# All Questions

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### How to support Surface pens in Unity?

Our game works great with touch or mouse, but the Surface pen doesn't seem to register as a pointing device at all. How can we support the pen in Unity in a native build? This question on the Unity ...
1k views

### SSAO and normal issues

I'm using a SSAO alghorithm called "SAO", seen here: http://graphics.cs.williams.edu/papers/SAOHPG12/ I'm currently having issues with "smooth" normals, for example when using normal/height maps. To ...
1k views

### How can I use the Kinect as a microphone in Linux?

I am using Ubuntu 14.04 LTS, and the Kinect camera has type Microsoft_Xbox_NUI_Sensor_043367545147-02-Sensor. I can access the Kinect's camera from a Linux program ...
491 views

### Oculus Rift on Motion Simulator Platform

I currently develop a VR environment for an existing (physically) large motion simulator platform. The user can sit on this motion platform and gets accelerated and tilted to induce the feeling of ...
326 views

### Spherical Area Lights do not match reference

So I'm adding spherical area lights to my application, and comparing my results with mitsuba, I am getting some differences (left is my approach, right is mitsuba - a pathtraced reference): What I am ...
861 views

### Ledge climb animation and movement (2d platformer)

Struggling to make a decision on the implementation of a ledge climb mechanic for a physics driven 2d platformer. What is the best way to go about this without it getting overly complex? So far I ...
997 views

### How do i find the circumsphere of a tetrahedron?

I'm looking for the most minimized equation to find the center coordinates and the radius of a tetrahedron circumsphere given four 3D points. What I found on the internet mainly deal with the circum ...
636 views

### How to hide a post-processed mesh outline when/where the mesh is hidden

I'm working on setting up an active outline in my 3d engine, a highlight effect for selected 3d characters or scenery in the screen. After working with the stencil buffer and getting some ...
3k views

### Preventing a Combination of Rigidbody Jump Force & Bounce Magnitude in Unity3D

I'm building a fairly simple marble racing game in Unity3D. The ball is a 3D physics object that moves only on the X and Y axes. It has the ability to roll left and right, and to jump. Pretty basic ...
983 views

### How to save the Mesh from an Interactive Cloth at runtime in Unity?

At the start of a scene I have GameObject called 'sheet' positioned above a 'ball' GameObject. The sheet has an Interactive Cloth component on it and a Cloth Renderer. The Mesh for the Interactive ...
472 views

### UDK: Checking actor type in projectile ProcessTouch

So, to be brief, I'm trying to teleport a pawn when it's struck by a projectile (or damaged by any weapon in my game.) Right now, I'm trying to just call Pawn.SetLocation in the projectile's ...
1k views

### How do I reconstruct depth in deferred rendering using an orthographic projection?

I've been trying to get my world space position of my pixel but I'm missing something. I'm using a orthographic view for a 2.5d game. My depth is linear and this is my code. ...
580 views

### How can I compensate for camera rotation changing PCSS penumbras?

I am implementing PCSS and I am using a directional light. The directional light volume is clamped to the camera frustum (as is typical with directional lights). So when the camera rotates, the ...
1k views

### Why can't I read .ttf file when running Android configuration?

When running or debugging my game on Android device, I get this error in the logcat: com.badlogic.gdx.utils.GdxRuntimeException: Error reading file: data/fonts/myFont.ttf (Internal) Which is ...
189 views

### How to have multiple GameObjects sharing pieces of same material?

My question is: There's any way of having GameObjects sharing pieces of same Material, not a clone, but an extension of one? For example, in these case nine game objects sharing just the same material ...
90 views

### Is there an algorithm to move vertices along a planar mesh to give an area more vertex without destroying the shape too much?

Currently, I am playing around with a terrain technique called Vector-Field terrain as created and used for the game Halo Wars. I have successfully recreated the technique. However, I'm having ...
65 views

### How to clip cut-off using different frustrum than that of original camera? How to cut plane by pyramid shape?

SOURCE : http://amd-dev.wpengine.netdna-cdn.com/wordpress/media/2012/10/Mitchell_LightShafts.pdf This process is part of creating light draft effect. And I am suggested to do the described process in ...
122 views

### Why Can't I duck reverb on the mix bus in Unity?

i'm surprised there is so little documentation on this issue. But i'm trying to duck the audio on all the mix buses in Unity so that you can clearly hear the VO of the game. Now it works great except ...
368 views

### Implementing a SceneManager using OpenFL

I'm trying to implement a basic SceneManager using OpenFL and Haxe. I don't have a lot of experience using OpenFL and Haxe so I have a few problems. Here is how I designed the SceneManager class: <...
1k views

### Why the AnchorPoint doesn't affect the CCLayer Positioning?

I think there is a difference between the CCLayer and CCNode behavior when I change their AnchorPoint. I will describe what I mean and please somebody explain it. Scenario: I start with ...
410 views

### Do SpriteBuilder's Smart Sprite Sheet need to be loaded to memory?

When I create an Smart Sprite Sheet Folder using SpriteBuilder and publish it, must I load that SpriteSheet into memory "FrameCache" with code or does SpriteBuilder do this automatically (so I just ...
927 views

### Using PhysX, how can I predict where I will need to generate procedural terrain collision shapes?

In this situation, I have terrain height values I generate procedurally. For rendering, I use the camera's position to generate an appropriate sized height map. For collision, however, I need to have ...
2k views

### Creating a curved mesh on inside of sphere based on texture image coordinates

In Blender, I have created a sphere with a panoramic texture on the inside. I have also manually created a plane mesh (curved to match the size of the sphere) that sits on the inside wall where I can ...
90 views

