The Slick2D graphic engine and utility collection is meant to make the development of games using LWJGL easier.

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657 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 += ...
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2answers
2k views

Creating maps and tileset for a 2d java game

I'm not a completly beginner to java, so I decided to write a map loader and a tileset loader myself instead of using a tilemap editor like Tiled. I'm using Slick & LWJGL for my game. The plan ...
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341 views

Invert colors Java rendering

I am making a 2d platformer in java using the slick2d engine. I only use 2 colors: black and white. I want to implement a feature were i invert the colors of certain entities. However i can't find a ...
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1answer
4k views

How do I play background music in Slick/LWJGL?

I'm trying to play music in the background for my opening menu, but cant seem to find a tutorial specifically on how to play a music file. Does anyone know how this can be accomplished?
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5answers
2k views

Collision detection - player gets stuck in platform when jumping

So I'm having some problems with my collision detection with my platformer. Take the image below as an example. When I'm running right I am unable to go through the platform, but when I hold my ...
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1answer
317 views

Slick2D drawString with coordinates from bottom-left corner

For OpenGL text drawing I use Slick2D library. Default Slick2D 0:0 coordinates are at upper-left corner. But in my project I use bottom-left corner for 0:0. Is it real to configure Slick2D with ...
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3answers
3k views

How do I load tmx files with Slick2d?

I just started using Slick2D and learned how simple it is to load in a tilemap and display it. I tried atleast a dozen different tmx files from numerous examples to see if it was the actual file that ...
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1answer
824 views

Using Slick2D/LWJGL to brighten an Image

Using the Slick2D Library for Java, I want to know if there is a way to brighten an instance of org.newdawn.slick.Image. I'm willing to use other image-manipulation libraries if need be.
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24 views

Error When Loading a .tmx TILED map through the TiledMap class

So I made a map using the TILED application and I have it as a .tmx for reasons, but whenever I use the TildMap class in the Slick2D library to render the map on the screen, it gives me an error. Here ...
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1answer
42 views

Java game LWJGL input doesnt work properly

Im making a game in LWJGL 2 and Slick2d. Im trying to add an item to my inventory by releasing a key (the inventory system works properly, the part where I have to see if the button was RELEASED is ...
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1answer
66 views

Java Slick2d lighting using Raycasting

I am trying to make a top down view game in java using the Slick2d library, for lighting I wanted to do something like this : http://www.redblobgames.com/articles/visibility/. I was wondering if there ...
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38 views

Java delaying commands in a method with time (Sys.getTime)

LWJGL 2.9.3 and Slick2D Hello, so Im making this game and its going quite well, but I cant figure this out: Ive got a 2d tile based map (wich is stored in a 2d array) and each tile has a coresponding ...
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1answer
80 views

Getting the tile over wich the mouse cursor is

Im making a tilebased game, I have the rendering, the main engine, everything setup nicely (btw Im using LWJGL and Slick). Now this is more of a math question. How do I get the tile the mouse is on, ...
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1answer
105 views

How to map texture to shape in Slick 2D

I need to map texture to shape. Texture: This is a example of shapes I need to map texture to: Notice that each piece in mesh has exactly 4 point to map texture. Logic is pretty straight ...
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1answer
99 views

Use Slick2D for standard application instead of game

I was wondering how well Slick2D would work when used for a custom rendered GUI in a standard application? A standard application not being a game. More like a text editor or 2D level editor that ...
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0answers
1k views

Slick2D v LibGDX: [closed]

Okay. You might have seen some of these posts on forums here and there, but I wanted to ask this here mainly because everyone here is focused on game-dev and there seems to be quite a few Java ...
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0answers
91 views

java slick2d - gettileproperty returns true when it shouldn't [closed]

I'm trying to implement some collision detection to a test game i've been making. I've used TiledMap to create the map and set a property on one of the tiles to blocked=true This tile is then drawn on ...
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0answers
99 views

Slick - create new texture from part of existing texture

Say I have the following image: I want to resize this texture, so I can have resizable buttons with a texture. Now, as you can't repeat a certain area of an image in OpenGL, I have to create a new ...
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0answers
198 views

Slick2d font rendering makes all other drawings vanish

I'm converting a java game to lwjgl and slick-utils. I've followed the slick2d examples for font loading/rendering but I found that the font shows as a solid box of color unless I add the following ...
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1answer
846 views

Including slick2d or slick-util in maven build? [closed]

I'm converting a project to lwjgl and trying to use slick-util as well. There's no slick-util maven repo anywhere (nor slick2d itself anymore). I've included local dependancies before using ...
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1answer
173 views

(Java + Slick) How to rotate the Graphics (g) around the X-Axis?

