ADL: Add bell function

5 files changed, 189 insertions, 26 deletions

diff --git a/engines/adl/adl.cpp b/engines/adl/adl.cpp
index 3ce3989212..74fc93c12e 100644
--- a/engines/adl/adl.cpp
+++ b/engines/adl/adl.cpp
@@ -39,12 +39,14 @@
 #include "adl/display.h"
 #include "adl/detection.h"
 #include "adl/graphics.h"
+#include "adl/speaker.h"
 
 namespace Adl {
 
 AdlEngine::~AdlEngine() {
 	delete _display;
 	delete _graphics;
+	delete _speaker;
 }
 
 AdlEngine::AdlEngine(OSystem *syst, const AdlGameDescription *gd) :
@@ -62,6 +64,24 @@ AdlEngine::AdlEngine(OSystem *syst, const AdlGameDescription *gd) :
 		_canRestoreNow(false) {
 }
 
+bool AdlEngine::pollEvent(Common::Event &event) {
+	if (g_system->getEventManager()->pollEvent(event)) {
+		if (event.type != Common::EVENT_KEYDOWN)
+			return false;
+
+		if (event.kbd.flags & Common::KBD_CTRL) {
+			if (event.kbd.keycode == Common::KEYCODE_q) {
+				quitGame();
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	return false;
+}
+
 Common::String AdlEngine::readString(Common::ReadStream &stream, byte until) const {
 	Common::String str;
 
@@ -100,23 +120,11 @@ void AdlEngine::printMessage(uint idx, bool wait) const {
 }
 
 void AdlEngine::delay(uint32 ms) const {
-	Common::EventManager *ev = g_system->getEventManager();
-
 	uint32 start = g_system->getMillis();
 
-	while (!g_engine->shouldQuit() && g_system->getMillis() - start < ms) {
+	while (!shouldQuit() && g_system->getMillis() - start < ms) {
 		Common::Event event;
-		if (ev->pollEvent(event)) {
-			if (event.type == Common::EVENT_KEYDOWN && (event.kbd.flags & Common::KBD_CTRL)) {
-				switch(event.kbd.keycode) {
-				case Common::KEYCODE_q:
-					g_engine->quitGame();
-					break;
-				default:
-					break;
-				}
-			}
-		}
+		pollEvent(event);
 		g_system->delayMillis(16);
 	}
 }
@@ -130,7 +138,7 @@ Common::String AdlEngine::inputString(byte prompt) const {
 	while (1) {
 		byte b = inputKey();
 
-		if (g_engine->shouldQuit() || _isRestoring)
+		if (shouldQuit() || _isRestoring)
 			return 0;
 
 		if (b == 0)
@@ -162,25 +170,17 @@ Common::String AdlEngine::inputString(byte prompt) const {
 }
 
 byte AdlEngine::inputKey(bool showCursor) const {
-	Common::EventManager *ev = g_system->getEventManager();
-
 	byte key = 0;
 
 	if (showCursor)
 		_display->showCursor(true);
 
-	while (!g_engine->shouldQuit() && !_isRestoring && key == 0) {
+	while (!shouldQuit() && !_isRestoring && key == 0) {
 		Common::Event event;
-		if (ev->pollEvent(event)) {
+		if (pollEvent(event)) {
 			if (event.type != Common::EVENT_KEYDOWN)
 				continue;
 
-			if (event.kbd.flags & Common::KBD_CTRL) {
-				if (event.kbd.keycode == Common::KEYCODE_q)
-					g_engine->quitGame();
-				continue;
-			}
-
 			switch (event.kbd.keycode) {
 			case Common::KEYCODE_BACKSPACE:
 			case Common::KEYCODE_RETURN:
@@ -307,6 +307,10 @@ void AdlEngine::drawItems() const {
 	}
 }
 
+void AdlEngine::bell(uint count) const {
+	_speaker->bell(count);
+}
+
 const Room &AdlEngine::getRoom(uint i) const {
 	if (i < 1 || i > _state.rooms.size())
 		error("Room %i out of range [1, %i]", i, _state.rooms.size());
@@ -403,6 +407,7 @@ void AdlEngine::dropItem(byte noun) {
 }
 
 Common::Error AdlEngine::run() {
+	_speaker = new Speaker();
 	_display = new Display();
 
 	init();
diff --git a/engines/adl/adl.h b/engines/adl/adl.h
index b118a3741a..9ccd02ba6a 100644
--- a/engines/adl/adl.h
+++ b/engines/adl/adl.h
@@ -26,18 +26,26 @@
 #include "common/array.h"
 #include "common/rect.h"
 #include "common/str.h"
+#include "common/hashmap.h"
+#include "common/hash-str.h"
 
 #include "engines/engine.h"
 
+#include "audio/mixer.h"
+#include "audio/softsynth/pcspk.h"
+
 namespace Common {
 class ReadStream;
 class SeekableReadStream;
+class File;
+struct Event;
 }
 
 namespace Adl {
 
 class Display;
 class GraphicsMan;
+class Speaker;
 struct AdlGameDescription;
 
