TITANIC: Fixes to choosing wave files for instruments

3 files changed, 13 insertions, 12 deletions

diff --git a/engines/titanic/sound/music_room_handler.cpp b/engines/titanic/sound/music_room_handler.cpp
index cbef0ce02b..c99370f4ac 100644
--- a/engines/titanic/sound/music_room_handler.cpp
+++ b/engines/titanic/sound/music_room_handler.cpp
@@ -290,7 +290,7 @@ bool CMusicRoomHandler::fn2(int index) {
 	if (vp._field0 == 0x7FFFFFFF || _array1[index]._muteControl)
 		_musicWaves[index]->setSize(size);
 	else
-		_musicWaves[index]->chooseInstrument(getPitch(index, arrIndex), size);
+		_musicWaves[index]->chooseWaveFile(getPitch(index, arrIndex), size);
 
 	if (_array1[index]._directionControl == _array2[index]._directionControl) {
 		++arrIndex;
diff --git a/engines/titanic/sound/music_wave.cpp b/engines/titanic/sound/music_wave.cpp
index 2b89c700b2..0f88c32632 100644
--- a/engines/titanic/sound/music_wave.cpp
+++ b/engines/titanic/sound/music_wave.cpp
@@ -298,27 +298,28 @@ int CMusicWave::read(uint16 *ptr, uint size) {
 	return size;
 }
 
-void CMusicWave::chooseInstrument(int index, int size) {
+void CMusicWave::chooseWaveFile(int index, int size) {
 	if (!_array)
 		setupArray(-36, 36);
 
-	int minVal = _items[0]._value - index;
-	int minIndex = 0;
+	int minDiff = ABS(_items[0]._value - index);
+	int waveIndex = 0;
+
 	for (uint idx = 1; idx < _items.size(); ++idx) {
-		int val = _items[idx]._value - index;
-		if (val < minVal) {
-			minVal = val;
-			minIndex = idx;
+		int diff = ABS(_items[idx]._value - index);
+		if (diff < minDiff) {
+			minDiff = diff;
+			waveIndex = idx;
 		}
 	}
 
-	int arrIndex = _arrayIndex - _items[minIndex]._value + index;
+	int arrIndex = _arrayIndex - _items[waveIndex]._value + index;
 
-	_waveIndex = minIndex;
+	_waveIndex = waveIndex;
 	_readPos = 0;
 	_readIncrement = (int)(_array[arrIndex] * 256);
 	_size = size;
-	_count = _items[minIndex]._waveFile->size() / 2;
+	_count = _items[waveIndex]._waveFile->size() / 2;
 }
 
 void CMusicWave::setupArray(int minVal, int maxVal) {
diff --git a/engines/titanic/sound/music_wave.h b/engines/titanic/sound/music_wave.h
index baed60c907..5b63c74f7f 100644
--- a/engines/titanic/sound/music_wave.h
+++ b/engines/titanic/sound/music_wave.h
@@ -124,7 +124,7 @@ public:
 	/**
 	 * Figure out which wave file to use next
 	 */
-	void chooseInstrument(int index, int freq);
+	void chooseWaveFile(int index, int freq);
 };
 
 } // End of namespace Titanic