metaforce/Runtime/Camera/CCameraShakeData.cpp

#include "CCameraShakeData.hpp"
#include "World/ScriptLoader.hpp"
#include "CStateManager.hpp"
#include "World/CPlayer.hpp"

namespace urde
{

SCameraShakePoint SCameraShakePoint::LoadCameraShakePoint(CInputStream& in)
{
    u32 useEnvelope = ScriptLoader::LoadParameterFlags(in);
    float attackTime = in.readFloatBig();
    float sustainTime = in.readFloatBig();
    float duration = in.readFloatBig();
    float magnitude = in.readFloatBig();
    return {useEnvelope != 0, attackTime, sustainTime, duration, magnitude};
}

CCameraShakerComponent CCameraShakerComponent::LoadNewCameraShakerComponent(CInputStream& in)
{
    u32 useModulation = ScriptLoader::LoadParameterFlags(in);
    SCameraShakePoint am = SCameraShakePoint::LoadCameraShakePoint(in);
    SCameraShakePoint fm = SCameraShakePoint::LoadCameraShakePoint(in);
    return {useModulation != 0, am, fm};
}

CCameraShakeData::CCameraShakeData(float duration, float sfxDist, u32 flags, const zeus::CVector3f& sfxPos,
                                   const CCameraShakerComponent& shaker1, const CCameraShakerComponent& shaker2,
                                   const CCameraShakerComponent& shaker3)
: x0_duration(duration), x8_shakerX(shaker1), x44_shakerY(shaker2), x80_shakerZ(shaker3),
  xc0_flags(flags), xc4_sfxPos(sfxPos), xd0_sfxDist(sfxDist)
{}

CCameraShakeData::CCameraShakeData(float duration, float magnitude)
: CCameraShakeData(duration, 100.f, 0, zeus::CVector3f::skZero, CCameraShakerComponent{}, CCameraShakerComponent{},
                   CCameraShakerComponent{1,
                   SCameraShakePoint{0, 0.25f * duration, 0.f, 0.75f * duration, magnitude},
                   SCameraShakePoint{1, 0.f, 0.f, 0.5f * duration, 2.f}})
{}

CCameraShakeData CCameraShakeData::BuildLandingCameraShakeData(float duration, float magnitude)
{
    return {duration, 100.f, 0, zeus::CVector3f::skZero,
            CCameraShakerComponent(1,
            SCameraShakePoint(0, 0.15f * duration, 0.f, 0.85f * duration, magnitude),
            SCameraShakePoint(1, 0.f, 0.f, 0.4f * duration, 1.5f)),
            CCameraShakerComponent(),
            CCameraShakerComponent(1,
            SCameraShakePoint(0, 0.25f * duration, 0.f, 0.75f * duration, magnitude),
            SCameraShakePoint(1, 0.f, 0.f, 0.5f * duration, 2.f))};
}

CCameraShakeData CCameraShakeData::BuildProjectileCameraShake(float duration, float magnitude)
{
    return {duration, 100.f, 0, zeus::CVector3f::skZero,
            CCameraShakerComponent(1,
            SCameraShakePoint(0, 0.f, 0.f, duration, magnitude),
            SCameraShakePoint(1, 0.f, 0.f, 0.5f * duration, 3.f)),
            CCameraShakerComponent(),
            CCameraShakerComponent()};
}

CCameraShakeData CCameraShakeData::BuildMissileCameraShake(float duration, float magnitude, float sfxDistance,
                                                           const zeus::CVector3f& sfxPos)
{
    CCameraShakeData ret(duration, magnitude);
    ret.SetSfxPositionAndDistance(sfxPos, sfxDistance);
    return ret;
}

CCameraShakeData CCameraShakeData::BuildPhazonCameraShakeData(float duration, float magnitude)
{
    return {duration, 100.f, 0, zeus::CVector3f::skZero,
            CCameraShakerComponent(1,
                                   SCameraShakePoint(0, 0.15f * duration, 0.f, 0.25f * duration, magnitude),
                                   SCameraShakePoint(1, 0.f, 0.f, 0.4f * duration, 0.3f)),
            CCameraShakerComponent(),
            CCameraShakerComponent(1,
                                   SCameraShakePoint(0, 0.25f * duration, 0.f, 0.25f * duration, magnitude),
                                   SCameraShakePoint(1, 0.f, 0.f, 0.5f * duration, 0.5f))};
}

