Refers to games or art assets built in a three-dimensional space, where all positions have X, Y and Z coordinates.

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2
votes
2answers
5k views

Rotate sphere in Javascript / three.js while moving along x/z plane

I have a sphere/ball in three.js which I want to "roll" around on the x/z plane. For the z axis I could simply do this no matter what the current x and y rotation is: sphere.roll_z = ...
3
votes
2answers
676 views

Triangle Line-Segment Intersection - detecting near misses

A ray is a very poor approximation of a player! I think approximating a player with a sphere traveling a straight line each game tick will solve my problems of the player intersecting edges of ...
4
votes
3answers
3k views

List of 3D libraries based on WebGL [closed]

Is there a up-to-date list of WebGL libraries or articals with comparison? Until now I heard only three.js and GLGE.
4
votes
1answer
329 views

Techniques for displaying vehicle damage

I wonder how I can displaying vehicle damage. I am talking about a good way to show damage on screen. Which kind of models are common in games and what are the benefits of them? What is state of the ...
2
votes
1answer
368 views

Does XNA 4 support 3D affine transformations for 2D images?

Looooong story short I'm essentially trying to code Mode 7 in XNA. Before I continue bashing my brains out in research and various failed matrix math equations; I just want to make sure that XNA ...
0
votes
2answers
351 views

AS3 Stage3D Mouse click problem?

I have a problem with Mouse interaction and Stage3D. The only way I found to register to listen to mouse clicks and interact with Stage3D, is to add a mouse eventListener directly to the .stage. ...
3
votes
1answer
266 views

How can I generate a 3d model via a series of transforms?

Is it possible to generate 3D models using some sort of object transformation (like it's shown here), using PovRay or any other tool, and import them into Blender / Unity? For example starting with a ...
7
votes
3answers
437 views

Why doesn't light continuous on my model?

I created a basic textured cube model with Blender to practice modeling, and then I imported it into Unity. After I put up some lighting it looks pretty ugly. The light is not continuous on a row of ...
1
vote
1answer
273 views

Viewport.Unproject - Checking if a model intersects a large sprite

Let's say I have a sprite, drawn like this: spriteBatch.Draw(levelCannons[i].texture, levelCannons[i].position, null, alpha, levelCannons[i].rotation, Vector2.Zero, scale, SpriteEffects.None, 0); ...
0
votes
2answers
527 views

2D animations frames vs 3D animation for small indie project: timing considerations

pretty lame question but was wondering.. I am developing a 2D game using Cocos2D for iOS. The art work till now is all 2D (is a shooter game) but some of the characters would benefit of complex ...
10
votes
6answers
21k views

Visual Studio 2012 and Game Development [closed]

Alright, I think it's a simple question, but I got difficulties to find some answers around. I already read that XNA wouldn't be in Visual Studio 2012. I recently learned to use XNA, but since I ...
3
votes
2answers
421 views

Rotating voxels in 3d space amongst the x axis

I have a very simple voxel engine and so far it works based on coordinates, e.g. x, y, z. I was wondering if there is a formula for rotating groups of voxels/coordinates from the x axis(e.g. [0, 1, ...
8
votes
2answers
368 views

Render 3d object to 2d surface (embedded system)

i am working on an embedded system of a sort, and in some free time i would like to test its drawing capabilities. System in question is ARM Cortex M3 microcontroller attached to EasyMX Stellaris ...
-1
votes
1answer
1k views

Asset missing problem XNA

I'm using VS2010 with XNA 4.0 and I'm trying to load an FBX model with texture on the screen. The problem I'm having is this error: Missing Asset: C:\Users\ChocoMan\Documents\Visual Studio ...
1
vote
0answers
48 views

How i can sign and/or group a specific set of vertices in a 3D file container like OBJ ? - in Blender

I would like to export a 3D model with each part having a name or a label if you will. For example i would like to export a model of an human body and name each part in specifics vertex groups like: ...
3
votes
2answers
394 views

How to reconcile depth ordering with minimal shader context changes?

We generally want to minimise shader-program switches (glUseProgram and all associated context changes) for the sake of performance. AFAIK it is not uncommon to render by shader program, i.e. group ...
10
votes
1answer
3k views

GLSL, all in one or many shader programs?

