From 04b6a442e77073cbe0c99f3f343a737d471c3312 Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Mon, 23 Jan 2017 23:09:41 +0100
Subject: [PATCH] added separate functions to determine local and global level
 template file

---
 src/files.c          | 62 ++++++++++++++++++++++++++++----------------
 src/files.h          |  2 ++
 src/libgame/system.h |  1 +
 3 files changed, 43 insertions(+), 22 deletions(-)

diff --git a/src/files.c b/src/files.c
index eb33f7dc..b5f5fc7c 100644
--- a/src/files.c
+++ b/src/files.c
@@ -1861,13 +1861,15 @@ static void ActivateLevelTemplate()
 
 static char *getLevelFilenameFromBasename(char *basename)
 {
-  static char *filename = NULL;
+  /* use different slots for level template files and regular level files */
+  static char *filename[2] = { NULL, NULL };
+  int pos = (strEqual(basename, LEVELTEMPLATE_FILENAME) ? 0 : 1);
 
-  checked_free(filename);
+  checked_free(filename[pos]);
 
-  filename = getPath2(getCurrentLevelDir(), basename);
+  filename[pos] = getPath2(getCurrentLevelDir(), basename);
 
-  return filename;
+  return filename[pos];
 }
 
 static int getFileTypeFromBasename(char *basename)
@@ -1921,7 +1923,7 @@ static char *getSingleLevelBasenameExt(int nr, char *extension)
   static char basename[MAX_FILENAME_LEN];
 
   if (nr < 0)
-    sprintf(basename, "template.%s", extension);
+    sprintf(basename, "%s", LEVELTEMPLATE_FILENAME);
   else
     sprintf(basename, "%03d.%s", nr, extension);
 
@@ -2053,31 +2055,47 @@ static int getFiletypeFromID(char *filetype_id)
   return filetype;
 }
 
-static void determineLevelFileInfo_Filename(struct LevelFileInfo *lfi)
+char *getLocalLevelTemplateFilename()
 {
-  int nr = lfi->nr;
+  return getDefaultLevelFilename(-1);
+}
 
-  /* special case: level number is negative => check for level template file */
-  if (nr < 0)
+char *getGlobalLevelTemplateFilename()
+{
+  /* global variable "leveldir_current" must be modified in the loop below */
+  LevelDirTree *leveldir_current_last = leveldir_current;
+  char *filename = NULL;
+
+  /* check for template level in path from current to topmost tree node */
+
+  while (leveldir_current != NULL)
   {
-    /* global variable "leveldir_current" must be modified in the loop below */
-    LevelDirTree *leveldir_current_last = leveldir_current;
+    filename = getDefaultLevelFilename(-1);
 
-    /* check for template level in path from current to topmost tree node */
+    if (fileExists(filename))
+      break;
 
-    while (leveldir_current != NULL)
-    {
-      setLevelFileInfo_FormatLevelFilename(lfi, LEVEL_FILE_TYPE_RND,
-					   "template.%s", LEVELFILE_EXTENSION);
+    leveldir_current = leveldir_current->node_parent;
+  }
 
-      if (fileExists(lfi->filename))
-	break;
+  /* restore global variable "leveldir_current" modified in above loop */
+  leveldir_current = leveldir_current_last;
 
-      leveldir_current = leveldir_current->node_parent;
-    }
+  return filename;
+}
+
+static void determineLevelFileInfo_Filename(struct LevelFileInfo *lfi)
+{
+  int nr = lfi->nr;
+
+  /* special case: level number is negative => check for level template file */
+  if (nr < 0)
+  {
+    setLevelFileInfo_FormatLevelFilename(lfi, LEVEL_FILE_TYPE_RND,
+					 getSingleLevelBasename(-1));
 
-    /* restore global variable "leveldir_current" modified in above loop */
-    leveldir_current = leveldir_current_last;
+    /* replace local level template filename with global template filename */
+    lfi->filename = getGlobalLevelTemplateFilename();
 
     /* no fallback if template file not existing */
     return;
diff --git a/src/files.h b/src/files.h
index 1bb53808..46dcae9c 100644
--- a/src/files.h
+++ b/src/files.h
@@ -30,6 +30,8 @@ void setElementChangeInfoToDefaults(struct ElementChangeInfo *);
 void copyElementInfo(struct ElementInfo *, struct ElementInfo *);
 
 char *getDefaultLevelFilename(int);
+char *getLocalLevelTemplateFilename();
+char *getGlobalLevelTemplateFilename();
 
 void LoadLevelFromFilename(struct LevelInfo *, char *);
 void LoadLevel(int);
diff --git a/src/libgame/system.h b/src/libgame/system.h
index fb209d30..25be3c85 100644
--- a/src/libgame/system.h
+++ b/src/libgame/system.h
@@ -508,6 +508,7 @@
 #define SOUNDSINFO_FILENAME	"soundsinfo.conf"
 #define MUSICINFO_FILENAME	"musicinfo.conf"
 #define ARTWORKINFO_CACHE_FILE	"artworkinfo.cache"
+#define LEVELTEMPLATE_FILENAME	"template.level"
 #define LEVELFILE_EXTENSION	"level"
 #define TAPEFILE_EXTENSION	"tape"
 #define SCOREFILE_EXTENSION	"score"
-- 
2.34.1