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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5
votes
2answers
495 views

How do I apply A* to a complex and dynamic 3D environment?

I've looked a bit at Breadth-First and Depth-First search algorithms and I think I've got a pretty good idea of how they work. Now I am here : http://www.policyalmanac.org/games/aStarTutorial.htm ...
0
votes
1answer
405 views

Unity3d wheelcollider falling through terrain

I have created simple project with 3D car and terrain. I have added 4 Wheel Colliders on model wheels. But when I run project wheels falling through terrain. Before run: After run: I am sure that ...
0
votes
1answer
69 views

A* pathfinding in 3D

I've looked through some A* pathfinding algorithm examples, but as far as i know they work with grids e.q -> http://qiao.github.io/PathFinding.js/visual/ But how can I use this algorithm in my 3D ...
0
votes
2answers
114 views

How to set player rotation to direction the player is moving?

I'm having an issue with my click to move mechanic. I want the player to move to a specific position in the game when the mouse is clicked (and it does just that) but the issue I'm having is that the ...
0
votes
0answers
30 views

Calculate future 3D Position of object(Unit)?

I've looked around and almost all examples is see have a velocity vector which I do not have, or at this point am unable to figure out. Im trying to find the 3D position where i can launch a trap in ...
1
vote
2answers
512 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 ...
0
votes
0answers
32 views

Stuck on a steering problem

i'm building a car game, and currently working on the steering. i would like to change the motion of Z rotation so that the car rotates around the Z axis when the wheels are turned. I can't set the ...
1
vote
1answer
93 views

Get quaternion between two objects on sphere

In a planetary gravity environment objects are represented in the following way: struct object { struct quaternion quat; // quaternion to represent the rotation between the object and the center ...
4
votes
1answer
1k views

Is a game like Subway Surfers suited for 2D or 3D?

I imaginated a mobile game and now I'm getting doubts as to whether its possible for my idea to be developed in 2D. Here's a crude illustration of the game scene: It's pretty much like Subway ...
2
votes
2answers
106 views

3D models on 2D background perspective mismatch

we are working on a tactics game, with a hand drawn 2D backgrounds and 3D models moving on them. The game generates a 2D grid placed on a XY plane, with faux isometric tiles (Diamond Grid). I have ...
0
votes
0answers
16 views

What map projection is needed to transform a shapefile into a 3D earth?

I'm looking for a way to create a 3D earth in Flash, something like the wonderful SolarSystemScope, only in my map the countries should be clickable and whatnot. To get started I've got map data from ...
0
votes
0answers
18 views

DirectX11 Maya Like Insertion

I'm currently trying to building a game editor and wish to have a way to insert models by clicking on the view space. I would like this system to act much like how Maya inserts polygon models (default ...
3
votes
2answers
758 views

How can a load and play an .x model using vertex animation in XNA?

From a game I developed years ago, I still have character models that my former 3D engine designer created and that I'd like to reuse in a Windows Phone project now. However, the files are in DirectX ...
13
votes
4answers
11k views

How to load 3D models into Java?

Using LWJGL what is the easiest way to load a 3D model to be drawn on screen? I know LWJGL doesn't have built in loading support so I am looking for a small library that would help to load ...
1
vote
1answer
165 views

Mapping a 3D texture to a standard hollow-hull 3D model

I have 3D models which are typical hollow hulls. If such a model also had a 3D volumetric/voxel texture map then given a point P inside such a model, I'd like to be able to find its uvw coordinates ...
13
votes
5answers
3k views

Generated 3d tree meshes

I did not find a question on these lines yet, correct me if I'm wrong. Trees (and fauna in general) are common in games. Due to their nature, they are a good candidate for procedural generation. ...
2
votes
2answers
103 views

How to calculate a 3D orientation from 2D vanishing lines on an image?

Let say I have a image that represent a 3D scene. I did not have the 3D camera orientation of that scene (left, up and forward vectors) and i'd like to calculate it. On that picture, I draw the ...
2
votes
1answer
259 views

Processing - implement a first person camera?

