TinkersConstruct/src/main/java/tconstruct/library/tools/HarvestTool.java

package tconstruct.library.tools;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.client.Minecraft;
import net.minecraft.client.multiplayer.PlayerControllerMP;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.network.play.server.S23PacketBlockChange;
import net.minecraft.world.World;
import net.minecraftforge.common.ForgeHooks;
import tconstruct.TConstruct;

/* Base class for tools that should be harvesting blocks */

public abstract class HarvestTool extends ToolCore
{
    public HarvestTool(int baseDamage)
    {
        super(baseDamage);
    }

    @Override
    public boolean onBlockStartBreak (ItemStack stack, int x, int y, int z, EntityPlayer player)
    {
        return super.onBlockStartBreak(stack, x,y,z, player);
    }

    @Override
    public int getHarvestLevel(ItemStack stack, String toolClass) {
        // well, we can only get the harvestlevel if we have an item to get it from!
        if(stack == null || !(stack.getItem() instanceof HarvestTool))
            return -1;
        // invalid query or wrong toolclass
        if(toolClass == null || !this.getHarvestType().equals(toolClass))
            return -1;

        if(!stack.hasTagCompound())
            return -1;

        NBTTagCompound tags = stack.getTagCompound().getCompoundTag("InfiTool");
        // broken tools suck.
        if (tags.getBoolean("Broken"))
            return -1;

        // tadaaaa
        return tags.getInteger("HarvestLevel");
    }


    @Override
    public float getDigSpeed (ItemStack stack, Block block, int meta)
    {
        if (!stack.hasTagCompound())
            return 1.0f;

        NBTTagCompound tags = stack.getTagCompound().getCompoundTag("InfiTool");
        if (tags.getBoolean("Broken"))
            return 0.1f;

        Material[] materials = getEffectiveMaterials();
        for (int i = 0; i < materials.length; i++)
        {
            if (materials[i] == block.getMaterial())
            {
                return calculateStrength(tags, block, meta);
            }
        }
        if (this.getHarvestType().equals(block.getHarvestTool(meta)) && block.getHarvestLevel(meta) > 0)
        {
            return calculateStrength(tags, block, meta); // No issue if the
                                                         // harvest level is
                                                         // too low
        }
        return super.getDigSpeed(stack, block, meta);
    }

    public float calculateStrength (NBTTagCompound tags, Block block, int meta)
    {

        int hlvl = block.getHarvestLevel(meta);
        if (hlvl > tags.getInteger("HarvestLevel"))
            return 0.1f;

        return AbilityHelper.calcToolSpeed(this, tags);
    }

    public float breakSpeedModifier ()
    {
        return 1.0f;
    }

    public float stoneboundModifier ()
    {
        return 72f;
    }

    @Override
    public boolean func_150897_b (Block block)
    {
        if (block.getMaterial().isToolNotRequired())
        {
            return true;
        }
        return isEffective(block.getMaterial());
    }

    @Override
    public boolean canHarvestBlock (Block block, ItemStack itemStack)
    {
        return func_150897_b(block);
    }

    @Override
    public String[] getTraits ()
    {
        return new String[] { "harvest" };
    }

    protected abstract Material[] getEffectiveMaterials ();

    protected abstract String getHarvestType ();

    public boolean isEffective (Material material)
    {
        for (Material m : getEffectiveMaterials())
            if (m == material)
                return true;

        return false;
    }

    //Right-click
    @Override
    public boolean onItemUse (ItemStack stack, EntityPlayer player, World world, int x, int y, int z, int side, float clickX, float clickY, float clickZ)
    {
        /*if (world.isRemote)
            return true;*/

        boolean used = false;
        int hotbarSlot = player.inventory.currentItem;
        int itemSlot = hotbarSlot == 0 ? 8 : hotbarSlot + 1;
        ItemStack nearbyStack = null;

        if (hotbarSlot < 8)
        {
            nearbyStack = player.inventory.getStackInSlot(itemSlot);
            if (nearbyStack != null)
            {
                Item item = nearbyStack.getItem();
                if (item instanceof ItemBlock)
                {
                    int posX = x;
                    int posY = y;
                    int posZ = z;
                    int playerPosX = (int) Math.floor(player.posX);
                    int playerPosY = (int) Math.floor(player.posY);
                    int playerPosZ = (int) Math.floor(player.posZ);
                    if (side == 0)
                    {
                        --posY;
                    }

                    if (side == 1)
                    {
                        ++posY;
                    }

                    if (side == 2)
                    {
                        --posZ;
                    }

                    if (side == 3)
                    {
                        ++posZ;
                    }

                    if (side == 4)
                    {
                        --posX;
                    }

                    if (side == 5)
                    {
                        ++posX;
                    }
                    if (posX == playerPosX && (posY == playerPosY || posY == playerPosY + 1 || posY == playerPosY - 1) && posZ == playerPosZ)
                    {
                        return false;
                    }

                    used = item.onItemUse(nearbyStack, player, world, x, y, z, side, clickX, clickY, clickZ);
                    if (nearbyStack.stackSize < 1)
                    {
                        nearbyStack = null;
                        player.inventory.setInventorySlotContents(itemSlot, null);
                    }
                }
            }
        }

        /*
          if (used) //Update client
          {
               Packet103SetSlot packet = new Packet103SetSlot(player.openContainer.windowId, itemSlot, nearbyStack);
               ((EntityPlayerMP)player).playerNetServerHandler.sendPacketToPlayer(packet); 
          }
         */

        return used;
    }

    protected void breakExtraBlock(World world, int x, int y, int z, int sidehit, EntityPlayer player)
    {
        // prevent calling that stuff for air blocks, could lead to unexpected behaviour since it fires events
        if(world.isAirBlock(x,y,z))
            return;

        // check if the block can be broken, since extra block breaks shouldn't instantly break stuff like obsidian
        // or precious ores you can't harvest while mining stone
        Block block = world.getBlock(x,y,z);
        int meta = world.getBlockMetadata(x,y,z);

        // only effective materials
        if(!isEffective(block.getMaterial()))
            return;

        // only harvestable blocks that aren't impossibly slow to harvest
        if(!ForgeHooks.canHarvestBlock(block, player, meta) || ForgeHooks.blockStrength(block, player, world, x,y,z) <= 0.0001f)
            return;

        // this should only be called on the client
        if(!world.isRemote) {
            // serverside we
            EntityPlayerMP mpPlayer = (EntityPlayerMP) player;
            mpPlayer.theItemInWorldManager.tryHarvestBlock(x,y,z);
            // send block update to client
            mpPlayer.playerNetServerHandler.sendPacket(new S23PacketBlockChange(x, y, z, world));
            return;
        }

        // and this is the reason why ;o
        PlayerControllerMP pcmp = Minecraft.getMinecraft().playerController;
        // clientside we do a "this clock has been clicked on long enough to be broken" call. This should not send any new packets
        // the code above, executed on the server, sends a block-updates that give us the correct state of the block we destroy.
        pcmp.onPlayerDestroyBlock(x, y, z, sidehit);
    }
}