Spawning Projectile Through OnBlockActivated

[Lumby]

I have a custom block that I want to spawn an arrow projectile on its front face every time a player right clicks said block while holding cobblestone. I've been digging around google and most people who wanted to achieve a similar effect seemed to have used the worldIn.spawnEntityInWorld(). I cannot, however, find said method in the world class, and judging from how the forum posts I've referenced are all 2yrs+ old, I'm guessing this method has been removed. Any ideas how I can achieve this in minecraft 1.12? 

 

This is the code for my custom block if it helps:

public class TrebuchetBlock extends BlockBase{

	public static final PropertyDirection FACING = PropertyDirection.create("facing", EnumFacing.Plane.HORIZONTAL);
	
	public TrebuchetBlock(String name, Material material) {
		super(name, material);
		setSoundType(SoundType.STONE);
		setHardness(18.0F);
		setResistance(18.0F);
		setHarvestLevel("pickaxe",3);
		setCreativeTab(CreativeTabs.REDSTONE);
		
        }
	
	
    public boolean onBlockActivated(World worldIn, BlockPos pos, IBlockState state, EntityPlayer playerIn, EnumHand hand, EnumFacing facing, float side, float hitX, float hitY){
    	if(worldIn.isRemote) {
        	if(playerIn.getHeldItemMainhand().getItem().equals(Item.getItemFromBlock(Blocks.COBBLESTONE))) {
        		//Insert solution here
        		return true;
        	}else{
                
        		return true;
        	}
    	}else{
    		return false;
    	}
    }
	
    protected BlockStateContainer createBlockState(){
        return new BlockStateContainer(this, new IProperty[] {FACING});
    }

    public IBlockState withRotation(IBlockState state, Rotation rot){
        return state.withProperty(FACING, rot.rotate((EnumFacing)state.getValue(FACING)));
    }
    
    public IBlockState withMirror(IBlockState state, Mirror mirrorIn){
        return state.withRotation(mirrorIn.toRotation((EnumFacing)state.getValue(FACING)));
    }
    
    public IBlockState getStateForPlacement(World worldIn, BlockPos pos, EnumFacing facing, float hitX, float hitY, float hitZ, int meta, EntityLivingBase placer){
        return this.getDefaultState().withProperty(FACING, placer.getHorizontalFacing().getOpposite());
    }
    
    public int getMetaFromState(IBlockState state){
        int i = 0;
        i = i | ((EnumFacing)state.getValue(FACING)).getHorizontalIndex();
        return i;
    }
    
    public IBlockState getStateFromMeta(int meta){
        return this.getDefaultState().withProperty(FACING, EnumFacing.getHorizontal(meta));
    }
}

 

[Animefan8888]

9 minutes ago, Lumby said:

worldIn.spawnEntityInWorld()

Its changed from that to World#spawnEntity