First off, I'm sorry if there are duplicates of this. I did an extensive Google search but was unable to find anything that made sense to me. (I am new to 3D rendering and such.) I want to make a ...
0
votes
0answers
68 views

*.3ds format support [closed]

Does the *.3ds format support: texture animation and light? What is the best game engine to use with the lib3ds? (I want a low level game engine) (its for lerning) Thank you a lot for answering my ...
0
votes
1answer
116 views

3D model editor manipulators

I'm trying to make my own 3D model editor to better learn 3D programming. I have my translate manipulators and I'm trying to calculate the Vector2 that the mouse would have to move in order to move an ...
5
votes
4answers
1k views

What is the simplest way to calculate distance in a 3D environment?

What is the simplest way to programmatically calculate difference between two points in a 3D game environment? I am trying to sort a list of light sources by how close they are to an entity, so that ...
0
votes
1answer
86 views

Is the rendering of distorted point clouds more complex?

I have two point clouds of n points: A dense ball-shape point cloud with many points inside A spherical point cloud with points on its surface. Is there (really) any difference between rendering ...
1
vote
4answers
1k views

Checking for collisions on a 3D heightmap

I have a 3D heightmap drawn using OpenGL (which isn't important). It's represented by a 2D array of height data. To draw this I go through the array using each point as a vertex. Three vertices are ...
1
vote
0answers
73 views

DirectX graphics issues [closed]

When you see something that looks like this And it's actually supposed to be like 100 models of asteroids. What would you say is wrong with it? Index Buffers messed up. Vertex Buffers? Projection? ...
0
votes
1answer
52 views

Implement a Vision cone in 3D

I'm looking at how to implement a vision cone for my AI. Everything I look at talks about a forward vector, but in my situation, and I'm not that great with math, I have a vector but it doesn't give ...
1
vote
1answer
85 views

Problems with texture orientation in space

I am currently drawing texture in 3D space and have some problems with it's orientation. I'd like me textures always to be oriented with front face to user. My desirable result looks like ...
1
vote
1answer
55 views

“aim at” in 3D space algorithm

I'd to calculate the cartesian rotate values of "aiming" one point at another in 3D space. For example, assuming rotation order of XYZ: Point A is at [0, 0, 0] Point B is at [2, 2, 0] If point A was ...
0
votes
0answers
42 views

Scene Graph - Single or multiple? [closed]

In general do you use a single Scene Graphs with ALL objects attached to that node, or do you use multiple scene graphs (i.e a scene graph for each level or area)? Thanks
0
votes
4answers
83 views

YAW not working correctly with XNA

I successfully draw the model, and made it move forward and backward, but when I try to make it rotates (yaw) its not working correctly, like its moving too instead of only rotate. Here is my camera ...
0
votes
3answers
85 views

How to render grid properly, especially over distance?

I'm drawing a grid, pretty much like one can see in the Unity editor itself or any 3D-editor, many 3D-related applications and some games. But it doesn't look pretty in my case. I put a few random ...
1
vote
1answer
409 views

LWJGL SlickUtil Texture Binding

I am making a 3D game using LWJGL and I have a texture class with static variables so that I only need to load textures once, even if I need to use them more than once. I am using Slick Util for this. ...
5
votes
1answer
1k views

3D isometric depth sorting

How is it possible to depth sort tiles and objects in an isometric environments without any limitations? I've been researching this for a while now and there seems to be no publicly available answers ...
2
votes
1answer
98 views

Easiest way to make a 3D overworld [closed]

Using something like Blender, would it be easier and more time and space efficient to create 'tiles', and use some kind of software like Tiled to use these tiles in the various maps, or would it be ...
0
votes
1answer
27 views

How to rotate model 180º with XNA

I got a model, and a camera pointing at this model, I think my camera position is the problem. Its showing the front of the model, but I want it to show its back like in third person. My camera code ...
0
votes
0answers
32 views

Legality on BSP maps and creating them using Open Source Editor Tools

I saw somewhere when you use BSP Quake Map Format with Id Software Official Tools that you need to acquire licensing when you release your game commercially with a map created with Id's own editor ...
7
votes
3answers
383 views

Sort Polygons in order - not working?

