cocos2d is a free open-source framework for building 2D games, demos, and other graphical/interactive applications.
0
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22 views
Cocos2d: some efficient collision detection [on hold]
Is there some way of efficient collision detection rather than looping through my game in cocos2d?
I have a top-down 2d game with a character trying to collect food. And this map is big, like 9 times ...
-1
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0answers
17 views
move body in a rectangular dynamic path [on hold]
i attach an image in that is want to do that a red object should move in a path and the path is not constant all the time it is a rectangle but of different width and height so how i achieve this to ...
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0answers
31 views
Detect object by movement of block [closed]
I am stuck when developing my game at some point
Let suppose i have 3 blocks and one ball
2 blocks of TYPE A which can move in horizontal vertical downward upward direction whenever ball hit it.
...
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1answer
26 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.
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1answer
16 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 ...
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0answers
28 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
22 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.
...
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votes
3answers
125 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
277 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
55 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 ...
0
votes
0answers
75 views
CCParallaxNode Infinite Scrolling for iPhone Cocos2d
I followed Ray Wenderlich’s tutorial on CCParallaxNode and how to make it infinite. I was able to make a continuous scrolling background on the iPad but not on the iPhone. On the iPhone the background ...
3
votes
1answer
33 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
52 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
84 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
181 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
42 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
165 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
116 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
81 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 ...
0
votes
1answer
141 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 ...
0
votes
2answers
60 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
294 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: ...
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0answers
81 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
118 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
143 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
93 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
109 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
66 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
124 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 ...
0
votes
0answers
93 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
51 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. ...
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0answers
42 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
62 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
111 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
154 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
67 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
50 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
69 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
77 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
108 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
81 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 ...
0
votes
1answer
152 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 ...
0
votes
2answers
60 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
384 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
185 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
210 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 ...
0
votes
2answers
137 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
91 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
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0answers
105 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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0answers
51 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
