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.

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3
votes
1answer
703 views

Best way to Draw a cube for 3D Picking on a specific face

Currently I am drawing a cube for a game that I am making and the cube draw method is below. My question is, what is the best way to draw a cube and to be able to easily find the face that the cursor ...
2
votes
1answer
143 views

How to decide face side of sprite

I am just starting game-dev with slick2D and marte engine. When I move my sprite left and right, I am doing walk animation but when the key is released how can I decide in which side the sprite face ...
0
votes
1answer
213 views

jBullet Collision/Physics not working as expected

Below is the code for one of my objects in the game I am creating (yes although this is a cube, I am not making anything remotely like MineCraft), and my issue is I while the cube will display and is ...
0
votes
1answer
924 views

Draw Cards and Eliminate Cards Problem

I am having a problem in this question. I want a system inside a game wherein the player draws 2 cards randomly, and the enemy draws 2 cards randomly. Then, what the program does is to print out to ...
1
vote
1answer
1k views

How can I achieve this lighting with OpenGL?

I'm currently trying to implement a type of "smooth" lighting. How can I achieve lighting which looks like this: http://dl.dropbox.com/u/1668516/concept/warp3.png Using OpenGl. I've attempted to use ...
1
vote
5answers
1k views

Error in my Separating Axis Theorem collision code [closed]

EDIT 2: Made some more alterations, now the one area i'm still confused on is: how to work out the vector to project on the separation axes? My projectOnto(..) method has some huge gaps now and i know ...
9
votes
3answers
755 views

Having a list of rooms with theirs connection to each other, how do I find isolated room groups?

I'm trying to create a small roguelike and went as far as random generating rooms and corridors. Each room is an instanced object and contain an arraylist of the others rooms connected by a corridor. ...
1
vote
1answer
950 views

AndEngine player, background and camera

I'm developing a 2D shooter using AndEngine. At the moment I'm trying to make the camera follow the player. As I've understood the common approach is to use the SmoothCamera zooming it and setting the ...
1
vote
2answers
724 views

How do I add AndEngine documentation in Eclipse?

I am very new to AndEngine. I have just downloaded the full documentation file, but I can't attach it to Eclipse. How can I do that?
2
votes
1answer
3k views

Making an efficient collision detection system

I'm very new to game development (just started 3 months ago) and I'm learning through creating a game engine. It's located here. In terms of collision, I know only brute-force detection, in which case,...
5
votes
2answers
2k views

Sprite batching in OpenGL

I've got a JAVA based game with an OpenGL rendering front that is drawing a large amount of sprites every frame (during testing it peaked at 700). Now this game is completely unoptimized. There is no ...
1
vote
1answer
762 views

Color based collision detection

I am making a game where you fly a ship around some randomly generated planets. Since I am using a for loop to draw over 5000 planets, using the rectangle class or an oval-type class for this is not ...
0
votes
2answers
877 views

Logic behind a checkers game? [closed]

I'm starting to make a checkers game and I've got all my graphics + the board drawn. Before I moved on to creating the pieces I was wondering what an easy way to tackle the logic side of the movement ...
1
vote
2answers
326 views

How should I generate and store the boundries of a cave?

I am making a small cave copter game (seriously, where did this type of game come from anyway) and I am trying to figure out how to make and store the procedural generated walls. I am thinking about ...
1
vote
4answers
305 views

Knowing state of game in real time

I'm trying to code a tic tac toe game in java and I need help figuring out how to efficiently and without freezing the program check if someone won the game. I'm only in the design stages now, I ...
2
votes
2answers
1k views

Game Database Connectivity Java

I'm developing a simple multi-player puzzle game in Java. Both players should be able to view the same game board on his own computer. Then, when one player makes an action in the game (ex. drags an ...
10
votes
3answers
1k views

Is there any relation between Game Theory and Game Development?

