BloodMagic/src/main/java/WayofTime/bloodmagic/item/ItemBoundShovel.java

package WayofTime.bloodmagic.item;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import net.minecraft.block.Block;
import net.minecraft.block.state.IBlockState;
import net.minecraft.client.renderer.ItemMeshDefinition;
import net.minecraft.enchantment.EnchantmentHelper;
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.init.Blocks;
import net.minecraft.init.Enchantments;
import net.minecraft.inventory.EntityEquipmentSlot;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.World;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.world.BlockEvent;
import net.minecraftforge.fml.common.eventhandler.Event;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;
import WayofTime.bloodmagic.api.BlockStack;
import WayofTime.bloodmagic.api.ItemStackWrapper;
import WayofTime.bloodmagic.api.util.helper.NetworkHelper;
import WayofTime.bloodmagic.client.IMeshProvider;
import WayofTime.bloodmagic.client.mesh.CustomMeshDefinitionActivatable;

import com.google.common.collect.HashMultiset;
import com.google.common.collect.Multimap;
import com.google.common.collect.Sets;

import javax.annotation.Nullable;

public class ItemBoundShovel extends ItemBoundTool implements IMeshProvider
{
    private static final Set<Block> EFFECTIVE_ON = Sets.newHashSet(Blocks.clay, Blocks.dirt, Blocks.farmland, Blocks.grass, Blocks.gravel, Blocks.mycelium, Blocks.sand, Blocks.snow, Blocks.snow_layer, Blocks.soul_sand);

    public ItemBoundShovel()
    {
        super("shovel", 1, EFFECTIVE_ON);
    }

    @Override
    public boolean hitEntity(ItemStack stack, EntityLivingBase target, EntityLivingBase attacker)
    {
        return true;
    }

    @Override
    public boolean onBlockDestroyed(ItemStack stack, World world, IBlockState block, BlockPos pos, EntityLivingBase entityLiving)
    {
        return true;
    }

    @Override
    protected void onBoundRelease(ItemStack stack, World world, EntityPlayer player, int charge)
    {
        if (world.isRemote)
            return;

        boolean silkTouch = EnchantmentHelper.getEnchantmentLevel(Enchantments.silkTouch, stack) > 0;
        int fortuneLvl = EnchantmentHelper.getEnchantmentLevel(Enchantments.fortune, stack);
        int range = (int) (charge / 6); //Charge is a max of 30 - want 5 to be the max

        HashMultiset<ItemStackWrapper> drops = HashMultiset.create();

        BlockPos playerPos = player.getPosition();

        for (int i = -range; i <= range; i++)
        {
            for (int j = 0; j <= 2 * range; j++)
            {
                for (int k = -range; k <= range; k++)
                {
                    BlockPos blockPos = playerPos.add(i, j, k);
                    BlockStack blockStack = BlockStack.getStackFromPos(world, blockPos);

                    if (blockStack.getBlock().isAir(blockStack.getState(), world, blockPos))
                        continue;

                    BlockEvent.BreakEvent event = new BlockEvent.BreakEvent(world, blockPos, blockStack.getState(), player);
                    if (MinecraftForge.EVENT_BUS.post(event) || event.getResult() == Event.Result.DENY)
                        continue;

                    if (blockStack.getBlock() != null && blockStack.getBlock().getBlockHardness(blockStack.getState(), world, blockPos) != -1)
                    {
                        float strengthVsBlock = getStrVsBlock(stack, blockStack.getState());

                        if (strengthVsBlock > 1.1F && world.canMineBlockBody(player, blockPos))
                        {
                            if (silkTouch && blockStack.getBlock().canSilkHarvest(world, blockPos, world.getBlockState(blockPos), player))
                                drops.add(new ItemStackWrapper(blockStack));
                            else
                            {
                                List<ItemStack> itemDrops = blockStack.getBlock().getDrops(world, blockPos, world.getBlockState(blockPos), fortuneLvl);

                                if (itemDrops != null)
                                    for (ItemStack stacks : itemDrops)
                                        drops.add(ItemStackWrapper.getHolder(stacks));
                            }

                            world.setBlockToAir(blockPos);
                        }
                    }
                }
            }
        }

        NetworkHelper.getSoulNetwork(player).syphonAndDamage(player, (int) (charge * charge * charge / 2.7));
        world.createExplosion(player, playerPos.getX(), playerPos.getY(), playerPos.getZ(), 0.5F, false);
        dropStacks(drops, world, playerPos.add(0, 1, 0));
    }

    @Override
    public Multimap<String, AttributeModifier> getItemAttributeModifiers(EntityEquipmentSlot equipmentSlot)
    {
        Multimap<String, AttributeModifier> multimap = super.getItemAttributeModifiers(equipmentSlot);
        if (equipmentSlot == EntityEquipmentSlot.MAINHAND)
        {
            multimap.put(SharedMonsterAttributes.ATTACK_DAMAGE.getAttributeUnlocalizedName(), new AttributeModifier(ATTACK_DAMAGE_MODIFIER, "Weapon modifier", 1, 0));
            multimap.put(SharedMonsterAttributes.ATTACK_SPEED.getAttributeUnlocalizedName(), new AttributeModifier(ATTACK_SPEED_MODIFIER, "Tool modifier", -2.5, 0));
        }
        return multimap;
    }

    @Override
    @SideOnly(Side.CLIENT)
    public ItemMeshDefinition getMeshDefinition()
    {
        return new CustomMeshDefinitionActivatable("ItemBoundShovel");
    }

    @Nullable
    @Override
    public ResourceLocation getCustomLocation()
    {
        return null;
    }

    @Override
    public List<String> getVariants()
    {
        List<String> ret = new ArrayList<String>();
        ret.add("active=true");
        ret.add("active=false");
        return ret;
    }
}