jMonkeyEngine is a 3D game engine written in and for Java.

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11
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2answers
13k views

Open-source 3D models easily usable in OGRE3D/jMonkeyEngine [closed]

I'm looking for a source of 3D models (cars, game characters, furnitures etc.) which are usable in an open-source 3D game. I found various website with free/opensource .blend files. However it is not ...
8
votes
4answers
4k views

Looking for JMonkeyEngine tutorials and documentation

I'm looking for tutorials and documentation for JMonkeyEngine, beside the material on the official website. Any clue?
7
votes
1answer
3k views

How to invert background pixel's color

I'm writing a game and map editor using Java and jMonkeyEngine. In the map editor, I've got a brush done by wireframed sphere. My problem is: I want to make it visible everywhere, so I want to invert ...
6
votes
2answers
590 views

Best practise for representing large spaces in a scene graph

I'm attempting to represent a procedurally generated world in a scene graph, specifically in the Jmonkey engine (Jme3). To make this managable I have broken up the world into smaller chunks. Each ...
6
votes
1answer
983 views

Method of terrain in a 3d RPG

I am working on a RPG using the JMonkey engine. While I was conceptualizing the map, I realized I would have a problem with the terrain. My problem is this: I want to have a click to move interface, ...
5
votes
3answers
361 views

Drawing the same mesh or drawing the same material?

I was wondering. Suppose I have a 1000 grass meshes. They all have the same material, but I create them separately, because they look slightly different, because they have different heights. Does my ...
5
votes
2answers
612 views

Linux OgreXML model viewer

Is there an OgreXML model viewer for Linux? I know about OgreMax but apparently that's Windows only.
4
votes
1answer
391 views

How do I make a cube move by rolling?

I am learning jMonkeyEngine by making some small games with it. I have a simple rectangular cube that I want the player to be able to roll around the game world. When he presses the arrow keys, the ...
4
votes
1answer
1k views

Can't export Blender model for use in jMonkeyEngine SDK

I have a scene rendered in blender called "civ1.blend" which contains multiple materials (for example, I have one called "white"). I want to use this model in jMonkeyEngine, so I used the OGRE ...
3
votes
3answers
5k views

How do I export my Blender model to OGRE XML format for jMonkeyEngine 3?

I'm an amateur software engineer with several simple 2D-game projects under my belt. I'v recently turned my attention towards creating a basic 3D game, nothing too fancy, just to get a grip on things. ...
3
votes
2answers
191 views

What are “local” and “global” rotations?

Each node in jME3 has local and global rotations, which can be expressed in quaternions. What are they? Documentation has no clues, about in which state rotations are zero?
3
votes
1answer
238 views

What is wrong with my smooth shading code?

I am having trouble getting smooth lighting to work in Java Monkey Engine. My terrain is voxel-based, with an iso-surface generated via Marching Cubes over the data field. Up until now, I have been ...
3
votes
1answer
669 views

Models with more than one mesh in JMonkeyEngine

I’m a new jmonkey engine developer and I’m beginning to import models. I tried to import simple models and no problems appeared, but when I export some obj models having more than one mesh in the ...
2
votes
2answers
283 views

Convenience of mySQL over xml

Currently I use XML to store specific information to correctly load a few things such as a list of specfied characters, scenes and music, Once more I use JAXB in combination with standard ...
2
votes
1answer
566 views

How do I properly center Nifty GUI elements on screen?

I am new to JME3 game engine but I know Android XML GUI layouts pretty good. I have a simple layout here and I cant figure out what is wrong. Here is my XML code: <?xml version="1.0" ...
2
votes
2answers
568 views

jMonkey Quest Database

I am building a game in jMonkey (Java) and I have so far only used default quest text. But now I need to start populating a lot of quests with text. My design requires A LOT of quests texts. What is ...
2
votes
2answers
1k views

How can I move an object towards another along a straight line

How can I move an object (like a cube) towards another object? Let's say that we have a red cube in the center of a floor, and a blue cube in another location, there aren't objects between this two, ...
2
votes
1answer
674 views

jMonkeyEngine Pros and Cons

I want to know some good reasons to use jMonkeyEngine for a Java 3d game development tool instead of just creating a game with LWJGL myself? I want to know a good reason I should choose this tool. ...
2
votes
1answer
4k views

Correct way to export from blender to ogre format?

