X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Ftape.c;h=27e1733227f1bdad1ca511cf22eda1c2ec44c751;hb=2a4f48a259cbb8cf1f4cc8d6c9a734b37446d118;hp=ac96ef96aa09e4721dc7c6f3e181b2356bdb951f;hpb=7bcc6aa833d64b21f78793dd00ed4c1356b98d05;p=rocksndiamonds.git

diff --git a/src/tape.c b/src/tape.c
index ac96ef96..27e17332 100644
--- a/src/tape.c
+++ b/src/tape.c
@@ -894,10 +894,10 @@ byte *TapePlayAction(void)
     action[i] = tape.pos[tape.counter].action[i];
 
 #if DEBUG_TAPE_WHEN_PLAYING
-  Print("%05d", FrameCounter);
+  DebugContinued("", "%05d", FrameCounter);
   for (i = 0; i < MAX_TAPE_ACTIONS; i++)
-    Print("   %08x", action[i]);
-  Print("\n");
+    DebugContinued("", "   %08x", action[i]);
+  DebugContinued("tape:play", "\n");
 #endif
 
   tape.set_centered_player = FALSE;
@@ -955,7 +955,7 @@ unsigned int GetTapeLengthFrames(void)
   int i;
 
   if (TAPE_IS_EMPTY(tape))
-    return(0);
+    return 0;
 
   for (i = 0; i < tape.length; i++)
     tape_length_frames += tape.pos[i].delay;
@@ -1493,14 +1493,14 @@ static boolean PatchTape(struct TapeInfo *tape, char *mode)
     return FALSE;
   }
 
-  byte property_bits = tape->property_bits;
+  boolean unpatch_tape = FALSE;
+  boolean use_property_bit = FALSE;
   byte property_bitmask = 0;
-  boolean set_property_bit = TRUE;
 
   if (strSuffix(mode, ":0") ||
       strSuffix(mode, ":off") ||
       strSuffix(mode, ":clear"))
-    set_property_bit = FALSE;
+    unpatch_tape = TRUE;
 
   if (strEqual(mode, "em_random_bug") || strPrefix(mode, "em_random_bug:"))
   {
@@ -1514,6 +1514,41 @@ static boolean PatchTape(struct TapeInfo *tape, char *mode)
     }
 
     property_bitmask = TAPE_PROPERTY_EM_RANDOM_BUG;
+
+    use_property_bit = TRUE;
+  }
+  else if (strEqual(mode, "screen_34x34") || strPrefix(mode, "screen_34x34:"))
+  {
+    // this bug only affects team mode tapes
+    if (tape->num_participating_players == 1)
+    {
+      Print("Only team mode tapes can be patched against screen size bug!\n");
+
+      return FALSE;
+    }
+
+    // this bug (that always existed before) was fixed in version 4.2.2.1
+    if (tape->engine_version >= VERSION_IDENT(4,2,2,1))
+    {
+      Print("This tape version cannot be patched against screen size bug!\n");
+
+      return FALSE;
+    }
+
+    int factor = (unpatch_tape ? 1 : 2);
+    int scr_fieldx_new = SCR_FIELDX_DEFAULT * factor;
+    int scr_fieldy_new = SCR_FIELDY_DEFAULT * factor;
+
+    if (scr_fieldx_new == tape->scr_fieldx &&
+	scr_fieldy_new == tape->scr_fieldy)
+    {
+      Print("Tape already patched for '%s'!\n", mode);
+
+      return FALSE;
+    }
+
+    tape->scr_fieldx = scr_fieldx_new;
+    tape->scr_fieldy = scr_fieldy_new;
   }
   else
   {
@@ -1522,22 +1557,29 @@ static boolean PatchTape(struct TapeInfo *tape, char *mode)
     return FALSE;
   }
 
-  if (set_property_bit)
-    property_bits |= property_bitmask;
-  else
-    property_bits &= ~property_bitmask;
-
-  if (property_bits == tape->property_bits)
+  // patching tapes using property bits may be used for several patch modes
+  if (use_property_bit)
   {
-    Print("Tape already patched for '%s'!\n", mode);
+    byte property_bits = tape->property_bits;
+    boolean set_property_bit = (unpatch_tape ? FALSE : TRUE);
 
-    return FALSE;
+    if (set_property_bit)
+      property_bits |= property_bitmask;
+    else
+      property_bits &= ~property_bitmask;
+
+    if (property_bits == tape->property_bits)
+    {
+      Print("Tape already patched for '%s'!\n", mode);
+
+      return FALSE;
+    }
+
+    tape->property_bits = property_bits;
   }
 
   Print("Patching for '%s' ... ", mode);
 
-  tape->property_bits = property_bits;
-
   return TRUE;
 }
 
@@ -1554,6 +1596,7 @@ void PatchTapes(void)
     PrintLine("=", 79);
     Print("Supported patch modes:\n");
     Print("- \"em_random_bug\"   - use 64-bit random value bug for EM engine\n");
+    Print("- \"screen_34x34\"    - force visible playfield size of 34 x 34\n");
     PrintLine("-", 79);
     Print("Supported modifiers:\n");
     Print("- add \":0\", \":off\" or \":clear\" to patch mode to un-patch tape file\n");