I am doing some 3D demos using OpenGL and I noticed that GLSL is somewhat "limited" (or is it just me?). Anyway I have many different types of materials. Some materials have ambient and diffuse color, ...
4
votes
2answers
6k views

Where to attach global scripts in Unity?

As far as Iknow in Unity, every script must be attached to an object. But what is the case with global scripts? For example in a tetris-like game to which object should I attach the element spawner ...
0
votes
1answer
1k views

Fast Updating of Large Amounts of OpenGL data

I'm seeking advice, suggestions, and ideas on how to handle the updating of large amounts of data in OpenGL and c++. My partner and I have gone through two methods. The first is vertex by vertex ...
1
vote
1answer
3k views

Should I use XNA or Unity to build a video game? [closed]

My friend and I are planning to make a video game (like Slender) where the character is stuck in a building, when lightning strikes, and the lights go out and your objective is to find the back-up ...
1
vote
1answer
424 views

Why do my pyramids fade black and then back to colour again [closed]

I have the following vertecies and norms GLfloat verts[36] = { -0.5, 0, 0.5, 0, 0, -0.5, 0.5, 0, 0.5, 0, 0, -0.5, 0.5, 0, 0.5, 0, 1, 0, -0.5, 0, 0.5, 0, 0, -0.5, 0, 1, 0, 0.5, 0, 0.5, -0.5, 0, ...
1
vote
1answer
374 views

Highlight edge on 3d cube in directx

I want to make a 3d editor in DX9/XNA for a project I'm working on. I'm just thinking through how I would go about certain tasks and I'm stuck on one particular thing, which is crucial to making the ...
0
votes
1answer
1k views

Calculate the angle between two 3d vectors: Function always returns 89.1-89.9

I have my own 2d game and I am attempting to calculate the angle between 2 GameObjects. My Problem: My function that is meant to calculate the angle(direction) between 2 Vector3's doesn't appear to ...
5
votes
2answers
1k views

How to render metaballs?

How to render metaballs? I am a Python programmer familiar with the Panda3d and Blender3d APIs. My math kinda sucks, but I know enough to write game logic code and procedural model generation code, ...
1
vote
0answers
507 views

Microsoft XNA code sample wont work with blender model [closed]

I downloaded this code sample and integrated it into my game http://xbox.create.msdn.com/en-US/education/catalog/sample/mesh_instancing It works with the model that they supplied, but throws and ...
1
vote
0answers
199 views

BSPs, Octrees and modern graphics hardware [closed]

I have read a lot of literature on BSPs, Octrees and like. Problem is that it is all old literature from software rendering time. Nobody describes how it is implemented today. So here is my idea how ...
0
votes
1answer
1k views

How can I implement 3D textures using webgl?

I went through the google I/O video but did not get exactly how to do it. If somebody could point me to a simple 3D texture implementation using webgl, it would be helpful. i basically have a volume, ...
2
votes
1answer
2k views

global transform to local transform?

If an object is attached to another one and you need to set its position, rotation and scale in global space, what do you do to get the local versions of these values, knowing the same values for the ...
-1
votes
1answer
605 views

How do I perform collision tests between two 3D oriented bounding boxes?

I want to test two 3D oriented bounding box objects against each other and stop them if there is a hit detected. How can I accomplish this using only the collision detection functions in the Bullet ...
5
votes
1answer
1k views

VBO and gl*Pointer management practises?

I'm aware it's not a simple yes/no question and for the moment I can't tell if it can be simply answered, or is it a topic for a long discussion which is not suitable for our Q&A format. I want ...
-4
votes
1answer
3k views

How to make NPC AI for my jme3 ninja game

My scene has a main character who is a ninja and an enemy which is a goblin and one monster but the monster has no animation so we can wait with him: How can I make the goblin actually move instead ...
5
votes
1answer
19k views

How to merge two objects in Blender

What I've Done I created a Cube object with Subdivision Surface modifier in order to model a spehere. I created a cuboid object looking like a angled, longish baton. What I Want to Do I want to ...
-2
votes
1answer
376 views

Which models and scene to use for a dungeon game?

