fix DrawText func && add enum with text encoding && update manual && other

src/graphic.h

@@ -24,6 +24,13 @@ enum TextScale
 	TextScale_SIZE_64x128  // 8x 8x16
 };
 
+enum DrawTextEncoding
+{
+	cp866 = 1,
+	utf8 = 3,
+	utf16 = 4
+};
+
 int syscalls_drawLine(lua_State* L);
 int syscalls_drawText(lua_State* L);
 int syscalls_drawRectangle(lua_State* L);
@@ -85,4 +92,22 @@ inline void syscalls_push_textSizes(lua_State* L)
 	lua_setfield(L, -2, "textSize");
 }
 
-#endif // __GRAPHIC_H__
+inline void syscalls_push_Encoding(lua_State* L)
+{
+	lua_newtable(L);
+
+	lua_pushinteger(L, cp866);
+	lua_setfield(L, -2, "cp866");
+
+	lua_pushinteger(L, utf8);
+	lua_setfield(L, -2, "utf8");
+
+	lua_pushinteger(L, utf16);
+	lua_setfield(L, -2, "utf16");
+
+	lua_setfield(L, -2, "Encoding");
+}
+
+#define syscalls_push_graphic(L) syscalls_push_textSizes(L); syscalls_push_Encoding(L);
+
+#endif // __GRAPHIC_H__