<html>
<head>
<title>Blinker - Tetris</title>
</head>
<body>
<h1>Blinker - Tetris</h1>
<p>
The tetris module provides a tetris game on demand.
If starts when the operator connection for the player is established.
</p>
<h2>Keys</h2>
<p>
The game is controlled via an operator connection, i.e., via telephone
keys. The key have the following functions:
<tr><td><b>key</b></td>
<td width="2em"></td>
<td><b>description</b></td></tr>
<tr><td><code>#</code></td>
<td></td>
<td>leave game</td></tr>
<tr><td><code>*</code></td>
<td></td>
<td>play start sound to inform user about the active game</td></tr>
<tr><td><code>1</code></td>
<td></td>
<td>rotate falling stone left (counter-clock-wise)</td></tr>
<tr><td><code>2</code> / <code>3</code></td>
<td></td>
<td>rotate falling stone right (clock-wise)</td></tr>
<tr><td><code>4</code></td>
<td></td>
<td>move falling stone to the left</td></tr>
<tr><td><code>6</code></td>
<td></td>
<td>move falling stone to the right</td></tr>
<tr><td><code>8</code></td>
<td></td>
<td>drop stone</td></tr>
</table>
</p>
<h2>Configuration</h2>
<p>
The configuration of the tetris module with name <code>NAME</code>
is located in the <code>tetrises/NAME</code> subdirectory.
</p>
<h3>Colors</h3>
<p>
The colors of the background and of the stones are configurable.
They are given in web notation, i.e., as 6 hexadecimal digits -
2 digits for read, green and blue.
