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

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1answer
153 views

Rotate an image in a scaled context

Here is my working piece of code to rotate an image toward a point (in my case, the mouse cursor). float dx = newx - ploc.x; float dy = newy - ploc.y; float angle = (float) ...
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1answer
73 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(); ...
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1answer
138 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 ...
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2answers
770 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 ...
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1answer
214 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 ...
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1answer
809 views

How to remove the FPS text on slick2d?

How do I remove the frame rate text on the upper left corner?
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1answer
903 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++) { ...
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1answer
413 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
171 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; ...
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1answer
147 views

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

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?
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2answers
1k 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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2answers
538 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 ...
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2answers
93 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 ...
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2answers
4k 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 ...
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1answer
500 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 ...
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2answers
164 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 ...
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1answer
328 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 ...
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1answer
863 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.
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2answers
136 views

How do I add Destroy with radius on Java Slick2d? [closed]

For Example, There is a tree(image) and i want to destroy it. I want my character only destroy it (For example the character must be facing the tree to destroy it and there must be a range were you ...
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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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1answer
83 views

Variable Visibility Class Interaction

I have a very general question about how game classes interact with eachother in a growing RPG game project I'm working on. (Writing it in java/Slick2D, not that is matters because the question is ...
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1answer
106 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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3answers
970 views

How do you make bullets move at an angle in different angles using delta

I'm having trouble making my bullets move at a steady pace using delta. I have the formula I used outside of slick2d, but it doesn't take delta into account. My bullets fly fast. How do I make them go ...
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3answers
1k views

How to efficiently manage animations and/or textures (resources) in a game?

I am using Java, particularly the Slick2D library. Seeing as this is my first game, I have no idea how I should manage the Animations and the textures in the game in a way to be both memory efficient ...
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1answer
1k views

How can I accomplish Pokemon-style movement over tiles in java?

I'm talking about where if you press a directional key once you walk over to the adjacent tile and can't do any other actions during the walk. I can get my character to move one tile width, but my ...
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1answer
228 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
2k views

Vector movement in space type game (Mouse rotation)

I'm having an issue with my movement in my 'game' prototype. It's basically not working and admittedly my knowledge with vectors is lacking. The issue I'm running into is that the ship won't move in ...
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3answers
159 views

Positioning entities in adjacent maps

Say I have a 2D tile based game engine (I don't, but I will soon). I was wondering how I would manage drawing adjacent maps. That is, imagine we have a map that is 50 by 50 tiles wide. Then next to ...
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2answers
1k views

How to get smooth transition within slick?

When a player clicks start, my app immediately switches to the first level. My question is how do I incorporate a smooth transition within Slick?
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1answer
2k 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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1answer
912 views

Slick2D: Changing an Image's colour to Color.white

I am working on a game where we would like the enemies to flash white when hit by a bullet. Ideally, we would like to use the same mechanism to render an Image in any colour. Our Images are all png ...
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2answers
369 views

Are my programming methods for java games sufficient

so I'm making a 2d Java game with the slick2d and MarteEngine libraries. This is the biggest project since I made checkers for my Java class. I am still pretty new to programming concepts and using ...
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1answer
520 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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5answers
1k 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
1k views

Slick2D - Cannot instantiate the type Image

I am getting this strange error and I cannot for the life of me figure out why: Cannot instantiate the type Image CODE: import java.awt.Image; import org.newdawn.slick.GameContainer; import ...
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1answer
341 views

Texture switching with a entity system

I'm using thinking of using an entity system in my game. So far I've been using Artemis with success. However, I have a question about texture switching. I read that switching textures too often is ...
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2answers
1k views

how should I network my turn based game?

I'm writing a very basic turn based strategy game which allows a player to select units and attack enemy units on their turn. The game is written in Java using the slick2d library and I plan to use ...
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1answer
179 views

Issues with networking in my Java game, Client crashes when I try and read from the server input

A buddy and I have been programming a code game over the last 2 weeks, it is intended to be a multiplayer game with the ability to have 2 players play against each other. I am running into an issue ...
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2answers
2k views

Pass information between states in slick 2d?

I am making simple game in java using Slick 2d. My question is how many ways of passing information between states are available in Slick 2d. I am having a Hero class that holds all the hero stats and ...
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2answers
2k views

Dynamically load images inside jar

I'm using Slick2d for a game, and while it runs fine in Eclipse, i'm trying to figure out how to make it work when exported to a runnable .jar. I have it set up to where I load every image located in ...
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votes
1answer
1k views

With Slick, how to change the resolution during gameplay?

I am developing a tile-based strategy game using Java and the Slick API. So far so good, but I've come to a standstill on my options menu. I have plans for the user to be able to change the ...
3
votes
3answers
4k views

How to render axometric/isometric tiles that are a 2d array in logic, but inclined 45º visually?

I am making a tile-based strategy game which i plan to have 2.5D visuals in an axometric/isometric fashion. Right now i'm programming it's logic and rendering it as a literal 2-dimensional array ...
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2answers
1k views

Adding a short delay between bullets

I'm having some trouble simulating bullets in my 2D shooter. I want similar mechanics to Megaman, where the user can hold down the shoot button and a continues stream of bullets are fired but with a ...
2
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1answer
559 views

How to load chunks of 2d map segments when player reaches a certain point?

In my 2d platformer (made with Java and Slick2d), random maps are made by combining different segments together and displaying them one after the other. My problem is that I can't load too many ...
2
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5answers
818 views

Add delay between player jumps

I'm developing a platformer game and have implemented jumping for the player. The player is able to jump, but holding the up arrow causes the player to continuously jump. What would be the best way to ...
4
votes
1answer
1k views

Create the right pom.xml for LWJGL and Slick Project (Maven)

can somebody tell me whats wrong with my pom.xml file? At this point i get this error if i start my *.jar file: C:\Users\Michael\git\freezing-robot\target>java -jar ...
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3answers
434 views

For the handling of buildings on a tile-based strategy game, what aproach should I use?

On a tile-based game of the strategy genre, which allows the player to place buildings over the terrain tiles, there are multiple approaches that can be taken for handling such situation. The ones ...
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1answer
1k 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
254 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 ...
2
votes
2answers
391 views

Snake game - collision detection causing new position of apple to be rendered multiple times

I have a collision method implemented through the use of slick2d. When ever the snake collides with the apple, it causes the apple to be rendered in multiple places before the snake moves further ...