From: Holger Schemel <info@artsoft.org>
Date: Wed, 19 Aug 2020 22:55:32 +0000 (+0200)
Subject: fixed support for wrap-around levels in EM engine for old tapes
X-Git-Tag: 4.2.0.1^0
X-Git-Url: https://git.artsoft.org/?a=commitdiff_plain;h=04c0f302;p=rocksndiamonds.git

fixed support for wrap-around levels in EM engine for old tapes

When playing tapes that solved wrap-around levels with the EM engine
that were recorded before wrap-around support was added, deactivate
wrap-around to not break old tapes.
---

diff --git a/src/game.c b/src/game.c
index d67a91a0..8c243a49 100644
--- a/src/game.c
+++ b/src/game.c
@@ -2991,6 +2991,9 @@ static void InitGameEngine(void)
   game_em.use_old_explosions =
     (game.engine_version < VERSION_IDENT(4,1,4,2));
 
+  game_em.use_wrap_around =
+    (game.engine_version > VERSION_IDENT(4,1,4,1));
+
   // --------------------------------------------------------------------------
 
   // set maximal allowed number of custom element changes per game frame
diff --git a/src/game_em/convert.c b/src/game_em/convert.c
index 6b09ece6..bae0130c 100644
--- a/src/game_em/convert.c
+++ b/src/game_em/convert.c
@@ -459,6 +459,7 @@ void prepare_em_level(void)
   // - game_em.use_single_button (default: TRUE)
   // - game_em.use_snap_key_bug (default: FALSE)
   // - game_em.use_old_explosions (default: FALSE)
+  // - game_em.use_wrap_around (default: TRUE)
 
   game_em.level_solved = FALSE;
   game_em.game_over = FALSE;
diff --git a/src/game_em/export.h b/src/game_em/export.h
index 4766101b..e1519ea6 100644
--- a/src/game_em/export.h
+++ b/src/game_em/export.h
@@ -46,6 +46,7 @@ struct GameInfo_EM
   boolean use_single_button;
   boolean use_snap_key_bug;
   boolean use_old_explosions;
+  boolean use_wrap_around;
 };
 
 struct LevelInfo_EM
diff --git a/src/game_em/reademc.c b/src/game_em/reademc.c
index 3f366227..1308615c 100644
--- a/src/game_em/reademc.c
+++ b/src/game_em/reademc.c
@@ -293,7 +293,7 @@ void convert_em_level(unsigned char *src, int file_version)
   cav.time_seconds = MIN(GET_BE16(src[2110]), 9999);
   cav.gems_needed = src[2095];
 
-  cav.infinite = TRUE;
+  cav.infinite = game_em.use_wrap_around;
   cav.testmode = FALSE;
   cav.teamwork = (src[2150] & 128) != 0;