Java is both a popular object-oriented programming language and runtime environment which allows Java programs to run unchanged on most hardware and software platforms.
1
vote
0answers
18 views
Slick2D fails to load small textures
I'm trying to load a small 32x32 png texture using Slick2D, however it doesn't seem to render correctly. What's odd is that larger textures do load correctly.
The 32x32 texture I'm trying to load:
...
-1
votes
1answer
22 views
Exception in thread “Thread-0” java.lang.IllegalArgumentException: input == null!
whenever i run my game i get this Error.
Exception in thread "Thread-0" java.lang.IllegalArgumentException: input == null!
at javax.imageio.ImageIO.read(ImageIO.java:1388)
at ...
0
votes
0answers
13 views
Canvas doesn't draw
I've set app view on XML based layout:
setContentView(R.layout.mlayout);
with some views objects on it. Then, I added another view via:
RelativeLayout layout = (RelativeLayout) ...
0
votes
0answers
17 views
Ads are loading, but not showing?
TL;DR: My interstitial ads in my game are successfully loading, but when I call .show() on them, they don't show up!
I have followed these directions, and the ads load succesfully, but don't show ...
0
votes
0answers
30 views
Java multiple player objects/enemy objects?
NOTE: I'm a beginner and learning :D
Alright, so in my game I have a class for the player (with the parameters of x, y, color, width, height, and health, same parameters with the enemy). But I have a ...
1
vote
0answers
32 views
How to fix my issue with movement?
I am making a 2D tile game in Java, and I am having problems with movement, could someone tell me what I am doing wrong please?
I am having difficulty in "calling" the function vectorFromKey in main. ...
-1
votes
0answers
29 views
How to make character selection in slick2D?
I am trying to make the player able to select between two characters in slick2D, but I cant get the map class to use the variable holding which ever character the player selects.
Map Class:
package ...
3
votes
0answers
23 views
Calculate Relative Mouse Movements Regardless of position
Context
I'm working on making a variant of the atari game Breakaway IV and I'm trying to improve my mouse input handling.
I use the input of a mouse's motion left and right to move the bumper.
...
0
votes
0answers
31 views
JBullet is acting weird, what is causing these 'floating' rigidbodies?
I've been working on a 3D game engine in Java for a school project. The game engine had scenes containing game objects, these game objects contain components defining the behavior of each object. I'm ...
2
votes
1answer
98 views
Accelerated movement in a specific time to a specific point
I am trying to move my sprite in a specific time to a specific position while using frame-independent or time-dependent movement. My sprite is also accelerated every frame to simulate gravity. I know ...
1
vote
0answers
42 views
Texturing Cubes
How can I texture a cube that is able to rotate in x,y and z direction in pure Java?
Here is what i have tried:
package main;
import java.awt.Color;
import java.awt.Graphics;
import ...
1
vote
1answer
41 views
How to handle two players playing on one keyboard with Box2D (LibGDX)?
I'm making a racing game with LibGDX and Box2D. I've been using this tutorial to implement the basic physics, and it works properly.
My main problem is to implement two different sets of keys ...
0
votes
1answer
76 views
Why is my deltaTime in my GameLoop 0?
I have a question about my code. I wrote a basic GameLoop
for an Android Game and while testing it I realized the deltaTime
is always 0.
The code looks like this:
@Override
public void ...
0
votes
1answer
28 views
LibGDX--constant high score in top corner
I'm currently programming a game using LibGDX and box2D. I have a sprite (player) that moves up the screen, kind of like doodle jump.
I'd like to have my camera to be centered around the player at ...
3
votes
2answers
74 views
Designing ability interaction system
I am making a turn based game where player chooses a team of heroes with specific abilities for each of them. (ex. stun one enemy, deal 20 damage to all enemies, heal 10 HP to one ally,...)
The design ...
0
votes
0answers
36 views
Storage and Lookup of Voxel Chunks
How can one store chunks in such a way that they can be looked up using their XYZ location without wasting memory?
The problem with a HashMap<Vector3i, Chunk> is that you have to keep creating ...