I'm a Java programmer interested to learn games on Java, recently I looked on a book on Operations Research written by Wayne L.Winston. There is a topic on Game Theory. It's truly mathematical. I'm ...
2
votes
1answer
134 views

Uniform not being applied to proper mesh [closed]

Ok, I got some code, and you select blocks on a grid. The selection works. I can modify the blocks to be raised when selected and the correct one shows. I set a color which I use in the shader. ...
0
votes
2answers
779 views

Circle physics and collision using vectors

This is a problem I've been having, When making a set number of filled circles at random locations on a JPanel and applying a gravity (a negative change in the y), each of the circles collide. I want ...
3
votes
2answers
3k views

How do you set the movement speed of a sprite?

I'm using Slick 2D/Java to play around with graphics. Getting an image to move is easy: Input input = gc.getInput(); if(input.isKeyDown(sprite.up)){ sprite.y--; }else if (...
4
votes
4answers
570 views

Can a high FPS negatively affect how a program runs?

Yeah I know this is a broad question and will get down rated, I'm just hoping for some answer before it gets closed. Anyway, I'm using Slick 2D/Java to play around with graphics. I'm having some ...
0
votes
1answer
2k views

rotate sprite and shooting bullets from the end of a cannon [duplicate]

Possible Duplicate: How to Align Gun with Bullets Hi all i have a problem in my Andengine code, I need , when I touch the screen, shoot a bullet from the cannon (in the same direction of the ...
1
vote
3answers
2k views

(int) Math.floor(x / TILESIZE) or just (int) (x / TILESIZE)

I have a Array that stores my map data and my Tiles are 64X64. Sometimes I need to convert from pixels to units of tiles. So I was doing: int x int y public void myFunction() { getTile((int) ...
-5
votes
1answer
77 views

Help, i cant reference my vars! [closed]

I have a sub-class(let's call it sub) and it contains all the function of an object in my game. In my main class(Let's call it main), i connect my sub to main. (Example sub Code: s = new sub(); ...
-8
votes
1answer
169 views

Is it the class that slows down the game? [closed]

My framerate lastime exceeds 1000 now the highest is 15. I have thousands lines of code in one class(I was still fresh last time and did not think of putting it in another class) Is it the class that ...
-2
votes
2answers
1k views

How do I make time?

I wanted to output a text for a certain amount of time. One way is to use threads. Are there any other ways? I can't use threads for slick2d. This is my code when I use threads for slick: package ...
2
votes
3answers
780 views

OpenGL Get Rotated X and Y of quad

I am developing a game in 2D using LWJGL library. So far I have a rotating box. I have done basic Rectangle collision, but it doesn't work for rotated rectangles. Does OpenGL have a function that ...
5
votes
1answer
3k views

Circle-Rectangle collision in a tile map game

I am making a 2D tile map based putt-putt game. I have collision detection working between the ball and the walls of the map, although when the ball collides at the meeting point between 2 tiles I ...
0
votes
1answer
239 views

MarteEngine Tile Collision [closed]

I need to add collision to my tile map using MarteEngine. MarteEngine is built of of slick2D. Here's my tile generation code: Code: public void render(GameContainer gc, StateBasedGame game, Graphics ...
-6
votes
1answer
1k views

How to remove the FPS text on slick2d?

How do I remove the frame rate text on the upper left corner?
1
vote
1answer
1k views

Java 2D Tile Collision

I have been working on a way to do collision detection forever, and just can't figure it out. Here's my simple 2D array: for (int x = 0; x < 16; x++) { for (int y = 0; y < 16; y++) { ...
1
vote
3answers
1k views

How to pass an interface to Java from Unity code?

First, let me say that this is my first experience with Unity, so the answer may be right under my nose. I've also posted this question on Unity's answers site, but plugin questions don't seem to be ...
1
vote
1answer
715 views

How to I get a rotated sprite to move left or right?

