[common] bullet with bricks collision

src/common/haxe/ru/m/Base64.hx

@@ -0,0 +1,49 @@
+package ru.m;
+
+import haxe.io.Bytes;
+import haxe.crypto.BaseCode;
+
+class Base64 {
+    private inline static var BASE64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+    private static var codec:BaseCode;
+
+    public function new() {
+
+    }
+
+    static function getCodec():BaseCode {
+        if (codec == null) {
+            var bytes = Bytes.ofString(BASE64);
+            codec = new BaseCode(bytes);
+        }
+        return codec;
+    }
+
+    public static function encodeBase64(content:haxe.io.Bytes):String {
+        var suffix = switch (content.length % 3){
+            case 2: "=";
+            case 1: "==";
+            default: "";
+        };
+
+        var bytes = getCodec().encodeBytes(content);
+        return bytes.toString() + suffix;
+    }
+
+    private static function removeNullbits(s:String):String {
+        var len = s.length;
+        while (len > 0 && s.charAt(len - 1) == "=") {
+            len--;
+            if (len <= 0) {
+                return "";
+            }
+        }
+        return s.substr(0, len);
+    }
+
+    public static function decodeBase64(content:String):Bytes {
+        var bytes:Bytes = Bytes.ofString(removeNullbits(content));
+        return getCodec().decodeBytes(bytes);
+    }
+
+}