I was testing the damage of my tools to entities, when i notice they where always where killed by one hit so i tested it with the wither, and...

 

well, better if you see it:

 

 

*.mp4

 

PD: That was Eclipse not Launcher

 

Does anyone knows why this is happening and how to solve it??

how about some code

it helps

Here is my code:

 

package com.sackcastellon.betterwood.item;

import java.util.List;
import java.util.Random;
import java.util.Set;

import net.minecraft.block.Block;
import net.minecraft.client.renderer.texture.IIconRegister;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.entity.ai.attributes.AttributeModifier;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.IIcon;
import net.minecraft.world.World;
import net.minecraftforge.common.ForgeHooks;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Multimap;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class NBT extends Item
{
private String toolClass = "pickaxe";
private Random random = new Random();

public NBT()
{
	super();

	this.setUnlocalizedName("nbt");
	this.setCreativeTab(CreativeTabs.tabBlock);
}

/**
 * Initialization of NBT Tags
 * @param item Total number of items based on NBT Tags
 * @return <b>ItemStack</b> The ItemStack with the proper NBT Tags
 */
private ItemStack getItemStack(int item)
{
	ItemStack itemStack = new ItemStack(this);

	itemStack.stackTagCompound = new NBTTagCompound();

	NBTTagCompound nbt = itemStack.getTagCompound();

	nbt.setString("info", "lore " + item);

	switch(item)
	{
	case 0:
		nbt.setFloat("EfficiencyOnProperMaterial", 2.0F);
		nbt.setInteger("Enchantability", 15);
		nbt.setString("ToolMaterial", "WOOD");
		nbt.setString("itemRepair", "wood");
		nbt.setFloat("damageVsEntity", 2.0F + 0.0F);
		nbt.setInteger("HarvestLevel", 0);
		nbt.setInteger("MaxDamage", 59);
		break;
	case 1:
		nbt.setFloat("EfficiencyOnProperMaterial", 4.0F);
		nbt.setInteger("Enchantability", 5);
		nbt.setString("ToolMaterial", "STONE");
		nbt.setString("itemRepair", "stone");
		nbt.setFloat("damageVsEntity", 2.0F + 1.0F);
		nbt.setInteger("HarvestLevel", 1);
		nbt.setInteger("MaxDamage", 131);
		break;
	case 2:
		nbt.setFloat("EfficiencyOnProperMaterial", 6.0F);
		nbt.setInteger("Enchantability", 14);
		nbt.setString("ToolMaterial", "IRON");
		nbt.setString("itemRepair", "iron");
		nbt.setFloat("damageVsEntity", 2.0F + 2.0F);
		nbt.setInteger("HarvestLevel", 2);
		nbt.setInteger("MaxDamage", 250);
		break;
	case 3:
		nbt.setFloat("EfficiencyOnProperMaterial", 8.0F);
		nbt.setInteger("Enchantability", 10);
		nbt.setString("ToolMaterial", "EMERALD");
		nbt.setString("itemRepair", "diamond");
		nbt.setFloat("damageVsEntity", 2.0F + 3.0F);
		nbt.setInteger("HarvestLevel", 3);
		nbt.setInteger("MaxDamage", 1561);
		break;
	default:
		break;
	}

	return itemStack;
}

/**
 * Add information based on NBT Tags<br>
 * <b>Tag:</b> "info"
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public void addInformation(ItemStack itemStack, EntityPlayer player, List list, boolean flag)
{
	if(itemStack.stackTagCompound != null)
	{
		if(itemStack.stackTagCompound.hasKey("info"))
		{
			list.add(itemStack.stackTagCompound.getString("info"));
		}

		if(itemStack.stackTagCompound.hasKey("id"))
		{
			list.add("ID is " + itemStack.stackTagCompound.getShort("id"));
		}
	}
}

/**
 * Sub items to be shown on Creative Tabs, based on NBT Tags<br>
 * Initialization of NBT Tags
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public void getSubItems(Item item, CreativeTabs tabs, List list)
{
	for(int i = 0; i < 4; ++i)
	{
		list.add(this.getItemStack(i));
	}
}

/**
 * Get maximum item damage based on NBT Tags<br>
 * <b>Tag:</b> "MaxDamage"
 */
@Override
public int getMaxDamage(ItemStack stack)
{
	return stack.stackTagCompound.getInteger("MaxDamage");
}

@Override
public boolean onBlockDestroyed(ItemStack stack, World world, Block block, int x, int y, int z, EntityLivingBase entity)
{
        if ((double)block.getBlockHardness(world, x, y, z) != 0.0D)
        {
            stack.damageItem(1, entity);
        }
        return true;
}

    /**
     * Returns True is the item is renderer in full 3D when hold.
     */
@Override
    @SideOnly(Side.CLIENT)
    public boolean isFull3D()
    {
        return true;
    }

@Override
public boolean getIsRepairable(ItemStack p_82789_1_, ItemStack p_82789_2_)
{
	// TODO
	return false;
}

@SuppressWarnings({ "unchecked", "rawtypes", "deprecation" })
@Override
public Multimap getAttributeModifiers(ItemStack stack)
{
        Multimap multimap = super.getItemAttributeModifiers();
        multimap.put(SharedMonsterAttributes.attackDamage.getAttributeUnlocalizedName(), new AttributeModifier(field_111210_e, "Tool modifier", (double)stack.stackTagCompound.getFloat("damageVsEntity"), 0));
        return multimap;
}

@Override
    public float getDigSpeed(ItemStack stack, Block block, int meta)
    {
        if (ForgeHooks.isToolEffective(stack, block, meta))
        {
            return 4.0F;
        }
        return super.getDigSpeed(stack, block, meta);
    }

    @Override
    public int getHarvestLevel(ItemStack stack, String toolClass)
    {
        int level = super.getHarvestLevel(stack, toolClass);
        if (level == -1 && toolClass != null && toolClass.equals(this.toolClass ))
        {
            return stack.stackTagCompound.getInteger("HarvestLevel");
        }
        else
        {
            return level;
        }
    }
    
    @Override
    public Set<String> getToolClasses(ItemStack stack)
    {
        return toolClass != null ? ImmutableSet.of(toolClass) : super.getToolClasses(stack);
    }
}

 

PD: This is the code of the "tools" i was testing.

PD2: I've notice that if i remove the method "getAttributeModifiers" the OP strength goes away, but then my tool have an item default damage to mobs 

*bump*