I am relatively new to Minecraft modding so I decided to create a custom enchantment. I have looked over several tutorials and they do show how to create an enchantment and apply it to a custom items, but I want my enchantment to be applied to the standard Minecraft items. Does anyone know how I would go about doing this or if there is a guide/tutorial that describes this?

That worked and I can enable it for specific items, but now I have two more questions; how would I apply it to a group of items(i.e. all helmets) and where do I put the code that makes the enchantment actually do something?

Probably use events to make it do something. For helmets, check if it's an instance of itemarmor and if the armor type is 0.

I know about the onArmorTick event, but I can't put that in a class that extends Enchantment. I did check for an instance of ItemArmor, but I don't know how to compare that instance's armorType value.

Post the enchantment class.

I did manage to get it to find the armorType value, still don't know about the event.

package com.twreck.stride;

import net.minecraft.enchantment.Enchantment;
import net.minecraft.enchantment.EnumEnchantmentType;
import net.minecraft.init.Items;
import net.minecraft.item.ItemArmor;
import net.minecraft.item.ItemStack;

public class EnchantmentStride extends Enchantment {
public EnchantmentStride(int id, int rarity) {
	super(id, rarity, EnumEnchantmentType.armor_feet);
	this.setName("Stride");
}
public int getMinEnchantability(int par1) {
	return 5 + (par1 - 1) * 10;
}
public int getMaxEnchantability(int par1) {
	return this.getMinEnchantability(par1) + 20;
}
public int getMaxLevel() {
	return 3;
}
@Override
public boolean canApply(ItemStack stack){
	return stack.getItem() instanceof ItemArmor && ((ItemArmor)stack.getItem()).armorType == 3 ? true : super.canApply(stack);
}
}

For the effects, use a PlayerTickEvent that checks for the item in the player's boots slot (in this case). There should be some method to get the items enchantments. What effect do you want the enchantment to have?

For right now I was going to apply a speed  boost effect.

Then you would use event.player.addPotionEffect

What class is PlayerTickEvent in?

Make a new class to put it in. Look up a Forge event tutorial. Here's the one I use for armor full sets: https://github.com/Eternaldoom/Realms-of-Chaos/blob/master/com/eternaldoom/realmsofchaos/event/ArmorBonusEvent.java

 

You use the SubscribeEvent annotation and register the event in your main class.

I managed to get it working by following this tutorial: www.youtube.com/watch?v=siiEYV2pXE0

I didn't see that there was a follow up video to the previous one.