lightfx.cpp

Blood 2全套源码

// ----------------------------------------------------------------------- //
//
// MODULE  : LightFX.cpp
//
// PURPOSE : Glowing Light
//
// CREATED : 02/04/98
//			  7/17/98 - Converted to client SFX.
//
// ----------------------------------------------------------------------- //

#include <stdio.h>
#include "cpp_client_de.h"
#include "ClientUtilities.h"
#include "generic_msg_de.h"
#include "LightFX.h"
#include "ClientServerShared.h"
#include "SharedDefs.h"
#include "SoundTypes.h"


// Defines....


#define DOWNSOUND               0
#define UPSOUND                 1


// Waveform values taken from Blood

// monotonic flicker -- very doom like
static char flicker1[] = {
	0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0,
	1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1,
	0, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1,
	0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1,
};

// organic flicker -- good for torches
static DFLOAT flicker2[] = {
	1, 2, 4, 2, 3, 4, 3, 2, 0, 0, 1, 2, 4, 3, 2, 0,
	2, 1, 0, 1, 0, 2, 3, 4, 3, 2, 1, 1, 2, 0, 0, 1,
	1, 2, 3, 4, 4, 3, 2, 1, 2, 3, 4, 4, 2, 1, 0, 1,
	0, 0, 0, 0, 1, 2, 3, 4, 3, 2, 1, 2, 3, 4, 3, 2,
};

// mostly on flicker -- good for flaky fluourescents
static DFLOAT flicker3[] = {
	4, 4, 4, 4, 3, 4, 4, 4, 4, 4, 4, 2, 4, 3, 4, 4,
	4, 4, 2, 1, 3, 3, 3, 4, 3, 4, 4, 4, 4, 4, 2, 4,
	4, 4, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 0, 1,
	0, 1, 0, 1, 0, 2, 3, 4, 4, 4, 4, 4, 4, 4, 3, 4,
};

// mostly off flicker -- good for really flaky fluourescents
static DFLOAT flicker4[] = {
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	4, 0, 0, 3, 0, 1, 0, 1, 0, 4, 4, 4, 4, 4, 2, 0,
	0, 0, 0, 4, 4, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 1,
	0, 0, 0, 0, 0, 2, 1, 2, 1, 2, 1, 2, 1, 4, 3, 2,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};

static DFLOAT strobe[] = {
	64, 64, 64, 48, 36, 27, 20, 15, 11, 9, 6, 5, 4, 3, 2, 2,
	1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};

//static int GetWaveValue( int nWave, int theta, int amplitude )
static DFLOAT GetWaveValue(DBYTE nWaveform, DFLOAT fMin, DFLOAT fMax, DFLOAT fTheta )
{
	DFLOAT fReturn = fMax;

	fTheta = (DFLOAT)fmod(fTheta, PIx2);

	switch (nWaveform)
	{
		case WAVE_SQUARE:
			fReturn = (fTheta <= PI) ? fMin : fMax;
			break;

		case WAVE_SAW:
		{
			if (fTheta < PI)
				fReturn = fMin + (fMax - fMin) * fTheta / PI;
			else 
				fReturn = fMin + (fMax - fMin) * (PIx2 - fTheta) / PI;
			break;
		}

		case WAVE_RAMPUP:
			fReturn = fMin + (fMax - fMin) * fTheta / (PIx2);
			break;

		case WAVE_RAMPDOWN:
			fReturn = fMin + (fMax - fMin) * (PIx2 - fTheta) / (PIx2);
			break;

		case WAVE_SINE:
			fReturn = fMin + (fMax - fMin) * ((DFLOAT)sin(fTheta)/2.0f + 0.5f);
			break;

		case WAVE_FLICKER1:
		{
			int index = (int)((fTheta/(PIx2))*63);
			fReturn = fMin + (fMax - fMin) * (flicker1[index]);
			break;
		}

		case WAVE_FLICKER2:
		{
			int index = (int)((fTheta/(PIx2))*63);
			fReturn = fMin + (fMax - fMin) * (flicker2[index]/4.0f);
			break;
		}

		case WAVE_FLICKER3:
		{
			int index = (int)((fTheta/(PIx2))*63);
			fReturn = fMin + (fMax - fMin) * (flicker3[index]/4.0f);
			break;
		}

