# HG changeset patch
# User rubidium <rubidium@openttd.org>
# Date 2010-08-23 23:49:14
# Node ID 089431d6de3534d54e5e2a223d9ce171b5342475
# Parent  15890df0069bdbfc8a308b2631ca1fdf9fc4f538

(svn r20607) -Fix: retain information about all base sets that are found and not only the latest version. This to stop confusing people that use newer versions of the base sets than those available via BaNaNaS.

diff --git a/src/base_media_base.h b/src/base_media_base.h
--- a/src/base_media_base.h
+++ b/src/base_media_base.h
@@ -147,6 +147,7 @@ template <class Tbase_set>
 class BaseMedia : FileScanner {
 protected:
 	static Tbase_set *available_sets; ///< All available sets
+	static Tbase_set *duplicate_sets; ///< All sets that aren't available, but needed for not downloading base sets when a newer version than the one on BaNaNaS is loaded.
 	static const Tbase_set *used_set; ///< The currently used set
 
 	/* virtual */ bool AddFile(const char *filename, size_t basepath_length);
diff --git a/src/base_media_func.h b/src/base_media_func.h
--- a/src/base_media_func.h
+++ b/src/base_media_func.h
@@ -17,6 +17,7 @@
 template <class Tbase_set> /* static */ const char *BaseMedia<Tbase_set>::ini_set;
 template <class Tbase_set> /* static */ const Tbase_set *BaseMedia<Tbase_set>::used_set;
 template <class Tbase_set> /* static */ Tbase_set *BaseMedia<Tbase_set>::available_sets;
+template <class Tbase_set> /* static */ Tbase_set *BaseMedia<Tbase_set>::duplicate_sets;
 
 /**
  * Try to read a single piece of metadata and return false if it doesn't exist.
@@ -169,15 +170,14 @@ bool BaseMedia<Tbase_set>::AddFile(const
 			if ((duplicate->valid_files == set->valid_files && duplicate->version >= set->version) ||
 					duplicate->valid_files > set->valid_files) {
 				DEBUG(grf, 1, "Not adding %s (%i) as base " SET_TYPE " set (duplicate)", set->name, set->version);
-				delete set;
+				set->next = BaseMedia<Tbase_set>::duplicate_sets;
+				BaseMedia<Tbase_set>::duplicate_sets = set;
 			} else {
 				Tbase_set **prev = &BaseMedia<Tbase_set>::available_sets;
 				while (*prev != duplicate) prev = &(*prev)->next;
 
 				*prev = set;
 				set->next = duplicate->next;
-				/* don't allow recursive delete of all remaining items */
-				duplicate->next = NULL;
 
 				/* If the duplicate set is currently used (due to rescanning this can happen)
 				 * update the currently used set to the new one. This will 'lie' about the
@@ -185,7 +185,8 @@ bool BaseMedia<Tbase_set>::AddFile(const
 				if (BaseMedia<Tbase_set>::used_set == duplicate) BaseMedia<Tbase_set>::used_set = set;
 
 				DEBUG(grf, 1, "Removing %s (%i) as base " SET_TYPE " set (duplicate)", duplicate->name, duplicate->version);
-				delete duplicate;
+				duplicate->next = BaseMedia<Tbase_set>::duplicate_sets;
+				BaseMedia<Tbase_set>::duplicate_sets = duplicate;
 				ret = true;
 			}
 		} else {
@@ -254,10 +255,9 @@ template <class Tbase_set>
 #if defined(ENABLE_NETWORK)
 #include "network/network_content.h"
 
-template <class Tbase_set>
-/* static */ bool BaseMedia<Tbase_set>::HasSet(const ContentInfo *ci, bool md5sum)
+template <class Tbase_set> bool HasBaseSet(const ContentInfo *ci, bool md5sum, const Tbase_set *s)
 {
-	for (const Tbase_set *s = BaseMedia<Tbase_set>::available_sets; s != NULL; s = s->next) {
+	for (; s != NULL; s = s->next) {
 		if (s->GetNumMissing() != 0) continue;
 
 		if (s->shortname != ci->unique_id) continue;
@@ -276,6 +276,13 @@ template <class Tbase_set>
 	return false;
 }
 
+template <class Tbase_set>
+/* static */ bool BaseMedia<Tbase_set>::HasSet(const ContentInfo *ci, bool md5sum)
+{
+	return HasBaseSet(ci, md5sum, BaseMedia<Tbase_set>::available_sets) ||
+			HasBaseSet(ci, md5sum, BaseMedia<Tbase_set>::duplicate_sets);
+}
+
 #else
 
 template <class Tbase_set>