Add simple JEI integration

 - Ensure pocket computers and turtles are distinguished by upgrades and
   computer family.
 - Ensure disks are distinguished by colour.
 - Hide treasure disks from the list

build.gradle

@@ -41,28 +41,16 @@ minecraft {
    // makeObfSourceJar = false // an Srg named sources jar is made by default. uncomment this to disable.
}

dependencies {
    // you may put jars on which you depend on in ./libs
    // or you may define them like so..
    //compile "some.group:artifact:version:classifier"
    //compile "some.group:artifact:version"

    // real examples
    //compile 'com.mod-buildcraft:buildcraft:6.0.8:dev'  // adds buildcraft to the dev env
    //compile 'com.googlecode.efficient-java-matrix-library:ejml:0.24' // adds ejml to the dev env

    // the 'provided' configuration is for optional dependencies that exist at compile-time but might not at runtime.
    //provided 'com.mod-buildcraft:buildcraft:6.0.8:dev'

    // the deobf configurations:  'deobfCompile' and 'deobfProvided' are the same as the normal compile and provided,
    // except that these dependencies get remapped to your current MCP mappings
    //deobfCompile 'com.mod-buildcraft:buildcraft:6.0.8:dev'
    //deobfProvided 'com.mod-buildcraft:buildcraft:6.0.8:dev'

    // for more info...
    // http://www.gradle.org/docs/current/userguide/artifact_dependencies_tutorial.html
    // http://www.gradle.org/docs/current/userguide/dependency_management.html
repositories {
    maven {
        name = "JEI"
        url  = "http://dvs1.progwml6.com/files/maven" 
    }
}

dependencies {
    deobfProvided "mezz.jei:jei_1.12:4.7.5.86:api"
    runtime "mezz.jei:jei_1.12:4.7.5.86"
}

jar {

src/main/java/dan200/computercraft/shared/integration/JEIComputerCraft.java

@@ -0,0 +1,99 @@
package dan200.computercraft.shared.integration;

import dan200.computercraft.ComputerCraft;
import dan200.computercraft.api.pocket.IPocketUpgrade;
import dan200.computercraft.api.turtle.ITurtleUpgrade;
import dan200.computercraft.api.turtle.TurtleSide;
import dan200.computercraft.shared.media.items.ItemDiskLegacy;
import dan200.computercraft.shared.pocket.items.ItemPocketComputer;
import dan200.computercraft.shared.turtle.items.ITurtleItem;
import mezz.jei.api.IModPlugin;
import mezz.jei.api.IModRegistry;
import mezz.jei.api.ISubtypeRegistry;
import mezz.jei.api.ISubtypeRegistry.ISubtypeInterpreter;
import mezz.jei.api.JEIPlugin;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraftforge.oredict.OreDictionary;

@JEIPlugin
public class JEIComputerCraft implements IModPlugin
{
    @Override
    public void registerItemSubtypes( ISubtypeRegistry subtypeRegistry )
    {
        subtypeRegistry.registerSubtypeInterpreter( Item.getItemFromBlock( ComputerCraft.Blocks.turtle ), turtleSubtype );
        subtypeRegistry.registerSubtypeInterpreter( Item.getItemFromBlock( ComputerCraft.Blocks.turtleExpanded ), turtleSubtype );
        subtypeRegistry.registerSubtypeInterpreter( Item.getItemFromBlock( ComputerCraft.Blocks.turtleAdvanced ), turtleSubtype );

        subtypeRegistry.registerSubtypeInterpreter( ComputerCraft.Items.pocketComputer, pocketSubtype );

        subtypeRegistry.registerSubtypeInterpreter( ComputerCraft.Items.disk, diskSubtype );
        subtypeRegistry.registerSubtypeInterpreter( ComputerCraft.Items.diskExpanded, diskSubtype );
    }

    @Override
    public void register( IModRegistry registry )
    {
        // Hide treasure disks from the ingredient list
        registry.getJeiHelpers().getIngredientBlacklist()
            .addIngredientToBlacklist( new ItemStack( ComputerCraft.Items.treasureDisk, OreDictionary.WILDCARD_VALUE ) );
    }

    /**
     * Distinguishes turtles by upgrades and family
     */
    private static final ISubtypeInterpreter turtleSubtype = stack -> {
        Item item = stack.getItem();
        if( !(item instanceof ITurtleItem) ) return "";

        ITurtleItem turtle = (ITurtleItem) item;
        StringBuilder name = new StringBuilder();

        name.append( turtle.getFamily( stack ).toString() );

        // Add left and right upgrades to the identifier
        ITurtleUpgrade left = turtle.getUpgrade( stack, TurtleSide.Left );
        name.append( '|' );
        if( left != null ) name.append( left.getUpgradeID() );

        ITurtleUpgrade right = turtle.getUpgrade( stack, TurtleSide.Right );
        name.append( '|' );
        if( right != null ) name.append( '|' ).append( right.getUpgradeID() );

        return name.toString();
    };

    /**
     * Distinguishes pocket computers by upgrade and family
     */
    private static final ISubtypeInterpreter pocketSubtype = stack -> {
        Item item = stack.getItem();
        if( !(item instanceof ItemPocketComputer) ) return "";

        ItemPocketComputer pocket = (ItemPocketComputer) item;
        StringBuilder name = new StringBuilder();

        name.append( pocket.getFamily( stack ).toString() );

        // Add the upgrade to the identifier
        IPocketUpgrade upgrade = pocket.getUpgrade( stack );
        name.append( '|' );
        if( upgrade != null ) name.append( upgrade.getUpgradeID() );

        return name.toString();
    };

    /**
     * Distinguishes disks by colour
     */
    private static final ISubtypeInterpreter diskSubtype = stack -> {
        Item item = stack.getItem();
        if( !(item instanceof ItemDiskLegacy) ) return "";

        ItemDiskLegacy disk = (ItemDiskLegacy) item;

        int colour = disk.getColour( stack );
        return colour == -1 ? "" : String.format( "%06x", colour );
    };
}