added loading and saving visible playfield size from/to tape files

diff --git a/src/files.c b/src/files.c
index 4d2c8c45c7a577336b31ccbe97c72f146e73ecfe..28ae73a23b4b70f06b59f5c892cbb3160d94b8cb 100644 (file)
--- a/src/files.c
+++ b/src/files.c
@@ -59,6 +59,7 @@
 #define TAPE_CHUNK_VERS_SIZE   8       // size of file version chunk
 #define TAPE_CHUNK_HEAD_SIZE   20      // size of tape file header
 #define TAPE_CHUNK_HEAD_UNUSED 1       // unused tape header bytes
+#define TAPE_CHUNK_SCRN_SIZE   2       // size of screen size chunk
 
 #define LEVEL_CHUNK_CNT3_SIZE(x)        (LEVEL_CHUNK_CNT3_HEADER + (x))
 #define LEVEL_CHUNK_CUS3_SIZE(x)        (2 + (x) * LEVEL_CPART_CUS3_SIZE)
@@ -7721,6 +7722,14 @@ static int LoadTape_HEAD(File *file, int chunk_size, struct TapeInfo *tape)
   return chunk_size;
 }
 
+static int LoadTape_SCRN(File *file, int chunk_size, struct TapeInfo *tape)
+{
+  tape->scr_fieldx = getFile8Bit(file);
+  tape->scr_fieldy = getFile8Bit(file);
+
+  return chunk_size;
+}
+
 static int LoadTape_INFO(File *file, int chunk_size, struct TapeInfo *tape)
 {
   int level_identifier_size;
@@ -8011,6 +8020,7 @@ void LoadTapeFromFilename(char *filename)
     {
       { "VERS", TAPE_CHUNK_VERS_SIZE,  LoadTape_VERS },
       { "HEAD", TAPE_CHUNK_HEAD_SIZE,  LoadTape_HEAD },
+      { "SCRN", TAPE_CHUNK_SCRN_SIZE,  LoadTape_SCRN },
       { "INFO", -1,                    LoadTape_INFO },
       { "BODY", -1,                    LoadTape_BODY },
       {  NULL,  0,                     NULL }
@@ -8091,6 +8101,14 @@ void LoadSolutionTape(int nr)
     CopyNativeTape_SP_to_RND(&level);
 }
 
+static boolean checkSaveTape_SCRN(struct TapeInfo *tape)
+{
+  // chunk required for team mode tapes with non-default screen size
+  return (tape->num_participating_players > 1 &&
+         (tape->scr_fieldx != SCR_FIELDX_DEFAULT ||
+          tape->scr_fieldy != SCR_FIELDY_DEFAULT));
+}
+
 static void SaveTape_VERS(FILE *file, struct TapeInfo *tape)
 {
   putFileVersion(file, tape->file_version);
@@ -8123,6 +8141,12 @@ static void SaveTape_HEAD(FILE *file, struct TapeInfo *tape)
   putFileVersion(file, tape->engine_version);
 }
 
+static void SaveTape_SCRN(FILE *file, struct TapeInfo *tape)
+{
+  putFile8Bit(file, tape->scr_fieldx);
+  putFile8Bit(file, tape->scr_fieldy);
+}
+
 static void SaveTape_INFO(FILE *file, struct TapeInfo *tape)
 {
   int level_identifier_size = strlen(tape->level_identifier) + 1;
@@ -8188,6 +8212,12 @@ void SaveTapeToFilename(char *filename)
   putFileChunkBE(file, "HEAD", TAPE_CHUNK_HEAD_SIZE);
   SaveTape_HEAD(file, &tape);
 
+  if (checkSaveTape_SCRN(&tape))
+  {
+    putFileChunkBE(file, "SCRN", TAPE_CHUNK_SCRN_SIZE);
+    SaveTape_SCRN(file, &tape);
+  }
+
   putFileChunkBE(file, "INFO", info_chunk_size);
   SaveTape_INFO(file, &tape);