cocos2d is a free open-source framework for building 2D games, demos, and other graphical/interactive applications.
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1answer
12 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 ...
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0answers
21 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
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0answers
53 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
26 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 ...
-2
votes
1answer
110 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.
...
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votes
1answer
79 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” ...
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0answers
68 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 ...
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1answer
72 views
cocos2d collision detection between two ccsprites i am using boundingBox but this method is not working
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 ...
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2answers
47 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 ...
2
votes
1answer
152 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: ...
1
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0answers
54 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 ...
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33 views
cocos2d playbackground music stops drawing sprites
I am using cocos2d v2 and experiencing a very strange behaviour.
I have a couple of audio tracks which are supposed to be played as background music one after another. But I noticed when these tracks ...
3
votes
2answers
99 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
96 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
74 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 = ...
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votes
1answer
103 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 ...
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votes
0answers
50 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.
...
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votes
1answer
75 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 ...
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0answers
78 views
Browser resize and orientation change in cocos2d html5
I'm currently starting a new project with cocos2d-html5. But I already stumbled upon quite a problem. If I load my game in a mobile browser and change the device orientation e.g. from portrait to ...
0
votes
1answer
35 views
How to use UILongPressGestureRecognizer with sprite drag & wait?
May be it's asked before also but I couldn't find any good answer.
Please tell me how this can be implemented with UILongPressGestureRecognizer?
A user drags a sprite from X location to Y location. ...
1
vote
0answers
32 views
UITapGestureRecognizer fast tapping not working
I have initialized UITapGesture as follows:
tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
tapGestureRecognizer.numberOfTapsRequired = ...
2
votes
1answer
56 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:
...
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votes
1answer
83 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?
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0answers
145 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 ...
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vote
1answer
53 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 ...
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vote
0answers
40 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 ...
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votes
1answer
58 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
65 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
95 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 ...
1
vote
1answer
54 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 ...
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votes
1answer
96 views
How to create a rectangle shape in cocos2d-android
I am new to cocos2d-android. I want to create a rectangle shape in the scene .for that i am trying to do something like this.
CGRect rect = CGRect.make(x,y,70,70);
But it was not displaying the ...
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votes
2answers
44 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
224 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
163 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 ...
1
vote
1answer
186 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 ...
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votes
0answers
45 views
NSNotificationCenter or array of delegates to broadcast information?
I'm writing a buff class that will have a delegate to the caster and an array of delegates that call the affected objects (can be tiles or sprites).
After some research on how to create an ...
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votes
2answers
127 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 ...
1
vote
1answer
78 views
Cocos-2D asteroids style movement (iOS)
So I have a CCSprite subclass, well call this Spaceship. Spaceship needs to move on a loop, until I say othersise by calling a method. The method should look something like
- ...
0
votes
0answers
76 views
how to use TextFieldTTF in cocos2d html 5
i currently have this
var textField = cc.TextFieldTTF.create("",
"arial",
32);
this.addChild(textField);
but for some reasin it's not working
please help thanks
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votes
0answers
43 views
how to set resolution in cocos2d html5 game
how can i change or init game with specific resolution
is there something like setResolution(width,height) available ?
please hellp thanks in advance
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votes
0answers
67 views
How to get sprites react to touches in cocos2d-android
i have 1 gun when tap on any area on the screen bullets fires out, but according to my requirement there are 3 guns(sprites) when touched on any of the sprites bullets must fire up, when googled i ...
0
votes
0answers
102 views
Android cocos2d getting collision detection to work only on some frames of animation
I have an animated bomb sprite in my game and use CGRect for collision detection:
for (CCSprite bomb : _bombs) {
CGRect bombRect = CGRect.make(bomb.getPosition().x - (scaleFactor * ...
0
votes
1answer
324 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 = ...
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votes
0answers
29 views
Auditioning audio in real-time on iOS game
I've heard of fmod which is an audio engine came with fmod studio to adjust sounds in real-time while testing a game. But fmod requires a huge license fee so I'm looking for free alternative to fmod ...
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votes
1answer
172 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 = ...
2
votes
1answer
110 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 ...
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0answers
53 views
Best strategy to group multiple CCPhysicsSprite into a single game character. [Cocos2d + Chipmunk]
It is my first game using Cocos2D with Chipmunk and I have a bit of a novice question.
I am using the CCPhysicsSprite to create different parts of a character. I would like to be able to group these ...
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0answers
66 views
Catching an object from sky in Cocos2d and Box2d world
My world has a gravity of -9.8 and there are KDynamicBodyType bodies falling from the sky. At the bottom there is a PhysicsSprite with KinematicBodyType. I want the PhysicsSprite to be able to catch ...
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votes
0answers
73 views
Texture / CCSprite Loading and Unloading
Here I want to know how textures are loaded and unloaded in the game by cocos2d/cocos2d-x?
Basically I am a developer of AndEngine and started working with cocos2d-x. In AndEngine, we have ...
5
votes
1answer
272 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 ...
