Grappling hook

Hi, I want to create a grappling hook, this is my code so far:

package mod.mcreator;//based on master condiguration
 
import cpw.mods.fml.client.*;
import cpw.mods.fml.client.registry.*;
import cpw.mods.fml.common.*;
import cpw.mods.fml.common.asm.*;
import cpw.mods.fml.common.asm.transformers.*;
import cpw.mods.fml.common.discovery.*;
import cpw.mods.fml.common.discovery.asm.*;
import cpw.mods.fml.common.event.*;
import cpw.mods.fml.common.functions.*;
import cpw.mods.fml.common.network.*;
import cpw.mods.fml.common.registry.*;
import cpw.mods.fml.common.toposort.*;
import cpw.mods.fml.common.versioning.*;
import cpw.mods.fml.relauncher.*;
import cpw.mods.fml.server.*;
import net.minecraft.block.*;
import net.minecraft.block.material.*;
import net.minecraft.client.*;
import net.minecraft.client.audio.*;
import net.minecraft.client.entity.*;
import net.minecraft.client.gui.*;
import net.minecraft.client.gui.achievement.*;
import net.minecraft.client.gui.inventory.*;
import net.minecraft.client.model.*;
import net.minecraft.client.multiplayer.*;
import net.minecraft.client.particle.*;
import net.minecraft.client.renderer.*;
import net.minecraft.client.renderer.culling.*;
import net.minecraft.client.renderer.entity.*;
import net.minecraft.client.renderer.tileentity.*;
import net.minecraft.client.settings.*;
import net.minecraft.command.*;
import net.minecraft.crash.*;
import net.minecraft.creativetab.*;
import net.minecraft.dispenser.*;
import net.minecraft.enchantment.*;
import net.minecraft.entity.*;
import net.minecraft.entity.projectile.EntityThrowable;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.ai.*;
import net.minecraft.entity.boss.*;
import net.minecraft.entity.effect.*;
import net.minecraft.entity.item.*;
import net.minecraft.entity.monster.*;
import net.minecraft.entity.passive.*;
import net.minecraft.entity.player.*;
import net.minecraft.entity.projectile.*;
import net.minecraft.inventory.*;
import net.minecraft.item.*;
import net.minecraft.item.crafting.*;
import net.minecraft.nbt.*;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.network.*;
import net.minecraft.network.rcon.*;
import net.minecraft.pathfinding.*;
import net.minecraft.potion.*;
import net.minecraft.profiler.*;
import net.minecraft.server.*;
import net.minecraft.server.dedicated.*;
import net.minecraft.server.gui.*;
import net.minecraft.server.integrated.*;
import net.minecraft.server.management.*;
import net.minecraft.src.*;
import net.minecraft.stats.*;
import net.minecraft.tileentity.*;
import net.minecraft.util.*;
import net.minecraft.village.*;
import net.minecraft.world.*;
import net.minecraft.world.biome.*;
import net.minecraft.world.chunk.*;
import net.minecraft.world.chunk.storage.*;
import net.minecraft.world.demo.*;
import net.minecraft.world.gen.*;
import net.minecraft.world.gen.feature.*;
import net.minecraft.world.gen.layer.*;
import net.minecraft.world.gen.structure.*;
import net.minecraft.world.storage.*;
import net.minecraftforge.classloading.*;
import net.minecraftforge.client.*;
import net.minecraftforge.client.event.*;
import net.minecraftforge.client.event.sound.*;
import net.minecraftforge.common.*;
import net.minecraftforge.event.*;
import net.minecraftforge.event.entity.*;
import net.minecraftforge.event.entity.item.*;
import net.minecraftforge.event.entity.living.*;
import net.minecraftforge.event.entity.minecart.*;
import net.minecraftforge.event.entity.player.*;
import net.minecraftforge.event.terraingen.*;
import net.minecraftforge.event.world.*;
import net.minecraftforge.oredict.*;
import net.minecraftforge.transformers.*;
import net.minecraft.init.*;
import java.util.*;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MovingObjectPosition;
 import org.lwjgl.opengl.GL11;
 import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.entity.Entity;
import net.minecraft.entity.projectile.EntityFishHook;
import net.minecraft.util.MathHelper;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.Vec3;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL12;
import io.netty.buffer.ByteBuf;
 
