Hi

 

I was wondering how to manipulate a BlockPos, i.e. add 1 to x or z

But I'm not sure how to do this, I've got

pos = pos.offset(facing);

Inside onItemUse, which I know all works as this returns the x,y,z pos of the block. Say I have position BlockPos{x=20, y=40, z=-100}, how do I get this to say {x=20, y=40, z=101} for example.

 

Thanks 

Edited August 14, 20187 yr by Blu_Nighttime

BlockPos has methods for every direction one without params which target the blockPos next to it and one with an int param which searches the BlockPos in int value blocks distance. Sorry if this is unclear

I think they are called

up, down, north, west, south ,east

For reference:

+X is East

+Y is Up

+Z is South

Also, a block pos contains fields for each of x, y, z so if you can do any math you want. Although most common operations, like getting block beside or above already have dedicated methods as mentioned. But don't be confused by BlockPos -- it just contains x, y, and z which are directly accessible if you need it.

Cheers guys! Got it working. I needed to use .add(x,y,z) in conjunction with .offset(facing) to achieve several blocks being placed at once.

If anyone else sees this (and for clear clarification for what I was looking for) this is the code necessary to place multiple blocks.

public static BlockPos pos1; //creates a variable for holding second BlockPos

public EnumActionResult onItemUse(...){ //Standard setup
	pos = pos.offset(facing); //fetch the current BlockPos the player is facing
  	pos1 = pos.add(1, 0, 0) //set BlockPos 1 to the right (east, x)
	worldIn.setBlockState(pos, ...); //set the block infront of player to whatever
  	worldIn.setBlockSate(pos1, ...); //set the block to the new BlockPos position (i.e. 1 to the right) to whatever.

Obviously use

 if(worldIn.isAirBlock(pos)){...}

to test to see if the new location can have a block placed, otherwise without this a block will be replaced which is incorrect (unless that is what you're looking for). And do this every time you need to place a new block that is at offset to the original location.

 

I hope this helps anyone else, I know it definitely did for me.

 

Thanks.

Also while this topic is still open, how do I get the player facing direction so i can have something like

if(player facing north or south){...}

if(player facing east or west){...}

I thought it was something to do with EnumFacing but that doesn't seem to be the case.

8 minutes ago, Blu_Nighttime said:

Also while this topic is still open, how do I get the player facing direction so i can have something like

if(player facing north or south){...}

if(player facing east or west){...}

I thought it was something to do with EnumFacing but that doesn't seem to be the case.

Entity(something)#getHorizontalFacing

Great, I knew it had something to do with player and EnumFacing but wasn't sure what else is was missing. Looks something like this:

if(player.getHorizontalFacing == EnumFacing.NORTH || player.getHorizonalFacing == EnumFacing.SOUTH){...} //Likewise with West and East

(For other people's referencing).

 

Thanks guys, I know all of this is already in Forge and the declaration can be viewed in eclipse but sometimes it's so hard to know exactly what you're looking for that a few quick points like this is all you need.

 

Thanks.

5 hours ago, Blu_Nighttime said:

pos1 = pos.add(1, 0, 0) //set BlockPos 1 to the right (east, x)

 

Usually you want to do something more like pos1 = pos.rotateY(); //North -> East -> South -> West -> North