4
votes
1answer
86 views
On a 2D generated terrain what is the easiest way to pick tiles for the shoreline?
If I have a two-dimensional array with ones and zeros for water and land respectively how do I choose what shoreline tile to use according to the water and land tiles surrounding it? The shoreline can ...
0
votes
1answer
22 views
LibGDX - Bundling Files
I have 3 files. A JSON file, a PNG file, and a TXT file. Is there any possible way I can put all three inside a common file with a custom extension? (for example "fileName.abc")
I searched the web a ...
3
votes
5answers
335 views
How can I make this day/night cycle computation repeat?
Here's my code for a day/night cycle. I have it set up so that when time (Statistics.duration) is the right number, the light levels switch.
It works great, but I'm at a loss for how to make it work ...
-2
votes
1answer
23 views
What is the purpose of the second parameter to Array.removeValue in libgdx?
I have been wondering what the second parameter of the method in Array removeValue does.
removeValue(T value, boolean identity)
What does indentify mean and should I pass true or false?
0
votes
1answer
30 views
OpenGL perspective matrix far plane
The near plane clips at exactly the value I set just fine but instead of clipping at 1000 the far plane clips at 1.
Here is the code for the projection matrix:
public static Matrix4f ...
0
votes
0answers
11 views
DragAndDrop release with pointer on payload
When I am moving my payload all the way to the corner it remains on the stage and my mouse goes over it when I then release (on a valid target) it returns null as a target and thus does not drop ...
0
votes
0answers
39 views
How can I make an Actor repeat the action on collision in LibGdx?
I want my EnemyActor to do this SequenceAction when it collides with my bullets.
I have already done the collision. Now the problem is that it only does the SequenceAction once when it gets collided ...
0
votes
2answers
50 views
how to add an onclick event to a button?
If I will draw a button with canvas with any programming language (java,javascript....) I want to know how to add the events to what I've drawn for example If I will draw a button piture then what I ...
0
votes
1answer
41 views
How can I apply effects to a character based on the tiles it occupies?
A mechanic of my game is that when a Character (Actor) steps on some specific tiles, they should be affected by status effects like slow, poison, burn, etc. These effects lasts only while the ...
-1
votes
2answers
59 views
How to lock the mouse cursor in the middle in a first person camera?
I want to get a first person camera (like Call of Duty or Minecraft etc.) but I don't know which is the best way to do it.
I have some camera increase rotation methods (camera.increase ...
2
votes
2answers
46 views
Java: problem with 2D corner collision
:)
It took me many days to create a working collision detection for a 2D java platformer... I am finally calculating the corners of my player but the system is still buggy and I hope that we can ...
0
votes
1answer
47 views
Frustum culling only working at certain angles
So how I'm doing this is a little sketchy but I plan on changing it to either AABBs or spheres once I get it working. So the problem I'm having right now is that the frustum culling I've implemented ...
0
votes
0answers
14 views
JBullet & LWJGL Rendering objects with jbullet transform
I tried to render objects with jbullet matrix transform. Its something like that: get float array where is stored matrix then put it to floatbuffer and load to Matrix4f using load() function. Use ...
1
vote
1answer
30 views
How to get the position in an actor inside a table with LIBGDX?
Well the title says it all, I want to get the position of an actor inside a table
Button button = new Button(bs);
table.add(button).width(50).height(50);
table.top().center();
By using
...
0
votes
1answer
42 views
Game Server Mechanic [closed]
Hey guys :) Im currently developing a little rpg duengon crawler.
I really want to implement a local and an online multiplayer function, i know how servers are working and how to make them using ...
0
votes
1answer
28 views
keylistener and synchronization
i have this code:
public final class PlayerInput implements KeyboardInputHandler{
public static final int INVERTED_AXIS = 0;
public static final int NORMAL_AXIS = 1;
private Sprite sprite;
private ...
0
votes
1answer
23 views
Libgdx + Box2d working with 2 cameras
Recently I have read that you can work with 2 cameras whenever you involve Box2d, which only works in meters.
