Coin body (circle with radius - ...
2
votes
1answer
2k views

Objective-c Cocos2d moving a sprite

I hope someone knows how to do the following with cocos2d: I want a sprite to move but not in a single line by using [cocosGuy runAction: [CCMoveTo actionWithDuration:1 position:location]]; What ...
1
vote
1answer
1k views

Smooth animation in Cocos2d for iOS

I move a simple CCSprite around the screen of an iOS device using this code: [self schedule:@selector(update:) interval:0.0167]; - (void) update:(ccTime) delta { CGPoint currPos = self.position; ...
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votes
1answer
153 views

How can I initialize 15-20 sprites with the same starting position?

How can I load 15-20 sprites in Cocos2D at the same point (ccp(20,20), which is an alias for CGPointMake) using NSArray? This is what I'm doing now, and it doesn't work: int i,endvalue=3; ...
2
votes
3answers
2k views

How do I create this underwater effect with Cocos2D?

http://vimeo.com/2461697 Hi everyone, I'm trying to create an effect like this, the underwater effect (water distortion). I've looked around and I've seen references to "water caustics" but I'm not ...
1
vote
1answer
725 views

How to make box2d mouse joint works similar to box2d setposition

I want to make b2mouse joint working similar to b2setposition, though i know in mouse joint force is applied, so it's not possible to reach the desired point without any delay like setPosition(), but ...
5
votes
4answers
1k views

How to port a game from IPad to Iphone [closed]

I just finished developing a 2D side scroll game for the IPad using Cocos2d and Box2d. Now we want to make an IPhone 4 version of the game, but I'm still not sure what is the best way to do it. I ...
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1answer
494 views

How can I solve these errors when using SimpleAudioEngine?

I want to use SimpleAudioEngine for the music in a cocos2d game I'm working on. When I import SimpleAudioEngine.h in my game layer I get syntax errors in CVPixelBuffer.h and CMFormatDescription.h. ...
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0answers
172 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 ...
9
votes
1answer
8k views

Blend Modes in Cocos2D with glBlendFunc

We've been trying to replicate the most common blending modes that are available in Photoshop and Quartz 2D, but we've only come up with 3 and that's after some long searching online. For anyone ...
2
votes
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 ...
1
vote
1answer
375 views

animation in Rhythm game similar to Jubeat Plus

For a school assignment I am planning to make a game similar to Jubeat Plus on the iPad. Right now, I have a counter that gives me each 16th note of a beat, I am reading out a Property List where I ...
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vote
2answers
1k views

Setting up collision using a tilemap and cocos2d

I'm building my first platformer using cocos2d and a tilemap. I'm having trouble coming up with a decent way of determining if the character is colliding with an object. More specifically, in which ...
1
vote
2answers
805 views

How to stretch and rotate an image between two points in cocos2d?

I have an arrow image. I want to stretch this image between two given points. I'm retrieving the points from touch locations, so they aren't fixed. When the user touches the iPad, the arrow image ...