Java is both a popular programming language and runtime environment which allows Java programs to run unchanged on most hardware and software platforms.
-2
votes
0answers
32 views
I am currently working on a 3d graphics engine, I believe I have the math and logic right, however i am not certain [on hold]
I am coding a 3d graphics engine using java. My setup is a 3 dimensional coordinate field. It is configured using an ArrayList of Points, sequential letters for simplicity's sake. Turning is affected ...
-1
votes
0answers
28 views
arrayindexoutofbounds [on hold]
i'm new in this site and i've been learning java for 1 month, escuse my grammar.
I want to make a game about a character that has to dodge bullets that appear every 3 secs, and are messing around the ...
-2
votes
0answers
22 views
Libgdx how Coverflow animation [on hold]
Please see this link and suggest me how to make this animation in libgdx..
http://code4app.net/ios/Infinite-Scroll-Picker/51ecb20a6803fa7b31000000
Suggest me any idea ya link. I don't know how to ...
0
votes
0answers
28 views
Supporting all my online players in one single server machine [on hold]
I am developing an online mobile game for iOS and Android.
I am writing a Java socket server in a Windows VPS. Each player will open a TCP Socket connection, which, by design, must remain open until ...
0
votes
0answers
54 views
Java math equation help! [on hold]
So I am making a method to get the level of a player for how much experience they have, and the other way around.
public static int getExpForLevel(int level)
{
int exp = (int) ((30 * level) + ...
0
votes
0answers
11 views
Configuring eclipse exporting - export res folder into jar's /res [migrated]
NOTE: I use new File(...) instead of getResourceAsStream(...) so i can then easily make it to Slick's Texture class.
I'm having a trouble with exporting my resources folder in eclipse.
This is my ...
0
votes
1answer
36 views
Ram usage , libGDX game development
I am developing android game using LibGDX . The game data (images , sounds etc.) are maximum 25mb . But when the game is running on Android device it places 110mb there (look at the image)
110mb is ...
0
votes
0answers
18 views
Slick2D Graphics NullPointerException [on hold]
I am new to Slick2D. I want to draw a string of text to the screen (in the center of the window).
I created a Graphics object, and then called drawString() with the graphics object. However, I keep ...
0
votes
0answers
12 views
Jmonkey Translucent Render Bucket fails to model object last
So I have a weapon model that moves wherever the camera moves and the rotation of the weapon is the same as the rotation of the camera. Additionally I added the weapon to the Translucency Queue Bucket ...
-4
votes
0answers
147 views
orienting game design [closed]
Abstract
We are planning an orienteering game.
The aim of this game is to arrive at the goal (G) from the start (S) with the shortest distance.
However, the players have to pass all the checkpoints ...
6
votes
1answer
2k views
Why do my images take 200 MB of RAM when they are ~20KB on disk?
I am creating an Android game using libGDX. When I load my nine images it takes 200 MB of RAM. But the images are 10 to 17 KB each. Why the discrepancy? Here is where I create textures from those ...
0
votes
1answer
11 views
Understanding HingeConstraint in jBullet
I'm using the java port of BulletPhysics engine jBullet.
I'd like to make a joints between 2 triangles so that one edge of the first and one edge of the seconds act like a hinge.
But I don't ...
0
votes
0answers
14 views
Using debugdraw in jbox2d
I've created a class which implements org.jbox2d.callbacks.DebugDraw.
And implemented the abstract methods too.
DebugDrawHandler extends org.jbox2d.callbacks.DebugDraw
I've instanciated it with:
...
0
votes
1answer
47 views
Box2D Body creation causing performance issues
I have at max 10 dynamic bodies in my world at any time. they are created at random and fired up from below they screen. when a new body is being created, the fps falls from 59 - 61 to about 35- 40 ...
0
votes
1answer
177 views
OpenGL generate hills looking vertices
I want to generate a terrain which looks like hills. Some sort of sine waves. Should be as simple as possible. But I can not figure out how. I get very scary results, which are nothing worth. I need ...
0
votes
0answers
28 views
How to get yaw of bullet physics vehicle?
I am using the Bullet Physics port to java, JBullet, and am trying to render a vehicle body that i created in Blender on top of the vehicle chassis. Since i cannot effectively find a way to render ...
