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

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2
votes
1answer
328 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 ...
0
votes
1answer
683 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: ...
2
votes
1answer
5k 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 ...
-2
votes
1answer
1k 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 ...
-1
votes
1answer
506 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 ...
1
vote
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 ...
4
votes
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. ...
-2
votes
1answer
1k 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.
0
votes
1answer
344 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 = ...
0
votes
2answers
173 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.
2
votes
1answer
197 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 ...
0
votes
1answer
637 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
2
votes
1answer
501 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
votes
1answer
496 views

Cocos2d: Tongue effect like in Munch Time

I'm wanting to do a tongue effect for my character like the one in Munch Time( shown in pic ). The player does some action and his tongue attaches to the nearest platform. I'm thinking this is ...
1
vote
1answer
337 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 ...
3
votes
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 ...
3
votes
1answer
512 views

Smoothing rotation

I've spent the last three days trying to work out how to rotate a sprite smoothly depending on the velocity.x value of the sprite. I'm using this: float Proportion = 9.5; float maxDiff = 200; float ...
1
vote
2answers
752 views

Using two joysticks in Cocos2D

Here is what I am trying to do: With the left joystick the player can steer the figure and with the right joystick it can attack. Problem is that the left joystick seems to get all the input, the ...
0
votes
1answer
223 views

Rotation based on x coordinate and x velocity?

-(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration { float deceleration = 0.3f, sensitivity = 8.0f, maxVelocity = 150; // adjust velocity based on ...
0
votes
2answers
1k views

Top down water view, cocos2d

Has anyone successfully created a top down view of a stream/river? I need to also work out how to make it look like a boat is cutting through the water.
0
votes
1answer
785 views

Cocos2D: Change animation based on joystick direction

I'm trying to get my figure to look in the right directions, based on the input of the joystick. So if I tilt left it looks left and the left animation is used, if I used right, it looks right and ...
0
votes
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 ...
2
votes
1answer
388 views

Image 1 becomes image 2 with sliding effect from left to right?

I would like to show a second image appearing while a "door" is closing on my character. I've got my character in the middle of the screen and a door coming from the left. When the door passes my ...
-1
votes
1answer
166 views

Make a CCSprite come up from bottom of the screen in intervals

I have a cocos2d iOS app. I have a CCSprite that I need to come up from the bottom of the screen every few seconds (like 2 or 3 seconds). How would I do this?
0
votes
1answer
900 views

Shaders in Cocos2d 2.0

I'm thinking of using cocos2d 2.0 for my next project and am wanting to know if it's possible to have a shader that renders to a texture and that texture be input into another shader? I have a few ...
1
vote
1answer
506 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
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 ...
1
vote
2answers
680 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
1
vote
1answer
792 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 ...
2
votes
1answer
506 views

Cocos2d particle system

I have a fire particle emitter in my project and I have it following a football. My goal is to make the football look like it is on fire but the problem is when I add it to the screen it can only be ...
6
votes
1answer
716 views

Puzzle game: clipping of non-convex polygons on the figures

I have an original figure in the SVG file. I need to break it randomly on parts, an example of which is specified below: I have an idea, to use for partitioning Voronoi diagram (Fortune's algorithm). ...
-3
votes
1answer
185 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 ...
4
votes
1answer
595 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 ...
0
votes
1answer
643 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. ...
-4
votes
1answer
431 views

“Null Pointer Exception” Animating sprite in cocos2d android [closed]

I am converting this monkey jump game tutorial in android. I have done til monkey sliding right to left and left to right but I am stuck in the part of monkey walking animation. I have tried but ...
1
vote
0answers
311 views

Cocos2D and iPhone's accelerometer [closed]

good afternoon! Today I've started to develop a game and I got a trouble. So, first at all I would like to say that I have no experience developing games... So, I've a CCSprite in the layer and I ...
0
votes
1answer
492 views

How do I manage the visibility of enemy spawn locations in a long scrolling shooter?

How do I handle the situation of an enemy spawn place being visible on a screen in a scrolling shooter? The tutorials I have seen are about setting all the enemies on a whole map only. But it is not ...
1
vote
2answers
728 views

CCSpriteFrameCache: Frame '%s' not found

I have just started using the Cocos2D library for Android. I am trying to make a walking bear animation. For that I am using a CCSpriteFrameCache, but I'm getting a "frame not found" error in the ...
1
vote
1answer
1k views

Best way to create a level editor in java [closed]

I am creating an iPhone game using cocos2d + box2d that needs a lot of levels. My friends and I are creating the game and most of them have no programming experience and end up with nothing to do. I ...
1
vote
3answers
577 views

How to expose game data in the game without a singelton?

I'm quite new to cocos2d and games programming, and am currently I am writing a game that is currently in Prototype stage. Everything is going okay, but I've realized a potentially big problem and I ...
-1
votes
1answer
322 views

How to integrate ad mob ads in cocos2d android portal?

Could anybody tell me how to integrate ad mob ads in my cocos2d android app.
0
votes
3answers
2k views

How to make game sessions like “with friends” games?

I want to make a game like "words with friends" or "chess with friends" or "Draw Something" or any of the other online multiplayer type games that are based around friends having game sessions with ...
1
vote
2answers
998 views

Cocos2d: Adding a CCSequence to a CCArray

I have a problem with an action performed by a sprite. I have one CCSequence in a CCArray and I have an scheduled method (is called every 5 seconds) that make the sprite run the action. The action is ...
1
vote
2answers
3k views

Problem using ccTouchesEnded/ccTouchesBegan to move sprite in cocos2d-x?

I'm using ccTouchesBegan/ccTouchesEnded to move sprite from one point to another but I'm having problem, if i give two or more consecutive inputs one by one while sprite is moving(runAction is being ...
2
votes
2answers
749 views

Importing a windows project into android using cocos2d-x

What I am trying to do today is to import a full project to Android, but no tutorials are available for that that I have seen. My approach was to create a new android project, copy all the classes and ...
3
votes
2answers
7k views

Create an infinite scroll using CCParallaxNode in Cocos2D-X

I'm trying to create an infinite scroll using two images in a CCParallaxNode, making one move to the end of the scroll when it gets off the screen. I have tried several implementations but none has ...
2
votes
0answers
1k views

Opening URL in browser using C++ with cocos2d-x in iOS [closed]

I'm banging my brain against the wonderful lib xport that is cocos2d-x from the original cocos2d iOS library. What I want to ask is how to open a web link in the safari browser? I don' know how to ...
1
vote
0answers
318 views

Which game engine is more worthwhile for mobile game development [closed]

I have been thinking of starting to learn mobile game development. I recently learned that there are three popular game engines available for android: AndEngine cocos2d-android libGdx you guys ...
5
votes
1answer
2k views

Creating an isometric map with hexagonal tiles for iPad

I'm new to game development, so I need a little help. I have to write down a little game which has a floor with hexagonal tiles but it must be seen in a isometric view like The Sims. Ignoring the ...
3
votes
2answers
393 views

How to move the object(tanker ) on slope image in chipmunk Spacemanager

I have used one polygon shape image (terrain)in my game its just like mountain and now i want to move the tanker on mountain path from one direction to other and then its turn on touching of the ...