XEEN: Implement Music playEffect method

1 files changed, 47 insertions, 0 deletions

diff --git a/engines/xeen/music.h b/engines/xeen/music.h
index 202f8ba982..40059be327 100644
--- a/engines/xeen/music.h
+++ b/engines/xeen/music.h
@@ -29,6 +29,8 @@
 #include "common/mutex.h"
 #include "common/queue.h"
 
+#define ADLIB_CHANNEL_COUNT 9
+
 namespace OPL {
 	class OPL;
 }
@@ -45,12 +47,31 @@ struct RegisterValue {
 };
 
 class Music {
+	struct Channel {
+		byte _outputLevel;
+		byte _scalingValue;
+
+		Channel() : _outputLevel(0), _scalingValue(0) {}
+	};
+private:
+	static const byte OPERATOR1_INDEXES[ADLIB_CHANNEL_COUNT];
+	static const byte OPERATOR2_INDEXES[ADLIB_CHANNEL_COUNT];
 private:
 	OPL::OPL *_opl;
 	Common::Mutex _driverMutex;
+	Common::Array<Channel> _channels;
 	Common::Queue<RegisterValue> _queue;
 	const byte *_effectsData;
 	Common::Array<uint16> _effectsOffsets;
+	const byte *_musicPtr1, *_musicPtr2;
+	bool _fieldF;
+	int _field109;
+	int _field10B;
+	byte _field10D[7];
+	int _field114;
+	int _field115;
+	int _field117;
+	bool _lowMusicIgnored;
 private:
 	/**
 	 * Loads effects data that was embedded in the music driver
@@ -58,6 +79,12 @@ private:
 	void loadEffectsData();
 
 	/**
+	 * Adds a register write to the pending queue that will be flushed
+	 * out to the OPL on the next timer call
+	 */
+	void write(int reg, int val);
+
+	/**
 	 * Timer function for OPL
 	 */
 	void onTimer();
@@ -71,11 +98,31 @@ private:
 	 * Updates any playing music
 	 */
 	void update();
+
+	/**
+	 * Does a reset
+	 */
+	void reset();
+
+	/**
+	 * Sets the frequency for an operator
+	 */
+	void setFrequency(byte operatorNum, uint frequency);
+
+	/**
+	 * Sets the output level for a channel
+	 */
+	void setOutputLevel(byte channelNum, uint level);
 protected:
 	Audio::Mixer *_mixer;
 public:
 	Music(Audio::Mixer *mixer);
 	~Music();
+
+	/**
+	 * Starts an effect playing
+	 */
+	void playEffect(uint effectId);
 };
 
 } // End of namespace Xeen