### User-friendly scripting when using an ECS?

I am currently creating a small hobby project to get back into game development, and I have decided to structure my entities using an ECS (Entity Component System). This implementation of an ECS is ...
124 views

### How to move a portion of bezier/spline curve along its complete bezier/spline curve?

Based on the image below, I have a curve (orange) which is a bezier sub-curve of an original curve (longer black curve). The original curve consists of a number of cubic bezier curves joined together. ...
135 views

### How to create an illustrator/photoshop-like pentool for creating bezier curves in Unity

I found a very useful bezier curve creation code here, which I am using. I need to create complex segmented bezier curves so I want update the code to create illustrator/photoshop-like pen tool bezier ...
508 views

### How to create skeletal animation data for a skirt?

Please think of this in an engine-agnostic way first, and then we can talk about specific engines. In my game, I have a 3D character which is wearing a hakama (think of it as a long pleated skirt). ...
305 views

### Environment mapping without cubemap (need coordinates projection)

I'm working on a project with C++ and glsl (4.1). I have implemented a mirror object which is a plane at height 0 that works as follow: I render the scene with a MVP computed such that the camera ...
507 views

### How to link assimp lib to universal app

I cannot make assimp object loader work with universal app, and I got the same problem as this one: Assimp and directX12 universal apps I tried the static library approach mentioned in the answer of ...
277 views

### How to draw Shadow Volumes in one draw call?

I've got a simple app that draws 3D cubes using instance rendering and I'm implementing Shadow Volume. Each cube's vertex, uv, normal and index data are statically stored in 4 vertex array buffers. On ...
381 views

### Why isn't my cbuffer updating?

I am really frustrated because my cbufer isn't updating. This is my VS: ...
2k views

### NegaScout with Zobrist Transposition Tables in Chess

I'm trying to put Transposition tables into my alpha beta scout. I do see an incremental speed boost I think toward mid or late game, however, even with a table size of 1-2GB, its may or may not be ...
3k views

### Matrix rotation wrong orientation LibGDX

I'm having a problem with matrix rotation in libgdx. I rotate it using the method matrix.rotate(Vector3 axis, float angle) but the rotation happens in the model orientation and I need it happens in ...
634 views

### Understanding how texCUBE works and writing cubemaps properly into a cube rendertarget

My goal is to create accurate reflections, sampled from a dynamic cubemap, for specific 3d objects (mostly lights) in XNA 4.0. To sample the cubemap I compute the 3d reflection vector in a classic ...
179 views

### How to use a mask texture with Kobold2D

I am an iOS developer but I'm new to cocos2d. I'm working on new game, I use Kobold2D, have cocos2d installed too, and I want to make this effect: I know how is done with Flash, but can't make it ...
4k views

### Can I use two Collision Boxes on the same GameObject?

I have two Collision Boxes on the same GameObject. I don't want the Collision Boxes to be triggers. I want the Collision Boxes on the actual GameObject, not its children. For example, if I want to ...
233 views

### How can I Implement spin in billiard game?

I'm not sure that you played billiard or snooker before.if you played you should know about spin. but anyway if you don't know about it you can see it in this video I want to Implement spin like this ...
65 views

### How can I make sure my OpenCL code works correctly on different graphic cards?

I'm testing on adding some OpenCL code in my game, but I only have a single Nvidia card & I'm not sure the code will run normally on other platforms. Is there any way to make sure my code runs ...
257 views

### Adding functionality to make individual anchor points of bezier continuous or non-continuous

I am creating bezier curves with the following code. The curves can be extended to join several bezier curves by shift clicking in the scene view. My code has functionality for making the whole curve ...
530 views

### Instantiating prefabs by dragging in scene not working

So I have this problem where I try to instantiate prefabs as in this video for example. I can take instantiate one prefab to the scene, but if I try to instantiate a second one to the scene (whether ...
99 views

### How many Pipelines in a Typical Rendered Scene DirectX12

I'm learning DirectX12 right now and I'm missing a few pieces of the puzzle in my own head on the overall structure of how you would setup a game. Specifically, I'm trying to get an idea of how ...
341 views

### How to rotate a parent object while rotating a child object to a certain angle using coroutines

I have a semicircle like game object which I made by putting two arcs in an empty game object (SCircle) and rotating the 15° (for left arc) and -15° (for right arc) as seen below. ...
224 views

### Unity : Orthographic Camera is not Occlusion Culling?

In the scene where the occlusion culling is done as desired, When I change the camera to orthograhpic, occlusion culling is not done. (Look at the sphere the red arrow points to on the right) What ...
269 views

### How to force play area corners to Lighthouses in Unity

I'm working for a guy that wants to recreate real environments in VR and superpose them for business demos. Think of one of those mall kiosks where you "enter virtual reality" and at first it looks ...
724 views

### Snake movement in monogame

Noobie here... I've started learning monogame development and currently working on a simple snake game. I'm having trouble with the snake's movement, I figured I could make it tile-based movement but ...
795 views

### Libgdx how to draw name above monsters head

As you see, the player hud works perfect, but when i move the monster name moves with me. Instead to get attached to the monster. http://3.1m.yt/Jq-JVZQ.png Player has a hud and i'm using Scene2D.ui ...
454 views

### Gun Rotation Unity

https://www.youtube.com/watch?v=m-J5sCRipA0 - this tutorial by brackeys shows how rotate your 2d gun using your mouse. How can I edit this script to add an auto rotating system. Where the gun keeps ...
5k views

### Handling movement on sloped surfaces - clamping character to sloped surface

I've noticed that a lot of people seem to have this issue but I've yet to find an actual working solution - when a rigidbody-based character controller (I'm not using Unity's character controller) ...