BLADERUNNER: Add support for ambient sounds, game flags and variables, and use VQA z-buffer when rendering.

1 files changed, 216 insertions, 0 deletions

diff --git a/engines/bladerunner/ambient_sounds.cpp b/engines/bladerunner/ambient_sounds.cpp
new file mode 100644
index 0000000000..77b819578f
--- /dev/null
+++ b/engines/bladerunner/ambient_sounds.cpp
@@ -0,0 +1,216 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "bladerunner/ambient_sounds.h"
+
+#include "bladerunner/audio_player.h"
+#include "bladerunner/bladerunner.h"
+#include "bladerunner/gameinfo.h"
+
+#include "common/debug.h"
+#include "common/system.h"
+
+namespace BladeRunner {
+
+#define NON_LOOPING_SOUNDS 25
+#define LOOPING_SOUNDS      3
+
+AmbientSounds::AmbientSounds(BladeRunnerEngine *vm)
+	: _vm(vm)
+{
+	_nonLoopingSounds = new NonLoopingSound[NON_LOOPING_SOUNDS];
+	_loopingSounds = new LoopingSound[LOOPING_SOUNDS];
+	_ambientVolume = 65;
+
+	for (int i = 0; i != NON_LOOPING_SOUNDS; ++i) {
+		NonLoopingSound &track = _nonLoopingSounds[i];
+		track.isActive = false;
+	}
+
+	for (int i = 0; i != LOOPING_SOUNDS; ++i) {
+		LoopingSound &track = _loopingSounds[i];
+		track.isActive = false;
+	}
+}
+
+AmbientSounds::~AmbientSounds() {
+	delete[] _nonLoopingSounds;
+	delete[] _loopingSounds;
+}
+
+static inline void sort(int &a, int &b) {
+	if (a > b) {
+		int t = a;
+		a = b;
+		b = t;
+	}
+}
+
+void AmbientSounds::addSound(
+	int id,
+	int timeRangeBegin, int timeRangeEnd,
+	int volumeRangeBegin, int volumeRangeEnd,
+	int unk1RangeBegin, int unk1RangeEnd,
+	int unk2RangeBegin, int unk2RangeEnd,
+	int priority, int unk3)
+{
+	const char *name = _vm->_gameInfo->getSfxTrack(id);
+
+	sort(volumeRangeBegin, volumeRangeEnd);
+	sort(unk1RangeBegin, unk1RangeEnd);
+	sort(unk2RangeBegin, unk2RangeEnd);
+
+	addSoundByName(
+		name,
+		timeRangeBegin, timeRangeEnd,
+		volumeRangeBegin, volumeRangeEnd,
+		unk1RangeBegin, unk1RangeEnd,
+		unk2RangeBegin, unk2RangeEnd,
+		priority, unk3
+	);
+}
+
+void AmbientSounds::addLoopingSound(int sfx_id, int volume, int unk, int fadeInTime) {
+	const char *name = _vm->_gameInfo->getSfxTrack(sfx_id);
+
+	int32 hash = mix_id(name);
+
+	if (findLoopingTrackByHash(hash) >= 0)
+		return;
+
+	int i = findAvailableLoopingTrack();
+	if (i == -1)
+		return;
+
+	int actualVolume = volume * _ambientVolume / 100;
+
+	int balance = 0;
+
+	_vm->_audioPlayer->playAud(name, actualVolume, balance, balance, 100, AudioPlayer::LOOP | AudioPlayer::OVERRIDE_VOLUME);
+}
+
+void AmbientSounds::tick() {
+	uint32 now = g_system->getMillis();
+
+	for (int i = 0; i != NON_LOOPING_SOUNDS; ++i) {
+		NonLoopingSound &track = _nonLoopingSounds[i];
+
+		if (!track.isActive || track.nextPlayTime > now)
+			continue;
+
+		int pan1, pan2;
+
+		pan1 = _vm->_rnd.getRandomNumberRng(track.pan1begin, track.pan1end);
+		if (track.pan2begin == -101) {
+			pan2 = pan1;
+		} else {
+			pan2 = _vm->_rnd.getRandomNumberRng(track.pan2begin, track.pan2end);
+		}
+
+		track.volume = _vm->_rnd.getRandomNumberRng(track.volume1, track.volume2);
+
+		track.audio_player_track = _vm->_audioPlayer->playAud(
+			track.name,
+			track.volume * _ambientVolume / 100,
+			pan1, pan2,
+			track.priority,
+			AudioPlayer::OVERRIDE_VOLUME
+		);
+
+		track.nextPlayTime = now + _vm->_rnd.getRandomNumberRng(track.time1, track.time2);
+
+	}
+}
+
+int AmbientSounds::findAvailableNonLoopingTrack() {
+	for (int i = 0; i != NON_LOOPING_SOUNDS; ++i) {
+		if (!_nonLoopingSounds[i].isActive)
+			return i;
+	}
+
+	return -1;
+}
+
+int AmbientSounds::findNonLoopingTrackByHash(int32 hash) {
+	for (int i = 0; i != NON_LOOPING_SOUNDS; ++i) {
+		NonLoopingSound &track = _nonLoopingSounds[i];
+
+		if (track.isActive && track.hash == hash)
+			return i;
+	}
+
+	return -1;
+}
+
+int AmbientSounds::findAvailableLoopingTrack() {
+	for (int i = 0; i != LOOPING_SOUNDS; ++i) {
+		if (!_loopingSounds[i].isActive)
+			return i;
+	}
+
+	return -1;
+}
+
+int AmbientSounds::findLoopingTrackByHash(int32 hash) {
+	for (int i = 0; i != LOOPING_SOUNDS; ++i) {
+		LoopingSound &track = _loopingSounds[i];
+
+		if (track.isActive && track.hash == hash)
+			return i;
+	}
+
+	return -1;
+}
+
+void AmbientSounds::addSoundByName(
+		const char *name,
+		int timeRangeBegin, int timeRangeEnd,
+		int volumeRangeBegin, int volumeRangeEnd,
+		int pan1begin, int pan1end,
+		int pan2begin, int pan2end,
+		int priority, int unk3)
+{
+	int i = findAvailableNonLoopingTrack();
+	if (i < 0)
+		return;
+
+	NonLoopingSound &track = _nonLoopingSounds[i];
+
+	uint32 now = g_system->getMillis();
+
+	track.isActive      = true;
+	strcpy(track.name, name);
+	track.hash          = mix_id(name);
+	track.time1         = 1000 * timeRangeBegin;
+	track.time2         = 1000 * timeRangeEnd;
+	track.nextPlayTime  = now + _vm->_rnd.getRandomNumberRng(track.time1, track.time2);
+	track.volume1       = volumeRangeBegin;
+	track.volume2       = volumeRangeEnd;
+	track.volume        = 0;
+	track.pan1begin     = pan1begin;
+	track.pan1end       = pan1end;
+	track.pan2begin     = pan2begin;
+	track.pan2end       = pan2end;
+	track.priority      = priority;
+}
+
+} // End of namespace BladeRunner