My question here is similar to this since I'm using jmonkeyengine and I'm looking for models and scenes to populate my 3D world Open-source 3D models easily usable in OGRE3D/jMonkeyEngine When I ...
2
votes
1answer
678 views

How can I rotate an Object towards a point in JMonkeyEngine

From time to time in my game, enemies spawn in different positions and they move toward a point. I need to rotate their body in such a way that their "face" is rotated towards the point. For enemies ...
2
votes
1answer
931 views

JMonkeyEngine display a spatial in a Nifty GUI interface

I want to display a spatial (or the rendering of a spatial/scene) in my HUD interface. I'm really not sure how to go with this. I have search the documentation, but all the queries I search yields no ...
2
votes
1answer
210 views

Get the game state using Multithreading in Java Monkey Engine 3

I’ve been trying out Java Monkey’s multi threading recently via the wiki’s tutorial. Since I just wanted to test a prototype clinet, I made a program which creates some cubes using the ‘Cubes’ library ...
2
votes
1answer
111 views

How can I extract the Geometry from a j3o file?

I created a blender file and then converted it into the j3o file. The only way to load the 3d structure in the game is through a Spacial object: Spatial towerModel = ...
2
votes
1answer
966 views

How can I import a .3ds file into JMonkeyEngine 3?

I am trying to import an animated character body (with skeleton) from 3D Studio Max to JMonkeyEngine 3, but while we succeeded at importing some animations, we cannot seem to export the skeleton to ...
2
votes
1answer
920 views

Teaching game development with Ruby [closed]

I want to teach game development to kids as part of a course (year-long) involving Ruby. Unfortunately it looks like the game development kits available in Ruby (even in the form of bindings) are ...
1
vote
1answer
671 views

Can I use jMonkeyEngine to make a closed source game?

Can I just share the jMonkeyEngine code and keep my code closed or would I have to make my game open as well? Sorry if this is a noob question.
1
vote
1answer
177 views

How free is BSD / CC-BY usage?

I looked at blendswap.com where there are models that I want to make walk along a wall in this level. AFAIK I can take this file and sell it or did I misunderstand licensing?
1
vote
1answer
345 views

How do I draw a line using jme3.scene.shape.Line in JMonkeyEngine 3.0?

I can successfully create the object, but it can't be attached to the rootNode. What can I do to make the line appear? I'll also would like to know how to reverse the effect(making it disappear) ...
1
vote
2answers
359 views

Endless terrain in jMonkey using TerrainGrid fails to render

I have started to learn game development using jMonkey engine. I am able to create single tile of terrain using TerrainQuad but as the next step I'm stuck at making it infinite. I have gone through ...
1
vote
2answers
22 views

How to add a texture in jmonkey

Hello I have a pretty simple question, I'm new to jmonkey and I want to add a .jpg file to the /assets/textures folder and dragging and dropping the file doesn't appear to work for me.
1
vote
3answers
249 views

JME3 Transparent Image Shows Geometries Behind

I'm using jME3 (JMonkeyEngine). I’m setting a geometry (a box with a bullet hole material/texture) to show transparency using material.getAdditionalRenderState().setBlendMode(BlendMode.Alpha); ...
1
vote
1answer
1k views

JMonkey - Create health bar?

How can I create a health bar in JMonkey? Is there some documentation that can help? I am working on a game, specifically “Battleship”, using the JMonkey Engine (JME3). I want to add health bars on ...
1
vote
1answer
393 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 ...
1
vote
1answer
531 views

Nifty popup fails to register

I'm new to Nifty GUI, so I'm following a tutorial here for making popups. For now, I'm just trying to get a very basic "test" popup to show, but I get multiple errors and none of them make much sense. ...
1
vote
2answers
2k views

How can I rotate a sphere in response to mouse movement?

