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

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How to create Elastic rope / Rubber band in box2d?

I am trying to create the rubber band type or elastic rope. i ant to do something like bellow link. http://heyalda.com/smash-turtle/ Thanks,
2
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1answer
234 views

Blending transition in cocos2d

In my cocos2d-iphone game, I have 2 backgrounds (CCnodes), each containing a quite complex hierarchy of sprites. I would like to make a smooth transition between them: initially, only the first ...
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1answer
350 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 ...
2
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1answer
239 views

Handle Multiple Scene

For my game, now I adopt the strategy to create multiple scene. For this I have to ask two question please provide your view for my and other members for improvement. I have created single ...
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1answer
177 views

Simple question about a cocos2d based game template

I am learning a cocos2d based Game template tutorial from here and now I am at this point of the tutorial. My question is, how can i run 30 different scenes in 30 different levels of 5 chapter? Now I ...
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1answer
101 views

How to create strength meter?

I am creating game like bow and arrow. I want my hero will shoot the arrow with the strength meter, how will create the power?
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1answer
393 views

How to execute AI in Cocos2d (replacing the Update method)

What is the best way to run AI in Cocos2d? I already have my AI implementations. Normally I would execute AI in my game loop by checking how much time has elapsed since last AI execution and whether ...
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1answer
206 views

Game design and SoC

I've been working on a little game for the last few months, trying to approach it as a software engineer and employ best patterns and practices in my coding. I have gotten to the point where I have to ...
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1answer
504 views

Running one action on multiple sprites simultaneously

I have created a spiraling animation for a football. I want to be able to run it on 2 sprites simultaneously. This is what I have done: CCAnimation* footballAnim = [CCAnimation ...
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2answers
801 views

Presenting game center leaderboard

I have the following code: -(void)showLeaderboard { GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init]; if (leaderboardController != NULL) { ...
2
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2answers
324 views

Importance of scripting engine at Cocos2d Game Engine

Each Game Engine is different and solves different problems in different ways, so the engine design does vary greatly from engine to engine (even though a lot of principles are shared from engine to ...
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4answers
930 views

Crash when using Cocos2d

Sorry about the poor question title, it's just that this seems to big for a title. So here's the dirt: I am making a game (obviously) and I want the enemies to shoot (not necessarily at the player). ...
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2answers
517 views

Custom Fonts in cocos2d

I have tried Hiero but it has NEVER worked for me. Is there an alternative application for creating fonts for cocos2d? Thanks
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1answer
738 views

Integrating game center into cocos2d

I have a Cocos 2d game in which I want to have achievements and a leader-board. What are the steps I would need to take? Thanks P.S All of the tutorials I have found are outdated. So please write ...
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3answers
1k views

Sprite Animation Software That Works With Cocos2D

So the title basically says it all. I'm looking for software that would help me to create sprite animations that I could use with cocos2d by allowing me to pose a a sprite and the software create ...
3
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1answer
187 views

GUI device for throwing a ball

The hero has a ball, which shall be thrown with accuracy in a court on iPhone/iPad. The player is seen from above, in a 2D view. In game play, the player reach is between 1/15 and 1/6 of the height of ...
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2answers
190 views

Crash due to removal of Elements like CCSprite from NSMutableArray

So, here's how it goes. I am currently working on Cocos2d game, which consists of many Obstacles. One obstacle gets added on the screen at an interval of 10 seconds like this. ObstacleSprite* ...
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1answer
1k views

The best way to structure/design game code [closed]

My question is quite broad and related to the 2D game code design/architecture/structure. Usually the main game consists of the main loop where you update & render your world states. However, ...
0
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1answer
514 views

EXC_BAD_ACCESS error when box2d joint is destroyed

When I destroy the weldJoint in the update method (see below) I get an EXC_BAD_ACCESS error pointing to the line world->DestroyJoint(weldJoint); in the update method below: -(void) update: ...
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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 ...
3
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2answers
366 views

Separating UI and logic in Objective-C at iOS based Games

How to separate UI and logic in Objective-C based mobile games? To develop games, I use Cocos2d library. I need a good reference to separate my UI code from game logic code.
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1answer
232 views

Side scroll game with 8000xScreen_Height, which technique is best

I got one new requirement for iOS side scroll game with screen size : 8000xScreen_Height For this, tileMap is best or normal texture based is best? I need to use parallax background too. Help me to ...
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0answers
234 views

Cocos2d Tiled Dynamic Object Layer

I'm trying to develop a cocos2d tiled based game using a sort of 'dynamic' object layer. What I want to do is after the tiled map is loaded, the user can drag something into the map and that will ...
2
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1answer
409 views

cocos2d/OpenGL multitexturing problem

I've got a simple shader to test multitextureing the problem is both samplers are using same image as their reference. the shader code is basically just this : vec4 mid = ...
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1answer
1k views

use of undeclared identifier 'GL_TEXTURE_COORD_ARRAY'

Anyone please help me .i am working on sneakyjoystick class when i import these class some error are identified they are following :- use of undeclared identifier 'GL_TEXTURE_COORD_ARRAY' use of ...
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1answer
310 views

How to fly enemies like galaxian game enemies?