I use jme3 with some builtin models and scenes and I've managed to put together a third person 3D scene. I now want to program some attack and/or fights and I think that skeleton warriors and/or ...
3
votes
3answers
1k views

Textureing subdivided Icosahedron in XNA, seam problem

*Look below for the updated source code* I have started to to make some different types of objects and create them by code in XNA. Right now I have finished the code for creating a Icosahedron. And ...
1
vote
1answer
376 views

Engine and level of detail for maze / labyrinth / dungeon scene?

My question is similar to these: Algorithm for generating a 2d maze To scene graph or not to scene graph? I.e. in this case should I use jme3 or some other engine (I heard unreal offers a free ...
26
votes
5answers
9k views

How to generate caves that resemble those of Minecraft?

I've been working on a 3D procedural world for a while now and am wanting to start adding cave systems. I'm currently using 2D/3D Perlin Noise for the terrain generation in combination with Marching ...
0
votes
1answer
179 views

Using bone joints

I am trying to save bone joints to a file, and am using this format. I was wondering if anyone could clear up a few questions I have why do I need to provide rotation data for the bone, if I already ...
2
votes
1answer
183 views

Overlapping vertices on sphere?

Iv started up doing some programming in XNA as Iv been doing C# for several years and would like to start do some 3D work with C# and XNA framework. Right now Im trying to build a sphere by code. It ...
0
votes
1answer
333 views

3d world vertex translation to go to 2d screen coords

My technical english is a little rusty so to avoid misunderstands please be patient with me :) I will try to be brief and clear Situation: - I have a 2d sprite character on the screen - I've just ...
2
votes
2answers
414 views

Ray Picking: how can I find which copy of model to pick, if they share the same vertices, but each one is translated before being drawn?

I have a scene, in which I am drawing few different objects - each one has the same vertices and each one is translated to proper place before being drawn. While using libgdx (but I think that this ...
5
votes
1answer
431 views

apply non-hierarchial transforms to hierarchial skeleton?

I use Blender3D, but the answer might not API-exclusive. I have some matrices I need to assign to PoseBones. The resulting pose looks fine when there is no bone hierarchy (parenting) and messed up ...
6
votes
2answers
1k views

How to remove floating terrain when generated with 3D Perlin Noise?

I'm currently using 3D Perlin Noise to generate random terrain in combination with Marching Cubes. My issue seems to lie in scaling the noise function to get reasonable heights in my terrain. If ...
0
votes
2answers
551 views

Screen coordinates to a multilevel isometric world

I have an isometric world that has stuff on multiple levels, i.e. it has an XYZ coordinate system, and tiles can be stacked on each other, accumulating screen Y offset as they go. I currently have an ...
4
votes
3answers
1k views

How does 3D games work so fluent provided that each mesh's size is so big?

I'm surprised to find that each mesh takes at least 5-6 MB, how can a 3D game be so fluent when there are hundreds of models? I'm expecting it will simply go out of memory or something else that ...
3
votes
1answer
1k views

What does multisampling skip or improve? (so it can be faster than supersampling)

I never really fully understood this, or found an article which explained all the steps in a friendly way. I'll start with what I do know already (which I hope do not contain misconceptions). I'm ...
0
votes
3answers
2k views

collision resolve sphere-aabb and aabb-aabb [closed]

I am currently working on a basic physics engine which does not consider rotations. At the moment I work on collision resolving between aabbs and spheres. Unfortunately I have no idea what a collision ...
4
votes
1answer
916 views

Creating a highlight halo around a selected object

I'm looking to create a halo highlight around the selected objects in my game screen. The main platform is android, but I am writing an iOS version as well, updating it whenever I successfully add the ...
0
votes
1answer
179 views

How do I import Motionbuilder animation into my game?

I have an animation sequence for a 3D model built in Autodesk Motionbuilder. How would import the data for the sequence into my java game for my model? Is there any tutorial on how to accomplish this? ...
4
votes
1answer
1k views

Efficient physics and collision detection for RTS

I'm thinking about writing my own RTS game and while I'm more or less clear about how the game engine should work, I need some directions as to how to implement physics and collision detection. Now, ...
1
vote
1answer
464 views

UVW Unwrap multiple quads on same texture space automatically

I've been looking around the web for the answer to this question, but to no avail. So here I go. I'm looking for a way to automatically map several quads on the same texture space (for example (0,0) ...