Using Java/Slick 2D, I'm using the mouse to rotate a sprite on the screen and the directional keys (in this case, WASD) to move the spite. Forwards and backwards is easy, just position += cos(ang)*...
2
votes
2answers
1k views

Why does my game loop speed vary on different platforms with the same hardware?

I've got a serious issue with my game loop. This loop varies in time with the platform and with the same hardware. This is a list of FPS achieved: - Windows ======= 140 to 150 - Linux ...
-5
votes
2answers
195 views

How to stop reducing life? [closed]

CODE Input input = gc.getInput(); int xpos = Mouse.getX(); int ypos = Mouse.getY(); emu = "Enemy Life : " + enemyLife; Life = "Your Life Is" + life; ...
1
vote
1answer
159 views

how do I add development build number each time I compile and play? [closed]

I wanted each time I play my game, it will show in the console how many times you compiled or run the game. How do I do that?
0
votes
2answers
2k views

How do I create a Loading Scene in SLick?

I actually wanted just a fake loading scene. For a fake loading scene, how do I make a time variable or a time Method? I'm still a fresh java programmer!
-1
votes
3answers
3k views

Collision between sprites in game programming?

I've since just started coding for an android game using eclipse. I've read Beginning Android Game Programming and various other e-books. Recently, I've encountered a problem with collision between ...
0
votes
1answer
58 views

Scrolling though objects then creating a new instace of this object

In my game when pressing the right mouse button you will place an object on the ground. all objects have the same super class (GameObject). I have a field called selected and will be equal to one ...
0
votes
2answers
748 views

Can't get sprite to rotate correctly? [closed]

I'm attempting to play with graphics using Java/Slick 2d. I'm trying to get my sprite to rotate to wherever the mouse is on the screen and then move accordingly. I figured the best way to do this was ...
-2
votes
2answers
96 views

How to use outside int to be used in my class? [closed]

I wanted my character's life to be the same as the other game state. My other game state is different the from my original state. I wanted to link my int to my new game state to make it the same. How ...
6
votes
2answers
14k views

How can I move a sprite in the direction it is facing?

I'm using Java/Slick 2D. I'm trying to use the mouse to rotate the sprite and the arrow keys to move the sprite. I can get the sprite to rotate no problem, but I cannot get it to move in the direction ...
-1
votes
3answers
251 views

Novice prototyping a massive multiplayer webpage based gaming system [closed]

I'm trying to build a website based game in which various pages of the site act as different areas of the game. I am wondering what you would recommended as a design structure. Which languages would ...
-1
votes
1answer
963 views

Resource not found?

When I write in my terminal, java -jar myJar.jar, it gives me an error "Resource Not found res/playNow.png" When I run it in eclipse, it does not give me any errors about this image. My folder in my ...
0
votes
2answers
180 views

Unable to access jar. Why?

I was making a game in java and exported it as jar file. Then after that, I opeed jar splice. I added the libaries and exported jar. I added the natives then i made a main class. I created a fat jar ...
3
votes
2answers
1k views

Checking if an object is inside bounds of an isometric chunk

How would I check if an object is inside the bounds of an isometric chunk? for example I have a player and I want to check if its inside the bounds of this isometric chunk. I draw the isometric chunk'...
5
votes
4answers
1k views

Better way to generate enemies of different sub-classes

So lets pretend I have an enemy class that has some generic implementation and inheriting from it I have all the specific enemies of my game. There are points in my code that I need to check whether ...
-1
votes
1answer
545 views

How to make an Image still when at position at Slick 2D?

I wanted to have a build functions. When I press for example 2, the image will appear with my character. The question is, how do I stop it from following my character //build //I created many ...
-4
votes
1answer
114 views

Questions about an Engine Java [closed]

so I am going to start developing Java games (3D) but I have a few questions. So I dont know if I should use an engine or make my own. I feel like I am "cheating" if I use an engine to make my game. ...
2
votes
1answer
1k views

How do I make my Slick2D game fullscreen?

How do I make my game fullscreen? It's always in windowed mode. I'm using Eclipse on a Mac.