In my Renderer class, I receive all the entities in the game and then draw them. I work ...
0
votes
0answers
20 views
Collision logic with Animations Java
Im trying to code a tile based platformer game with slick2d. While handling the collisions, Im facing with this problem. I could fix it for only that situation but I guess there must be a better way.
...
0
votes
1answer
68 views
How can I make an actor fire a bullet on touch?
I created a Jet and a Bullet, and when Jet is touched, the Bullet is fired.
Now I want to know how can I make the Jet fire again when touched after it has fired the first shot?
public class ...
0
votes
0answers
32 views
LibGDX - Player Movement Flickers
So, I was programming a very simple LibGDX game, so I decided to include a player class into the program. Once I did that, the players image started to flicker/stutter while I moved it.
Here's the ...
0
votes
2answers
42 views
Detecting position within a circle
I need to detect the position of a knob on a touchpad. I need to detect if it is in particular areas and if so, which one. The sections, of course, being the colored parts.
I know that the black ...
0
votes
2answers
73 views
How can I move an object around a canvas in a random direction at random times?
I am currently trying to move an object (circle ball) around the canvas in a random direction.
I have already written the code for the wall collisions so the ball bounces back into canvas when the ...
0
votes
0answers
39 views
Implementing BaseGameUtils with LibGDX for Google Game Services
I'm developing a game for Android in Java using Android Studio and LibGDX. I'm trying to implement the Google Game Services inside my game but I'm having trouble using the BaseGameUtils. Every time I ...
-2
votes
1answer
37 views
How to get system date? [closed]
How do I get system date like: month, day in libGDX?
I want to add to my game events that happen on specific date but I don't know how to receive it.
1
vote
1answer
42 views
Java - Adjusting the speed of an object during movement
I am trying to get an object to move (on java canvas) in the same angle but at different speed within the X and Y axis. Below you can see how i have implemented the movement of the object.
xPosition ...
0
votes
1answer
56 views
dual contouring concept and term translations
I am working on a 3D sandbox mmo with destructible terrain, using Java and LWJGL. I looked at most options to achieve this and found that dual contouring would probably be the best option for me. I've ...
0
votes
1answer
40 views
Render terrains depending of the player position (Chunks)
Well, I have an array with all the terrains. How do I render them? I just add them to a List of terrains that are sent to the Renderer. There, every terrain of the list is rendered.
The problem is ...
1
vote
1answer
61 views
How could I implement destruction of bases in Space Invaders type game?
What approaches could you use to implement the the gradual destructions of bases/shields in a top down shooter type game similar to Space Invaders?
The simplest approach could be to use a series of ...
0
votes
0answers
35 views
Box2D top down car weird spasm
im currently programming a 2d top down racing game with box2d and libgdx.
i have a car body to which there are 4 wheels attached. these 4 wheels are attached with RevoluteJoints ( for the front ...
0
votes
1answer
41 views
Ball can double jump in Jumper Game
I wrote a game that has a ball which can only jump (like in most jumper games) to avoid incoming obstacles (only, I haven't integrated the obstacles part yet). Right now, it's just a ball that can ...
5
votes
2answers
932 views
AI multithreading [closed]
MMO game. ~5000 (fake) players should be controlled by the server. Many of them have different classes -> different behavior. They should make some random pauses while doing some actions (~500-1500 ...
-3
votes
1answer
24 views
OpenGL ES 2 inheriting issues [closed]
I am Having an issue where one of my classes will not inherit the other ones variable value. In the class which is inherited. It shows the value of the float just fine. But when I go to the Class ...
1
vote
1answer
40 views
Player moving back and forth when moving with camera LIBGDX
I have a problem. When in libGDX my player moves across the screen and the camera is moving after him the player jumps back and forth a bit. Player still moves forward but it looks goofy
I'm moving ...
0
votes
1answer
36 views
Frame Rate Independence for Non-Linear Increases
So while working on my game, I decided that I would have a speed variable increase in the fashion
speed += 1/speed;
with the goal being that in the beginning it increases fast and then it increases ...