0
votes
0answers
32 views
OpenGL ES 2.0 - Applying rotation to only specific quads within a batch
This problem seems fairly simple on the face of it: How, when drawing a batch of quads using a triangle strip, can I apply a rotation to only one or some of the quads.
I've been looking at this ...
1
vote
1answer
86 views
Making sprite rotate smoothly
I have a sprite that I want to rotate smoothly and face the opposite direction:
This is my render function:
public void render() {
// Game Loop
Gdx.gl.glClearColor(0.7f, 0.7f, 0.2f, 1);
...
0
votes
1answer
29 views
Making sprites move in oppsite direction of vector
I have a sprite that moves from the bottom left of the screen to the top right. What I want to know is how would i make it turn around and go in the opposite direction, and continue this loop.
I ...
0
votes
3answers
96 views
Dynamic Crafting Systems [closed]
I have been toying with the idea of having a game that is based purely around crafting. That on its own is not much of a big deal. The way the crafting would work is the problem.
The idea I have is ...
-3
votes
0answers
51 views
libgdx; how to slide the image ya popup [on hold]
I want to slide the image foe Example any Car Racing game when choose any car than slide the car popup. thats my problem how to slide the popup in the libgdx. Ya how to use Translate animation ya any ...
0
votes
2answers
96 views
Dealing with multiple scenes /levels
Overview
I have a scene manager in my game and in each 'Scene' I have a render() and a update() method for drawing and updating my game's logic.
Basically, when I want to switch to another scene, ...
0
votes
1answer
80 views
How to implement mouse based movement in an RPG? (Java) [duplicate]
I'm making a 2D rpg and I want the character to move with the mouse, ie the user clicks and then the character moves to that location. How do I accomplish this?
1
vote
2answers
143 views
Should FPS exceed ticks/second?
I was once told that you should never re-draw a frame if the game logic has not changed since the last draw.
Assuming game logic is updated once every tick, and assuming a game runs at 40 FPS @ 20 ...
0
votes
2answers
236 views
Is object-oriented underestimated for game development? [closed]
I'd like to understand whether the object-oriented paradigm applied to game programming is bad, or whether it's just an urban legend.
A friend of mine is developing a game with HTML5 and Javascript ...
-1
votes
1answer
64 views
Why Is My AABB Collision Detection Not Working
I am going to be making a 3D game and I need to be able to test for accurate collision. I was able to get bounding sphere collision working (too inaccurate to be used for the whole game), but AABB ...
0
votes
1answer
114 views
How to determine the distance between a point and a rotated rectangle
This question is very similar to How do I calculate distance from a point to a rectangle?. But that question assumes that the rectangle is axis-alligned, or not rotated.
So just like in that ...
0
votes
1answer
49 views
Java 2D RPG Game smart pathfinding [duplicate]
Hello I have a top down survival game where you shoot bad guys(green squares). The player can collide with certain tiles and so can the mobs but I want the mobs to go around the tile if there is a ...
0
votes
0answers
102 views
Calculating Projectile Movement
I'm having some trouble putting together a method that will constantly move a "bullet" in the same direction accurately. Here is what I have so far
public Vector3f moveFromPosition(Vector3f location, ...
-2
votes
1answer
59 views
How to spawn multiple enemies? [closed]
I can store it in an array, ok, but after how can i paint it? Because if i do
enemy = new Enemy();
enemy2 = new Enemy();
i create two istances of the object, but afer how can i paint it?
I use:
...
1
vote
1answer
64 views
How would you declare a Texture object in the libgdx skin json file, using a region from a texture atlas?
I have a texture atlas that is linked to my skin.json file. The atlas contains a region named "game-title".
I would like to declare a com.badlogic.gdx.graphics.Texture object in the json file, to ...
0
votes
1answer
79 views
Location of “units” in Code
So, I've been playing around with the concept of a game, mechanically think of the Civilization games(Tile, turn-based strategy) but I am quite uncertain about where I should store the units location ...
0
votes
1answer
71 views
Per vertex diffuse lighting not propogating across entire model
I'm not sure how to describe this problem so I've added a picture. When I add per vertex diffuse lighting to my model (just a field of cubes for simplicity) the lighting effect applies to each ...
