From f4775d06bb53f927ad05c7e6344a4e839c884c44 Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Sun, 21 Oct 2007 14:59:05 +0000
Subject: (svn r11330) -Add: OTTD version checking for NewGRFs. This allows
 NewGRFs to do something different for different versions of OpenTTD, like
 disabling it for too low versions or loading different graphics.

---
 src/lang/english.txt |  1 +
 src/newgrf.cpp       |  8 +++++++-
 src/ottdres.rc.in    |  5 +++--
 src/rev.cpp.in       | 40 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 51 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/lang/english.txt b/src/lang/english.txt
index ad5408f46..44f1d0b22 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -3073,6 +3073,7 @@ STR_NEWGRF_ERROR_UNSET_SWITCH                                   :{STRING} is des
 STR_NEWGRF_ERROR_INVALID_PARAMETER                              :Invalid parameter for {STRING}: parameter {STRING} ({NUM})
 STR_NEWGRF_ERROR_LOAD_BEFORE                                    :{STRING} must be loaded before {STRING}.
 STR_NEWGRF_ERROR_LOAD_AFTER                                     :{STRING} must be loaded after {STRING}.
+STR_NEWGRF_ERROR_OTTD_VERSION_NUMBER                            :{STRING} requires OpenTTD version {STRING} or better.
 STR_NEWGRF_ERROR_AFTER_TRANSLATED_FILE                          :the GRF file it was designed to translate
 
 STR_NEWGRF_ADD                                                  :{BLACK}Add
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 307fc48ed..3cf4334ec 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -3424,6 +3424,11 @@ static uint32 GetParamVal(byte param, uint32 *cond_val)
 		case 0x9E: // Miscellaneous GRF features
 			return _misc_grf_features;
 
+		case 0xA1: { // OpenTTD version
+			extern uint32 _openttd_newgrf_version;
+			return _openttd_newgrf_version;
+		}
+
 		default:
 			/* GRF Parameter */
 			if (param < 0x80) return _cur_grffile->param[param];
@@ -3790,7 +3795,8 @@ static void GRFLoadError(byte *buf, int len)
 		STR_NEWGRF_ERROR_UNSET_SWITCH,
 		STR_NEWGRF_ERROR_INVALID_PARAMETER,
 		STR_NEWGRF_ERROR_LOAD_BEFORE,
-		STR_NEWGRF_ERROR_LOAD_AFTER
+		STR_NEWGRF_ERROR_LOAD_AFTER,
+		STR_NEWGRF_ERROR_OTTD_VERSION_NUMBER,
 	};
 
 	static const StringID sevstr[] = {
diff --git a/src/ottdres.rc.in b/src/ottdres.rc.in
index a75294fe1..72e1d813e 100644
--- a/src/ottdres.rc.in
+++ b/src/ottdres.rc.in
@@ -1,4 +1,5 @@
 //Microsoft Developer Studio generated resource script.
+// $Id$
 //
 #define APSTUDIO_READONLY_SYMBOLS
 /////////////////////////////////////////////////////////////////////////////
@@ -65,8 +66,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 0,5,99,0
- PRODUCTVERSION 0,5,99,0
+ FILEVERSION 0,6,0,@@REVISION@@
+ PRODUCTVERSION 0,6,0,@@REVISION@@
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
diff --git a/src/rev.cpp.in b/src/rev.cpp.in
index badec3c0d..0db42ac60 100644
--- a/src/rev.cpp.in
+++ b/src/rev.cpp.in
@@ -1,4 +1,44 @@
+/* $Id$ */
+
+/** @file rev.cpp Autogenerated file with the revision and such of OpenTTD. */
+
+#include "stdafx.h"
+
+/**
+ * The text version of OpenTTD's revision.
+ * This will be either "<major>.<minor>.<build>[-RC<rc>]",
+ * "r<revision number>[M][-<branch>]" or "norev000".
+ *
+ * The major, minor and build are the numbers that describe releases of
+ * OpenTTD (like 0.5.3). "-RC" is used to flag release candidates.
+ *
+ * The revision number is fairly straight forward. The M is to show that
+ * the binary is made from modified source code. The branch shows the
+ * branch the revision is of and will not be there when it is trunk.
+ *
+ * norev000 is for non-releases that are made on systems without
+ * subversion or sources that are not a checkout of subversion.
+ */
 extern const char _openttd_revision[] = "@@VERSION@@";
+
+/**
+ * The NewGRF revision of OTTD:
+ * bits  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 for releases and when the revision is unknown.
+ *
+ * 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 comparisions on specific revisions easy.
+ */
+uint32 _openttd_newgrf_version = 0 << 28 | 6 << 24 | 0 << 20 | 0 << 19 | (@@REVISION@@ & ((1 << 19) - 1));
+
 #ifdef __MORPHOS__
+/**
+ * Variable used by MorphOS to show the version.
+ */
 extern const char morphos_versions_tag[] = "\\0$VER: OpenTTD @@VERSION@@ (@@DATE@@)  OpenTTD Team [MorphOS, PowerPC]";
 #endif
-- 
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