How do I add a item with multi-layer textures, basically like spawn eggs?

Layers need to be different colors

If your item model extends

builtin/generated

(either directly or indirectly through a model like

item/generated

), you can simply specify the

layer0

to

layerN

textures (where

N

is some non-negative number) and the model will be generated using those textures.

 

If you register an

IItemColor

for the

Item

, the

tintIndex

argument will be the layer number.

Since I'm such a noob, can you provide an example json file?

 

and, where do I register IItemColor in the class?

Since I'm such a noob, can you provide an example json file?

Look at pretty much any vanilla item model, e.g. the spawn egg. Almost all of them extend

builtin/generated

.

 

and, where do I register IItemColor in the class?

Use

Minecraft#getBlockColors

/

getItemColors

to get the

BlockColors

/

ItemColors

instances and

BlockColors#registerBlockColorHandler

/

ItemColors#registerItemColorHandler

to register an

IBlockColor

/

IItemColor

.

 

This must be done in the init phase from your client proxy.

 

You can see an example of this here.

Look at pretty much any vanilla item model, e.g. the spawn egg. Almost all of them extend

builtin/generated

.

 

In 1.9 it has changed to

item/generated

which includes the default transformations.