Output a warning to the user, when he tries to play back MT32 MIDI tracks with a General MIDI device.

svn-id: r41012

1 files changed, 15 insertions, 0 deletions

diff --git a/engines/kyra/sound_midi.cpp b/engines/kyra/sound_midi.cpp
index 218b0d161d..f798251525 100644
--- a/engines/kyra/sound_midi.cpp
+++ b/engines/kyra/sound_midi.cpp
@@ -29,6 +29,8 @@
 #include "common/system.h"
 #include "common/config-manager.h"
 
+#include "gui/message.h"
+
 namespace Kyra {
 
 class MidiOutput : public MidiDriver {
@@ -467,6 +469,19 @@ SoundMidiPC::SoundMidiPC(KyraEngine_v1 *vm, Audio::Mixer *mixer, MidiDriver *dri
 	// file extension.
 	if (_vm->game() == GI_KYRA1 && _type == kMidiGM)
 		_type = kMidiMT32;
+
+	// Display a warning about possibly wrong sound when the user only has
+	// a General MIDI device, but the game is setup to use Roland MT32 MIDI.
+	// (This will only happen in The Legend of Kyrandia 1 though, all other
+	// supported games include special General MIDI tracks).
+	if (_type == kMidiMT32 && !_nativeMT32) {
+		::GUI::MessageDialog dialog("You appear to be using a General MIDI device,\n"
+									"but your game only supports Roland MT32 MIDI.\n"
+									"We try to map the Roland MT32 instruments to\n"
+									"General MIDI ones. After all it might happen\n"
+									"that a few tracks will not be correctly played.");
+		dialog.runModal();
+	}
 }
 
 SoundMidiPC::~SoundMidiPC() {