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

learn more… | top users | synonyms

-1
votes
1answer
123 views

How to swap the position of two sprites? [closed]

I'm making a game like Candy Crush with Cocos2D in Android. I've made the sprites but I want to swap to sprites by touch . How to swap the position of two sprites?
0
votes
1answer
93 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 ...
0
votes
1answer
115 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.
0
votes
0answers
190 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 ...
4
votes
1answer
69 views

Can I create cocos2d animations without using Xcode?

I need to have someone do animation work for an iOS game I'm developing (using cocos2d), however this person does not have a Mac and as such cannot run Xcode. Is there a way for them to create ...
0
votes
1answer
66 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. ...
1
vote
3answers
2k 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
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 ...
0
votes
3answers
327 views

How can I create a tile set that will allow me to render a soccer pitch in perspective?

I am making a soccer game that needs a large pitch image (the whole play field area is about 3300 * 1200 pixels). I know I should use the Tiled map editor to create a tile map so that I can create ...
8
votes
2answers
465 views

What is the standard way to synchronize sound effects with sprite animations?

Let's take a situation where you have an RPG with spells and each spell animations have a different number of frames and they have very different requirements for sound effects. Let's assume that each ...
0
votes
1answer
290 views

cocos2dx- set draw() method interval time

What is the default interval of draw method call in cocos2dx engine? Can we set it manually? I couldn't find much information about it online. After researching a bit I found that update() method ...
1
vote
0answers
361 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
126 views

How can I set a system's emission rate using Particle Designer 2.0?

In cocos2d-iphone (2.1), CCParticleSystem has a property called emissionRate. Is there any way to set it using Particle Designer 2.0? I've tried all the various settings but there doesn't seem to be ...
1
vote
1answer
935 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
375 views

how to predict enemy postion to shoot bullet same kingdom rush

i'm doing a tower defense game same kingdom rush, enemy can run curve not only linearly. i found this link : 2D tower defense - A bullet to an enemy but this link use only for enemy run linearly. ...
0
votes
1answer
278 views

cocos2d collision detection between two ccsprites i am using boundingBox but this method is not working [closed]

I am making a cocos2d side scroller and I am currently putting collision detection in. I have an enemy that shoots at the player. I want to have the bullets disappear when they hit the player. The ...
0
votes
1answer
221 views

Tile Maps and vertexZ order for sprites

Here is the setup. I have a orthogonal tile map made with Tiled. There are 5 layers. The bottom 4 comprise the background, while the top layer is the foreground that I will refer to as the “tree” ...
0
votes
0answers
133 views

Game issue occur in 4.3 Android Version?

CCScene doesn't show anything on 4.3 version? I am working on a project in which I'm using the cocos2d_android.jar and on the 4.3 version the screen goes blank and music/ccTouches/others things ...
1
vote
1answer
150 views

cocos2d ccTouchEnded: Removing a Touch

These are my ccTouch__ methods. Note that I am using the singular form of the functions (ie. ccTouchBegan v. ccTouchesBegan (don't know if that has anything to do with it, but it can't hurt to point ...
0
votes
1answer
397 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 ...
1
vote
1answer
484 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 ...
1
vote
0answers
149 views

Using fully cropped sprites with TexturePacker and Cocos2d

When using texturepacker, you can set your trim-mode to crop. This is nice, because when a sprite loads in cocos2d your bounding box will only be the visible area of your sprite - which is useful for ...
1
vote
1answer
248 views

Sprite sheet resolutions and Tile Maps

I am making a game using Cocos2d-x and want to support multiple mobile phone resolutions and sizes. Right now I have made my game sprite sheets set on a resolution of iPad Retina's resolution of ...
3
votes
2answers
204 views

Box2d : How to apply a force to keep swinging from left to right?

i'm losing myself in this... Situation: Working on a game in cocos2d with box2d and I have a ropejoint between one fixed body and one dynamic body. When I drop the dynamic body is swings from left ...
1
vote
1answer
253 views

Converting data file of Sprite Atlas from JSON to Cocos 2D

I have an existing Sprite Atlas with its data file in JSON format. How do I convert it for use with Cocos 2D and other frameworks ? I tried poking around in Texture Packer which supports publishing ...
0
votes
1answer
262 views

How to get position of CCSprite added to CCParallaxNode?

