MaterialItem.java

package slimeknights.tconstruct.library.tinkering;

import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;

import java.util.List;

import javax.annotation.Nonnull;

import slimeknights.tconstruct.common.config.Config;
import slimeknights.tconstruct.library.TinkerRegistry;
import slimeknights.tconstruct.library.materials.Material;
import slimeknights.tconstruct.library.utils.TagUtil;
import slimeknights.tconstruct.library.utils.Tags;

/**
 * Represents an item that has a Material associated with it. The metadata of an itemstack identifies which material the
 * itemstack of this item has.
 */
public class MaterialItem extends Item implements IMaterialItem {

  public MaterialItem() {
    this.setHasSubtypes(true);
  }

  @Override
  public void getSubItems(@Nonnull Item itemIn, CreativeTabs tab, List<ItemStack> subItems) {
    // this adds a variant of each material to the creative menu
    for(Material mat : TinkerRegistry.getAllMaterials()) {
      subItems.add(getItemstackWithMaterial(mat));
      if(!Config.listAllMaterials) {
        break;
      }
    }
  }

  @Override
  public String getMaterialID(ItemStack stack) {
    return getMaterial(stack).identifier;
  }

  @Override
  public Material getMaterial(ItemStack stack) {
    NBTTagCompound tag = TagUtil.getTagSafe(stack);

    return TinkerRegistry.getMaterial(tag.getString(Tags.PART_MATERIAL));
  }

  @Override
  public ItemStack getItemstackWithMaterial(Material material) {
    ItemStack stack = new ItemStack(this);
    NBTTagCompound tag = new NBTTagCompound();
    tag.setString(Tags.PART_MATERIAL, material.identifier);
    stack.setTagCompound(tag);

    return stack;
  }
}