Questions tagged [spritekit]

Sprite Kit is a 2D rendering engine from Apple for iOS and OS X games. It provides rendering and animation for sprites, basic sound playback support and physics simulation.

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1answer
328 views

How to determine the angular velocity needed move an object to a given position

I am trying to move two lines joint to a fixed position sprite in a way similar to that of a pendulum. I would like the lines to swing from end to end each time. The image below shows what I want to ...
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1answer
289 views

calculating the trajectory of an object in SpriteKit when an impulse is applied to it

I want to make a trajectory line of little balls of where the object is going to go after an impulse, sort of like what is in Angry Birds. I did some research and it seems that the physics in ...
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20 views

How to match user drawing with predefined drawing model?

i am trying to develop image recognition iOS app , i will have one reference image , and user has to draw something one screen and when user release finger , then i will convert his drawing into <...
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1answer
525 views

Showing keyboard on SKScene and performing action on a sprite node based on key tapped

I am trying to learn SpriteKit and play with some simple sample apps. Currently I am trying to achieve below things: Show keyboard over SKScene If user taps 'A', perform some action on a sprite ...
2
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1answer
28 views

tvOS game launch image shows on simulator but not on device

I’ve set up a launch image in XCode and it does show up in the simulator, but on the Apple TV it just displays a blurry gray background. The image is the correct size and doesn’t have any transparency....
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30 views

Move SKEmitterNode along with the trail that it creates

In Swift in SpriteKit, I have a SKEmitterNode that I have set up to make trails following the player. I have the target set to self, the scene so that it will make these trails when moved. I would ...
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105 views

Swift Error “unrecognized selector sent to instance 0x7f96875356e0”

This is the function i am trying to spawn obstacles in my game ...
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0answers
17 views

How to calculate falling speed in spritekit?

Is there a way to calculate falling speed based on physics body settings, instead of waiting it to fall and getting velocity? I would like to find what time it takes for object to fall from defined ...
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0answers
24 views

libgdx onto existing IOS and Android App, Feasiblity and App Size

I am an IOS developer, my client has an existing app which they want to add some simple microgames onto. The main requirement is that the app size footprint is as small as possible. I suggested that ...
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1answer
268 views

Simulate wind affecting a boat using a 2D physics engine like Box2D or SpriteKit?

I'm looking for a way to simulate the forces created by wind and how it affects a boat. In a nutshell: if wind hits a boat (sailing yacht), the bow is aligning with the wind and if the wind is strong ...
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1answer
130 views

Use GKEntity's component(ofType:) with inheritance

I'm writing a SpriteKit game in swift and making use of GameplayKit's entity-component system. There are many components that do different stuff but share the same methods in which they do it, so I ...
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1answer
595 views

Hexagonal buttons

I'm trying to create a map of touchable hexagons and the playing area would be like in Catan game. I would like to use Sprite Kit to do the job but is it cabable of doing that? Process goes like ...
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1answer
348 views

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

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 ...
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1answer
384 views

2D Infinite scrolling terrain on two axes

There seems to be a lot of posts about endlessly scrolling backgrounds on one axis, but not much for a 2-axis solution. As Josh Petrie suggested, I'm posting my approach as an answer to see if anyone ...
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2answers
298 views

Where should I save game object's attributes (hp, score) in Swift?

Scenario: I have a game with several game objects on screen. Each can have different score and hitpoints. When I use collision detection for cannonball vs. ship (example) I need to know which ship is ...
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1answer
523 views

Drawing an isometric characters: solutions for aiming

I decided to implement an isometric 2D game for iPhone, using SpriteKit and GameplayKit, and Inkscape/GIMP as graphic tools. I prefer vectorial graphics because as a iOS programmer I am required to ...
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1answer
70 views

Breaking up a map so countries can be colored separately in Spritekit

I'm currently trying to build a little strategy game where players take control of countries on an world. Each player's countries are represented by having a different color background but as each ...
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1answer
398 views

SpriteKit and Swift or Objective-C [closed]

As a newbie to iOS programming, I'm wondering which of these would be more conducive to the type of game I want to program. I've been tasked to program an iOS game for my company. They asked me to do ...
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1answer
132 views

How can I make a sprite slow down to the speed of another sprite while following it?

I'm making a SpriteKit game where two SpriteNodes are in a maze. That maze is represented as a grid. One sprite (A) travels faster than the other (B). Items randomly pop up, and the sprites have to ...
6
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1answer
575 views

Surprisingly, in SpriteKit game engine, “deltaTime” is not frame time?

In Apple's cocos-like 2D enginer, SpriteKit, they have what they call a custom field: ...
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1answer
268 views

Don't know what to do with XML file and Spritesheet (Swift 3)

I'm new to spritesheets and game development in general. I have two files: 1) a .png spritesheet with tons of sprites and 2) a companion XML file with coordinates, anchor points, image names, and ...
4
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1answer
952 views

Swinging a sword in Xcode with Sprite Kit

I'm working on making an RPG in Xcode, and I'm having a major gameplay issue when it comes to having my character swing his sword in a way that is realistic and gameplay compatible. Right now, when ...
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0answers
277 views

One SKSpriteNode with multiple PhysicsBodies?

