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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Tetris implementing rotation

I am currently at the last stage of the Tetris Clone using SDL library, the only thing left is rotation. For each piece I have a separate class, and in order to move the pieces down I use a method: ...
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0answers
6 views

make bigger touch space node using spritekit and objective c

I try to make simple game, but I have a problem, node is too small,for smaller iphone phones finger can't move it on ipad it can and on simulator too, so i know its not the code fault. Because I use ...
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1answer
67 views

How can I describe a square in OpenGL ES 2.0?

I need to draw a Tic-Tac-Toe board in Xcode using OpenGL ES 2.0. I am new to graphics programming and can't find good information on drawing a square in opengl es in iOS. I looked at Ray's tutorials, ...
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0answers
30 views

(Spritebuilder) How to add obstacles to endless scroller game?

I'm trying to make obstacles similar to FlappyBird, but I want the openings in the obstacles to be pre-determined by me and not randomly generated. I think having the opening at 5 different spots ...
3
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3answers
291 views

How to set up a game loop for a project targeting iOS?

I'm a fellow game programmer who's done many game engines in Game Maker 8.1, Visual Studio XNA and MonoGame with C#, and one in Java Android with Eclipse. I'm very used to C# and love it plus the VS ...
2
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0answers
91 views

What is Sprite Kit capable of? [closed]

I am messing around with Game Maker in my free time. I learned some Java at school but never really understood the object oriented principles. When I got to know Game Maker I was surprised that game ...
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0answers
11 views

SpriteKit Obj-C – How to add a force on a node a certain distance according to screen size

I have an SKSpriteNode that I'm trying to throw up to a certain point on the screen. I've tried applying an impulse and/or force according to the screen size, but that has strange results. I've also ...
2
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1answer
100 views

Objective-C SpriteKit – How to make a circle of buttons

I have some code in a project already, but I'd like to change it up a bit. Currently, my code creates an empty node called _buttonLayer and then create some buttons to add to it. My buttons start from ...
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0answers
28 views

Drawing shapes within a rectangle area

I am working on a Objective-c project where I need to draw multiple rectangle shapes inside a rectangle area like the attached image. Basically calculating CGPoints inside the CGRect. Thanks in ...
2
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0answers
30 views

Field of vision - Objective-c

Here's where I'm at. Here's where I want to be Here's how it's drawn SKShapeNode *fov = [SKShapeNode node]; UIBezierPath *fovPath = [[UIBezierPath alloc] init]; [fovPath ...
3
votes
1answer
101 views

How to calculate final force vector for the SKSpriteNode

I am creating space game which has an effect similar to black hole's gravitational effect. Wherever the spaceship is going, the black hole will attract it, summing up all the vectors together. I know ...
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vote
1answer
46 views

How to write a custom map canvas and project coordinates on it? [closed]

I am writing a game with Objective C ( xcode ) and I need to use the users location service to mark their position on a map but since I need to create my own map component, I am not able to use the ...
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1answer
112 views

How to resize the child node fit inside SKSpriteNode when resizing?

I am creating a virtual gamepad for my game, It has one main SKSpriteNode with circle image and four child node(up, down, left, right) with image. When I am using default size for all it looks perfect ...
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0answers
118 views

Moving pac-man in maze game using objective c

I am trying to develop maze game using objective-c, I want to allow moving the pac-man using swipe method, the user can swipe his fingers on the iPhone to indicate where he want PAC-MAN to go but I'm ...
1
vote
1answer
40 views

Run some objc code very early in unity iOS game lifetime

I want to hook up a crash reporting service to my unity iOS game. It's just one line of objC to add, as early into the app lifecycle as possible, but I'm not sure how to get it to run. I know I could ...
0
votes
1answer
117 views

Transition from UIView to CCScene in Cocos2D

I've surfed the internet for quite some time but haven't come to find an answer. Any help would be greatly appreciated. I am trying to perform a transition from a UIView to a CCScene So i have a class ...
2
votes
1answer
1k views

Spritekit water flowing [closed]

I'm wondering if there is a way in spritekit to implement water flowing through a path? like this water flow Right now I'm generating the path using UIBezierPath and PaintCode Any suggestion? ...
6
votes
2answers
796 views

Does SpriteKit follow the MVC pattern?

I am currently working on an iOS project called Old Frank that I have been trying to follow a MVC design pattern. The gist of it is. GameObjects(model) <- Scene(controller) -> Sprites "SpriteKit" ...
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3answers
225 views

Finding neighboring coordinates on offset tile map

I have a grid of hexagonal tiles. Every other row is slightly offset for visual reasons. Imagine a player touches any tile - I need to compare the coordinate of that tile, with any tile they touch ...
3
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3answers
613 views

How to approach 360 degree snake without having it “slide”

There's a great question here that helps me a little bit in what I want to do, and it explains it quite well: How To Approach 360 Degree Snake Basically, I want to have a smooth 360-degrees Snake ...
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0answers
30 views

Reverting 2d canvas?

I'm making a multiplayer game which involves drawing lines. It's based this game: http://curvefever.com/sites/default/files/resize/remote/ef86488088c618df13b34f8b87aafd4e-1107x808.jpg. The game is ...
0
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1answer
76 views

memorizing button tap code iOS game

I'm using a single view app in Xcode 6.1 for my game with Storyboards. Not unity or sprite kit. It's a small game not even 3MB. Anyways, I created un-lockable characters with a BOOLEAN. ...
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0answers
227 views

Cocos2d v3 - addChild method make performance problems

i have currently a performance problem with the addChild method in cocos2d version 3.3. My scenario is currently that i have about ten CCNode which holds a bundle of other CCNode (about 500), i called ...
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0answers
39 views

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 ...
2
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1answer
129 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
192 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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1answer
199 views

Understanding CGPoints in SpriteKit

I am planning to place three cards on a view which I add to the background. However I wanted to combine two of the cards and replace the first card position with the new card position. Is there any ...
1
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1answer
427 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 ...
0
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1answer
364 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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0answers
74 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 = ...
-2
votes
1answer
249 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, ...
1
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1answer
378 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
123 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
733 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 ...
1
vote
1answer
1k 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
votes
1answer
390 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
votes
1answer
329 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 ...
1
vote
1answer
1k 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 ...
0
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2answers
73 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 ...
0
votes
1answer
413 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', ...
0
votes
1answer
151 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 ...
-4
votes
1answer
124 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 ...
0
votes
1answer
660 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?
0
votes
1answer
286 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
votes
0answers
38 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 ...
2
votes
2answers
174 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
272 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 ...
1
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1answer
143 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 ...
0
votes
1answer
113 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. ...
0
votes
1answer
557 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 ...