Created
February 3, 2013 14:50
-
-
Save redcapital/4702075 to your computer and use it in GitHub Desktop.
Rain in your terminal. Run with `php Rain.php`
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php | |
/** | |
* Renders rain. The code was like 10 times shorter before moving it into the class | |
*/ | |
class Renderer | |
{ | |
protected $width, $height, $text; | |
private $_middle, $_textBeginPos, $_textLength, $_line; | |
private $_resetPos; | |
public function __construct($width, $height, $text) | |
{ | |
$this->width = $width; | |
$this->height = $height; | |
$this->text = $text; | |
} | |
protected function init() | |
{ | |
$this->_middle = (int)floor(($this->height - count($this->text)) / 2); | |
$this->_textParams = array(); | |
foreach ($this->text as $text) { | |
$this->_textParams[] = array( | |
'length' => mb_strlen($text), | |
'pos' => (int)floor(($this->width - mb_strlen($text)) / 2), | |
); | |
} | |
$this->_line = str_repeat(' ', $this->width); | |
$this->_resetPos = `tput cup 0 0`; | |
for ($i = 0; $i < $this->height; $i++) $this->_positions[$i] = array(); | |
$this->_collisions = array(); | |
$this->clearScreen(); | |
} | |
protected function clearScreen() | |
{ | |
echo `tput clear`; | |
} | |
protected function renderFrame() | |
{ | |
echo $this->_resetPos; | |
$lines = array(); | |
for ($i = 0; $i < $this->height; $i++) { | |
$curLine = $this->_line; | |
foreach ($this->_positions[$i] as $p) { | |
$curLine[$p] = '/'; | |
} | |
$lines[] = $curLine; | |
} | |
// Text | |
foreach ($this->_textParams as $i => $params) { | |
$lines[$this->_middle + $i] = substr_replace( | |
$lines[$this->_middle + $i], | |
$this->text[$i], | |
$params['pos'], | |
$params['length'] | |
); | |
} | |
// Collisions | |
foreach ($this->_collisions as $collision) { | |
$lines[$collision[0]][$collision[1]] = '*'; | |
} | |
echo implode("\n", $lines) . "\n"; | |
} | |
protected function nextFrame() | |
{ | |
// Collisions | |
$this->_collisions = array(); | |
foreach ($this->_positions[$this->height - 1] as $p) { | |
$this->_collisions[] = array($this->height - 1, $p); | |
} | |
// Move all drops one line below and shift them to the left | |
for ($i = $this->height - 1; $i > 0; $i--) { | |
$this->_positions[$i] = array(); | |
foreach ($this->_positions[$i - 1] as $p) { | |
if ($p > 0) { | |
$this->_positions[$i][] = $p - 1; | |
} else { | |
$this->_positions[$i][] = $p - 1 + $this->width; | |
} | |
} | |
} | |
// Add a line with random drops to the top | |
$this->_positions[0] = array(); | |
$drops = mt_rand(0, 8); | |
while ($drops--) { | |
$this->_positions[0][] = mt_rand(0, $this->width - 1); | |
} | |
} | |
public function run() | |
{ | |
$this->init(); | |
// Initial rain lines | |
for ($i = 0; $i < $this->height - 10; $i++) $this->nextFrame(); | |
while (true) { | |
$this->renderFrame(); | |
$this->nextFrame(); | |
usleep(45000); | |
} | |
} | |
} | |
$text = array( | |
'Rain in your terminal', '', | |
'Running on PHP ' . PHP_VERSION | |
); | |
$r = new Renderer(80, 25, $text); | |
$r->run(); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment