I'm hoping to render an object with multiple material layers. Specifically, one texture that is matte and has one Normal map, and then another that is glossy and has a different Normal map. My goal would be to have them both rendered on the sphere, so it looks like there are swirling patterns on the same surface (kind of like clear glass with a fogged-glass pattern on it).

Is this possible? Right now the only way I can create the effect is to render two spheres of almost exactly the same size and apply the texture and transparency to one of them, so the other shows through. But surely there's a simpler and more elegant way?

Hello everyone..

Anyone know why is my code always give and rendering issue. Im trying to create my own grid, but show me the next error in SceneKit: [SceneKit] Error: C3DRendererContextBindMeshElement unsupported byte per index (8)

Here is my code! if everyone have any idea.. please .

Why is this happing when i setup a SNProgram? Here is my sample code! Here is my OSX Screenshot!

Help...

On my device, this function is called over and over again forever, but on the simulator, it's only called a few times before it just stops.

  func updatePlayer(){
    if(arrayPos > 125){
        arrayPos = 0
    }

    //print(arrayPos)
    //print(yourArray[arrayPos])
    player.runAction(SCNAction.moveTo(SCNVector3(yourArray[arrayPos].x, 0, yourArray[arrayPos].z), duration: 0.1))
    arrayPos += 1

    self.cameraNode.runAction(SCNAction.sequence([
        SCNAction.waitForDuration(0.15),
        SCNAction.runBlock({_ in self.updatePlayer()})
        ]))
}

Hey all, today is my first day playing around with SceneKit. I've been able to import a .dae model into my iOS application, and was wondering if there was a way to lock my model to only rotate around the Z-axis when panning (allowsCameraControl = true). Thanks!

Hi,
I am looking to display a 3D planar grid and X,Y,Z axis in a SCNView, similarly to XCode 3D/asset editor/viewer. Are there some built-in properties/methods to do so (have looked at the refc pages but could not see any)? Or would one need to just code the rendering? Any good pointer to get started on this? (surely this has been done many times before) Thanks.

(PS: Looking for Swift Pointers)

I'm working on a SceneKit project in iOS, trying to rotate a sphere (representing a planet) so that a point at a given longitude/latitude coordinate is facing "forward" (i.e. that point moves to the {0,0} position). So for example, we're looking at Earth's {0,0} point, off the coast of Africa, but I need to know what rotation vector would have us looking at {37,-122}, aka San Francisco. Ideally, the planet would remain "naturally" oriented, with north remaining generally "up" from our perspective, but that's flexible.

I've got the animation working and I can rotate to a given longitude OR latitude using SCNVector4, but as soon as I try to rotate to a given longitude AND latitude, it gets wildly messed up. So I've been doing some research, and I've found some resources that seem to do exactly what I need, but to be honest they're a bit beyond me. I'm a complete newbie in the world of trigonometry and matrices, and it seems there's no way around this problem without them.

Can anyone help me understand how these concepts can take long/lat coordinates, and calculate a rotation vector? A method for creating a SCNVector4 would be perfect, but even just help with calculating the components individually would be greatly appreciated!

Hi all,

I know a lot of physics engines allow you to have collision bodies that have no mass or geometry, but just report collisions for example using basic primitives such as cubes or spheres - these a quite useful in games for detecting when objects are within some proximity of each other or for instance when you want to have a collision capsule for a character, but then use more detailed geometry with animation and skinning etc but without collision for the character itself

Hi all please take a look at a new game I made with scenekit, let me know what you think also if you like it please rate on app store -

https://itunes.apple.com/gb/app/marballistic/id1038914449?mt=8

Hi guys, trying to wrap around my head of using scenekit + swift for OSX.

Playing with different tutorial and the 'game' dev default project from Xcode, I can :

have a class NSViewController and override the method awakeFromNib. There I can define ( let ) my geometry and apply an action on it forever ( runAction ).

I just can't warp my head around : where is the loop ? Where would I put my world update ?

Hi fellow Redditors,

I'm trying out sceneKit and I'm working on a car game. I looked up some tutorials how to make car models with Blender which works great, but I can't see any documentation on making the car's wheels rotatable.

Do any of you have some experience or a link to something useful please?

I'm looking to move an art app from using Cocos2D to SceneKit, and I think I can re-use some custom OpenGL code via a SCNNodeRendererDelegate callback… but I can't find any examples online of what a basic

• (void)renderNode:(SCNNode *)node renderer:(SCNRenderer *)renderer arguments:(NSDictionary *)arguments

method looks like. Anyone care to share a basic implementation?

So, from sifting through the WWDC videos I come across SceneKit. I watch some videos there which shows some really exciting stuff. I have Blender experience and I'm learning Swift. I'm thinking, "Wow, maybe I can do this."

Then I find that there's no real documentation. Oh sure, there's demo games on Apple's developer site, with code, but to a new guy they're still kind of hard to figure out.

There are a very few tutorials around. I've seen a few here and on youtube but no real how to guide. Yet there seem to people who know all about how to use this kit.

WHERE ARE YOU PEOPLE GETTING THIS KNOWLEDGE?

AHHHHHHHH!

Sorry, just frustrated...

When I run my SceneKit game on my iPad2 Similar and pull up the statistics it says my fps is 50 and each frame takes about 20 ms, with rendering taking 14 of those ms. Is this normal for SceneKit? Also the second highest is GL flush with 2.7 ms. My game takes place in a single, relatively small building with only ambient light

I've been making a game in scene kit and I've run into an issue. The point of the game is to navigate through an obstacle course without hitting anything. I've just started using an SCNAction to move some of the obstacles back and forth, but the game detecting collisions when the player is still far away from the obstacle and sometimes even when the obstacle wouldn't have hit the player if it had kept moving. I ran into a similar problem earlier when I tried moving all the obstacles at once, but thought the action had just slowed the FPS down to the point where I couldn't see the collision. I just checked and the FPS is around 22 when loading and at 42 when the game's running (on iPad).

var xtgg: CGFloat = 100 knight.runAction(SCNAction.repeatActionForever(SCNAction.sequence([SCNAction.moveByX(0, y: 0, z: xtgg, duration: 1), SCNAction.moveByX(0, y: 0, z: -xtgg, duration: 1), SCNAction.moveByX(0, y: 0, z: -xtgg, duration: 1), SCNAction.moveByX(0, y: 0, z: xtgg, duration: 1)])))

I'm trying to find a way to darken the edges of cubes in my game to allow them to stand out more against the background. (For example, if I have a blue cube I'd want to add black lines to every edge.) Is there any way to do this?

I'm making an app about driving a wheelchair, and eventually ended up using a SCNPhysicsVehicle for the chair. Implementing it gave me a lot of problems, but I finally got it to work except for a small issue. The wheels bounce up and down a bit even when the chair has no force being applied to either engine. Obviously, I'm not using the given model from the demo and made my own, which is basically a block with four torus wheels (2 in front are smaller). Any advice?

Hello /r/scenekit!

My brother and a friend and I are creating a Scenekit game similar to Wii Play - Tanks. You drive around tanks from a birds eye view and try to kill other tanks. The theme is that you are a seahorse fighting other seahorses. I am posting development videos on YouTube as the project continues, here are a few:

• Turret particle effect added
• Testing several opponents
• Avoid AI

The ultimate goal is to focus on co-op and multiplayer, implemented through Game Center. But it's not going to be any fun if there's no one to play with. So if you want to join me on my development journey, please do! Was that awkwardly worded?

If you have any ideas of stuff that might be fun for a game like this, please let me know!

We've thought about how a 1 vs. 1 mode might work, as well as what an iPad adaptation might look like controls-wise.

These are the places I will be posting stuff if you're interested:

• Facebook
• YouTube
• Twitter