Tagged Questions

-1
votes
1answer
91 views

Creating 2D game engine, image = null error [closed]

When ever I run this, I get the error Exception in thread "main" java.lang.IllegalArgumentException: input == null! I tried many different solutions including moving parts of the code around and ...
0
votes
0answers
91 views

Removing image background color?

I have a sprite sheet (image) and I want to draw it on the screen. image = sprite sheet image x = player x position y = player y position width = player width height = player height public class ...
1
vote
2answers
236 views

Why cant I use slick-util with image IO and bufferedImage

My problem is that I get errors when I use texture = TextureLoader.getTexture("PNG", ResourceLoader.getResourceAsStream("TEXTURE PATH HERE")); it gives me these errors: Exception in thread "main" ...
4
votes
4answers
380 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 ...
-1
votes
1answer
127 views

How do I increase the size of a buffered image to the left and upwards?

I need to know how to increase the size of my buffered image to the left and up, not just the right and down. bI = new BufferedImage(yMax*size*5, xMax*size*5, BufferedImage.TYPE_INT_RGB);
-2
votes
2answers
275 views

how to double buffer in multiple classes with java

I am creating a Java 2D video game. I can load graphics just fine, but when it gets into double buffering I have issues. If i run this code, nothing is displayed except for the string("hello"); but ...
0
votes
1answer
217 views

How to select an image on the J2ME Canvas

I am working on J2ME. I have got a canvas, with a layout of a Checkers board. At the position of pieces, I have placed images. The point at which I got stuck is, how to select/highlite a piece's image ...
1
vote
2answers
562 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 ...
2
votes
1answer
366 views

How can I resize a set of sprite images?

Hey StackExchange GameDev community, I'm attempting to resize series of sprites upon instantiation of the class they're located in. I've attempted to use the following code to resize the images, ...
1
vote
1answer
488 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.
1
vote
2answers
656 views

How do I set a single pixel of an image in Slick2D?

I would like to set an individual pixel in Slick (i.e Image.setPixel(x, y, r, b, g)) but I can't figure out how. There is an Image.setPixel function but it doesn't take x and y coordinates. Any ...
1
vote
1answer
1k views

Moving an image by rotating and increasing y axis causes a trailing issue

Forgive me if me anything is unclear, this is a tricky thing for me to explain. In an applet I draw a little ship gif. I have it so I can rotate the object and then increase or decrease the y axis to ...
2
votes
1answer
153 views

Can I use one set of images to represent multiple sprites in Java?

I've got a game that has 3 basic sprites, at the moment I'm loading 8 images into each sprite for animating. Each character class has a sprite object. if I've got 10 characters on screen at once ...