Making a Mob Spawn Item

[Ravenclaw572]

Hello! I've come across an issue while trying to create a mod. I can't find any way to create a custom mob spawner item, like ItemMonsterPlacer.class, without making a mob egg. Is there any way I can do this? Or can I somehow edit the texture for my specific mob's egg? Any and all help is appreciated!

[ObsequiousNewt]

Register your entity like this:

	EntityRegistry.registerModEntity(MyEntity.class,"myEntityID",id,this,trackingRange,updateFrequency,true);

I use 256 for trackingRange and 1 for updateFrequency.

Then you need to override onItemRightClick() in your item class. Look at ItemBoat for how to do it.

[Ravenclaw572]

Register your entity like this:

	EntityRegistry.registerModEntity(MyEntity.class,"myEntityID",id,this,trackingRange,updateFrequency,true);

I use 256 for trackingRange and 1 for updateFrequency.

Then you need to override onItemRightClick() in your item class. Look at ItemBoat for how to do it.

 

I'd already registered it, and had it working. I just needed the item. I did look at the boat code, to no avail. I'm still quite clueless. Here's the code:

public class MobSpawner extends Item {
    public MobSpawner(int par1)
    {
        super(par1);
        this.setCreativeTab(MyMod.MyTab);
    }

    /**
     * Called whenever this item is equipped and the right mouse button is pressed. Args: itemStack, world, entityPlayer
     */
    public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)
    {
        float f = 1.0F;
        float f1 = par3EntityPlayer.prevRotationPitch + (par3EntityPlayer.rotationPitch - par3EntityPlayer.prevRotationPitch) * f;
        float f2 = par3EntityPlayer.prevRotationYaw + (par3EntityPlayer.rotationYaw - par3EntityPlayer.prevRotationYaw) * f;
        double d0 = par3EntityPlayer.prevPosX + (par3EntityPlayer.posX - par3EntityPlayer.prevPosX) * (double)f;
        double d1 = par3EntityPlayer.prevPosY + (par3EntityPlayer.posY - par3EntityPlayer.prevPosY) * (double)f + 1.62D - (double)par3EntityPlayer.yOffset;
        double d2 = par3EntityPlayer.prevPosZ + (par3EntityPlayer.posZ - par3EntityPlayer.prevPosZ) * (double)f;
        Vec3 vec3 = par2World.getWorldVec3Pool().getVecFromPool(d0, d1, d2);
        float f3 = MathHelper.cos(-f2 * 0.017453292F - (float)Math.PI);
        float f4 = MathHelper.sin(-f2 * 0.017453292F - (float)Math.PI);
        float f5 = -MathHelper.cos(-f1 * 0.017453292F);
        float f6 = MathHelper.sin(-f1 * 0.017453292F);
        float f7 = f4 * f5;
        float f8 = f3 * f5;
        double d3 = 5.0D;
        Vec3 vec31 = vec3.addVector((double)f7 * d3, (double)f6 * d3, (double)f8 * d3);
        MovingObjectPosition movingobjectposition = par2World.rayTraceBlocks_do(vec3, vec31, true);

        if (movingobjectposition == null)
        {
            return par1ItemStack;
        }
        else
        {
            Vec3 vec32 = par3EntityPlayer.getLook(f);
            boolean flag = false;
            float f9 = 1.0F;
            List list = par2World.getEntitiesWithinAABBExcludingEntity(par3EntityPlayer, par3EntityPlayer.boundingBox.addCoord(vec32.xCoord * d3, vec32.yCoord * d3, vec32.zCoord * d3).expand((double)f9, (double)f9, (double)f9));
            int i;

            for (i = 0; i < list.size(); ++i)
            {
                Entity entity = (Entity)list.get(i);

                if (entity.canBeCollidedWith())
                {
                    float f10 = entity.getCollisionBorderSize();
                    AxisAlignedBB axisalignedbb = entity.boundingBox.expand((double)f10, (double)f10, (double)f10);

                    if (axisalignedbb.isVecInside(vec3))
                    {
                        flag = true;
                    }
                }
            }

            if (flag)
            {
                return par1ItemStack;
            }
            else
            {
                if (movingobjectposition.typeOfHit == EnumMovingObjectType.TILE)
                {
                    i = movingobjectposition.blockX;
                    int j = movingobjectposition.blockY;
                    int k = movingobjectposition.blockZ;

                    if (par2World.getBlockId(i, j, k) == Block.snow.blockID)
                    {
                        --j;
                    }

                    EntityMyEntity entitymyentity = new EntityMyEntity(par2World);
                    entitymyentity.rotationYaw = (float)(((MathHelper.floor_double((double)(par3EntityPlayer.rotationYaw * 4.0F / 360.0F) + 0.5D) & 3) - 1) * 90);

                    if (!par2World.getCollidingBoundingBoxes(entitymyentity, entitymyentity.boundingBox.expand(-0.1D, -0.1D, -0.1D)).isEmpty())
                    {
                        return par1ItemStack;
                    }

                    if (!par2World.isRemote)
                    {
                        par2World.spawnEntityInWorld(entitymyentity);
                    }

                    if (!par3EntityPlayer.capabilities.isCreativeMode)
                    {
                        --par1ItemStack.stackSize;
                    }
                }

                return par1ItemStack;
            }
        }
    }
    
       public String getTextureFile() {
           return "/myspawner.png";
       }
}

[ObsequiousNewt]

Did you try putting some sort of a check in there to see if it's getting called? Remember, also, that you have to spawn it far enough; that checks for collisions as with boats.

[Ravenclaw572]

Did you try putting some sort of a check in there to see if it's getting called? Remember, also, that you have to spawn it far enough; that checks for collisions as with boats.

 

I'm not sure exactly how to. I'm new to Forge Modding. Not so much ModLoader, though it is essentially the same thing, in a way. I know that shouldn't affect items, however. I need something like the mob spawn eggs. That's how my mod was originally. Is there anyway I could edit the texture, or create a new entity list? Like, a separate new mob egg item? I could do textures for that. Considering most of the stuff is just recolored.

[Draco18s]

You can still open up the vanilla classes and see how they do things and copy their code.

[Ravenclaw572]

You can still open up the vanilla classes and see how they do things and copy their code.

 

I've tried that. I replaced everything as necessary. I may just copy the entity list file.