I am developing game like galaxian and using cocos2d with box2d .I don't have idea how to create enemies like galaxian game enemies and how do they fly over the screen. ...
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1answer
2k views

Cocos2D 2.0 - masking a sprite

I have read this tutorial about how to mask sprites using Cocos2D 2.0. http://www.raywenderlich.com/4428/how-to-mask-a-sprite-with-cocos2d-2-0 But the author talks about OpenGL ES textures and ...
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2answers
802 views

What is the correct way to implement hit detection with non-rectangular sprites?

What is the correct way to implement hit or touch detection for non-rectangular sprites in Cocos2d? I am working on a jigsaw puzzle, so our sprites have some strange forms (jigsaw puzzle bricks). As ...
2
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1answer
286 views

Wheel rotation, to change velocity of vehicle

I update the velocity of my vehicle like so: [v setVelocity: ((2 * 3.14 * 100 * (wheel.getRotationValue / 360) / 30)) * gameSpeed]; // update on 60 fps this gets velocity on all frames divide by 60 ...
2
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1answer
711 views

How to get all child with same tag from CCLayer?

Actually i am working with cocos2d Game. I am using CCLayer for particular scene. now there are so many buttons means CCMenuitems are available. I want to disable that all menuitems having same tags.
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1answer
432 views

My Sprite comes out the screen

If i an action moves the sprite,how can i keep the CCSprite on the screen???? this is my code: [enemy runAction:[CCSequence actions:[CCMoveBy actionWithDuration:2.0 position:ccp(-winSize.width*0.4, ...
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1answer
335 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
500 views

Unit Testing with Cocos2D

How to implement Unit Testing with Cocos2D framework? What are the good practices? Is there any testing framework like JUnit Framework at Eclipse for Android?
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1answer
451 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
1k views

How to animate the sprite along with action in Cocos2d?

Cocos2d-android - I have an animation which has 5 Frames they are close cropped images. Now I want Sprite to do animation as well as Move in X direction.i.e. I have a player running which gets ...
2
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1answer
356 views

Which data structure should I use for dynamically generated platforms?

I'm creating a platform type of game with various types of platforms. Platforms that move, shake, rotate, etc. Multiple types and multiple of each type can be on the screen at once. The platforms will ...
4
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1answer
437 views

Organize a game set

I'm developing a endless running game and I'm not really sure on how to make the set. The first approach was to make a BIG set like 10240x3072 pixels so that we have a nice portion of set. After ...
3
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1answer
234 views

Cocos2D Command-Line Application

Is it possible to create a terminal application which uses cocos2d? I've tried to make one using cocos2d 2.x, but it requires a MacGLView to be initialized. I need it so that I could program a ...
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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 ...
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1answer
3k views

Accelerometer to move player left and right

Please take a look on my code and help me to find problem. I used this tutorial: COCOS2D_ACCELEROMETER_MOVEMENT This works only sometime….some time not move..How can I resolve this problem? Here is ...
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1answer
796 views

Cocos2D game engine javascript is too slow on mobile

i developed a game using cocos2D javascript that works fine on web browsers but when i run it on mobile ( iPhone 4s , android nexus) the FPS was dropped to 20 - 22 on iPhone (max) how to optimize it ...
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1answer
326 views

Help with Music Rhythm Game (Cocos2D)

I'm basically new to the whole idea of Cocos2d.. i am aware of CocosDhension.. however, i still cant get the idea of working around it.. My idea, i would like to try to create something like "Tap ...
3
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1answer
655 views

How do you get textures out of a png file

I have 1 png of many different textures. I want to use these textures in my iphone game using cocos2d. I found the program "Zwoptex" where you can combine many textures to one png and create a plist ...
0
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1answer
2k views

How to simulate a water splash effect?

I need to achieve the effect of a ball falling down into a pool then splashing in the water. At first, I made a sensor to detect the collision between the ball and the water and then show the sprite ...
3
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2answers
1k views

How to achieve smooth gameplay in a physics based multiplayer game? (2d)

I'm using cocos2d 2.0 and Gamekit for networking. I've got a server/client model. It works over wifi (local) and bluetooth. (Xcode 4.3, Objective C) Basically, there's a ball and 2 or more players. ...
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1answer
944 views

Rolling a 3d die in cocos2d

How can I have a 6 sided die in my cocos2d game and when the device is shaked the die rolls and shows a number? I would also use UIKit if it was necessary.
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1answer
286 views

Touching a CGRect

In my cocos2d app I am trying to determine when a CCSprite is touched Here is what I have: -(BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event{ NSMutableArray *targetsToDelete = ...
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2answers
159 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
180 views

Game speed cubic growth

Is it possible, using delta in my update method to increase a game speed variable exponentially on cubic growth (the blue line below) My maths isn't great so I'm not sure how the formula would be ...
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1answer
287 views

Adjust sprite bounds of the visible part of texture

Is there any way to adjust the boundaries of the visible part of the sprite? To make it easier to understand: I have a texture, such as shown at figure 1. Then I break it into pieces and fill the ...