I already tried it by using GL11.glRotatef(45, 1, 0, 0), but the result looks like this:
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1answer
466 views

Slick2D : translate -> scale -> translate doesn't return to the old position

I am trying to implement zoom using Slick2D library. As I understand, to zoom something on non (0,0) coordinates, we need: translate so the target point is in (0,0) apply scale factor translate the ...
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0answers
207 views

Steering behaviour [closed]

So I found this steering behaviour code in a book but i dont really understand the last part of the code what exactly is he doing because im unfamiliar with c++. Why would you need to ...
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0answers
654 views

Why won't my Box2d bodies collide? [closed]

I'm doing something wrong when trying to get bodies to collide using jBox2d & Slick2d. Here is have just my basic init, update, and render methods. Render and update seem to work fine for drawing ...
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1answer
4k views

Rotation of images in Slick2D

I have have a rotation problem in the Slick2d library, the image is just not rotating (ie I set a rotation but no result is shown). Here is the rotation code: if (input.IsKeyDown(Input.KEY_LEFT)) { ...
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5answers
527 views

Limiting a player's movement to the screen's dimensions

I have a player, that I can control using WASD. And I don't want him to leave the screen. So I've tried the following: if (player1.getX()+5 < 974 && player1.getX()-5 > 0) { ...
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1answer
175 views

Java Slick2d particles error [closed]

When i run the game particles crash the game, im not sure what am i doing wrong because the program doesnt tell me. But i know particles are causing this , if i remove the code in update code at ...
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2answers
915 views

deciding user movement path - slick 2D

i'm going to describe what need to be done... "there are circular areas marked in a map, large areas a person can easily move in to them and out of them" what i'm trying to do is deciding weather the ...
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1answer
132 views

Why does my character move up forever when he jumps with this code?

I've been doing some stupid stuff in Slick2D+LWJGL and I've run into a problem. I press the UP arrow and my character continues to go up until I let go :/ Here's the code: if ...
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2answers
229 views

Slick2D: constructor vs. init method

What is the difference between the constructor of a BasicGameState and the init method? It appears that they are both called at the same time when the BasicGameState is registered in StateBasedGame, ...
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1answer
99 views

Follow behavior with randomization factor

I'm trying to make enemy follow player as in picture below, the code below is code for following player with steering behavior ( i'm not sure it steering works tho but it does follow player ), how ...
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1answer
2k views

Interpolating a player between two 2D points?

I would like a player to be able to move in a direction smoothly, whilst sticking to a fixed grid. Much like in Pokemon, how the player can move, but when the key is pressed and released quickly, they ...
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2answers
95 views

Checking bounds of a quad

I want to know how would I tell if a quad touches another quad in my game built in Slick2D. I have a class that I named "Bounds" which has 4 "Point" objects which just store an X and a Y value and a ...
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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!
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1answer
2k views

How to implement HUD

I'm wondering how one could implement an HUD in LWJGL. I've seen tutorials on this, but they don't seem to work. I know the basic structure goes like this: init3d(); // 3d code init2d(); // HUD To ...
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1answer
53 views

Java 2d topdown collision

Im making a game and Im working on the collision. First Ill tell you what I want (Ill put in pictures), then Ill leave the code. What I want: I want the player to stop exactly before its collision ...
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1answer
541 views

LWJGL/Java - Implementing a writeable text box?

I would like to create a writeable text box where a user can input text into it. A nice "send" button that the person could click to send the text to the server would also be nice. I currently haven ...
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3answers
588 views

Tile Map World Background

I am making a 2D top-down game in Java using the Slick2D library. However, this question applies to all ways of making games of this nature. My question is: How would I do a background for the world. ...
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1answer
956 views

Slick2D and Nifty GUI

I am currently trying to combine both slick2d and nifty to work together. I've had some amount of success - I can now actually run my test and it won't crash. As far as I can tell, it will also ...
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1answer
256 views

How can I compute the average color of a texture?

I'm making a mini-map system for my tile based game, and I thought the best way to accomplish this would be the following: At the beginning of the game, I calculate the predominant color of every ...
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1answer
75 views

Hiding pixels inside a Shape

I have a player wich is a png image and I want a part of him to be able to go behind things, so I need to know how to hide pixels that are inside of a shape
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1answer
740 views

Box2D and Slick2D: Graphics bug [closed]

The bug The physics ground represented by a horizontal line. The object is stationary, and seems to be pretending that the ground is lower. This is because the center of the Shape is incorrectly ...
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2answers
3k views

SpriteSheet in slick2d or lwjgl

import java.awt.image.BufferedImage; import java.io.IOException; import javax.imageio.ImageIO; public class SpriteSheet { private String path; public final int SIZE; public int[] pixels; ...
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1answer
112 views

Menu selection wont stay on selected option

My Menu has a START and a QUIT option. I'm using a controller's D-PAD for selection. The game begins with START highlighted. When I push the down button on the D-PAD, it highlights the QUIT option. ...
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1answer
832 views

Java - Finding distance between player and tile in array

What is the best way performance wise to do this? When I click a tile I want it to get the distance and if I am close enough I can interact with the tile. One way would be to find the tile by doing ...
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2answers
2k views

Resource not found: testdata/alphamap.png

I started a tutorial for java's slick 2d library, called SlickBlocks which is essentally a tetris clone. The problem is I have followed and typed in the code examples to the dot, yet when I run it I ...
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1answer
76 views

Good Resources for Random World Generation [closed]

Is there a good reference or tutorials available for adding world generation into a 2D game? I've gotten to the point where I have most of the resources available to add world generation but I don't ...
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1answer
55 views

Rectangle moves faster to the left than to the right

I am using Slick2d to create a top-down game, however an rectangle than I am drawing to the display is moving faster to the left than to the right, and faster up than down. I am updating frames like ...
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2answers
51 views

LWJGL True Type Fonts - Calculate width and height of box

I want to center some text on the screen. At the moment I divide the display height and width by two, and then render. But I also need the height and width of the textbox, so I can subtract it from ...
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1answer
113 views

Collision bug with gravity in slick2D

I have fixed some of the previous problem. The collision when running into a corner(a wall on two sides) however is still not working. When the player runs into a corner he just falls down and out of ...