@SuppressWarnings("unchecked")
public class mcreator_yoYo {

    public static int mobid = 0;
    public Object instance;
 
    public void load(){}
 
    public void generateNether(World world, Random random, int chunkX, int chunkZ){}
    public void generateSurface(World world, Random random, int chunkX, int chunkZ){}
    public int addFuel(ItemStack fuel){
        return 0;
    }
    @SideOnly(Side.CLIENT)
    public void registerRenderers(){
       
        RenderingRegistry.registerEntityRenderingHandler(mcreator_yoYo.EntityyoYo.class, new RenderFish());
    }
 
 
    public void serverLoad(FMLServerStartingEvent event){}
    public void preInit(FMLPreInitializationEvent event){
        int entityID = EntityRegistry.findGlobalUniqueEntityId();
        mobid = entityID;
        EntityRegistry.registerGlobalEntityID(mcreator_yoYo.EntityyoYo.class, "yoYo", entityID);
        EntityRegistry.registerModEntity(mcreator_yoYo.EntityyoYo.class, "yoYo", entityID, instance, 64, 1, true);
       
 
       
    }
 

 
 public static class EntityyoYo extends EntityThrowable implements IEntityAdditionalSpawnData{
 public EntityPlayer field_146042_b;
public EntityyoYo(World par1World, double par2, double par4, double par6)
{
super(par1World, par2, par4, par6);
}
public EntityyoYo(World par1World, EntityLivingBase par2EntityLivingBase)
{
super(par1World, par2EntityLivingBase);
}
public EntityyoYo(World par1World)
{
super(par1World);
}
public EntityyoYo(World par1World, EntityLivingBase par2EntityLivingBase, EntityPlayer player)
{
super(par1World, par2EntityLivingBase);
this.field_146042_b = player;
}
/**
 * Called when this EntityThrowable hits a block or entity.
 */
protected void onImpact(MovingObjectPosition par1MovingObjectPosition)
    {
        if (par1MovingObjectPosition.entityHit != null)
        {
            byte b0 = 18;          
 
            par1MovingObjectPosition.entityHit.attackEntityFrom(DamageSource.causeThrownDamage(this, this.getThrower()), (float)b0);
        }
 
        if (!this.worldObj.isRemote)
        {
            this.setDead();
        }
    }
    public void writeSpawnData(ByteBuf data)
    {
     data.writeInt(this.field_146042_b != null ? this.field_146042_b.getEntityId() : 0);
    }

    public void readSpawnData(ByteBuf data)
    {
     this.field_146042_b = (EntityPlayer)this.worldObj.getEntityByID(data.readInt());
    }
 
public void interactEvent(EntityInteractEvent event){
if(event.target instanceof EntityCreature){
int entityID = EntityList.getEntityID(event.target);
ItemStack currentItem = event.entityPlayer.inventory.getCurrentItem();
if(currentItem != null){
     if(currentItem == new ItemStack( mcreator_amethystsWhip.block, 1) && currentItem.getItemDamage() == 0){
     event.target.setDead();
     currentItem.setItemDamage(entityID);
     }
}
}
}
 
 
}
 
 
@SideOnly(Side.CLIENT)
public static class RenderFish extends Render
{
    private static final ResourceLocation field_110792_a = new ResourceLocation("textures/particle/particles.png");
    private static final String __OBFID = "CL_00000996";

