PROTOCOL_VERSION, test items, MOTD fix (#18)

* Cleaned up protocol selection.

* cmake now works even if protocol option is omitted
* make now supports protocol selection
* removed PACKET_VERSION/CNPROTO_VERSION* redundancy
* ubuntu appveyor script has yet to be written
* cleaned up some trailing spaces

* Add some test items.

Ironically, this change is untested.

* [bugfix] Transmit MOTD when entering the game, not when loading screen fades.

This fixes unnecessary retransmission when /warping.

src/CNStructs.hpp

@@ -1,4 +1,4 @@
-/* 
+/*
     CNStructs.hpp - defines some basic structs & useful methods for packets used by FusionFall based on the version defined
 */
 
@@ -21,9 +21,9 @@
     #include <time.h>
 #endif
 #include <cstring>
-#include <string> 
-#include <locale> 
-#include <codecvt> 
+#include <string>
+#include <locale>
+#include <codecvt>
 
 // TODO: rewrite U16toU8 & U8toU16 to not use codecvt
 
@@ -31,18 +31,15 @@ std::string U16toU8(char16_t* src);
 int U8toU16(std::string src, char16_t* des); // returns number of char16_t that was written at des
 uint64_t getTime();
 
-// The CNPROTO_OVERRIDE definition is defined by cmake if you use it.
-// If you don't use cmake, feel free to comment this out and change it around.
-// Otherwise, use the PACKET_VERSION option (e.g. -DPACKET_VERSION=0104 in the cmake command) to change it.
-#if !defined(CNPROTO_OVERRIDE)
-    //#define CNPROTO_VERSION_0728
-    #define CNPROTO_VERSION_0104
-#endif
-
-#if defined(CNPROTO_VERSION_0104)
-    #include "structs/0104.hpp"
-#elif defined(CNPROTO_VERSION_0728)
+// The PROTOCOL_VERSION definition is defined by the build system.
+#if !defined(PROTOCOL_VERSION)
+    #error "PROTOCOL_VERSION not defined"
+#elif PROTOCOL_VERSION == 728
     #include "structs/0728.hpp"
+#elif PROTOCOL_VERSION == 104
+    #include "structs/0104.hpp"
+#else
+    #error Invalid PROTOCOL_VERSION
 #endif
 
 #endif