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# Voerbak
Here's the source for voerbak, this project's connect 4 engine. The name comes
from an abbreviation for the Dutch word for connect 4: Vier Op Een Rij -> VOER +
bak = voerbak
Voerbak uses a 1-dimensional array for storing the playfield, and it's printed
after every move. The ordering is left to right, then bottom to top:
| 35 | 36 | 37 | 38 | 39 | 40 | 41 |
| -- | -- | -- | -- | -- | -- | -- |
| 28 | 29 | 30 | 31 | 32 | 33 | 34 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 |
Voerbak is used in this project using api/game/voerbak_connector.py
## Building
```sh
make
```
## Input
Voerbak takes moves seperated by newlines from stdin. An example game would look
like this:
```sh
echo "4,3,3,2,1,2,2,7,1,7,1,7,1" | sed "s/,/\n/g" | ./voerbak
# ^ convert "," to newline
```
## Output
Voerbak outputs special messages in this format:
```
e:full
^ \__/
| |
| message (without spaces)
|
message type
```
Message reference:
| type | name | messages |
| ---- | ------ | --------------------------------------------- |
| d | draw | full = board is full |
| e | errors | full = column is full |
| m | move | true |
| w | win | int-int = board indices where 4 was connected |
## Command-line arguments
```sh
$ ./voerbak --help
Usage: voerbak [OPTION...] arguments
Connect 4 engine
-c, --solver=NAME Solver used for computing moves (unset is two
humans playing)
-h, --height=HEIGHT Field height (rows)
-v, --verbosity=LEVEL Verbosity, 0 = none (default), 1 = info, 2 =
debug
-w, --width=WIDTH Field width (columns)
-?, --help Give this help list
--usage Give a short usage message
-V, --version Print program version
Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.
Report bugs to https://github.com/lonkaars/po-4-op-een-rij/.
```
|