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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405 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) ...
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3answers
476 views

Missing z-axis rotation for transforming between two vectors

I'm trying to rotate a cube so that it's facing up, but am getting hung up on the final implementation details. It now reliably will rotate the x,y axis to the correct side, but the z-axis is never ...
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1answer
413 views

help a 2D image onto a 3D cube

I am just diving into the Stage3D APIs for Flash Player 11. I am trying to figure out a simple way to display isometric 2D content that gets blitted from a sprite sheet onto a 3D cube. The idea ...
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2answers
331 views

Intuitive way to handle dragging outside the Arc Ball?

So I'm writing a game (or toy, rather), which involves manipulating a 3d object with the mouse. I'm trying to get the most intuitive control that I can. I've implemented the "Arc Ball" mouse control. ...
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1answer
1k views

How to install java 3d in ubuntu

I'd recently asked a question for getting started in game development from where I was suggested for the book "Killer Game Programming-Java". On the page there is a java 3d program which needs to ...
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1answer
144 views

3D Location Handling

I am thinking about making a simulator type game that will involve having lots of small objects in a 3D space. What is the typical solution for handling these objects? The first thing that comes to ...
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1answer
327 views

3D motorcycle models for web 3D tools

I'm developing a website that can display 3D models of motorbike. I haven't decided on which tool to use yet but it seems most of them support X3D and VRML files. So I'm searching for already-made ...
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2answers
907 views

How do I move a 3D particle using the Mercury particle engine?

I'm currently creating a 3D game with XNA, and I am in need of some particles.That's why I searched for a particle engine. I found Mercury, watched the tutorials and integrated it in the game. But ...
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2answers
780 views

How do i get the X,Y and Z of the way my unit is facing?

I have the yaw and pitch of my unit at my disposal, I know if I use polar to cartesian conversion I'll get the X and Y of each one of those two, but I need them combined to give me the x,y and z of ...
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1answer
583 views

XNA Automatic Collision detection from model?

This is going to be a rather vague question xD In XNA is there a way of working out if a point or rectangle is colliding with a 3D .x object? It is a big model, and would take a long time to map out ...
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2answers
477 views

Rotating coordinate system

Lets say that you want to rotate simple cube around fixed point in center. Is it possible to use such coordinate system, that you need to use only sine and cosine in order to rotate? I have done ...
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1answer
1k views

Converting to and from local and world 3D coordinate spaces?

I've been following a guide I found here (http://knol.google.com/k/matrices-for-3d-applications-view-transformation) on constructing a matrix that will allow me to 3D coordinates to an object's local ...
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1answer
302 views

3d environments and managing them on iOS

I would like to start learning 3d game development and currently only develop 2d games. A few basic questions I am interested in are: What is used to create the 3d environments? Are they all done in ...
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1answer
272 views

On 3d ripper DX and other 3d asset tools that can help boost 3d artists learning

Aside from 3d ripper DX does anyone know any other 3d asset tools to help 3d artist in learning modelling and/or animations.
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1answer
58 views

XNA: “TextureCoordinate0” missing, but I'm not using textures

I'm trying to create a voxel game using XNA, but I'm getting a somewhat bizarre error when calling DrawIndexedPrimitives(): InvalidOperationException was unhandled The current vertex declaration does ...
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1answer
90 views

How can I implement a camera like the one in RotMG?

RotMG, an MMO top-down shooter, takes on a unique 2d-3d style, and has an intriguing camera; The game is obviously 3d, not simply isometric, and if you play the game and turn on camera rotation you ...
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1answer
47 views

Alpha blending, transparence and z-ordering

I'm making some tests with alpha blending in a projet and I don't understand something. In my tests I've done something like that and everything look good: Draw blue box first (depth test: true, ...
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1answer
52 views

Custom 3D Noise function incorrectly generating in Lua

I have been working on a custom noise generator (not Perlin on Simplex or whatever), which works fine in two dimensional space, but upon converting it into three dimensional space, it turns into a ...
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1answer
69 views

How to find the 3D object the camera is pointed at

I'm currently developing a 3-dimensional game (the first I've ever done and it's not as hard as I thought it would be!), but I've run into a little bit of a snag. I want to find the current block the ...
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1answer
138 views

How do I implement melee hit boxes for a top-down game?