void SCameraShakePoint::Update(float curTime)
{
    float offTimePoint = xc_attackTime + x10_sustainTime;
    float factor = 1.f;
    if (curTime < xc_attackTime && xc_attackTime > 0.f)
        factor = zeus::clamp(0.f, curTime / xc_attackTime, 1.f);
    if (curTime >= offTimePoint && x14_duration > 0.f)
        factor = 1.f - (curTime - offTimePoint) / x14_duration;
    x4_value = x8_magnitude * factor;
}

void CCameraShakerComponent::Update(float curTime, float duration, float distAtt)
{
    if (std::fabs(duration) < 0.00001f || !x4_useModulation)
    {
        x38_value = 0.f;
        return;
    }

    x20_fm.Update(curTime);
    float freq = 1.f + x20_fm.GetValue();
    x8_am.Update(curTime);
    x38_value = x8_am.GetValue() * std::sin(2.f * M_PIF * (duration - curTime) * freq);
    x38_value *= distAtt;
}

void CCameraShakeData::Update(float dt, CStateManager& mgr)
{
    x4_curTime += dt;
    float distAtt = 1.f;
    if (xc0_flags & 0x1)
        distAtt = 1.f - zeus::clamp(0.f, (xc4_sfxPos - mgr.GetPlayer().GetTranslation()).magnitude() / xd0_sfxDist, 1.f);
    x8_shakerX.Update(x4_curTime, x0_duration, distAtt);
    x44_shakerY.Update(x4_curTime, x0_duration, distAtt);
    x80_shakerZ.Update(x4_curTime, x0_duration, distAtt);
}

zeus::CVector3f CCameraShakeData::GetPoint() const
{
    return {x8_shakerX.GetValue(), x44_shakerY.GetValue(), x80_shakerZ.GetValue()};
}

float CCameraShakeData::GetMaxAMComponent() const
{
    float ret = 0.f;
    if (x8_shakerX.x4_useModulation)
        ret = x8_shakerX.x8_am.GetValue();
    if (x44_shakerY.x4_useModulation)
        ret = std::max(ret, x44_shakerY.x8_am.GetValue());
    if (x80_shakerZ.x4_useModulation)
        ret = std::max(ret, x80_shakerZ.x8_am.GetValue());
    return ret;
}

float CCameraShakeData::GetMaxFMComponent() const
{
    float ret = 0.f;
    if (x8_shakerX.x4_useModulation)
        ret = x8_shakerX.x20_fm.GetValue();
    if (x44_shakerY.x4_useModulation)
        ret = std::max(ret, x44_shakerY.x20_fm.GetValue());
    if (x80_shakerZ.x4_useModulation)
        ret = std::max(ret, x80_shakerZ.x20_fm.GetValue());
    return ret;
}

CCameraShakeData CCameraShakeData::LoadCameraShakeData(CInputStream& in)
{
    float xMag = in.readFloatBig();
    in.readFloatBig();
    float yMag = in.readFloatBig();
    in.readFloatBig();
    float zMag = in.readFloatBig();
    in.readFloatBig();
    float duration = in.readFloatBig();

    SCameraShakePoint xAM(0, 0.f, 0.f, duration, 2.f * xMag);
    SCameraShakePoint yAM(0, 0.f, 0.f, duration, 2.f * yMag);
    SCameraShakePoint zAM(0, 0.f, 0.f, duration, 2.f * zMag);
    SCameraShakePoint xFM(0, 0.f, 0.f, 0.5f * duration, 3.f);
    SCameraShakePoint yFM(0, 0.f, 0.f, 0.5f * duration, 0.f);
    SCameraShakePoint zFM(0, 0.f, 0.f, 0.5f * duration, 3.f);

    CCameraShakerComponent shakerX(1, xAM, xFM);
    CCameraShakerComponent shakerY;
    CCameraShakerComponent shakerZ(1, zAM, zFM);

    return {duration, 100.f, 0, zeus::CVector3f::skZero, shakerX, shakerY, shakerZ};
}

const CCameraShakeData CCameraShakeData::skChargedShotCameraShakeData =
    {0.3f, 100.f, 0, zeus::CVector3f::skZero, CCameraShakerComponent(),
     CCameraShakerComponent(1, {0, 0.f, 0.f, 0.3f, -1.f}, {1, 0.f, 0.f, 0.05f, 0.3f}),
     CCameraShakerComponent()};

}