[1.8] Creating teleporters

[Jedispencer21]

So I am creating a Teleporter type mod, which adds two types of teleporters. The 'Main Teleporter' which can be used to teleport to any connected 'Teleporter', and The 'Teleporter' which can only be connected to the 'Main Teleporter'. What I am wondering is what would be the best way to make a certain Item be able to link the 'Main Teleporter' and 'Teleporter' so that the owner can teleport between the two.

[RANKSHANK]

I''m guessing you're using tile entities for the teleporters? I'd say use the item to link via a string tag per entity and then use that in a map as keys for the locations. The item wouldn't even need to store the data in this case.

[Jedispencer21]

Another thing I am wondering is how would I make it so that only the person who placed the block is able to destroy it, and what would be a good way to make an item to link the teleporters, yes I am using TileEntities for the teleporters.

[Draco18s]

Another thing I am wondering is how would I make it so that only the person who placed the block is able to destroy it, and what would be a good way to make an item to link the teleporters, yes I am using TileEntities for the teleporters.

 

override getBlockRelativePlayerHardness (iirc the method name correctly, search the Block class)

[Jedispencer21]

So I have this in the tileentity class:

 

 

public class TileEntityMainTeleporter extends TileEntity

{

protected UUID ownerUUID = null;

protected String ownerUsername = "";

 

public void readFromNBT(NBTTagCompound compound)

{

if (compound.hasKey("UUIDLeast", 4) && compound.hasKey("UUIDMost", 4))

{

this.ownerUUID = new UUID(compound.getLong("UUIDLeast"), compound.getLong("UUIDMost"));

}

else

{

this.ownerUUID = null;

}

}

 

public void writeToNBT(NBTTagCompound compound)

{

super.writeToNBT(compound);

 

if (this.ownerUUID != null)

{

compound.setLong("UUIDLeast", this.ownerUUID.getLeastSignificantBits());

compound.setLong("UUIDMost", this.ownerUUID.getMostSignificantBits());

}

}

 

public void setTeleporterOwner(EntityPlayer entityplayer)

{

this.ownerUUID = entityplayer.getUniqueID();

}

 

public UUID getTeleporterOwnerUUID()

{

return this.ownerUUID;

}

}

 

 

and these in the block class:

 

 

public void onBlockPlacedBy(World world, BlockPos pos, IBlockState state, EntityLivingBase placer, ItemStack stack)

{

TileEntity tileentity = world.getTileEntity(pos);

 

if (tileentity instanceof TileEntityMainTeleporter)

{

((TileEntityMainTeleporter) tileentity).setTeleporterOwner((EntityPlayer) placer);

}

}

 

public float getPlayerRelativeBlockHardness(EntityPlayer player, World world, BlockPos pos)

{

TileEntity tileentity = world.getTileEntity(pos);

 

if (tileentity instanceof TileEntityMainTeleporter)

{

TileEntityMainTeleporter tileentitymainteleporter = (TileEntityMainTeleporter) tileentity;

boolean flag = tileentitymainteleporter.getTeleporterOwnerUUID() != null && tileentitymainteleporter.getTeleporterOwnerUUID().equals(player.getUniqueID());

 

if (flag || player.capabilities.isCreativeMode)

{

return super.getPlayerRelativeBlockHardness(player, world, pos);

}

}

 

return -1.0F;

}

 

 

 

Now this works, except every time I log out of the world and come back in, I cannot break the block unless I go into creative.

[Jedispencer21]

No one?

[Draco18s]

You're going to have to debug.  It looks like the UUID isn't saving or loading properly so it ends up as null.

[Jedispencer21]

Ok I will look into that, but about the Item for linking them, whats the best way of doing that?

[Draco18s]

Well, when you right-click the block with the item, store data in the stack's NBT tag.