Tested on PHP 7 - ~14 FPS

Keyboard working :-)
DR MARIO playable \o/

5 files changed, 73 insertions, 2 deletions

diff --git a/boot.php b/boot.php
index ddc724a..ef2d8b6 100644
--- a/boot.php
+++ b/boot.php
@@ -3,11 +3,14 @@
 require_once __DIR__.'/vendor/autoload.php';
 
 use GameBoy\Core;
+use GameBoy\Keyboard;
 use GameBoy\Settings;
 
 $rom = base64_decode(file_get_contents('drmario.rom'));
 
 $core = new Core($rom);
+$keyboard = new Keyboard($core);
+
 $core->start();
 
 if ($core->stopEmulator & 2 == 2) {
@@ -16,6 +19,7 @@ if ($core->stopEmulator & 2 == 2) {
 
     while (true) {
         $core->run();
+        $keyboard->check();
     }
 } else if (($core->stopEmulator & 2) == 0) {
     echo "The GameBoy core is already running." . PHP_EOL;
diff --git a/docker-php-7 b/docker-php-7
new file mode 100755
index 0000000..11b7def
--- /dev/null
+++ b/docker-php-7
@@ -0,0 +1,2 @@
+#!/bin/bash
+docker run -it -v $PWD:/app -w /app php:cli /bin/bash
diff --git a/src/Gameboy/DrawContext.php b/src/Gameboy/DrawContext.php
index 7a4bbba..4081d69 100644
--- a/src/Gameboy/DrawContext.php
+++ b/src/Gameboy/DrawContext.php
@@ -26,12 +26,13 @@ class DrawContext
 	public function putImageData($canvasBuffer, $left, $top)
     {
         for ($i = 0; $i < count($canvasBuffer); $i = $i + 4) {
-            // IGNORE ALPHA
+            // Sum of all colors, Ignore alpha
             $total = $canvasBuffer[$i] + $canvasBuffer[$i + 1] + $canvasBuffer[$i + 2];
 
             $x = ($i / 4) % 160;
             $y = ceil(($i / 4) / 160);
 
+            // 350 is a good threshold for black and white
             if ($total > 350) {
                 $this->canvas->set($x, $y);
             }
diff --git a/src/Gameboy/Keyboard.php b/src/Gameboy/Keyboard.php
new file mode 100644
index 0000000..8ad007f
--- /dev/null
+++ b/src/Gameboy/Keyboard.php
@@ -0,0 +1,63 @@
+<?php
+namespace GameBoy;
+
+class Keyboard
+{
+    public $core;
+    public $file;
+    public $keyPressing = null;
+    public $started = false;
+
+    public function __construct(Core $core)
+    {
+        $this->core = $core;
+        exec('stty -icanon');
+        $this->file = fopen('php://stdin', 'r');
+        stream_set_blocking($this->file, false);
+    }
+
+    public function check()
+    {
+        $key = fread($this->file, 1);
+
+        if (! empty($key)) {
+            $this->keyDown($key);
+        } else if (! empty($this->keyPressing)) {
+            $this->keyUp($this->keyPressing);
+        }
+
+        $this->keyPressing = $key;
+    }
+
+    public function matchKey($key)
+    {
+        //Maps a keyboard key to a gameboy key.
+        //Order: Right, Left, Up, Down, A, B, Select, Start
+
+        $keyIndex = array_search($key, Settings::$settings[3]);
+
+        if ($keyIndex === false) {
+            return -1;
+        }
+
+        return $keyIndex;
+    }
+
+    public function keyDown($key)
+    {
+        $keyCode = $this->matchKey($key);
+
+        if ($keyCode > -1) {
+            $this->core->JoyPadEvent($keyCode, true);
+        }
+    }
+
+    public function keyUp($key)
+    {
+        $keyCode = $this->matchKey($key);
+
+        if ($keyCode > -1) {
+            $this->core->JoyPadEvent($keyCode, false);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Gameboy/Settings.php b/src/Gameboy/Settings.php
index d08b4db..ba9adab 100644
--- a/src/Gameboy/Settings.php
+++ b/src/Gameboy/Settings.php
@@ -15,7 +15,8 @@ class Settings
 		true,
 
         //[3] - Keyboard button map.
-		[39, 37, 38, 40, 88, 90, 16, 13],
+        //Order: Right, Left, Up, Down, A, B, Select, Start
+		['d', 'a', 'w', 's', ',', '.', 'n', 'm'],
 
         //[4] - Frameskip Amount (Auto frameskip setting allows the script to change this.)
 		0,