		case WAVE_FLICKER4:
		{
			int index = (int)((fTheta/(PIx2))*127);
			fReturn = fMin + (fMax - fMin) * (flicker4[index]/4.0f);
			break;
		}

		case WAVE_STROBE:
		{
			int index = (int)((fTheta/(PIx2))*63);
			fReturn = fMin + (fMax - fMin) * (strobe[index]/64.0f);
			break;
		}

		case WAVE_SEARCH:
		{
			fTheta *= 2.0f;
			if ( fTheta > PIx2 )
				fReturn = fMin;
			else
				fReturn = fMin + (fMax - fMin) * ((DFLOAT)-cos(fTheta)/2.0f + 0.5f);
			break;
		}
	}

	return fReturn;
};




// ----------------------------------------------------------------------- //
//
//	ROUTINE:	Init()
//
//	PURPOSE:	Initialize data members
//
// ----------------------------------------------------------------------- //

DBOOL CLightFX::Init(SFXCREATESTRUCT* psfxCreateStruct)
{
	if (!CSpecialFX::Init(psfxCreateStruct)) 
		return DFALSE;

	LIGHTCREATESTRUCT* pLight = (LIGHTCREATESTRUCT*)psfxCreateStruct;

	VEC_COPY(m_vColor, pLight->vColor);
	m_dwLightFlags =		pLight->dwLightFlags;
	m_fIntensityMin = 		pLight->fIntensityMin;
	m_fIntensityMax = 		pLight->fIntensityMax;
	m_nIntensityWaveform =	pLight->nIntensityWaveform;
	m_fIntensityFreq =		pLight->fIntensityFreq;
	m_fIntensityPhase =		pLight->fIntensityPhase;
	m_fRadiusMin = 			pLight->fRadiusMin;
	m_fRadiusMax = 			pLight->fRadiusMax;
	m_nRadiusWaveform =		pLight->nRadiusWaveform;
	m_fRadiusFreq =			pLight->fRadiusFreq;
	m_fRadiusPhase =		pLight->fRadiusPhase;
	m_hstrRampUpSound =		pLight->hstrRampUpSound;
	m_hstrRampDownSound =	pLight->hstrRampDownSound;

	m_fCurrentRadius		= m_fRadius = m_fRadiusMin;

	return DTRUE;
}



// ----------------------------------------------------------------------- //
//
//	ROUTINE:	CLightFX::CreateObject
//
//	PURPOSE:	Create object associated with the light
//
// ----------------------------------------------------------------------- //

DBOOL CLightFX::CreateObject(CClientDE *pClientDE)
{
	if (!CSpecialFX::CreateObject(pClientDE)) return DFALSE;

	DVector vPos;
	pClientDE->GetObjectPos(m_hServerObject, &vPos);

	DRotation rRot;
	pClientDE->GetObjectRotation(m_hServerObject, &rRot);

	// Setup the light...

	ObjectCreateStruct createStruct;
	INIT_OBJECTCREATESTRUCT(createStruct);

	createStruct.m_ObjectType = OT_LIGHT;
	createStruct.m_Flags = FLAG_VISIBLE | m_dwLightFlags;
	VEC_COPY(createStruct.m_Pos, vPos);
	ROT_COPY(createStruct.m_Rotation, rRot);

	m_hObject = m_pClientDE->CreateObject(&createStruct);

	if (m_hObject)
	{
		UpdateLightRadius();
		UpdateLightIntensity();
	}
	return DTRUE;
}


// ----------------------------------------------------------------------- //
//
//	ROUTINE:	CLightFX::Update
//
//	PURPOSE:
//
// ----------------------------------------------------------------------- //
DBOOL CLightFX::Update()
{
	if (!m_pClientDE) return DFALSE;

	if(m_hServerObject)
	{
		DVector vPos;
		m_pClientDE->GetObjectPos(m_hServerObject, &vPos);
		m_pClientDE->SetObjectPos(m_hObject,&vPos);
	}
	else
		return DFALSE;