I have a CCparallaxNodeExtras that scrolls infinite (following the space game tutorial). I added as a child a CCSprite made of other CCSprite, like this: _backgroundNode = ...
0
votes
1answer
140 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 ...
6
votes
3answers
1k views

top down game - checking, drawing enemy's line of sight area with obstacles

Examples of what i'm going to need: I'm using cocos2d to draw a CCTMXTiledMap, on those tiles i'll have to draw the LOS cone. How would i test if the player is within that cone, taking obstacles ...
0
votes
0answers
127 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. ...
12
votes
5answers
1k views

tunnel effect cocos2d

I am looking to create a similar tunnel effect in COCOS2D (iOS). Could anyone suggest any pointers? ref Video 1 ref Video 2 Till now I have tried with several ring shape sprites with decreasing ...
1
vote
0answers
202 views

Image Texture Tracing Algorithm - Cocos2D Box2D

Context: I am working on a 2D Destructible Terrain engine for Cocos2D with Box2D. All images, when a level loads, have their border's traced and cached for the purposes of forming Box2D b2EdgeShape ...
1
vote
0answers
109 views

UITapGestureRecognizer fast tapping not working [closed]

I have initialized UITapGesture as follows: tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)]; tapGestureRecognizer.numberOfTapsRequired = ...
2
votes
1answer
81 views

Display CCSprites with a delay

I am a beginner in cocos2d and I wanted to display coin CCSprites as soon as it moves off the screen with a 5 second delay. So this is what I wrote in my main gameplay layer to add 7 coins in a row: ...
0
votes
1answer
218 views

How to Initilize CCPoint Array from String?

I've got string like this: {{0,168},{20,20}}, here indicates two points. I want to get them out to initialize my CCPoint. Do you guys know how to convert this?
1
vote
0answers
127 views

Using CAShaperLayer within COCOS2d

My class X is interited from CCLayer. @interface X : CCLayer Then in X, I added an instance variable of type CAShapeLayer. CAShapeLayer *_Circle I drew the Circle using UIBezierPath. Now if I try ...
0
votes
1answer
138 views

Cocos2D SpriteBatchNode vrs. SpriteFrameCache… I do not see any performance difference

I have tried using both ways... adding the .png file on the cache with SpriteFrameCache.. adding .plist with spritebatchnode adding the correspoding .png file, I didnt see any performance ...
1
vote
1answer
124 views

Cocos2D: Box2D body that is movable by one type of object but not another

I'm in the process of creating a simple platform game using Cocos2D 2.0 and Box2D. I'm trying to create a kind of crate object that cannot be moved by the player, but that can be moved by an elephant ...
1
vote
1answer
112 views

Why are my sprite sheet's frames not visible in Cocos Builder?

I have created a sprite sheet with zwoptex. Then I just dragged the .plist and .png files to my Cocos Builder project. After this I wanted to take a sprite frame and set it to a sprite: But the ...
1
vote
1answer
136 views

Determining explosion radius damage - Circle to Rectangle 2D

One of the Cocos2D games I am working on has circular explosion effects. These explosion effects need to deal a percentage of their set maximum damage to all game characters (represented by ...
0
votes
2answers
154 views

Cocos2d sprite's parent not reflecting true scale value

I am encountering issues with determining a CCSprite's parent node's scale value. In my game I have a class that extends CCLayer and scales itself based on game triggers. Certain child sprites of ...
1
vote
1answer
1k views

Setting Higher Z-Index for Sprite

For my game, I have to set highest z index for my sprite. At present, I wrote following code but didn't work for me. Sprite houseSprite = new Sprite(pX, pY, ...
6
votes
1answer
234 views

Best way to determine surface normal for a group of pixels?

One of my current endeavors is creating a 2D destructible terrain engine for iOS Cocos2D (See https://github.com/crebstar/PWNDestructibleTerrain ). It is in an infant stages no doubt, but I have made ...
0
votes
2answers
167 views

Serious gameplay issue by spawning enemies according to elapsed time

EDIT: I have changed the title as I think that this is a general gamedevelopment question but, on a technical note, I am using Cocos2d v2.0 Some time ago I had asked a question on which was the most ...
3
votes
4answers
9k 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 ...
0
votes
1answer
891 views

Android cocos2d getting a sprite to continuously move to a dynamic position

I tried using the MoveTo method in cocos2d to get a sprite to continuously follow my player sprite: CCMoveTo actionMove = CCMoveTo.action(actualDuration, player.getPosition()); CCSequence actions = ...
0
votes
2answers
146 views

Can CCAnimations be paused?

I am new to cocos2d. I am using CCAnimation. It's working fine, except I want to pause the animation occasionally. How do I do this? Here's what I'm doing so far: [mySprite ...
0
votes
1answer
892 views

Android cocos2d removing a sprite after animation

I have an object going across the screen with an animation using the following code: CCSpriteFrameCache.sharedSpriteFrameCache().addSpriteFrames("ninjastar.plist"); CCSpriteSheet projectileSheet = ...
3
votes
1answer
152 views

Snapping of irregular images in iphone puzzle app

I am working on puzzle app in which i need to snap irregular shapes as they come in contact of one another as i am new to game development so i dont have any idea how to achieve this functionality in ...
0
votes
1answer
111 views

using lua in kobold2d to control parameters

Is there a tutorial on using LUA in Kobold2d? I want to know if its possible to use it to control the game behavior (like max speed decrease of timer, and bonus points) by uploading a new script to ...
5
votes
1answer
379 views

How to flip card by a corner?

After searching "flip card" in google and our stackexchange site, there is no result and I have no ideas about how to flip a card by a corner. I am developing a ios card game with cocos2d, in this ...