Objective-C is a general-purpose, high-level, object-oriented programming language. It's mainly used for game development on Apple iOS and Mac OS devices, however it's not limitied to this platforms.
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implementing Unlocked characters for iPhone [closed]
If i use Score number instead of HighScore number the hidden character is unlocked and is visible when the user loses the game. However, once the user plays the game again, since score starts from 0 ...
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0answers
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CCActionMoveBy doesnot working properly when the action called for many of the sprite in cocos2d
I have an issue with CCActionMoveBy when I call the movement action for many of my sprites. I need to move to a certain position and then remove it from the scene.
My problem is If the call the ...
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0answers
24 views
Cocos2D v3 CCParallaxNode scrolling can't keep player in focus
I am very fresher to game development and I need to develop a game like NinjaJump.
I have created a CCParallaxNode to setup scrolling background and added CCPhysicsNode to setup Physics world. I have ...
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1answer
87 views
How can I test if an oriented rectangle contains another oriented rectangle?
I have the following situation:
To detect whether is the red rectangle is inside orange area I use this function:
- (BOOL)isTile:(CGPoint)tile insideCustomAreaMin:(CGPoint)min max:(CGPoint)max {
...
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1answer
48 views
Scrolling effect after touch
i'm making map for a game and need to make scrolling of map, so the main thing what i need is to calculate speed and move layer after player remove finger from screen.
I make it my own, but i think ...
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55 views
sprite kit xcode CGPoint
Hi I am a newbie in this sprite kit xcode.
So I am planning to place three cards on the view which I add them to the background. However I wanted to combine two of the cards and replace the first ...
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1answer
178 views
How should I structure my code to add enemies?
So I am currently making a 1942-style game in Sprite Kit. I've reached the point where I am finished implementing pretty much everything (movement, shooting (also recognizing a hit and exploding an ...
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1answer
69 views
cocos2d + sneakyinput joystick multitouch problem
I've added a joystick to my iOS game using the latest SneakyInput joystick code for cocos2d v3. It works well, but when a CCButton I have is pressed, the joystick touch event ends.
Based on my ...
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37 views
CCTextField won't appear
I can't seem to add a CCTextField in my physics node, I tried all different methods, but it's still not happening.
Here's my code:
CCTextField *tf = [[CCTextField alloc] init];
tf.contentSize = ...
0
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1answer
102 views
Error running an Action in Cocos2d-x
In my game I have a "rocket" type and I want to run a sequence of actions on it. At first it must run an explosion animation and then remove itself from the game. For this I used the following code, ...
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24 views
How can i get latency when using Game Center?
I'm pretty new to network programming. Basically I'm using game center for making a relatively simple iPhone game using Game-center p2p. However i'm now working on a algorithm to improve the ...
0
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0answers
25 views
How can I fix latency problems for car game? [duplicate]
Basically I'm trying to make a online car racing game for IOS using Game Center real time multiplayer. I have setup a timer that sends data every 0.02 seconds to the other player with the current ...
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0answers
145 views
Cocos2dx InApp Purchase for ios
I am trying to integrate In App Purchases in my app made by using cocos2d x c++. I am using easyNdk Helper for In App Purchases. My In App Purchases works perfectly for my Objective C apps. But for ...
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1answer
143 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 ...
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1answer
76 views
Manually remove inactive CCParticleSystem from scene?
When using particle systems that have a lifetime, with CCParticleSystem and its derived classes, should I manually remove the finished systems from their parent nodes once the particle animations are ...
0
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1answer
247 views
I need some help with stopping individual sound effects in OALSimpleAudio
I'm trying to find out how to stop a specific sound effect rather than having to stop all of them.
I'm using OALSimpleAudio.
I can't seem to find how to do it. simple google searches result in ...
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0answers
32 views
How to calculate positions and randoms in scene. SpriteKit [duplicate]
So here is a code :
static inline CGFloat randomInRange(CGFloat low, CGFloat high) {
CGFloat value = arc4random_uniform(UINT32_MAX) / (CGFloat)UINT32_MAX;
return value * (high - low) +low;
}
...
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1answer
484 views
Spritebuilder and CCScrollView, page indicators not showing up?
I'm using Spritebuilder to make my game, and CCScrollView usually saves me quite a bit of time. I'm trying to implement the scroll view much in the same way as the home screen on an iphone uses the ...
5
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1answer
139 views
How can I implement Objective-C libraries in Unity?
I've been a "hardcore" developer for sometime now, as I've always worked with pure code reactive rendering, and contributed to Cocos2d library some time ago , (It is the one I used for my games) . But ...
0
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1answer
157 views
Incorrect sprite rotation with atan2() [duplicate]
I want to rotate a sprite so that it faces the mouse cursor/screen touch location. Currently I'm using the following method to compute the angle of rotation. The input position is the target point the ...
0
votes
1answer
568 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 ...
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2answers
45 views
Count number of CCNodes of a certain class on a layer
Pretty simple question. I'm working in Objective C (cocos2d) and I'm trying to count the number of a sprites of a certain class are present on the current layer being displayed. For example, I have a ...
