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python-computer-craft

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Pythonization of ComputerCraft Minecraft mod. Write Python instead Lua!

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# Pythonized CC Tweaked (ComputerCraft) API

**Warning**: CPython can't build safe sandboxes for arbitrary untrusted code
[(read more)](https://nedbatchelder.com/blog/201206/eval_really_is_dangerous.html).
Never use code in this repo if you don't trust your players!

1. Before you start Minecraft, enable localhost in mod server config

In case of singleplayer it's located inside your saves folder.
    In case of multiplayer check your server folder.

Edit `computercraft-server.toml`

```toml
    [[http.rules]]
		host = "$private"
		action = "allow"  # change here deny to allow
    ```

2. Install & start python language server

```sh
    python -m pip install computercraft
    python -m computercraft.server
    ```

3. Start Minecraft, open up any computer and type:

```sh
    wget http://127.0.0.1:8000 py
    py
    ```

Now you have python REPL in computercraft!
    To quit REPL type `exit()` and press enter.

To run any program:

```sh
    py program.py  # relative to current dir
    py /path/to/program.py
    ```

`py` is short Lua program that interacts with the server.
`cc` module contains almost everything *as is* in ComputerCraft documentation:

```python
from cc import disk, os

disk.eject('right')
print(os.getComputerLabel())
```

Opening a file:

```python
from cc import fs

with fs.open('filename', 'r') as f:
    for line in f:
        print(line)
```

Waiting for event (`os.captureEvent` instead `os.pullEvent`):

```python
from cc import os

timer_id = os.startTimer(2)
for e in os.captureEvent('timer'):
    if e[0] == timer_id:
        print('Timer reached')
        break
```

Using modems:

```python
from cc import peripheral

modem = peripheral.wrap('back')
listen_channel = 5
# this automatically opens and closes modem on listen_channel
for msg in modem.receive(listen_channel):
    print(repr(msg))
    if msg.content == 'stop':
        break
    else:
        modem.transmit(msg.reply_channel, listen_channel, msg.content)
```

Using parallel:

```python
from cc import parallel, os

def fn():
    os.sleep(2)
    print('done')

parallel.waitForAll(fn, fn, fn)
```

Importing in-game files as modules:

```python
from cc import import_file

p = import_file('/disk/program.py')  # absolute
m = import_file('lib.py', __file__)  # relative to current file
```

More examples can be found in this repository: `examples/` and `tests/cc_programs/`

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