From 3af17f639646cda1382de0d43075238e750b7ec6 Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Sun, 18 Oct 2020 02:16:29 +0200
Subject: [PATCH] added support for loading and saving number of currently
 active user

---
 src/init.c           |  2 ++
 src/libgame/setup.c  | 64 ++++++++++++++++++++++++++++++++++++++++++++
 src/libgame/setup.h  |  3 +++
 src/libgame/system.h |  4 +++
 4 files changed, 73 insertions(+)

diff --git a/src/init.c b/src/init.c
index 008db40c..38142326 100644
--- a/src/init.c
+++ b/src/init.c
@@ -5184,6 +5184,8 @@ static void Execute_Command(char *command)
 
 static void InitSetup(void)
 {
+  LoadUserSetup();				// global user number
+
   LoadSetup();					// global setup info
   LoadSetup_AutoSetup();			// global auto setup info
 
diff --git a/src/libgame/setup.c b/src/libgame/setup.c
index 74c21fe3..5deb511f 100644
--- a/src/libgame/setup.c
+++ b/src/libgame/setup.c
@@ -2364,6 +2364,7 @@ SetupFileHash *loadSetupFileHash(char *filename)
 #define TOKEN_STR_LAST_LEVEL_SERIES		"last_level_series"
 #define TOKEN_STR_LAST_PLAYED_LEVEL		"last_played_level"
 #define TOKEN_STR_HANDICAP_LEVEL		"handicap_level"
+#define TOKEN_STR_LAST_USER			"last_user"
 
 // level directory info
 #define LEVELINFO_TOKEN_IDENTIFIER		0
@@ -4726,3 +4727,66 @@ void LevelStats_incSolved(int nr)
   if (nr >= 0 && nr < MAX_LEVELS)
     level_stats[nr].solved++;
 }
+
+void LoadUserSetup(void)
+{
+  // --------------------------------------------------------------------------
+  // ~/.<program>/usersetup.conf
+  // --------------------------------------------------------------------------
+
+  char *filename = getPath2(getMainUserGameDataDir(), USERSETUP_FILENAME);
+  SetupFileHash *user_setup_hash = NULL;
+
+  // always start with reliable default values
+  user.nr = 0;
+
+  if ((user_setup_hash = loadSetupFileHash(filename)))
+  {
+    char *token_value;
+
+    // get last selected user number
+    token_value = getHashEntry(user_setup_hash, TOKEN_STR_LAST_USER);
+
+    if (token_value)
+      user.nr = MIN(MAX(0, atoi(token_value)), MAX_PLAYER_NAMES - 1);
+
+    freeSetupFileHash(user_setup_hash);
+  }
+  else
+  {
+    Debug("setup", "using default setup values");
+  }
+
+  free(filename);
+}
+
+void SaveUserSetup(void)
+{
+  // --------------------------------------------------------------------------
+  // ~/.<program>/usersetup.conf
+  // --------------------------------------------------------------------------
+
+  char *filename = getPath2(getMainUserGameDataDir(), USERSETUP_FILENAME);
+  FILE *file;
+
+  InitMainUserDataDirectory();
+
+  if (!(file = fopen(filename, MODE_WRITE)))
+  {
+    Warn("cannot write setup file '%s'", filename);
+
+    free(filename);
+
+    return;
+  }
+
+  fprintFileHeader(file, USERSETUP_FILENAME);
+
+  fprintf(file, "%s\n", getFormattedSetupEntry(TOKEN_STR_LAST_USER,
+					       i_to_a(user.nr)));
+  fclose(file);
+
+  SetFilePermissions(filename, PERMS_PRIVATE);
+
+  free(filename);
+}
diff --git a/src/libgame/setup.h b/src/libgame/setup.h
index 425c01fa..211d7614 100644
--- a/src/libgame/setup.h
+++ b/src/libgame/setup.h
@@ -356,4 +356,7 @@ void LevelStats_setSolved(int, int);
 void LevelStats_incPlayed(int);
 void LevelStats_incSolved(int);
 
+void LoadUserSetup(void);
+void SaveUserSetup(void);
+
 #endif // MISC_H
diff --git a/src/libgame/system.h b/src/libgame/system.h
index 48a03fc1..2011aaac 100644
--- a/src/libgame/system.h
+++ b/src/libgame/system.h
@@ -510,6 +510,9 @@
 // maximum number of parallel players supported by libgame functions
 #define MAX_PLAYERS		4
 
+// maximum number of player names
+#define MAX_PLAYER_NAMES	10
+
 // maximum allowed length of player name
 #define MAX_PLAYER_NAME_LEN	10
 
@@ -646,6 +649,7 @@
 // file names and filename extensions
 #define LEVELSETUP_DIRECTORY	"levelsetup"
 #define SETUP_FILENAME		"setup.conf"
+#define USERSETUP_FILENAME	"usersetup.conf"
 #define AUTOSETUP_FILENAME	"autosetup.conf"
 #define LEVELSETUP_FILENAME	"levelsetup.conf"
 #define EDITORSETUP_FILENAME	"editorsetup.conf"
-- 
2.34.1