SCI32: Fix PHANT1 save file interoperability

Phantasmagoria 1 save files are uncompressed because they are small
and interoperable with the original interpreter, but the game scripts
frequently rename them. Renaming save files unconditionally compresses
the result and so only some files have been interoperable.

Phantasmagoria 1 files now remain uncompressed when renamed.

1 files changed, 5 insertions, 1 deletions

diff --git a/engines/sci/engine/kfile.cpp b/engines/sci/engine/kfile.cpp
index 007f8056a7..1e3f8bfd4c 100644
--- a/engines/sci/engine/kfile.cpp
+++ b/engines/sci/engine/kfile.cpp
@@ -900,9 +900,13 @@ reg_t kFileIORename(EngineState *s, int argc, reg_t *argv) {
 	oldName = g_sci->wrapFilename(oldName);
 	newName = g_sci->wrapFilename(newName);
 
+	// Phantasmagoria 1 files are small and interoperable with the
+	//  original interpreter so they aren't compressed, see file_open().
+	bool isCompressed = (g_sci->getGameId() != GID_PHANTASMAGORIA);
+
 	// SCI1.1 returns 0 on success and a DOS error code on fail. SCI32
 	// returns -1 on fail. We just return -1 for all versions.
-	if (g_sci->getSaveFileManager()->renameSavefile(oldName, newName))
+	if (g_sci->getSaveFileManager()->renameSavefile(oldName, newName, isCompressed))
 		return NULL_REG;
 	else
 		return SIGNAL_REG;