	DDWORD dwFlags;
	m_pClientDE->GetObjectUserFlags(m_hServerObject, &dwFlags);
	DBOOL bOn = ((dwFlags & USRFLG_VISIBLE) != 0);

	dwFlags = m_pClientDE->GetObjectFlags(m_hObject);

	if (bOn)
	{
		if (m_nIntensityWaveform != WAVE_NONE)
			UpdateLightIntensity();
		if (m_nRadiusWaveform != WAVE_NONE)
			UpdateLightRadius();
		dwFlags |= FLAG_VISIBLE;
	}
	else
	{
        // Its NOT turned on, so reset the start time
        // So if there is a duration, then it will start timing when the switch is turned on
    	m_fStartTime = m_pClientDE->GetTime();
        
		m_fRadius = m_fRadiusMin;  // Effectively turn light off
		SetRadius(m_fRadius);

		dwFlags &= ~FLAG_VISIBLE;
	}
	m_pClientDE->SetObjectFlags(m_hObject, dwFlags);
	return DTRUE;
}

////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////



// The following are Light Radius related methods /////////////////////////////

// ----------------------------------------------------------------------- //
//
//	ROUTINE:	CLightFX::
//
//	PURPOSE:
//
// ----------------------------------------------------------------------- //
void CLightFX::UpdateLightRadius()
{
	// Determine a theta between 0 and 2PI
	DFLOAT fTheta = m_pClientDE->GetTime() * m_fRadiusFreq + m_fRadiusPhase;

	DFLOAT fValue = GetWaveValue(m_nRadiusWaveform, m_fRadiusMin, m_fRadiusMax, fTheta);

	SetRadius(fValue);
}



// ----------------------------------------------------------------------- //
//
//	ROUTINE:	CLightFX::
//
//	PURPOSE:
//
// ----------------------------------------------------------------------- //
void CLightFX::UpdateLightIntensity()
{
	// Determine a theta between 0 and 2PI
	DFLOAT fTheta = m_pClientDE->GetTime() * m_fIntensityFreq + m_fIntensityPhase;

	DFLOAT fValue = GetWaveValue(m_nIntensityWaveform, m_fIntensityMin, m_fIntensityMax, fTheta);

	SetColor(0.5f + m_vColor.x * fValue, 0.5f + m_vColor.y * fValue, 0.5f + m_vColor.z * fValue);
}




// ----------------------------------------------------------------------- //
//
//	ROUTINE:	CLightFX::
//
//	PURPOSE:
//
// ----------------------------------------------------------------------- //
void CLightFX::PlayRampSound(int nDirection)
{
	char *sound = DNULL;
    
    // Set the char pointer    
	if (nDirection == 1 && m_hstrRampUpSound)
	{
		sound = m_pClientDE->GetStringData(m_hstrRampUpSound);
	}
	else if (m_hstrRampDownSound)
	{
		sound = m_pClientDE->GetStringData(m_hstrRampDownSound);
	}

    // Play the sound if valid pointer
	if (sound && _mbstrlen(sound) > 0)
	{
		DFLOAT Radius = 1000.0f;
		PlaySoundFromObject(m_hObject, sound, Radius, SOUNDPRIORITY_MISC_HIGH);
	}

}


// ----------------------------------------------------------------------- //
//
//	ROUTINE:	CLightFX::
//
//	PURPOSE:
//
// ----------------------------------------------------------------------- //
void CLightFX::SetRadius(DFLOAT fRadius)
{
    if (fRadius > 10000.0f) fRadius = 10000.0f;
    if (fRadius < 0.0f)     fRadius = 0.0f;

	m_pClientDE->SetLightRadius(m_hObject, fRadius);
	m_fCurrentRadius = fRadius;
}




// ----------------------------------------------------------------------- //
//
//	ROUTINE:	CLightFX::
//
//	PURPOSE:
//
// ----------------------------------------------------------------------- //
void CLightFX::SetColor(DFLOAT fRedValue, DFLOAT fGreenValue, DFLOAT fBlueValue)
{
    if (fRedValue > 1.0f)       fRedValue = 1.0f;
    if (fRedValue < 0.0f)       fRedValue = 0.0f;
        
    if (fGreenValue > 1.0f)     fGreenValue = 1.0f;
    if (fGreenValue < 0.0f)     fGreenValue = 0.0f;
        
    if (fBlueValue > 1.0f)      fBlueValue = 1.0f;
    if (fBlueValue < 0.0f)      fBlueValue = 0.0f;

   	m_pClientDE->SetLightColor(m_hObject, fRedValue, fGreenValue, fBlueValue);
    
}