    /**
     * Actually renders the given argument. This is a synthetic bridge method, always casting down its argument and then
     * handing it off to a worker function which does the actual work. In all probabilty, the class Render is generic
     * (Render<T extends Entity) and this method has signature public void func_76986_a(T entity, double d, double d1,
     * double d2, float f, float f1). But JAD is pre 1.5 so doesn't do that.
     */
    public void doRender(Entitywhip p_76986_1_, double p_76986_2_, double p_76986_4_, double p_76986_6_, float p_76986_8_, float p_76986_9_)
    {
        GL11.glPushMatrix();
        GL11.glTranslatef((float)p_76986_2_, (float)p_76986_4_, (float)p_76986_6_);
        GL11.glEnable(GL12.GL_RESCALE_NORMAL);
        GL11.glScalef(0.5F, 0.5F, 0.5F);
        this.bindEntityTexture(p_76986_1_);
        Tessellator tessellator = Tessellator.instance;
        byte b0 = 1;
        byte b1 = 2;
        float f2 = (float)(b0 * 8 + 0) / 128.0F;
        float f3 = (float)(b0 * 8 + 8) / 128.0F;
        float f4 = (float)(b1 * 8 + 0) / 128.0F;
        float f5 = (float)(b1 * 8 + 8) / 128.0F;
        float f6 = 1.0F;
        float f7 = 0.5F;
        float f8 = 0.5F;
        GL11.glRotatef(180.0F - this.renderManager.playerViewY, 0.0F, 1.0F, 0.0F);
        GL11.glRotatef(-this.renderManager.playerViewX, 1.0F, 0.0F, 0.0F);
        tessellator.startDrawingQuads();
        tessellator.setNormal(0.0F, 1.0F, 0.0F);
        tessellator.addVertexWithUV((double)(0.0F - f7), (double)(0.0F - f8), 0.0D, (double)f2, (double)f5);
        tessellator.addVertexWithUV((double)(f6 - f7), (double)(0.0F - f8), 0.0D, (double)f3, (double)f5);
        tessellator.addVertexWithUV((double)(f6 - f7), (double)(1.0F - f8), 0.0D, (double)f3, (double)f4);
        tessellator.addVertexWithUV((double)(0.0F - f7), (double)(1.0F - f8), 0.0D, (double)f2, (double)f4);
        tessellator.draw();
        GL11.glDisable(GL12.GL_RESCALE_NORMAL);
        GL11.glPopMatrix();

        if (p_76986_1_.field_146042_b != null)
        {
            float f9 = p_76986_1_.field_146042_b.getSwingProgress(p_76986_9_);
            float f10 = MathHelper.sin(MathHelper.sqrt_float(f9) * (float)Math.PI);
            Vec3 vec3 = Vec3.createVectorHelper(-0.5D, 0.03D, 0.8D);
            vec3.rotateAroundX(-(p_76986_1_.field_146042_b.prevRotationPitch + (p_76986_1_.field_146042_b.rotationPitch - p_76986_1_.field_146042_b.prevRotationPitch) * p_76986_9_) * (float)Math.PI / 180.0F);
            vec3.rotateAroundY(-(p_76986_1_.field_146042_b.prevRotationYaw + (p_76986_1_.field_146042_b.rotationYaw - p_76986_1_.field_146042_b.prevRotationYaw) * p_76986_9_) * (float)Math.PI / 180.0F);
            vec3.rotateAroundY(f10 * 0.5F);
            vec3.rotateAroundX(-f10 * 0.7F);
            double d3 = p_76986_1_.field_146042_b.prevPosX + (p_76986_1_.field_146042_b.posX - p_76986_1_.field_146042_b.prevPosX) * (double)p_76986_9_ + vec3.xCoord;
            double d4 = p_76986_1_.field_146042_b.prevPosY + (p_76986_1_.field_146042_b.posY - p_76986_1_.field_146042_b.prevPosY) * (double)p_76986_9_ + vec3.yCoord;
            double d5 = p_76986_1_.field_146042_b.prevPosZ + (p_76986_1_.field_146042_b.posZ - p_76986_1_.field_146042_b.prevPosZ) * (double)p_76986_9_ + vec3.zCoord;
            double d6 = p_76986_1_.field_146042_b == Minecraft.getMinecraft().thePlayer ? 0.0D : (double)p_76986_1_.field_146042_b.getEyeHeight();

            if (this.renderManager.options.thirdPersonView > 0 || p_76986_1_.field_146042_b != Minecraft.getMinecraft().thePlayer)
            {
                float f11 = (p_76986_1_.field_146042_b.prevRenderYawOffset + (p_76986_1_.field_146042_b.renderYawOffset - p_76986_1_.field_146042_b.prevRenderYawOffset) * p_76986_9_) * (float)Math.PI / 180.0F;
                double d7 = (double)MathHelper.sin(f11);
                double d9 = (double)MathHelper.cos(f11);
                d3 = p_76986_1_.field_146042_b.prevPosX + (p_76986_1_.field_146042_b.posX - p_76986_1_.field_146042_b.prevPosX) * (double)p_76986_9_ - d9 * 0.35D - d7 * 0.85D;
                d4 = p_76986_1_.field_146042_b.prevPosY + d6 + (p_76986_1_.field_146042_b.posY - p_76986_1_.field_146042_b.prevPosY) * (double)p_76986_9_ - 0.45D;
                d5 = p_76986_1_.field_146042_b.prevPosZ + (p_76986_1_.field_146042_b.posZ - p_76986_1_.field_146042_b.prevPosZ) * (double)p_76986_9_ - d7 * 0.35D + d9 * 0.85D;
            }

