ModCreative.java

package slimeknights.tconstruct.tools.modifiers;

import net.minecraft.nbt.NBTTagCompound;

import slimeknights.tconstruct.library.modifiers.Modifier;
import slimeknights.tconstruct.library.modifiers.ModifierNBT;
import slimeknights.tconstruct.library.utils.TagUtil;
import slimeknights.tconstruct.library.utils.Tags;

public class ModCreative extends Modifier {

  public ModCreative() {
    super("creative");
  }

  @Override
  public boolean isHidden() {
    return true;
  }

  @Override
  public void updateNBT(NBTTagCompound modifierTag) {
    // same as level aspect, but we don't have a restriction here
    ModifierNBT data = ModifierNBT.readTag(modifierTag);
    data.level++;
    data.write(modifierTag);
  }

  @Override
  public void applyEffect(NBTTagCompound rootCompound, NBTTagCompound modifierTag) {
    // substract the modifiers
    NBTTagCompound toolTag = TagUtil.getToolTag(rootCompound);
    ModifierNBT data = ModifierNBT.readTag(modifierTag);
    int modifiers = toolTag.getInteger(Tags.FREE_MODIFIERS) + data.level;
    toolTag.setInteger(Tags.FREE_MODIFIERS, Math.max(0, modifiers));
  }
}