I'm fairly new to programming in a 3d world. I'm trying to create a canvas where all the objects are drawn in order of furthest-to-closest and from bottom to top - so they don't overlap each other, ...
0
votes
1answer
50 views

Perspective Projection - Drawing Lines

So I sort of understand the math behind projecting 3d points onto a 2d plane. It's just some simple dividing and multiplication of distances. However I can't seem to wrap my head around projecting ...
0
votes
1answer
125 views

XNA C# 3D game Wall collision response glitch

I have been working on a reliable physics system in my code and so far it's ALMOST working. :D I am aiming for wall "sliding" style of collision response, like you'd expect it to work in commercial ...
0
votes
1answer
62 views

Intersperse 2D with 3D opengl

I want to be able to draw 3D objects as well as 2D objects in an openGL environment. Normally, I would draw my 3D stuff, disable the depth buffer and depth mask, then draw my 2D stuff. However, this ...
0
votes
0answers
25 views

Using modo for Unity level modelling?

Is anyone using modo for modelling level meshes for Unity here? I'd like to know how to set up modo so that I can use the grid in modo and it will reflect 1 meter. I've set in modo preferences Unit ...
10
votes
8answers
2k views

Physics-perfect (or somewhere near) 3d sound engine [closed]

I'm new to game programming, although I have some years of experience in console/web development. My problem is not so much that I can't find what I'm looking for, it's just that I don't have the ...
0
votes
2answers
166 views

A*Pathfinding lose target after spawning from script?

I have been using A*Path finding to enable object tracking. It works fine if I have both objects on the scene at the same time. However, if I were to use a script to spawn the seeking object ...
0
votes
1answer
64 views

OpenGL Viewport inside of a Viewport

I'm creating a labyrinth in opengl, and I'm trying to create a minimap. For that, I thought of creating a viewport inside of a viewport. I already tried following a tutorial from Lazy Foo, and I can ...
0
votes
1answer
40 views

Scaling world - projection, view or separate matrix?

I am currently writing a simple 3D space visualisation program. Things get loaded into it from a simple XML file, which contains positions and sizes of objects in space, so you can put basically any ...
0
votes
0answers
38 views

Assimp - generate tangents and bitangents

I have started using Assmip 3.1.1 in my OpenGL application. Let's consider a simple example. Here is obj triangle model: mtllib triangle.mtl v -5.0 0.0 0.0 v 0.0 0.0 0.0 v 0.0 5.0 0.0 vn 0.0 0.0 ...
5
votes
0answers
159 views

How can I convert OBJ data into CSS3D transformations?

I want to convert the data in a 3D .obj file (vertices, normals, faces) to CSS3D (width, height, rotateX,Y,Z and/or similar transforms). I found a bunch of formulae and what-not, but 3D isn't my ...
2
votes
2answers
151 views

Movement on objects in 2D tile/grid based game

This question is an addition to both of these questions: Boat passing under a bridge in a 2D tile based RTS How to handle slopes/bridges in a 2d grid turn based strategy game While I get the idea ...
4
votes
1answer
258 views

Is it more efficient to render full size with AA, or scaled down with no AA?

Which is more resource-efficient (given a typical modern 3D game scene): Rendering it at 100% scale with anti-aliasing, or Rendering it larger and scaling it down to fit the screen, but without AA? ...
6
votes
1answer
525 views

Implementing line-of-sight in 3D?

I've been searching for information on implementing line-of-sight in my game. I've found some great resources for 2D implementations that produce pixel-perfect results, but there's very little info on ...
3
votes
1answer
62 views

What is FOVx in this diagram?

a beginner game developer here. I have recently taken upon learning about 3D game development and I am stuck on a simple matrix problem. The image is found from this article: ...