For a 3D top-down game, how should I handle collision in melee combat? My game has no targeting system, so I can't use a simple distance check between attacker and target. What I am thinking is have ...
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1answer
28 views

XNA - DrawIndexedPrimitives or DrawUserIndexedPrimitives?

When rendering primitives in XNA, does it matter if I use DrawIndexedPrimitives() versus DrawUserIndexedPrimitives()? RB Whitaker uses the former, while Reimer's uses the latter. From what I can ...
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1answer
67 views

How can I do a weighted cascade down a path in a 3D environment?

I am trying to perform a weighted cascade down a path in a 3D environment. Now, what I am trying to do is have one object(a cube) in the environment scan from its coords 1 in every direction for ...
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2answers
88 views

Should I shade models before or after importing them into Unity?

Is it better to shade a model inside the 3D modeling software or inside Unity? As an example, if I need to use a transparent model, should it be made transparent inside the modeling application or ...
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1answer
139 views

Resolution independent game world in 3D

I'm developing a game similar to Don't Starve - 2D billboards in a 3D world. Now I have encountered a problem with resolutions. I want the player to be able to change resolution, but I don't want to ...
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2answers
136 views

How to determine the visibility of a single vertex, given a viewpoint?

I have a 3D triangle mesh, and I want to know, given a viewpoint (defined by a model, view and projection matrix), if a certain vertex is visible or not. My approach was to render the mesh using ...
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1answer
228 views

Unity: Rolling a ball around a spherical planet with forces

I'm trying to make a game in Unity where the player character is a ball (a sphere), and the game world is a planet (a very large sphere) that the ball can roll around on. The ball can be rolled in any ...
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1answer
206 views

In 3D camera math, calculate what Z depth is pixel unity for a given FOV

I am working in iOS and OpenGL ES 2.0. Through trial and error I've figured out a frustum to where at a specific z depth pixels drawn are 1 to 1 with my source textures. So 1 pixel in my texture is ...
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1answer
137 views

Most common format & good practice for 3D models for a placeholder in a PC game [closed]

I'm soon starting programming my first 3D game in OpenGL, C++, for PC. It's going to be a top-down space-based game. Early on I want to create basic placeholder 3D models for my objects, and then in ...
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1answer
93 views

SetFloat() in HLSL shader (effect) has no effect - variables stay at 0

I have a problem wherein I'm trying to set two simple float variables in my shader. I have a dozen other shaders in this project where it works fine, but for some reason, I've got a bug in this one ...
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1answer
154 views

Draw character silhouette when not visible

I have a mesh representing my character. I want to give it a partially transparent greyish silhouette when other objects are blocking it from view of the camera. I'm using Ogre3D, and GLSL as a ...
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1answer
2k views

How can I make caves with Unity's terrain creator?

With Unity's terrain creator, I can't simply make a "hole" on the mesh. I don't know how I would make cave-like structures other than using "rock" meshes for the roof (wich will indeed look weird) ...
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1answer
258 views

Replace a div (with a ball picture in it) with a 3D canvas ball [closed]

I am trying to make a game where you have to keep the ball on a green platform. At this point the ball is a div with a ball image. You can move the ball over the field, all works great. See it in ...
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1answer
532 views

Correct rotation with Quaternion

I have some problems with a rotating marble. I've tried it with Matrix.CreateFromYawPitchRoll and Matrix.CreateRotation but there were some problems, I think it's due to the Gimbal lock effect. So, ...
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1answer
984 views

Moving bounding box in 3D using Libgdx

How do i go about moving a bounding box in libgdx? I want to make the bounding box capture my character and move with him. So ideally i want to be able to copy my vector 3 from my model instance and ...
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1answer
107 views

How to render models using a personalized projection matrix?

