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

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3
votes
1answer
323 views

How can I speed up cocos2d game engine?

I am developing a tower-defense game and I want to permit user to change game engine speed ,for example rotation speed of towers,rockets speed ,enemies moving speed ,counters and etc proportionally. ...
1
vote
1answer
397 views

Cocos2d/Cocos2d-x Attaching an arrow (sprite) to another body sprite (person)

I am trying to set up a simple bow and arrow game. When the arrow hits the enemy body, the arrow's body is deleted and the arrow sprite continues to update, keeping the position correct in relation to ...
0
votes
0answers
237 views

How to get location of sprite placed on rotating circle in Cocos2d android?

I am developing a game using Cocos2d, and I got stuck when trying to find the location of a sprite placed on a rotating circle on the background. When I hit at a certain position on the circle it's ...
2
votes
2answers
2k views

How to pause and unpause the Particular action of a sprite?

My game has a sprite representing a character. When the character picks up an item, the sprite should stop moving for a period of time. I use CCbezier to make the sprite move, like this: sprite-&...
0
votes
1answer
727 views

How do I rotate a sprite with ccbezierTo in cocos2d-x?

In cocos2d-x, I move a sprite with ccbezierTo like this: // use for ccbezierTo bezier.controlPoint_1 = ccp(m_fish->getPositionX() + 200, visibleSize.height/2 + 300); bezier.controlPoint_2 = ccp(...
5
votes
1answer
6k views

difference between cocos2d-x vs cocos2d-js

I'm just moving towards native apps... A friend of mine told me to start with cocos2d, I'm good in javascript. While searching google for cocos2d, and within cocos2d-x.org I found cocos2d-x cocos2d-...
0
votes
0answers
79 views

iOS + cocos2d: how to account for sprite's position for the different device dimensions in an universal app? [duplicate]

All the questions I've seen regarding iOS universal apps (with or without cocos2d) deal with the "how to add graphics to a universal app". My question is, how does the code need to be written to ...
1
vote
1answer
387 views

applyAngularVelocity causes error when called right after object instantiation

I'm trying to make a physicsBody rotate as soon as it is instantiated. CCNode* ball = [CCBReader load:@"Ball"]; [ball.physicsBody applyForce:force]; [ball.physicsBody applyAngularImpulse:...
1
vote
0answers
319 views

Cocos2D v3 and Physics simulation on server

I'm trying to develop a real time multiplayer game using Cococs2d v3. The game is basically a side scrolling racing game. I wanted to develop the client using Cococs2d for iPhone, and the server side ...
0
votes
1answer
390 views

Determine speed of sprite

I'm trying to calculate the speed of my sprites in Cocos2d but I'm having some difficulties. I'm not sure which units of time/speed cocos2d uses. My background sprite moves 2 positions to left each ....
0
votes
1answer
218 views

Mobile: Physics and movement actions

I've been using spritekit for a while for a few small games. One thing I've noticed is that spritekit is the first game framework I've used that allows me to apply move actions to physics bodies. (...
1
vote
1answer
2k views

Cocos2D - Fill a Sprite with a pattern

I have a CCSprite with a certain shape in Cocos2D and I would like to fill it with a pattern, as seen here: I've seen a lot of examples where they fill a rectangle with a pattern, or even a ...
1
vote
1answer
1k 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 ...
0
votes
1answer
215 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 ...
1
vote
1answer
85 views

Clay Jam continuous path/tap

I saw this game Clay Jam, that the user can create a path in the sand. The path is a continuous one, and it can varies from a single point to curves. How one can develop smooth and continuous paths?
-2
votes
1answer
888 views

How can I locate the frames of a spritesheet PNG based on this PLIST data?

Someone asked me to reskin a certain game. Now he only sent me the whole sprite PNG and PLIST files of the sprites. He instructed me to rename each sprite with the same name corresponding to each ...
3
votes
1answer
247 views

Do SpriteBuilder's Smart Sprite Sheet need to be loaded to memory?

When I create an Smart Sprite Sheet Folder using SpriteBuilder and publish it, must I load that SpriteSheet into memory "FrameCache" with code or does SpriteBuilder do this automatically (so I just ...
2
votes
2answers
220 views

Finding diagonal objects of an object in 3d space

Using Unity3d, I have a array which is having 8 GameObjects in grid and one object (which is already known) is in center like this where K is already known object. All objects are equidistant from ...
0
votes
1answer
268 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 ...
-4
votes
1answer
124 views

How can I develop a game for iOS? [closed]

I have a Mac arriving in the next few weeks, and plan to program a 2d game. I know a little bit of Java but nothing about Objective C. I've heard about cocos2d -- it seems good but I don't know ...
1
vote
0answers
68 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 ...
-1
votes
1answer
201 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?
2
votes
3answers
319 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 ...
0
votes
1answer
178 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
1answer
253 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
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0answers
412 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
votes
1answer
116 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. ...
0
votes
3answers
695 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
994 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 ...
-1
votes
1answer
165 views

Collision function calls before colliding

My Box2D contact listener class is calling post solve and beginning the contact function before colliding? This is causing my object to bounce back before hitting the ground. What could be causing ...
4
votes
1answer
90 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
594 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 ...
0
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0answers
1k views

Cocos2dx- Draw primitives(polygons) on Update

In my game I'm trying to draw polygons on on each step i.e. update method. I call draw() method to draw new polygon with dynamic vertices. Following is my code: void HelloWorld::draw () { ...
1
vote
0answers
649 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 does'...
1
vote
1answer
398 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
votes
1answer
728 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
497 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
1answer
574 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 ...
2
votes
2answers
135 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 ...
3
votes
1answer
2k 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: http://www.cocos2d-iphone.org/forums/topic/pixel-perfect-...
1
vote
0answers
281 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 ...
3
votes
2answers
345 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
889 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
493 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 = CCParallaxNodeExtras::node()...
0
votes
1answer
241 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 ...
0
votes
0answers
283 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. ...
0
votes
1answer
1k 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 longer,...
2
votes
1answer
89 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
410 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
372 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 ...