            double d14 = p_76986_1_.prevPosX + (p_76986_1_.posX - p_76986_1_.prevPosX) * (double)p_76986_9_;
            double d8 = p_76986_1_.prevPosY + (p_76986_1_.posY - p_76986_1_.prevPosY) * (double)p_76986_9_ + 0.25D;
            double d10 = p_76986_1_.prevPosZ + (p_76986_1_.posZ - p_76986_1_.prevPosZ) * (double)p_76986_9_;
            double d11 = (double)((float)(d3 - d14));
            double d12 = (double)((float)(d4 - d8));
            double d13 = (double)((float)(d5 - d10));
            GL11.glDisable(GL11.GL_TEXTURE_2D);
            GL11.glDisable(GL11.GL_LIGHTING);
            tessellator.startDrawing(3);
            tessellator.setColorOpaque_I(0);
            byte b2 = 16;

            for (int i = 0; i <= b2; ++i)
            {
                float f12 = (float)i / (float)b2;
                tessellator.addVertex(p_76986_2_ + d11 * (double)f12, p_76986_4_ + d12 * (double)(f12 * f12 + f12) * 0.5D + 0.25D, p_76986_6_ + d13 * (double)f12);
            }

            tessellator.draw();
            GL11.glEnable(GL11.GL_LIGHTING);
            GL11.glEnable(GL11.GL_TEXTURE_2D);
        }
    }

    /**
     * Returns the location of an entity's texture. Doesn't seem to be called unless you call Render.bindEntityTexture.
     */
    protected ResourceLocation getEntityTexture(Entitywhip p_110775_1_)
    {
        return field_110792_a;
    }

    /**
     * Returns the location of an entity's texture. Doesn't seem to be called unless you call Render.bindEntityTexture.
     */
    protected ResourceLocation getEntityTexture(Entity p_110775_1_)
    {
        return this.getEntityTexture((Entitywhip)p_110775_1_);
    }

    /**
     * Actually renders the given argument. This is a synthetic bridge method, always casting down its argument and then
     * handing it off to a worker function which does the actual work. In all probabilty, the class Render is generic
     * (Render<T extends Entity) and this method has signature public void func_76986_a(T entity, double d, double d1,
     * double d2, float f, float f1). But JAD is pre 1.5 so doesn't do that.
     */
    public void doRender(Entity p_76986_1_, double p_76986_2_, double p_76986_4_, double p_76986_6_, float p_76986_8_, float p_76986_9_)
    {
        this.doRender((Entitywhip)p_76986_1_, p_76986_2_, p_76986_4_, p_76986_6_, p_76986_8_, p_76986_9_);
    }
}
 
public static class ModelWhip extends ModelBase
{
  //fields
    ModelRenderer whip;
 
  public ModelWhip()
  {
    textureWidth = 64;
    textureHeight = 32;
   
      whip = new ModelRenderer(this, 2, 1);
      whip.addBox(0F, 0F, 0F, 1, 0, 16);
      whip.setRotationPoint(-5F, 16F, -23F);
      whip.setTextureSize(64, 32);
      whip.mirror = true;
      setRotation(whip, 0F, 0F, 0F);
  }
 
  public void render(Entity entity, float f, float f1, float f2, float f3, float f4, float f5)
  {
    super.render(entity, f, f1, f2, f3, f4, f5);
   
    whip.render(f5);
  }
 
  private void setRotation(ModelRenderer model, float x, float y, float z)
  {
    model.rotateAngleX = x;
    model.rotateAngleY = y;
    model.rotateAngleZ = z;
  }
 
 
 
 
}
}

So, in the impact part I want it to be so where entity hits block player is telaported there.

Can anyone help?