Initial commit.

code/ff/ff_MultiEffect.cpp

@@ -0,0 +1,281 @@
+#include "common_headers.h"
+
+#ifdef _IMMERSION
+
+////--------------------------
+///	MultiEffect::GetStartDelay
+//------------------------------
+//	Determines the shortest start delay.
+//
+qboolean MultiEffect::GetStartDelay( DWORD &StartDelay )
+{
+	StartDelay = MAXDWORD;
+	qboolean result = qtrue;
+
+	int i,max;
+	for
+	(	i = 0, max = GetNumberOfContainedEffects()
+	;	i < max
+	;	i++
+	){
+		DWORD CurrentStartDelay;
+		CImmEffect* pIE = GetContainedEffect( i );
+		if ( pIE
+		&&	 pIE->GetStartDelay( CurrentStartDelay )
+		){
+			StartDelay = Min( StartDelay, CurrentStartDelay );
+		}
+		else
+		{
+			result = qfalse;
+		}
+	}
+
+	return qboolean
+	(	result 
+	&&	max > 0
+	);
+}
+
+////------------------------
+///	MultiEffect::GetDelayEnd
+//----------------------------
+//	Computes end of earliest start delay. Compare this value with ::GetTickCount()
+//	to determine if any component waveform started playing on the device.
+//
+qboolean MultiEffect::GetDelayEnd( DWORD &DelayEnd )
+{
+	DelayEnd = MAXDWORD;
+	qboolean result = qtrue;
+
+	int i,max;
+	for
+	(	i = 0, max = GetNumberOfContainedEffects()
+	;	i < max
+	;	i++
+	){
+		DWORD StartDelay;
+		CImmEffect* pIE = GetContainedEffect( i );
+		if ( pIE 
+		&&	 pIE->GetStartDelay( StartDelay )
+		){
+			DelayEnd = Min( DelayEnd, StartDelay + pIE->m_dwLastStarted );
+		}
+		else
+		{
+			result = qfalse;
+		}
+	}
+
+	return qboolean
+	(	result 
+	&&	max > 0
+	);
+}
+
+////---------------------------
+///	MultiEffect::ChangeDuration
+//-------------------------------
+//	Analogous to CImmEffect::ChangeDuration. Changes duration of all component effects.
+//	Returns false if any effect returns false. Attempts to change duration of all effects
+//	regardless of individual return values.
+//
+qboolean MultiEffect::ChangeDuration( DWORD Duration )
+{
+	DWORD CurrentDuration;
+	qboolean result = GetDuration( CurrentDuration );
+
+	if ( result )
+	{
+		DWORD RelativeDuration = Duration - CurrentDuration;
+
+		int i,max;
+		for
+		(	i = 0, max = GetNumberOfContainedEffects()
+		;	i < max
+		;	i++
+		){
+			IMM_ENVELOPE Envelope = {0};
+			CImmEffect* pIE = GetContainedEffect( i );
+			result &= qboolean
+			(	pIE
+			&&	pIE->GetDuration( CurrentDuration )
+			&&	pIE->ChangeDuration( CurrentDuration + RelativeDuration )
+			&&	(	!pIE->GetEnvelope( &Envelope )
+				||	(	Envelope.dwAttackTime = ( CurrentDuration ? (DWORD)((float)Envelope.dwAttackTime * (float)Duration / (float)CurrentDuration) : 0 )
+					,	Envelope.dwFadeTime = ( CurrentDuration ? (DWORD)((float)Envelope.dwFadeTime * (float)Duration / (float)CurrentDuration) : 0 )
+					,	pIE->ChangeEnvelope( &Envelope )
+					)
+				)
+			);
+		}
+
+		result &= qboolean( max > 0 );
+	}
+
+	return result;
+}
+
+////-----------------------
+///	MultiEffect::ChangeGain
+//---------------------------
+//	Analogous to CImmEffect::ChangeGain. Changes gain of all component effects.
+//	Returns false if any effect returns false. Attempts to change gain of all effects
+//	regardless of individual return values.
