Change: rebrand 1.12.0 to 12.0

One question that keeps popping up: "when do we release 2.0?".
NewGRF will force that at least 1.16 will be 2.0, but to not wait
for this, let's drop the "1." and be for ever done with that
conversation.

We are following in the footstep of giants here.

src/ai/ai_info.cpp

@@ -25,7 +25,7 @@
  */
 static bool CheckAPIVersion(const char *api_version)
 {
-	static const std::set<std::string> versions = { "0.7", "1.0", "1.1", "1.2", "1.3", "1.4", "1.5", "1.6", "1.7", "1.8", "1.9", "1.10", "1.11", "1.12" };
+	static const std::set<std::string> versions = { "0.7", "1.0", "1.1", "1.2", "1.3", "1.4", "1.5", "1.6", "1.7", "1.8", "1.9", "1.10", "1.11", "12" };
 	return versions.find(api_version) != versions.end();
 }
 

src/game/game_info.cpp

@@ -23,7 +23,7 @@
  */
 static bool CheckAPIVersion(const char *api_version)
 {
-	static const std::set<std::string> versions = { "1.2", "1.3", "1.4", "1.5", "1.6", "1.7", "1.8", "1.9", "1.10", "1.11", "1.12" };
+	static const std::set<std::string> versions = { "1.2", "1.3", "1.4", "1.5", "1.6", "1.7", "1.8", "1.9", "1.10", "1.11", "12" };
 	return versions.find(api_version) != versions.end();
 }
 

src/os/windows/ottdres.rc.in

@@ -77,8 +77,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION ${REV_MAJOR},${REV_MINOR},${REV_BUILD},${REV_ISODATE}
- PRODUCTVERSION ${REV_MAJOR},${REV_MINOR},${REV_BUILD},${REV_ISODATE}
+ FILEVERSION ${REV_MAJOR},${REV_MINOR},0,${REV_ISODATE}
+ PRODUCTVERSION ${REV_MAJOR},${REV_MINOR},0,${REV_ISODATE}
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L

src/rev.cpp.in

@@ -75,14 +75,17 @@ const byte _openttd_revision_tagged = ${REV_ISTAG};
 /**
  * The NewGRF revision of OTTD:
  * bits  meaning.
- * 28-31 major version
- * 24-27 minor version
- * 20-23 build
+ * 24-31 major version + 16
+ * 20-23 minor version
  *    19 1 if it is a release, 0 if it is not.
  *  0-18 used to be the SVN revision, now just last revision before switch to git
  *
  * The 19th bit is there so the development/betas/alpha, etc. leading to a
  * final release will always have a lower version number than the released
  * version, thus making comparisons on specific revisions easy.
+ *
+ * The + 16 for the major version is because we went from 1.11.0 to 12.0, dropping
+ * the "patch" part of the version. To make sure "1.11.0" is smaller than "12.0", we
+ * have to adjust the major by 16.
  */
-const uint32 _openttd_newgrf_version = ${REV_MAJOR} << 28 | ${REV_MINOR} << 24 | ${REV_BUILD} << 20 | ${REV_ISSTABLETAG} << 19 | 28004;
+const uint32 _openttd_newgrf_version = (${REV_MAJOR} + 16) << 24 | ${REV_MINOR} << 20 | ${REV_ISSTABLETAG} << 19 | 28004;

src/script/api/ai_changelog.hpp

@@ -13,7 +13,7 @@
  * functions may still be available if you return an older API version
  * in GetAPIVersion() in info.nut.
  *
- * \b 1.12.0
+ * \b 12.0
  *
  * This version is not yet released. The following changes are not set in stone yet.
  *

src/script/api/game_changelog.hpp

@@ -13,7 +13,7 @@
  * functions may still be available if you return an older API version
  * in GetAPIVersion() in info.nut.
  *
- * \b 1.12.0
+ * \b 12.0
  *
  * This version is not yet released. The following changes are not set in stone yet.
  *

src/script/api/script_controller.hpp

@@ -135,11 +135,20 @@ public:
 	/**
 	 * Get the OpenTTD version of this executable. The version is formatted
 	 * with the bits having the following meaning:
-	 * 28-31 major version
-	 * 24-27 minor version
-	 * 20-23 build
+	 * 24-31 major version + 16.
+	 * 20-23 minor version.
 	 *    19 1 if it is a release, 0 if it is not.
 	 *  0-18 revision number; 0 when the revision is unknown.
+	 * You have to subtract 16 from the major version to get the correct
+	 * value.
+	 *
+	 * Prior to OpenTTD 12, the bits have the following meaning:
+	 * 28-31 major version.
+	 * 24-27 minor version.
+	 * 20-23 build.
+	 *    19 1 if it is a release, 0 if it is not.
+	 *  0-18 revision number; 0 when the revision is unknown.
+	 *
 	 * @return The version in newgrf format.
 	 */
 	static uint GetVersion();