2
votes
1answer
153 views
Avoiding memory allocation in Android game development
For obvious reasons, allocating memory on the fly in Android game development is not recommended. For example:
http://developer.android.com/training/articles/perf-tips.html:
There are two basic ...
1
vote
1answer
70 views
What is the relationship between glVertexAttribPointer index and GLSL location?
I've been getting some strange results when trying to implement a normals buffer for the purpose of rendering lighting. It seems to be related to the indexes for glEnableVertexAttribArray, ...
-1
votes
1answer
31 views
Screen flashing while window is open [closed]
The screen renders everything in the right place but the entire screen flickers/flashes while it's open. Any Ideas?
TileMapEditor class
import com.stardust.main.gfx.Assets;
import java.awt.Graphics;
...
0
votes
0answers
9 views
Creating bullets at tip of rotateable object? [duplicate]
I am and not very good at trigonometry or whatever it is i'm even using. My problem is that I simply cannot figure out how to create the bullets exactly at the point of my object. The object rotates ...
0
votes
0answers
6 views
Circular references in Nation-Town-Citizens chain [migrated]
Say I have three classes, Nation, Town, and Citizen. A nation contains towns, and a town contains citizens.
public class Nation {
Set<Town> towns;
}
public class Town {
...
0
votes
1answer
39 views
TileMap not not rendering
I have a tile map that I would like to be able to move while playing the game. In the code you will see the posX and posY variables. I used these variables so that when I complete this, I can have the ...
1
vote
1answer
51 views
Rotating an object to point towards the mouse [duplicate]
I'm using slick2d for this process and trying to rotate a minigun to face the mouse. My problem is that the minigun in my game is actually rotating but no towards the mouse at all! Also, the minigun ...
1
vote
1answer
73 views
IBO interfering with VBO data?
I have a vertex and color VBO that render a plane (2 triangles) just fine. However, when I attempt to use an IBO to render the plane, the vertices are completely off. My nice square looks all crumpled ...
0
votes
1answer
35 views
Using IBO's with color
I am trying to familiarize myself with IBO's by drawing triangles etc but I'm finding no way to get the color to apply properly. Can I not use an IBO to index the color values as well? I am having ...
0
votes
0answers
119 views
libgdx building 3D terrain
I've been spending a lot of my time working with libgdx scene 2d & have become very familiar with it. I've decided I want to move over to 3D & take a couple of weeks to learn & better ...
1
vote
0answers
44 views
Why does my texture-based object picking detect the wrong object?
I am a LibGDX beginner implementing a RISK-like game. I want to let the player select territories by clicking on them, but for some reason, the wrong territory is sometimes detected.
The clicked ...
2
votes
0answers
39 views
Why do my Box2D bodies occasionally get stuck and separate forcibly?
I'm making a space game with LibGDX and Box2D. I made a video here to illustrate the issue.
Verbal description: When objects collide, they sometimes get stuck together and are then suddenly separated ...
0
votes
1answer
70 views
Box2D object wont move until tons of force is used
Im making a game for android im using LibGDX and Jbox2D it is a space flying exploration game controlled with the accelerometer. so I have set the world to no have no gravity. the objects in Box2D ...
0
votes
2answers
203 views
How do I make an 8 bit sprite sheet using GIMP or Paint.NET?
I'm looking to create a sprite sheet for an 8 bit, 2D RPG I'm making. All I need to do at the moment is render in some textures. To do this, I want to make an 8x8 sprite sheet. Now, I am really bad at ...
0
votes
0answers
16 views
Projectile Motion in lwjgl with java [duplicate]
I was trying to make a game with a bow and arrow using lwjgl but I couldent get the arch right. I have a function called projectile that is updated once a frame for each arrow. my frame cap is at 60 ...
1
vote
1answer
69 views
Smooth anmiation with LibGDX
I want to move a enemy from its current position toward the mouse position in LibGDX.
x, y - enemy position saveX, saveY - position where my enemy need to go(or mouse position saved at specific ...
1
vote
0answers
50 views
JBox2D Objects moving slowly (pixel to meter conversion) (SOLVED) [closed]
This problem is solved
When trying to program a game using Box2D, I ran into a problem with Box2D. I filled in pixel numbers for the lengths of the the textures and sprites to create a box around it. ...
