i am a noob at coding. now thats out of the way.

 

i have a problem.

 

i want to make an item when right clicked on a block it spawns a 3x3 wall on that block and after a few sec, de-spawns.

 

i have googled this sorta thing and i could only find a way to spawn 1 block. and that method comes from itemFlintAndSteel. and the method is quite complex for me to understand. so if someone could either explain how that works or knows another method that is easier to understand. let me know

 

itemFlintAndSteel method:

public boolean onItemUse(ItemStack par1ItemStack, EntityPlayer par2EntityPlayer, World par3World, int par4, int par5, int par6, int par7, float par8, float par9, float par10)

    {

        if (par7 == 0)

        {

            --par5;

        }

 

        if (par7 == 1)

        {

            ++par5;

        }

 

        if (par7 == 2)

        {

            --par6;

        }

 

        if (par7 == 3)

        {

            ++par6;

        }

 

        if (par7 == 4)

        {

            --par4;

        }

 

        if (par7 == 5)

        {

            ++par4;

        }

 

        if (!par2EntityPlayer.canPlayerEdit(par4, par5, par6, par7, par1ItemStack))

        {

            return false;

        }

        else

        {

            if (par3World.isAirBlock(par4, par5, par6))

            {

                par3World.playSoundEffect((double)par4 + 0.5D, (double)par5 + 0.5D, (double)par6 + 0.5D, "fire.ignite", 1.0F, itemRand.nextFloat() * 0.4F + 0.8F);

                par3World.setBlock(par4, par5, par6, Block.fire.blockID);

            }

 

            par1ItemStack.damageItem(1, par2EntityPlayer);

            return true;

        }

    }

 

 

thanks in advance

I'll change name of some parameters so you can easily understand them.

 

//This method is called when right-clicked with an item.

//I think it was for placing block from the items, so the block position would be where a block would appear.

//bx, by, bz is the coordinate of the clicked region.

//side is the placing side. Bottom = 0, Top = 1, East = 2, West = 3, North = 4, South = 5.

//px, py, pz is the coordinate of the player relative to the clicked block.

public boolean onItemUse(ItemStack used, EntityPlayer player, World world, int bx, int by, int bz, int side, float px, float py, float pz)

    {

        //clicked bottom of the block

        if (side == 0)

        {

            //decreases the y position to get the actual clicked block

            --by;

        }

 

        //clicked top of the block

        if (side == 1)

        {

            //increases the y position to get the actual clicked block

            ++by;

        }

 

        //and so on...

        if (side == 2)

        {

            --bz;

        }

 

        if (side == 3)

        {

            ++bz;

        }

 

        if (side == 4)

        {

            --bx;

        }

 

        if (side == 5)

        {

            ++bx;

        }

 

        //check if player can edit the block.

        if (!player.canPlayerEdit(bx, by, bz, side, used))

        {

            //Item didnt used.

            return false;

        }

        else

        {

            //When the block is air,

            if (world.isAirBlock(bx, by, bz))

            {

                //play Sound at the center of the block.

                world.playSoundEffect((double)x+ 0.5D, (double)y+ 0.5D, (double)z+ 0.5D, "fire.ignite", 1.0F, itemRand.nextFloat() * 0.4F + 0.8F);

               

                //Sets the Block!

                world.setBlock(par4, par5, par6, Block.fire.blockID);

            }

 

            //Damages the Item.

            used.damageItem(1, player);

 

            //Item used.

            return true;

        }

   

I'll change name of some parameters so you can easily understand them.

 

//This method is called when right-clicked with an item.

//I think it was for placing block from the items, so the block position would be where a block would appear.

//bx, by, bz is the coordinate of the clicked region.

//side is the placing side. Bottom = 0, Top = 1, East = 2, West = 3, North = 4, South = 5.

//px, py, pz is the coordinate of the player relative to the clicked block.

public boolean onItemUse(ItemStack used, EntityPlayer player, World world, int bx, int by, int bz, int side, float px, float py, float pz)

    {

        //clicked bottom of the block

        if (side == 0)

        {

            //decreases the y position to get the actual clicked block

            --by;

        }

 

        //clicked top of the block

        if (side == 1)

        {

            //increases the y position to get the actual clicked block

            ++by;

        }

 

        //and so on...

        if (side == 2)

        {

            --bz;

        }

 

        if (side == 3)

        {

            ++bz;

        }

 

        if (side == 4)

        {

            --bx;

        }

 

        if (side == 5)

        {

            ++bx;

        }

 

        //check if player can edit the block.

        if (!player.canPlayerEdit(bx, by, bz, side, used))

        {

            //Item didnt used.

            return false;

        }

        else

        {

            //When the block is air,

            if (world.isAirBlock(bx, by, bz))

            {

                //play Sound at the center of the block.

                world.playSoundEffect((double)x+ 0.5D, (double)y+ 0.5D, (double)z+ 0.5D, "fire.ignite", 1.0F, itemRand.nextFloat() * 0.4F + 0.8F);

               

                //Sets the Block!

                world.setBlock(par4, par5, par6, Block.fire.blockID);

            }

 

            //Damages the Item.

            used.damageItem(1, player);

 

            //Item used.

            return true;

        }

 

 

thanks for your help Abastro really apriciated. i am going to see if i can get what i want from it(i propebly will) thanks again