I'm creating a game with a great sprite demand. Out team is considering automatizing the sprite generation using 3D models. The problem is we have a very particular ortographic projection: We have ...
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1answer
66 views

Export object or scene with textures

Is there a way to export or publish some work to a folder so somebody else can open the .max file and does not have to reassign all the textures again? My problem is that i used lots of textures ...
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2answers
300 views

What am I missing? (Converting 2D mouse coords to 3D space)

I'm making a networked game which has a birds-eye view and I'm trying to convert the 2D mouse coordinates into 3D space. Right now I have a perfectly flat grid and it intends to remain perfectly flat, ...
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1answer
197 views

How can shears/reflections/enlargements be represented by 4x4 matrices? [closed]

I understand that 4x4 matrices can represent transformations on a 3d point (represented as x, y, z, w) Eg, a translation is [1 0 0 0] [0 1 0 0] [0 0 1 0] [x y z 1] where x, y and z are the amount ...
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1answer
623 views

How to make minecraft like world round?

everyone! I'm interested is there a game or at least example which shows how minecraft-like world turn to sphere? Idea is that there is sphere which consists from cubes like in minecraft but they ...
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1answer
196 views

How to grab textures from a texture atlas to be applied to 3d objects

Fairly basic question, but I'm having trouble on finding information on this sort of thing for beginners. I'm just trying to make cubes with different textures on the sides as a starting point. I have ...
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1answer
256 views

How can I find the location of OpenGL object after rotation?

I have a rotating object, a cube, which I rotate in OpenGL as follows: gl.glPushMatrix(); gl.glTranslatef(400.0f, 300.0f, 1300.0f); gl.glRotatef(m_x, 4.0f, 0.0f, 0.0f); gl.glRotatef(m_y, 0.0f, 4.0f, ...
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2answers
368 views

Jump without bouncing in physics engine

I am using Ogre3D as my rendering API, and OgreBullet as my physics engine. I have an test entity that when the y part of the velocity is 0 and spacebar is pressed, the velocity changes to, lets say: ...
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1answer
161 views

3D solid object in terrain

Im trying to make a solid object to stay always in the terrain level, but I am facing some problems. The terrain is not flat, I mean, it can have mountains and craters for example. I just have a ASE ...
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1answer
1k views

Best way to go with 3D dungeon crawler generation [closed]

I'm trying to prototype a little 3D dungeon crawler. That is, the same system as any rogue-like : A map with little rooms, linked by hallways. But in 3D. The world is still in blocks, but I can go ...
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1answer
145 views

3D Camera raytracing (PSM SDK) [duplicate]

I am currently creating a 3D Camera on the Playstation Mobile SDK (which is basically openGL with just a little bit of abstraction). The game I am trying to make is a 3D Tactical. That means my world ...
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1answer
191 views

Books on layout and space sequencing in game design

I'm currently looking into level design books. So far I've read two, The How's And Why's of Level Design and the Ultimate Level Design Guide. While both were useful they did not discuss layout and ...
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1answer
367 views

Need help with a complex 3d scene (using Ogre and bullet)

In my setup there is a box with a hole on one side, and a freely movable "stick" (or bar, tube). This stick can be inserted/moved through the hole into the box. This hole is exactly as wide as the ...
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1answer
86 views

How to calculate the distance between a Vector3 and a (3D polygon triangle)?

How to calculate the distance between a Vector3 and a (3D polygon triangle)? for example : " float DistanceToTrianale( Vector3 pos, Vector3 Edges1, Vector3 Edges2, Vector3 Edges3) thanks in advance
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1answer
150 views

A controlled trapezoid transformation with perspective projecton

I'm trying to implement a controlled trapezoid transformation in Adobe Flash's ActionScript using the built-in perspective projection facility. To give you an idea of how the effect looks like: ...
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1answer
118 views

Movement constrained to the faces of a cube

The basic setup I'm working with is a cube rendered in-Engine (Panda3d, although I only am looking for a generalized solution) as well as a 2d square on one face of the cube. The eventual outcome I'm ...