1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
<?php
namespace GameBoy\Canvas;
use GameBoy\Settings;
class TerminalCanvas implements DrawContextInterface
{
/**
* The blank brailler char
* @var String
*/
protected $brailleCharOffset;
protected $canvas;
/**
* If is a color enabled canvas, set to true
* @var Boolean
*/
public $colorEnabled = false;
protected $currentSecond = 0;
protected $framesInSecond = 0;
protected $fps = 0;
protected $height = 0;
protected $lastFrame;
protected $lastFrameCanvasBuffer;
/**
* Braille Pixel Matrix
* ,___,
* |1 4|
* |2 5|
* |3 6|
* |7 8|
* `````
* @var Array
*/
protected $pixelMap;
protected $width = 0;
public function __construct()
{
$this->brailleCharOffset = html_entity_decode('&#' . (0x2800) . ';', ENT_NOQUOTES, 'UTF-8');
$this->pixelMap = [
[html_entity_decode('&#' . (0x2801) . ';', ENT_NOQUOTES, 'UTF-8'), html_entity_decode('&#' . (0x2808) . ';', ENT_NOQUOTES, 'UTF-8')],
[html_entity_decode('&#' . (0x2802) . ';', ENT_NOQUOTES, 'UTF-8'), html_entity_decode('&#' . (0x2810) . ';', ENT_NOQUOTES, 'UTF-8')],
[html_entity_decode('&#' . (0x2804) . ';', ENT_NOQUOTES, 'UTF-8'), html_entity_decode('&#' . (0x2820) . ';', ENT_NOQUOTES, 'UTF-8')],
[html_entity_decode('&#' . (0x2840) . ';', ENT_NOQUOTES, 'UTF-8'), html_entity_decode('&#' . (0x2880) . ';', ENT_NOQUOTES, 'UTF-8')],
];
}
/**
* Draw image on canvas using braille font.
*
* @param object $canvasBuffer $data = Each pixel (true/false)
*/
public function draw($canvasBuffer)
{
//Calculate current FPS
if ($this->currentSecond != time()) {
$this->fps = $this->framesInSecond;
$this->currentSecond = time();
$this->framesInSecond = 1;
} else {
++$this->framesInSecond;
}
//If the last frame changed, we draw
// @TODO - The FPS will be wrong, need to find a way to update
// without redraw
if ($canvasBuffer != $this->lastFrameCanvasBuffer) {
// Array with all braille chars of the frame, filled with the blank char
// 2880 = total braille chars per frame
$chars = array_fill(0, 2880, $this->brailleCharOffset);
// Turn on the first and last pixels
$chars[0] |= $this->pixelMap[0][0];
$chars[2879] |= $this->pixelMap[0][0];
// Frame string - It's a big braille chars string
$frame = '';
for ($y = 0; $y < 144; $y++) {
for ($x = 0; $x < 160; $x++) {
$pixelCanvasNumber = $x + (160 * $y);
$charPosition = floor($x / 2) + (floor($y / 4) * 80);
if (isset($canvasBuffer[$pixelCanvasNumber]) && $canvasBuffer[$pixelCanvasNumber]) {
$chars[$charPosition] |= $this->pixelMap[$y % 4][$x % 2];
}
// Each braille frame has 8 pixels, when we reach the last pixel,
// we can append to the frame string
if ($x % 2 === 1 && $y % 4 === 3) {
$frame .= $chars[$charPosition];
if ($x % 159 === 0) {
$frame .= PHP_EOL;
}
}
}
}
$this->lastFrame = $frame;
$this->lastFrameCanvasBuffer = $canvasBuffer;
$content = "\e[H\e[2J";
if ($this->height > 0 && $this->width > 0) {
$content = "\e[{$this->height}A\e[{$this->width}D";
}
$content .= sprintf('FPS: %3d - Frame Skip: %3d' . PHP_EOL, $this->fps, Settings::$frameskipAmout) . $frame;
echo $content;
$this->height = 37;
$this->width = 80;
}
}
}
|
