Solved Projectiles with items/blocks

Hi, I am trying to make a plugin with different guns in, as I want to texture the bullets differently I wanted to use items/blocks that it fires and when they hit a player they disappear and cause damage. But also if they don't hit anything they disappear after traveling a short distance.

The main problem is im not the best with java and this is the main area of the plugin I just have little clue what to do at the moment. I found some code that someone else wrote about something pretty close to what I'm trying. The post is: http://bukkit.org/threads/help-with-dropped-projectile-item.122284/

But I would like to do it with an item like a hoe as a gun and any other type of item that fires out and harms other players. Im not sure if that over code will help, but I tried to see how it works, but came across a lot of errors. Please can someone give me help with that or some other code which will do what I want. Thank you in advance.

My implementation of the code in forum (open) My implementation of the code in forum (close)

Code:

package me.benthomas7777.clashmc.util;

import java.util.List;

import net.minecraft.server.v1_8_R2.AxisAlignedBB;
import net.minecraft.server.v1_8_R2.EntityItem;
import net.minecraft.server.v1_8_R2.EntityLiving;
import net.minecraft.server.v1_8_R2.ItemStack;
import net.minecraft.server.v1_8_R2.MathHelper;
import net.minecraft.server.v1_8_R2.MovingObjectPosition;
import net.minecraft.server.v1_8_R2.MovingObjectPosition.EnumMovingObjectType;
import net.minecraft.server.v1_8_R2.Vec3D;
import net.minecraft.server.v1_8_R2.World;

import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_8_R2.CraftWorld;
import org.bukkit.craftbukkit.v1_8_R2.entity.CraftPlayer;
import org.bukkit.craftbukkit.v1_8_R2.inventory.CraftItemStack;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Item;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Player;
import org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;
public class CustomItem extends EntityItem {
  
    private EntityLiving    shooter;
  
    public CustomItem(World world, double d0, double d1, double d2,
            ItemStack itemstack, EntityLiving entity) {
        super(world, d0, d1, d2, itemstack);
        shooter = entity;
    }
  
    public CustomItem(World world, EntityLiving entityliving, ItemStack item) {
        super(world);
        setItemStack(item);
        shooter = entityliving;
        this.a(0.25F, 0.25F);
        setPositionRotation(entityliving.locX,
                entityliving.locY + entityliving.getHeadHeight(),
                entityliving.locZ, entityliving.yaw, entityliving.pitch);
        locX -= (MathHelper.cos(yaw / 180.0F * 3.1415927F) * 0.16F);
        locY -= 0.10000000149011612D;
        locZ -= (MathHelper.sin(yaw / 180.0F * 3.1415927F) * 0.16F);
        setPosition(locX, locY, locZ);
        height = 0.0F;
        float f = 0.4F;
      
        motX = (-MathHelper.sin(yaw / 180.0F * 3.1415927F)
                * MathHelper.cos(pitch / 180.0F * 3.1415927F) * f);
        motZ = (MathHelper.cos(yaw / 180.0F * 3.1415927F)
                * MathHelper.cos(pitch / 180.0F * 3.1415927F) * f);
        motY = (-MathHelper.sin(pitch / 180.0F * 3.1415927F) * f);
        shoot(motX, motY, motZ, 1.5F, 1.0F);
    }
  
    @SuppressWarnings("rawtypes")
    @Override
    public void j_() {
        super.j_();
        Vec3D vec3d = world.getVec3DPool().create(locX, locY, locZ);
        Vec3D vec3d1 = world.getVec3DPool().create(locX + motX, locY + motY,
                locZ + motZ);
        MovingObjectPosition movingobjectposition = world.a(vec3d, vec3d1);
      
        vec3d = world.getVec3DPool().create(locX, locY, locZ);
        vec3d1 = world.getVec3DPool().create(locX + motX, locY + motY,
                locZ + motZ);
        if (movingobjectposition != null)
            vec3d1 = world.getVec3DPool().create(movingobjectposition.pos.c,
                    movingobjectposition.pos.d, movingobjectposition.pos.e);
      
        if (!world.isStatic) {
            Entity entity = null;
            List list = world.getEntities(this, boundingBox.a(motX, motY, motZ)
                    .grow(1.0D, 1.0D, 1.0D));
            double d0 = 0.0D;
            EntityLiving entityliving = shooter;
          
            for (int j = 0; j < list.size(); ++j) {
                Entity entity1 = (Entity) list.get(j);
              
                if (entity1.L() && entity1 != entityliving) {
                    float f = 0.3F;
                    AxisAlignedBB axisalignedbb = entity1.boundingBox.grow(f,
                            f, f);
                    MovingObjectPosition movingobjectposition1 = axisalignedbb
                            .a(vec3d, vec3d1);
                  
                    if (movingobjectposition1 != null) {
                        double d1 = vec3d
                                .distanceSquared(movingobjectposition1.pos);
                      
                        if (d1 < d0 || d0 == 0.0D) {
                            entity = entity1;
                            d0 = d1;
                        }
                    }
                }
            }
          
            if (entity != null)
                movingobjectposition = new MovingObjectPosition(entity);
        }
      
        LivingEntity living = null;
        if (movingobjectposition != null)
            if (movingobjectposition.type == EnumMovingObjectType.TILE) {
            }
            else if (movingobjectposition.entity != null
                    && movingobjectposition.entity instanceof EntityLiving)
                living = (LivingEntity) movingobjectposition.entity
                        .getBukkitEntity();
        // HERE WRITE CODE ON ENTITY HIT---------------------------------------------------------------
        living.addPotionEffect(new PotionEffect(PotionEffectType.SLOW, 100, 1));
    }
  
    public void shoot(double d0, double d1, double d2, float f, float f1) {
        float f2 = MathHelper.sqrt(d0 * d0 + d1 * d1 + d2 * d2);
      
        d0 /= f2;
        d1 /= f2;
        d2 /= f2;
        d0 += random.nextGaussian() * 0.007499999832361937D * f1;
        d1 += random.nextGaussian() * 0.007499999832361937D * f1;
        d2 += random.nextGaussian() * 0.007499999832361937D * f1;
        d0 *= f;
        d1 *= f;
        d2 *= f;
        motX = d0;
        motY = d1;
        motZ = d2;
        float f3 = MathHelper.sqrt(d0 * d0 + d2 * d2);
      
        lastYaw = yaw = (float) (Math.atan2(d0, d2) * 180.0D / 3.1415927410125732D);
        lastPitch = pitch = (float) (Math.atan2(d1, f3) * 180.0D / 3.1415927410125732D);
    }
  
    public static Item launch(Player player,
            org.bukkit.inventory.ItemStack item1) {
        Location location = player.getLocation();
        CustomItem item = new CustomItem(
                ((CraftWorld) player.getWorld()).getHandle(),
                ((CraftPlayer) player).getHandle(),
                CraftItemStack.asNMSCopy(item1));
        ((CraftWorld) location.getWorld()).getHandle().addEntity(item,
                SpawnReason.CUSTOM);
        return (Item) item.getBukkitEntity();
    }
  
}

Errors that eclipse shows (Don't know how to fix) (open) Errors that eclipse shows (Don't know how to fix) (close)

Code:

Description    Resource    Path    Location    Type
boundingBox cannot be resolved or is not a field    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 88    Java Problem
d cannot be resolved or is not a field    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 74    Java Problem
e cannot be resolved or is not a field    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 74    Java Problem
height cannot be resolved to a variable    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 49    Java Problem
isStatic cannot be resolved or is not a field    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 76    Java Problem
The constructor MovingObjectPosition(Entity) is undefined    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 106    Java Problem
The field Entity.boundingBox is not visible    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 78    Java Problem
The method a(Vec3D, AxisAlignedBB) in the type World is not applicable for the arguments (Vec3D, Vec3D)    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 67    Java Problem
The method getVec3DPool() is undefined for the type World    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 64    Java Problem
The method getVec3DPool() is undefined for the type World    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 65    Java Problem
The method getVec3DPool() is undefined for the type World    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 69    Java Problem
The method getVec3DPool() is undefined for the type World    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 70    Java Problem
The method getVec3DPool() is undefined for the type World    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 73    Java Problem
The method j_() is undefined for the type EntityItem    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 63    Java Problem
The method j_() of type CustomItem must override or implement a supertype method    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 62    Java Problem
The method L() is undefined for the type Entity    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 86    Java Problem
TILE cannot be resolved or is not a field    CustomItem.java    /Clashmc/src/me/benthomas7777/clashmc/util    line 111    Java Problem

 

@benthomas7777 Not sure how you can misinterpret the errors... they specifically state exactly what's going wrong.