[1.8] Making parts of a gui animate

[Aidas1000]

After making 2 posts for my custom crafting table, here comes a third one. As the titles says I'm trying to animate few parts of a gui. I am not making something advanced, just some lights changing color. I tried making an mcmeta file. Seems to work only for 16x16 textures, because it squished my gui .

[Draco18s]

Gui textures don't work the same as block textures with the .meta file (it has nothing to do with 16x16: block textures absolutely must be square, so a non-square texture then must be a series of animated frames).

 

Guis are rendered manually as quads drawn directly on the screen, so in order to animate it, you need to manually select different parts of a large texture, or change to a different texture, each time you draw the gui.