+//
+qboolean MultiEffect::ChangeGain( DWORD Gain )
+{
+	DWORD CurrentGain;
+	qboolean result = GetGain( CurrentGain );
+
+	if ( result )
+	{
+		DWORD RelativeGain = Gain - CurrentGain;
+
+		int i,max;
+		for
+		(	i = 0, max = GetNumberOfContainedEffects()
+		;	i < max
+		;	i++
+		){
+			CImmEffect* pIE = GetContainedEffect( i );
+			result &= qboolean
+			(	pIE
+			&&	pIE->GetGain( CurrentGain )
+			&&	pIE->ChangeGain( CurrentGain + RelativeGain )
+			);
+		}
+
+		result &= qboolean( max > 0 );
+	}
+
+	return result;
+}
+
+////----------------------
+///	MultiEffect::GetStatus
+//--------------------------
+//	Analogous to CImmEffect::GetStatus. ORs all status flags from all component effects.
+//	Returns false if any effect returns false. Attempts to get status of all effects
+//	regardless of individual return values.
+//
+qboolean MultiEffect::GetStatus( DWORD &Status )
+{
+	Status = 0;
+	qboolean result = qtrue;
+
+	int i,max;
+	for
+	(	i = 0, max = GetNumberOfContainedEffects()
+	;	i < max
+	;	i++
+	){
+		DWORD CurrentStatus;
+		CImmEffect* pIE = GetContainedEffect( i );
+		if ( pIE
+		&&	 pIE->GetStatus( &CurrentStatus )
+		){
+			Status |= CurrentStatus;
+		}
+		else
+		{
+			result = qfalse;
+		}
+	}
+
+	return qboolean
+	(	result
+	&&	max > 0
+	);
+}
+
+qboolean MultiEffect::ChangeStartDelay( DWORD StartDelay )
+{
+	DWORD CurrentStartDelay;
+	qboolean result = GetStartDelay( CurrentStartDelay );
+
+	if ( result )
+	{
+		DWORD RelativeStartDelay = StartDelay - CurrentStartDelay;
+		
+		int i,max;
+		for
+		(	i = 0, max = GetNumberOfContainedEffects()
+		;	i < max
+		;	i++
+		){
+			CImmEffect* pIE = GetContainedEffect( i );
+			result &= qboolean
+			(	pIE
+			&&	pIE->GetStartDelay( CurrentStartDelay )
+			&&	pIE->ChangeStartDelay( CurrentStartDelay + RelativeStartDelay )
+			);
+		}
+
+		result &= qboolean( max > 0 );
+	}
+
+	return result;
+}
+
+qboolean MultiEffect::GetDuration( DWORD &Duration )
+{
+	Duration = 0;
+	qboolean result = qtrue;
+
+	int i,max;
+	for
+	(	i = 0, max = GetNumberOfContainedEffects()
+	;	i < max
+	;	i++
+	){
+		DWORD CurrentDuration;
+		CImmEffect* pIE = GetContainedEffect( i );
+		if ( pIE
+		&&	 pIE->GetDuration( CurrentDuration )
+		){
+			Duration = Max( Duration, CurrentDuration );
+		}
+		else
+		{
+			result = qfalse;
+		}
+	}
+
+	return qboolean
+	(	result
+	&&	max > 0
+	);
+}
+
+qboolean MultiEffect::GetGain( DWORD &Gain )
+{
+	Gain = 0;
+	qboolean result = qtrue;
+
+	int i,max;
+	for
+	(	i = 0, max = GetNumberOfContainedEffects()
+	;	i < max
+	;	i++
+	){
+		DWORD CurrentGain;
+		CImmEffect* pIE = GetContainedEffect( i );
+		if ( pIE
+		&&	 pIE->GetGain( CurrentGain )
+		){
+			Gain = Max( Gain, CurrentGain );
+		}
+		else
+		{
+			result = qfalse;
+		}
+	}
+
+	return qboolean
+	(	result
+	&&	max > 0
+	);
+}
+
+#endif // _IMMERSION