Questions tagged [swift]
Swift is a multi-paradigm, compiled programming language.
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SKNodes in a grid configuration get out of place after falling to fill gaps
I am making a “simple” game where the user will “pop” blocks by tapping on “clusters” of blocks. When the user taps it destroys the “cluster” of blocks, the other blocks move down to fill in the ...
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Grouping "touching" nodes of the same color together
I am trying to make a very simple game that allows the user to tap on any "block" in the scene and "pop" it. If the block is blue and touching another blue block then both blocks ...
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How do I rotate OBJ submeshes relative to themselves (or arbitrary point, as opposed to relative to the whole model)?
I'm creating my own flight simulator game from scratch, using Swift and Metal, for learning purposes, and I'm wondering how I can move certain parts of my aircraft model.
My model is a free OBJ file ...
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INSANE Slowdown when implementing MSAA
I am trying to implement MSAA in my very simple raytracer. However, when I do, my program gets and insane slowdown. I am working in Metal, and on the Metal HUD, I can see that my frametimes drop from ...
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Dynamic bodies falling onto static body tunnel through each other or fail to bounce
I have a problem with Box2D when 2 dynamic bodies fall onto a static body located below when their restitution is non-zero. They tunnel through each other instead of a rigid elastic bounce.
If I treat ...
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How to check multiple rings of tiles around a center tile on a 2D grid
In my game project I create the terrain programmatically by creating tiles on a 2D grid as the player moves around the game map. I have it working where I select the current tile and check all 8 ...
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Quaternions distorting object in Metal
I've been trying to get rotations with quaternions to work for a while now, and I feel I am very close to it actually working but I just can't get it to work.
I do not have a view matrix yet and am ...
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How can I prevent the camera going out of bounds?
I've been working on a Mario Bros clone for the first level, trying to learn how to make games with SpriteKit.
I'm trying to use an ...
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Best way to save screenshots in a game?
I'm making a game, and I'm adding a screenshots feature. Currently I save screenshot files to <Home Directory>/Pictures/MyGame/. However, I'm not sure if ...
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A ball hits the corner slightly, where will it deflect?
I am currently making an iOS Game but I have a small problem. The game is simply a ball which you can control to avoid obstacles and find the food. When the ball hits, e.g. the top or the bottom of an ...
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How can I remove sprites when they are outside viewport, but then add them again if I return to their location to save memory
I'm creating an open-world RPG like Neverwinter nights. But I’m worried about memory and am afraid if I just populate a huge world with physics based sprite nodes, I won't have any memory for anything ...
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Advice on how to organise the levels in a game
I'm thinking of building a 2D platformer game similar to Super Mario Bros, but I'm in the planning process and realised I don't really have a good way of storing information about each level – where ...
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Why does my 3d model become invisible as I move the camera away?
I'm trying to load a 3d model from Mixamo:
// let scene = SCNScene(named: "art.scnassets/ship.scn")!
let scene = SCNScene(named: "art.scnassets/Ch45_nonPBR.dae")!
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Swift get the true date
I have a game and want to reward the user for going on every day. I want to be able to get the true date somehow. I do not want the device date, because the user could just change it and get free ...
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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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Implementing score relative to total game time
How would one create score dependent on total time in game? I would like the score to count by 1000+ each second the game is running for. Later I am going to add some coins which will give my total ...
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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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UnrealEngine4 "backwards compatilibility": Can I view a site that uses Unreal Engine4 on a very old laptop and still see in high definition?
Backwards compatible?
The project:
I want to render a high definition model on my personal website such that it'll be rendered in the highest definition possible on any device, from a 20-year-old ...
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Calculating the difference between two numbers using exponential growth
I think this is a very basic game programming question, but I am bad with math and new to programming & game programming so I'm looking for some advice. I'm making a 2D sprite game for iOS. Every ...
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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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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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Get the up vector of the camera in ARKit
I'm trying to get the four vectors that make up the boundaries of the frustum in ARKit, and the solution I came up with is as follows:
Find the field of view angles of the camera
Then find the ...
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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 ...
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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 ...
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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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How do I apply touches to images, using Swift? [closed]
I need code this game for iOS, using Swift; but I don't know how to apply touches to images, using Swift. My attempts thus far have failed; touch!.view != image.
<...
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How to move sprite as if not rotated when rotated 90 degrees?
We're making a Tetris like game and need help rotating shapes.
Moving the shape works when there is no rotation.
However, after rotation, snapping the shape to the grid fails because the vector ...
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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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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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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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The object can't rotate around z axis in SceneKit
I am doing an app with a functionality like a 3D compass, it can point to the direction where I want. The code is
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Swift gamedev options for linux [closed]
I recently tried out Swift. I found it to be awesome. But I'm unable to find any libraries for game development as I'm on Linux. Everything seems to be made for MacOS & iOS development.
There ...
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Testing for connected maze cells
I'm currently in the middle of writing a game where there is a maze. The maze itself is already drawn ok, and once I have the layout I randomly rotate all the pieces.
I have a 'start' cell that is a ...
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Fatal error: unexpectedly found nil while unwrapping an Optional value [closed]
I am trying to run this code but I keep on getting this error:
fatal error: unexpectedly found nil while unwrapping an Optional value
I don't understand why I'm getting it. Any hint?
...
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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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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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How can I create a "wireframe" texture for a sphere in SceneKit?
I've been struggling to figure this out. I would like to have a sphere in SceneKit that looks like this:
I think the easiest way would be to create a mostly transparent texture with the wireframe ...
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How do I pixelate a scene with SceneKit and Metal, in Swift?
I managed to get pixelation working by using the OpenGLES2 rendering API, and a CIFilter. But it was way too slow, so I want to use the Metal API and just have a very simple filter that pixelates ...
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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:
...
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CPU and RAM usage in OpenGL too high in Swift
My game is set up so the the display controls the game loop, usual in Cocoa. The callback function calls run() which is this. The thing is, the thread running the ...
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Collision Between SKSpriteNode and SKShapeNode
I'm trying to create a collision between two objects. One is a SKSpriteNode and the other is a SKShapeNode. The code I have so ...
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Failed to pass uniform in Metal shader modifier
I'm trying to write a simple shader able to pass the color to be used for drawing in the fragment shader, through a uniform. I load the shader modifier and pass the uniform:
...
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How to add a bump map in scene kit?
I'm trying to draw an Earth, as I've found the textures in this site: http://planetpixelemporium.com/earth.html
I loaded the diffuse, specular and bump maps:
...
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Is it possible to use Metal and SceneKit at the same time?
All the tutorials that I've found online speak about using Metal alone, without any other supporting library. But I don't understand if it's possible to create a SceneKit game and then use a Metal ...
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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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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, ...
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Why is SCNNode.rotation property a four dimensional vector?
I don't understand why SCNNode's rotation property is a SCNVector4 instead of a SCNVector3. The documentation states that:
The four-component rotation vector specifies the direction of the rotation ...
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SceneKit – White layer covering my tube
I have a simple tube node in my scene that isn't displaying properly.
When I rotate it to face the camera, more than half of it is covered by some invisible sheet. When I rotate the tube enough, it ...
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461
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Pathfinding: longest route along tiles of same type
I'm programming a simple tile-based puzzle game, and I've gotten stuck trying to work out a pathfinding algorithm.
Here's how the game is set out:
The game board is (arbitrarily) 8 tiles wide by 8 ...
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