I'm using jMonkeyEngine to develop a game. I'm good at scripting, but math usually goes over my head. I tried the Wiki page for Quaternion, but I was far too confused to figure this out myself :P My ...
1
vote
1answer
87 views

LWJGL exception in JME3-JFX!

Video playback in jMonkeyEngine 3.0 seemed to be in limbo for quite a while until I chanced upon this thread about playing videos by integrating JavaFX 2 into the JME3 framework. This coupled with the ...
1
vote
1answer
569 views

Scrolling Text in jMonkey

I am looking for a way to include scrolling text boxes in a jMonkey game. I have, of course, looked around online and could not find any examples or libraries that fit. My goal is to have "quests" ...
1
vote
0answers
54 views

Alternative to world/terrain editing with jmonkey

I have been studying Java for almost a year and have been trying to develop a game using jMonkey. I have tried Unity before but since I only know Java I decided to go with jMonkey. My problem is that ...
1
vote
2answers
89 views

How to determine this kind of vector?

Take a look at the picture. I've got a camera(brown) and its ray(red). As I know ray has a direction and unlimited length(if you don't set it yourself). But now I need to determine ray's vector ...
1
vote
2answers
233 views

What caused rotation in exported blender model to jMonkey? (OGRE)

First off, I am very new to jMonkeyEngine 3 and still learning. Not exactly sure what could be causing my snowman to have already been rotated before import. I created him in blender and it was facing ...
1
vote
0answers
467 views

How to identify whether the boundingvolume intersects with walls or floor when it doesnt return normals?

My game in jMonkey is the kind that use will have to place objects in a scene (which consist of walls and slabs and floor). All my models are centered at origin. When the user click a point I use ray ...
1
vote
0answers
270 views

Moving an object (pong paddle) along the x,y axis in 3d-space with mouse/touch

First of all: Sorry, my English isn't quiet good, I'm very new in 3D and I'am using JMonkeyEngine. What I would like to do?: A 3d pong game and I want to control the paddle with the mousecursor ...
1
vote
0answers
247 views

When attaching AI to a vehicle should I define all steps or try Line of Sight?

This problem is related to an intersection simulation I am building for university. I will try to make it as general as possible. I am trying to assign AI to a vehicle using the JMonkeyEngine ...
1
vote
1answer
60 views

My “puck” model object falls right through the “table” model in jMonkeyEngine

So I am trying to learn jMonkey, I have understood everything so far, and I thought I understood how to make objects solid, so things can't go through each other. When I create my Collision shapes, I ...
0
votes
3answers
1k views

How can I get rid of the diagonal wires in wireframe boxes?

I create a box with a material and set that material to be wire framed. Box b1 = new Box(new Vector3f(1.0f, -2.0f, 1.0f), 1.0f, 1.0f, 1.0f); Geometry geom1 = new Geometry("Box", b1); Material mat1 = ...
0
votes
1answer
72 views

AI for Minesweeper like game

I am currently developing a Puzzle/RPG game which works a little bit like Minesweeper. You have a Field of Tiles and 2, 3 or 4 different colors from which you can choose. Now you have to uncover tiles ...
0
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2answers
346 views

terrain not properly rendering

I'm extending the terrain quad with resources from various tutorials and have the following code: public class WorldTerrain extends TerrainQuad { public static final String NAME = "terrain"; ...
0
votes
1answer
1k views

Understanding .obj file

I downloaded a 3d model of a car. By judging by the skins and images available model treats wheels and car body as separate nodes. I want to access its child nodes (wheels) to specify animation. But ...
0
votes
1answer
72 views

Jmonkey loading texture from fails

I have the following basic code: public void simpleInitApp() { Box b = new Box(1, 1, 1); Geometry geom = new Geometry("Box", b); Texture cube1Tex = assetManager.loadTexture( ...
0
votes
1answer
76 views

How can I load a picture with alpha channel in JME?

This code loads a picture into the game: Picture mypic= new Picture("mypic"); Texture2D tex = (Texture2D) assetManager.loadTexture("Textures/mypic.png"); ...