e.g. Namespaced IDs in blockstates and models.

Warn Useless File:

• assets/minecraft/textures/items/clock.png.mcmeta

If model minecraft:item/clock doesn't exist

Split texture minecraft:items/clock.

Else

Split model minecraft:item/clock and the texture defined in it.

The new PathAdapter should still provide methods to change paths (or we call the namespaced strings) of specific files.

The new PathAdapterOptions should be like this:

interface PathAdapterOptions {
    operations: {
        filter: FileFilter,
        set: string
    }[]
}

class FileFilter {
    constructor(
        private readonly type: string,
        private readonly namespacedIDs: RegExp[],
        private readonly extensions: string[]
    ) { }

    public test() {
        throw new Error('Method not implemented.')
    }
}

So now we can change the previous PathAdapter constructions defined in conversions to this:

new PathAdapter({
    operations: [
            filter: new FileFilter('textures', [/^minecraft:items\/fish_raw$/], ['png', 'png.mcmeta']),
            set: 'minecraft:items/fish_cod_raw'
        }
    ]
})

When a conversion begin, get an object called whole containing all blockstates and models.

Then, run adapter factories to get adapters. An adapter factory will return adapter(s) according to the whole. Adapters provided by adapter factories will be appended in the adapters filed of the conversion.

e.g. The ClockAdapterFactory will return an ClockAdapter which will split specfic textute defined in model minecraft:item/clock.

Warn Useless Files:

• assets/minecraft/models/item/compass.json
• assets/minecraft/textures/items/compass.png.mcmeta

Split Files:

• assets/minecraft/textures/items/compass.png to /minecraft/textures/items/compass_${x}.png.

See also: #9

It will also be great to generate human-readable documents about what an adapter does.

Combine models to a simple model for hences, glass panes, etc.

We have changed PathAdapter before in #7, but that's incompleted. Since models were introduced in JE1.8 and blockstates were introduced in JE1.9, the namespaced IDs of textures are not fixed anymore.

In JE1.8, models determine the namespaced IDs of textures. In JE1.9, blockstates determine the namespaced IDs of block models.

So when wiring the conversion of JE1.8 into JE1.9, what we should do is not to change textures locations, but to change the locations of models accordingly. Only if the model is omitted in the resource pack, we should apply the changes of models in vanilla resource pack to the textures.

So, don't split texture minecraft:items/clock hardcodely, but to split textures defined in model minecraft:item/clock. To implement this, we need an object like this:

{
    "models": {
        "minecraft:item/clock": {
            "parent": "builtin/clock",
            "textures": {
                "...": "....."
            }
        },
       "...": {}
    }
}

And we merge the model definitions in input resource pack (identified with "RPC$isReplaced": true) with the object. At last we find out the specific model, check if the parent is set to builtin/clock, get the namespaced ID of clock texture, split textures (and models if RPC$isReplaced).