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1answer
186 views
try to create CCSpriteFrame but get nil values
I'm trying to animate a CCSprite in cocos2d v3 following this question, but I'm getting the following error message in Log:
Terminating app due to uncaught exception 'NSInvalidArgumentException', ...
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1answer
87 views
Box2d stopping the movement of an object
I am in the process of making a game and I need an object to move only when the buttons are pressed. I have a method that begins the movement, and so far I am ending the movement of an object by ...
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0answers
73 views
How can i stack up tiles for Connect4 objective C? [closed]
I am trying to learn Objective C and iOS programming. And I'm trying to build a Connect Four. So Far i got this.
I've been looking around and asking around but I haven't got the answer to my ...
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1answer
103 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 ...
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1answer
463 views
Tower defense endless levels logic sprite kit [closed]
I am making a tower defense game for iOS using Sprite Kit. I would like for my game to support an endless number of levels, like in Bloons TD 5. What approach should I take to implement this?
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1answer
178 views
Help with concrete examples of Perlin Noise variables for terrain generation
I believe this question can help beginner game developers. I've looked through a dozen or so answers on perlin noise here and on Stackoverflow, and found only 1 concrete implementation of perlin noise ...
2
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0answers
36 views
How to implement a property with a base value and a changed value? [duplicate]
I have a number of stats and effects in game that are subject to change, they have some kind of base value and the current value. For stats, I implemented this in a dynamic way, but for less important ...
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2answers
140 views
Architecture - how to refer to skills/abilities internally within code?
I have about 60 skills within my game, which are loaded from a JSON file. Each skill is a subclass of a skill object and has attributes like range, cost, target type, etc. Currently each skill has an ...
1
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1answer
159 views
How to centralize stat/feat/equipment related changes in an RPG?
I have a game with an RPG system where derived stats, like HP,armor, etc depend on a variety of components: armor, stats and feats. I'm running into an issue where the code to change derived metrics ...
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1answer
101 views
Where can I find info on grid based algorithms for stateless AI? [closed]
There seems to be an overwhelming amount of info out there on AI of all kinds, and it's kind hard to digest at once.
For my testing purposes, I'm creating a "typical stateless AI", as described in ...
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1answer
74 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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1answer
319 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 ...
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1answer
110 views
Designing a four-directional movement control
I'm developing an RPG for iOS. Currently, I plan my controls to look like this:
So the user can interact with objects, people, etc. by tapping on the right side of the screen, and moves by swiping ...
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1answer
533 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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2answers
197 views
How do I make an equipped item affect the equipper?
I'm making a small text-based adventure in Objective-C. I have a Player class with four properties which represent the player's attributes (strength, agility, stamina, and intelligence). I also have a ...
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229 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 ...
5
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1answer
250 views
How can I implement a “Nyan Cat” rainbow?
I'm currently making a game similar to this Nyan Cat flash game, although I'm using cocos2d. I'm having a hard time trying to make the rainbow effect:
Currently, every update call I add a piece of ...
1
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1answer
821 views
2D Destructible Terrain with Box2D / Cocos2D -> Image Tracing
Bear with me as this will be a rather lengthy post. For the last month I have been working on an open source Cocos2D, Box2D Destructible Terrain Engine. I have some questions regarding its ...
1
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1answer
143 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 ...
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0answers
303 views
Objective-C Moving UIView along a curved path
I'm not sure if I am approaching this the correct way. In my app, when a user touches the screen I capture the point and create an arc from a fixed point to that touch point. I then want to move a ...
1
vote
1answer
333 views
Mixing Objective-C and C++: Game Loop Parts
I'm trying to write all of my game in C++ except for drawing and game loop timing. Those parts are going to be in Objective-C for iOS.
Right now, I have ViewController handling the update cycle, but ...
0
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2answers
198 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 ...
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1answer
244 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 ...
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1answer
139 views
How to store NPC movement data?
In my 2D tile-based game, I have NPCs that move around on a fixed path. I am putting the information about the NPCs in a .plist file that is loaded on startup. The thing is, I'm not sure how to format ...
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1answer
277 views
Where to put common System functionality in Entity-System Design?
I am working on an Entity System design based largely off of Adam Martin's design and Ray Wenderlich's Objective-C Implementation.
I am working on the AI system using a state machine with a System ...
3
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261 views
Gamepad support for OSX [closed]
What is the most common method for providing gamepad support in an OS X game? I've been using an IOHIDLIB wrapper named DDHIDLib https://github.com/Daij-Djan/DDHidLib and it seems to be working but I ...
0
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1answer
150 views
Set texture of a LHSprite that is loaded from LevelHelper
How do i set the image/texture of an LHSprite that is loaded into xCode using levelHelper & spriteHelper?
I am using sprite sheets. So i tried to load the image the old fashioned way using ...
5
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2answers
606 views
How to combine tap and long hold gesture recognizers?
I have a game in which the player moves around a sprite by tapping on various sections of the screen (left, right, up, down). So far, each tap moves the sprite one tile (I use a tile system for ...
