void CHeadBobMgr::UpdateHeadBob()
{
CMoveMgr* pMoveMgr = g_pPlayerMgr->GetMoveMgr();
if (!pMoveMgr) return;
LTBOOL bZoomed = g_pPlayerMgr->IsZoomed();
uint32 dwPlayerFlags = g_pPlayerMgr->GetPlayerFlags();
// This frame time is used since unlike ClientDE::GetFrameTime() the
// max value is controlled by the game...
LTFLOAT fFrameTime = g_pGameClientShell->GetFrameTime();
LTFLOAT fTime = g_pLTClient->GetTime();
LTBOOL bRunning = (LTBOOL) !!(dwPlayerFlags & BC_CFLG_RUN);
LTFLOAT fMoveDist = pMoveMgr->GetVelocity().Mag() * fFrameTime;
LTBOOL bFootstep = LTFALSE;
LTBOOL bLeftFoot = LTFALSE;
LTFLOAT fPace = 0.0f;
if (pMoveMgr->GetVehicleMgr()->IsVehiclePhysics())
{
fPace = MATH_CIRCLE * g_vtVehiclePaceAdjust.GetFloat();
}
else if (bRunning)
{
fPace = MATH_CIRCLE * g_vtRunPaceAdjust.GetFloat();
}
else
{
fPace = MATH_CIRCLE * g_vtWalkPaceAdjust.GetFloat();
}
// Make sure bob phase and sway phase start at the right values...
if (m_fBobAmp == 0.0f)
{
m_fBobPhase = 0.0f;
m_fSwayPhase = 0.0f;
}
else // Normal processing...
{
// Bob phase should be between MATH_PI and MATH_CIRCLE so that the
// sin(m_fBobPhase) is always between -1 and 0...
m_fBobPhase += (fFrameTime * fPace);
if (m_fBobPhase > MATH_CIRCLE)
{
m_fBobPhase -= MATH_PI;
}
else if (m_fBobPhase < MATH_PI)
{
m_fBobPhase += MATH_PI;
}
m_fSwayPhase += (fFrameTime * fPace);
if (m_fSwayPhase > MATH_CIRCLE)
{
m_fSwayPhase -= MATH_CIRCLE;
}
}
// See if it is time to play a footstep sound...
if ((m_fSwayPhase > MATH_CIRCLE * 0.25f) &&
(m_fSwayPhase <= MATH_CIRCLE * 0.75f))
{
if (s_bCanDoLeftFootstep)
{
bLeftFoot = LTFALSE;
bFootstep = LTTRUE;
s_bCanDoLeftFootstep = LTFALSE;
s_bCanDoRightFootstep = LTTRUE;
}
}
else if (m_fSwayPhase > MATH_CIRCLE * 0.75f)
{
if (s_bCanDoRightFootstep)
{
bLeftFoot = LTTRUE;
bFootstep = LTTRUE;
s_bCanDoLeftFootstep = LTTRUE;
s_bCanDoRightFootstep = LTFALSE;
}
}
LTBOOL bMoving = LTFALSE;
LTFLOAT t;
uint32 dwTestFlags = (BC_CFLG_MOVING); // | BC_CFLG_DUCK);
if (fMoveDist > 0.1f)
{
bMoving = !!(dwPlayerFlags & dwTestFlags);
}
// If we're not moving, decay the head bob...
if (!bMoving)
{
s_fBobStartTime = -1.0f;
if (s_fBobDecayStartTime < 0.0f)
{
// Calculate what the current bobamp percent is...
t = (1.0f - m_fBobAmp / g_vtMaxBobAmp.GetFloat());
s_fBobDecayStartTime = fTime - (g_vtBobDecayTime.GetFloat() * t);
}
LTFLOAT fDur = (fTime - s_fBobDecayStartTime);
if (fDur <= g_vtBobDecayTime.GetFloat())
{
t = fDur / g_vtBobDecayTime.GetFloat(); // 0 to 1
t = WaveFn_SlowOff(t);
t = 1.0f - t; // 1 to 0
m_fBobAmp = t * g_vtMaxBobAmp.GetFloat();
if (m_fBobAmp < 0.0f)
{
m_fBobAmp = 0.0f;
}
}
else
{
m_fBobAmp = 0.0f;
}
}
else // We're moving...
{
s_fBobDecayStartTime = -1.0f;
// If we just started bobing, ramp up the bob...
if (s_fBobStartTime < 0.0f)
{
// Calculate what the current bobamp percent is...
t = m_fBobAmp / g_vtMaxBobAmp.GetFloat();
s_fBobStartTime = fTime - (g_vtBobDecayTime.GetFloat() * t);
}
LTFLOAT fDur = (fTime - s_fBobStartTime);
if (fDur <= g_vtBobDecayTime.GetFloat())
{
t = fDur / g_vtBobDecayTime.GetFloat(); // 0 to 1
t = WaveFn_SlowOn(t);
m_fBobAmp = t * g_vtMaxBobAmp.GetFloat();
if (m_fBobAmp > g_vtMaxBobAmp.GetFloat())
{
m_fBobAmp = g_vtMaxBobAmp.GetFloat();
}
}
else
{
m_fBobAmp = g_vtMaxBobAmp.GetFloat();
}
}
// Update the bob...
if (!bZoomed)
{
m_fBobHeight = g_vtBobV.GetFloat() * m_fBobAmp * (float)sin(m_fBobPhase);
}
// Update the weapon model bobbing...
IClientWeaponBase *pClientWeapon = g_pPlayerMgr->GetCurrentClientWeapon();
if ( pClientWeapon && !bZoomed )
{
LTFLOAT fSwayHeight = g_vtSwayV.GetFloat() * m_fBobAmp * (float)sin(m_fSwayPhase * 2);
LTFLOAT fSwayWidth = g_vtSwayH.GetFloat() * m_fBobAmp * (float)sin(m_fSwayPhase - (MATH_PI/3));
// No weapon bob if vehicle mode...
if (pMoveMgr->GetVehicleMgr()->IsVehiclePhysics())
{
fSwayWidth = fSwayHeight = 0.0f;
}
fSwayHeight *= g_vtWeaponSway.GetFloat();
fSwayWidth *= g_vtWeaponSway.GetFloat();
pClientWeapon->UpdateBob(fSwayWidth, fSwayHeight);
}
// Update the head cant...
if (!bZoomed && !pMoveMgr->GetVehicleMgr()->IsVehiclePhysics())
{
LTFLOAT fRollAdjust = g_vtRollAdjust.GetFloat() * (float)sin(m_fSwayPhase);
// Turn head bob up/down...
fRollAdjust *= g_vtHeadBobAdjust.GetFloat();
if (m_fBobAmp == 0.0f)
{
fRollAdjust = 0.0f;
}
g_pPlayerMgr->SetRoll(fRollAdjust);
}
// Play foot step sounds at the appropriate time...
if (bMoving && bFootstep)
{
CCharacterFX* pCharFX = pMoveMgr->GetCharacterFX();
if (pCharFX)
{
SurfaceType eSurf = pMoveMgr->GetStandingOnSurface();
eSurf = (eSurf == ST_UNKNOWN ? pCharFX->GetLastSurface() : eSurf);
LTVector vPos;
g_pLTClient->GetObjectPos(pMoveMgr->GetObject(), &vPos);
pCharFX->PlayMovementSound(vPos, eSurf, bLeftFoot);
}
}
}
