HTML5FrontEnd: Add platform and mobile detection

flixel/system/frontEnds/HTML5FrontEnd.hx

@@ -1,27 +1,35 @@
 package flixel.system.frontEnds;
 
 import flixel.math.FlxPoint;
+import flixel.util.FlxStringUtil;
 
 #if js
 import js.Browser;
 
 class HTML5FrontEnd
 {
-	public var browser(get, never):FlxBrowser;
-	public var browserWidth(get, never):Int;
-	public var browserHeight(get, never):Int;
+	public var browser(default, null):FlxBrowser;
+	public var browserWidth(get, null):Int;
+	public var browserHeight(get, null):Int;
 	public var browserPosition(get, null):FlxPoint;
+	public var platform(default, null):FlxPlatform;
+	public var isMobile(default, null):Bool;
 
 	@:allow(flixel.FlxG)
-	private function new() {}
+	private function new()
+	{
+		browser = getBrowser();
+		platform = getPlatform();
+		isMobile = getIsMobile();
+	}
 
-	private function get_browser():FlxBrowser
+	private function getBrowser():FlxBrowser
 	{
-		if (Browser.navigator.userAgent.indexOf(" OPR/") > -1)
+		if (userAgentContains(" OPR/"))
 		{
 			return OPERA;
 		}
-		else if (Browser.navigator.userAgent.toLowerCase().indexOf("chrome") > -1)
+		else if (userAgentContains("chrome", true))
 		{
 			return CHROME;
 		}
@@ -37,7 +45,7 @@ class HTML5FrontEnd
 		{
 			return SAFARI;
 		}
-		return UNKNOWN;
+		return FlxBrowser.UNKNOWN;
 	}
 
 	private function get_browserPosition():FlxPoint
@@ -59,6 +67,56 @@ class HTML5FrontEnd
 	{
 		return Browser.window.innerHeight;
 	}
+
+	private function getPlatform():FlxPlatform
+	{
+
+		if (userAgentContains("Win"))
+		{
+			return WINDOWS;
+		}
+		else if (userAgentContains("Linux")
+		&& !userAgentContains("Android"))
+		{
+			return LINUX;
+		}
+		else if (userAgentContains("X11"))
+		{
+			return UNIX;
+		}
+		else if (userAgentContains("Android"))
+		{
+			return ANDROID;
+		}
+		else if (userAgentContains("BlackBerry"))
+		{
+			return BLACKBERRY;
+		}
+		else if (userAgentContains("iPhone")
+		|| userAgentContains("iPad")
+		|| userAgentContains("iPod"))
+		{
+			return IOS;
+		}
+		else if (userAgentContains("IEMobile"))
+		{
+			return WINDOWS_PHONE;
+		}
+		else return FlxPlatform.UNKNOWN;
+	}
+
+	private inline function getIsMobile():Bool 
+	{
+		return platform == ANDROID || platform == BLACKBERRY || platform == IOS || platform == WINDOWS_PHONE;
+	}
+
+	private inline function userAgentContains(substring:String, toLowerCase:Bool = false)
+	{
+		var userAgent = Browser.navigator.userAgent;
+		if (toLowerCase)
+			userAgent = userAgent.toLowerCase();
+		return FlxStringUtil.contains(userAgent, substring);
+	}
 }
 
 enum FlxBrowser
@@ -70,4 +128,17 @@ enum FlxBrowser
 	OPERA;
 	UNKNOWN;
 }
+
+enum FlxPlatform
+{
+	WINDOWS;
+	LINUX;
+	UNIX;
+	MAC;
+	ANDROID;
+	BLACKBERRY;
+	WINDOWS_PHONE;
+	IOS;
+	UNKNOWN;
+}
 #end