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lihzahrd/docs/html/_sources/usage.rst.txt

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.. currentmodule:: lihzahrd
Usage guide
====================================
Prerequisites
------------------------------------
To use ``lihzahrd``, you need Python 3.7 or higher.
That's it! No other packages are required!
Installing
------------------------------------
You can download (or update) the package with ``pip`` by entering in your terminal: ::
python3.7 -m pip install --upgrade lihzahrd
Opening a world
------------------------------------
To open a Terraria world file named ``terra.wld`` located in the current working directory, you should import the
:py:mod:`lihzahrd` package and then call the :py:meth:`World.create_from_file` function: ::
import lihzahrd
world = lihzahrd.World.create_from_file("terra.wld")
It should take **a few minutes**, depending on the size of the world, and then return a
:py:class:`World` object.
Accessing the world properties
------------------------------------
Most of the world properties are accessible directly as attributes of the :py:class:`World` object: ::
print(world.name)
# "Terra"
print(world.is_hardmode)
# False
print(world.spawn_point)
# Coordinates(2101, 246)
Some world properties may be grouped in other objects: ::
print(world.bosses_defeated)
# <BossesDefeated>
print(world.bosses_defeated.eye_of_cthulhu)
# False
You can look at the :py:class:`World` class documentation or use an IDE that supports type annotations
(such as `PyCharm <https://www.jetbrains.com/pycharm/>`_) to find all available attributes.
Accessing the tile data
------------------------------------
All :py:class:`tiles.Tile` are stored in the :py:class:`tiles.TileMatrix` accessible at the :py:attr:`World.tiles`
attribute. ::
print(world.tiles)
# <TileMatrix 4200x1200>
You can access them by using the ``tiles`` attribute as a two-dimensional array, where (0, 0) is the top-left block: ::
print(world.tiles[0, 0])
# <Tile>
You can also use :py:class:`fileutils.Coordinates` instead of a :py:class:`tuple` to fetch a specific tile: ::
print(world.tiles[lihzahrd.fileutils.Coordinates(2000, 1000)])
# <Tile B>
print(world.tiles[world.spawn_point])
# <Tile B>
Counting tiles from the bottom-right is possible too: ::
print(world.tiles[-1, -1])
# <Tile>
A single :py:class:`tiles.Tile` has five attributes that you can access:
* :py:attr:`tiles.Tile.block`, the foreground :py:class:`tiles.Block`;
* :py:attr:`tiles.Tile.wall`, the background :py:class:`tiles.Wall`;
* :py:attr:`tiles.Tile.liquid`, the :py:class:`tiles.Liquid` present in that tile;
* :py:attr:`tiles.Tile.wiring`, the colored wires and actuators (:py:class:`tiles.Wiring`);
* :py:attr:`tiles.Tile.extra`, additional data about the block present at that tile, such as the contents of a chest.
All of these attributes may be :py:const:`None` if the property isn't applicable for the tile:
for example, :py:attr:`tiles.Tile.block` is :py:const:`None` if there is no block ("air") placed there.
Accessing extra data
------------------------------------
Extra data, such as the content of chests or the text of signs, may be accessed in two different ways:
* Through the :py:attr:`tiles.Tile.extra` attribute: ::
print(world.tiles[2893, 1074].extra)
# <Chest '' at 2893, 1074>
* Through the various lists available in the :py:class:`World` class, such as :py:attr:`World.chests`: ::
print(world.chests[0])
# <Chest '' at 2893, 1074>
Both ways return the same object, but one may be faster than the other, depending on your use case: ::
print(world.tiles[2893, 1074].extra is world.chests[0])
# True
Something else
------------------------------------
All information included in a Terraria savefile is parsed in this package and made available in the :py:class:`World`
object.
If you couldn't find what you needed in this short usage guide, check the API Reference or have a look at the
`source code <https://github.com/Steffo99/lihzahrd/tree/master/lihzahrd>`_ !