I am making a game similar to Lunar Lander, when you land with your ship on different objects, etc... The issue I am having is that I have a Player SKSpriteNode (my Ship) with a slightly complex ...
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276 views

Swift Spritekit: Create realistic driving sprite

How would I go by creating a realistic driving experience? I'm using iOS Swift 3 with SpriteKit using the functions applyForce to accelerate when I click the gas button and when braking I add ...
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1answer
234 views

How to adapt a webgl shader using mouse position to have symmetrical behaviour

I'm trying to create a particular kind of effect for the background of my SpriteKit game, and I've found some shaders on shadertoy that are close to what I want, but I'm struggling to adapt them to do ...
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2answers
2k 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. ...
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2answers
319 views

How does a loop work in game engines? [duplicate]

Recently I started working on a game with the spritekit engine. My question is not about spritekit in specific though, but generally about game engines. When I write a loop and run it (eg ...
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1answer
629 views

SpriteKit SKTileMapNode with Tileset Integration

SpriteKit supports tile maps as of iOS 10 and has a pretty powerful engine. Only, I am having trouble discovering if it is possible, and how to natively create, tile sets directly from a tileset image....
3
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1answer
1k views

Can I use physics in Isometric map based games?

I am trying to use physics in my game which is an isometric map based strategy game that the player deals with a city full of buildings, roads and people in it. I am writing the game with Swift and ...
2
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1answer
651 views

How can I create the water-like blur effect in Chameleon Run using SpriteKit and Unity?

As the character in Chameleon Run runs, a water-like blur effect is created. I would really appreciate some guidelines on how I could create this effect in SpriteKit and Unity. Please see the image ...
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1answer
192 views

Making Bigger Touch Space in Node Using SpriteKit And Objective-C

I am trying to make simple game, but I have a problem. The node is too small. On iPhones with smaller screen size, the finger can't move it. On iPad and on simulator, however, the node can be moved ...
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1answer
78 views

Should the Sprites in my Boids implementation be backed by model objects?

This question is about the proper way to architect an implementation of Craig Reynolds Boids algorithm. I have an Agent object like this: ...
3
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1answer
765 views

Sprite orbiting on a point

I was wondering how to make a Sprite do an orbit on a determinated point in SpriteKit. I tried to set the anchorPoint of the Sprite orbiting with the center point ...
4
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2answers
458 views

How to determine contact bodies when multiple bodies overlap and a third makes contact with both at the same time

I understand how the below DidBeginConact function works, but how do you detect which categories make contact when you have multiple colored bars (in the example code) or a friend category and enemy ...
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2answers
499 views

Unity equivalent to cocos2D (and Sprite Kit) Actions?

Does Unity have an equivalent to the Actions feature/functionality of cocos2D and Sprite Kit; if so, what is it? cocos2D Actions: http://python.cocos2d.org/doc/programming_guide/actions.html http://...
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1answer
1k views

Tile based movement with SKAction (Xcode 8, Tile Map)

I am trying to make a game where the Hero can move like in Pokemon with SKActions. But the movement looks unprofessional and have delays. How can we handle to move the Hero smoothly with SKActions ...
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1answer
2k views

How do you set multiple collision rules with Swift and SpriteKit?

So basically I've got 2 types of balls and 2 types of enemies. Green can delete red only, red can hit delete only. Here's what I have for the first collision test: ...
4
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2answers
536 views

Sprite Kit - containsPoint for SKPhysicsBody?

I have a ball bouncing around the screen. I can pick it up and drag it onto a "bucket". When my touches finish, I use the containsPoint function to check and see if I have dropped the ball onto the ...
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1answer
911 views

Isometric scene in SpriteKit

I tried play with spritekit in isometric grid. But i can't understand how to fix level. ...
2
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2answers
395 views

Data model design using Core Data and Spritekit

I have a entity called Item, and every item can have two or three bonuses... What would be a good model design in this situation. I can think of something like: To have many optional attributes ...
2
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0answers
258 views

How could I achieve an iOS high detailed level design for a platformer?

I'm seeing a lot of games that use a predefined and repeating set of tiles for their level (like FlappyBird or the Super Mario game series). I'm a graphics designer so I would like to create levels ...
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1answer
285 views

What is an equivalent of Swift's UIScreen.mainScreen().bounds in Unity 2d?

Basically, I am from a Swift SpriteKit background where UIScreen.mainScreen().bounds is a CGRect which represents the screen and can be manipulated in various ways ...
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1answer
164 views

2D Soccer Goal Net

I want to make a 2D soccer game on iOS, I started with SpriteKit and got the ball physics working. Now, I could make the goal simple and static, but I'd love to make it make it elastic like a real ...
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1answer
466 views

Fix buttons on screen

I've added buttons and SKCameraNode for my player. I got problem. When player moving left/right/jump all buttons dont follow for him. UPDATE class GameScene: SKScene, SKPhysicsContactDelegate { <...
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1answer
103 views

How can I increase the hit range of a node?

How can I set the radius or the hit range of a node initialized with a texture? Of course I can do that with increasing the size of it, but actually I want to do this without resizing the picture ...
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0answers
202 views

How do I simulate vehicle movement in a non-gravity environment (e.g., space)?

As a series of small experiments, I've began to tinker with game development, specifically using SpriteKit and Swift. I'm looking to simulate a body moving through a non-gravity environment, ...
1
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1answer
181 views

How to reregister gamecontroller changedvalue handler upon game scene reload

I'm working on a tvOS game that uses the siri gamepad controller. Everything works fine the first time out. If the user loses the round I reload the same scene using presentScene. After reloading the ...
2
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1answer
981 views

Collisions between sprites in SpriteKit

I'm making a game in XCode using SpriteKit. The game has a player and different types of projectiles that he has to avoid. When the player collides with the projectiles, the score changes and the ...
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1answer
622 views

How to choose a SKSpriteNode randomly?

I want to choose from 4 enemies using random and present it on scene. For that purpose I've made this: ...
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0answers
441 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 ...