Texture packer and 2d game sprite sheet creation

Question

I am developing a game in Unity3D. I have a bunch of images which display the character animations. I decided to use texture packer to reduce the amount of individual images. I create one sprite sheet with type multiple containing all the images of my animation.

After creating the sprite sheet the animation broke up. The images start to overlap and not animate in the same speed despite the fact that before the animation was working fine but heavy on my app.

The spritesheet was created by importing all my assets for every animation into texture packer and export it into png file with a dimension of: 4096x4096

Answer 1

Unity needs some way of "finding" the animation frames in the sprite sheet. What you currently see is that this information is not property provided.

There are several ways to set this up. The easiest way is to use TexturePacker Importer. It reads a data file provided by TexturePacker and slices the sprite sheets. Here's a micro tutorial.

Another way would be to create all frames with identical sizes and tell Unity how big they are. Or use some 3rd party framework like 2dtoolkit ...

So which way are you using to import the data?

Btw. 4096x4096 might give you trouble on several platforms. While this might not be your current problem it has a good change to result in jittering animations due to limitations in floating point precision in OpenGL. I would really recommend using 2048 or smaller sprite sheets.