CRYOMNI3D: Add ability to choose ZON file

That's only used for workaround when an unused image file hasn't any ZON
file for it

2 files changed, 6 insertions, 3 deletions

diff --git a/engines/cryomni3d/fixed_image.cpp b/engines/cryomni3d/fixed_image.cpp
index d4b9f37e0c..f4e900f333 100644
--- a/engines/cryomni3d/fixed_image.cpp
+++ b/engines/cryomni3d/fixed_image.cpp
@@ -65,7 +65,8 @@ void ZonFixedImage::run(const CallbackFunctor *callback) {
 	_imageSurface = nullptr;
 }
 
-void ZonFixedImage::load(const Common::String &image) {
+// Just pass a const char * for zone because it's for workarounds and constructing a null String at almost each load call is inefficient
+void ZonFixedImage::load(const Common::String &image, const char *zone) {
 	_imageSurface = nullptr;
 	delete _imageDecoder;
 	_imageDecoder = nullptr;
@@ -76,7 +77,9 @@ void ZonFixedImage::load(const Common::String &image) {
 	}
 	_imageSurface = _imageDecoder->getSurface();
 
-	loadZones(image);
+	const Common::String &zoneFName = zone == nullptr ? image : zone;
+	loadZones(zoneFName);
+
 #if 0
 	// This is not correct but to debug zones I think it's OK
 	Graphics::Surface *tmpSurf = (Graphics::Surface *) _imageSurface;
diff --git a/engines/cryomni3d/fixed_image.h b/engines/cryomni3d/fixed_image.h
index 3cabfa3077..7321a30e05 100644
--- a/engines/cryomni3d/fixed_image.h
+++ b/engines/cryomni3d/fixed_image.h
@@ -69,7 +69,7 @@ public:
 	void display() const;
 
 	/* These functions and attributes are used in image handler */
-	void load(const Common::String &image);
+	void load(const Common::String &image, const char *zone = nullptr);
 	void manage();
 	void updateSurface(const Graphics::Surface *newSurface);
 	const Graphics::Surface *surface() const { return _imageSurface; }