 // Conditional opcodes
@@ -138,6 +146,8 @@ class AdlEngine : public Engine {
 public:
 	virtual ~AdlEngine();
 
+	static bool pollEvent(Common::Event &event);
+
 protected:
 	AdlEngine(OSystem *syst, const AdlGameDescription *gd);
 
@@ -158,6 +168,9 @@ protected:
 	void clearScreen() const;
 	void drawItems() const;
 
+	// Sound
+	void bell(uint count = 1) const;
+
 	// Game state functions
 	const Room &getRoom(uint i) const;
 	Room &getRoom(uint i);
@@ -176,6 +189,7 @@ protected:
 
 	Display *_display;
 	GraphicsMan *_graphics;
+	Speaker *_speaker;
 
 	// Message strings in data file
 	Common::Array<Common::String> _messages;
diff --git a/engines/adl/module.mk b/engines/adl/module.mk
index de4d645dbc..35e1228da0 100644
--- a/engines/adl/module.mk
+++ b/engines/adl/module.mk
@@ -8,7 +8,8 @@ MODULE_OBJS := \
 	graphics_v1.o \
 	graphics_v2.o \
 	hires1.o \
-	hires2.o
+	hires2.o \
+	speaker.o
 
 MODULE_DIRS += \
 	engines/adl
diff --git a/engines/adl/speaker.cpp b/engines/adl/speaker.cpp
new file mode 100644
index 0000000000..532d361cd9
--- /dev/null
+++ b/engines/adl/speaker.cpp
@@ -0,0 +1,94 @@
+/* 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 "common/system.h"
+#include "common/events.h"
+
+#include "engines/engine.h"
+
+#include "audio/audiostream.h"
+#include "audio/decoders/raw.h"
+
+#include "adl/speaker.h"
+#include "adl/adl.h"
+
+namespace Adl {
+
+// Number of times to duplicate each sample
+#define SAMPLE_DUP 4
+// Bell frequency in Hz
+#define BELL_FREQ 1000
+// Sample rate
+#define SAMPLE_RATE (BELL_FREQ * SAMPLE_DUP * 2)
+// Number of waves per 0.1 seconds (bell length)
+#define BELL_WAVE_COUNT (SAMPLE_RATE / 10 / SAMPLE_DUP / 2)
+// Length of bell in samples
+#define BELL_LEN (BELL_WAVE_COUNT * SAMPLE_DUP * 2)
+// Length of silence in samples
+#define SILENCE_LEN (SAMPLE_RATE / 80)
+
+Speaker::~Speaker() {
+	delete[] _bell;
+	delete[] _silence;
+}
+
+Speaker::Speaker() {
+	_bell = new byte[BELL_LEN];
+
+	byte *buf = _bell;
+	for (uint i = 0; i < BELL_WAVE_COUNT; ++i) {
+		for (uint j = 0; j < SAMPLE_DUP; ++j)
+			*buf++ = 0x00;
+		for (uint j = 0; j < SAMPLE_DUP; ++j)
+			*buf++ = 0xff;
+	}
+
+	_silence = new byte[SILENCE_LEN];
+
+	buf = _silence;
+	for (uint i = 0; i < SILENCE_LEN; ++i)
+		*buf++ = 0x80;
+}
+
+void Speaker::bell(uint count) {
+	Audio::QueuingAudioStream *stream = Audio::makeQueuingAudioStream(SAMPLE_RATE, false);
+	Audio::SoundHandle handle;
+
+	stream->queueBuffer(_bell, BELL_LEN, DisposeAfterUse::NO, Audio::FLAG_UNSIGNED);
+
+	for (uint i = 1; i < count; ++i) {
+		stream->queueBuffer(_silence, SILENCE_LEN, DisposeAfterUse::NO, Audio::FLAG_UNSIGNED);
+		stream->queueBuffer(_bell, BELL_LEN, DisposeAfterUse::NO, Audio::FLAG_UNSIGNED);
+	}
+
+	stream->finish();
+
+	g_system->getMixer()->playStream(Audio::Mixer::kPlainSoundType, &handle, stream);
+
+	while (!g_engine->shouldQuit() && g_system->getMixer()->isSoundHandleActive(handle)) {
+		Common::Event event;
+		static_cast<AdlEngine *>(g_engine)->pollEvent(event);
+		g_system->delayMillis(16);
+	}
+}
+
+} // End of namespace Adl
diff --git a/engines/adl/speaker.h b/engines/adl/speaker.h
new file mode 100644
index 0000000000..31aaac32d2
--- /dev/null
+++ b/engines/adl/speaker.h
@@ -0,0 +1,49 @@
+/* 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.
+ *
+ */
+
+#ifndef ADL_SPEAKER_H
+#define ADL_SPEAKER_H
+
+#include "common/types.h"
+
+#include "audio/mixer.h"
+
+namespace Audio {
+class AudioStream;
+}
+
+namespace Adl {
+
+class Speaker {
+public:
+	Speaker();
+	~Speaker();
+
+	void bell(uint count);
+
+private:
+	byte *_bell, *_silence;
+};
+
+} // End of namespace Adl
+
+#endif