metaforce/Runtime/World/CLightParameters.hpp

#ifndef __URDE_CLIGHTPARAMETERS_HPP__
#define __URDE_CLIGHTPARAMETERS_HPP__

#include "RetroTypes.hpp"
#include "zeus/CColor.hpp"
#include "Character/CActorLights.hpp"

namespace urde
{

class CLightParameters
{
public:
    enum class EShadowTesselation
    {
        Zero
    };

    enum class EWorldLightingOptions
    {
        Zero,
        NormalWorld,
        NoShadowCast,
        DisableWorld
    };

    enum class ELightRecalculationOptions
    {
        LargeFrameCount,
        EightFrames,
        FourFrames,
        OneFrame
    };

private:
    bool x4_a = false;
    float x8_b = 0.f;
    EShadowTesselation xc_shadowTesselation = EShadowTesselation::Zero;
    float x10_d = 0.f;
    float x14_e = 0.f;
    zeus::CColor x18_noLightsAmbient;
    bool x1c_makeLights = false;
    bool x1d_ambientChannelOverflow = false;
    EWorldLightingOptions x20_worldLightingOptions = EWorldLightingOptions::Zero;
    ELightRecalculationOptions x24_lightRecalcOpts = ELightRecalculationOptions::EightFrames;
    s32 x28_layerIdx = 0;
    zeus::CVector3f x2c_actorPosBias;
    s32 x38_maxDynamicLights = 4;
    s32 x3c_maxAreaLights = 4;
public:
    CLightParameters() = default;
    CLightParameters(bool a, float b, EShadowTesselation shadowTess, float d, float e, const zeus::CColor& noLightsAmbient,
                     bool makeLights, EWorldLightingOptions lightingOpts, ELightRecalculationOptions lightRecalcOpts,
                     const zeus::CVector3f& actorPosBias, s32 maxDynamicLights, s32 maxAreaLights, bool ambChannelOverflow, s32 layerIdx)
    : x4_a(a), x8_b(b), xc_shadowTesselation(shadowTess), x10_d(d), x14_e(e), x18_noLightsAmbient(noLightsAmbient), x1c_makeLights(makeLights),
      x1d_ambientChannelOverflow(ambChannelOverflow), x20_worldLightingOptions(lightingOpts), x24_lightRecalcOpts(lightRecalcOpts),
      x28_layerIdx(layerIdx), x2c_actorPosBias(actorPosBias), x38_maxDynamicLights(maxDynamicLights), x3c_maxAreaLights(maxAreaLights)
    {
        if (x38_maxDynamicLights > 4 || x38_maxDynamicLights == -1)
            x38_maxDynamicLights = 4;
        if (x3c_maxAreaLights > 4 || x3c_maxAreaLights == -1)
            x3c_maxAreaLights = 4;
    }
    static CLightParameters None() {return CLightParameters();}

    static u32 GetFramesBetweenRecalculation(ELightRecalculationOptions opts)
    {
        if (opts == ELightRecalculationOptions::LargeFrameCount)
            return 0x3FFFFFFF;
        else if (opts == ELightRecalculationOptions::EightFrames)
            return 8;
        else if (opts == ELightRecalculationOptions::FourFrames)
            return 4;
        else if (opts == ELightRecalculationOptions::OneFrame)
            return 1;
        return 8;
    }

    std::unique_ptr<CActorLights> MakeActorLights() const
    {
        if (!x1c_makeLights)
            return {};

        u32 updateFrames = GetFramesBetweenRecalculation(x24_lightRecalcOpts);
        CActorLights* lights = new CActorLights(updateFrames, x2c_actorPosBias, x38_maxDynamicLights,
                                                x3c_maxAreaLights, x1d_ambientChannelOverflow, x28_layerIdx == 1,
                                                x20_worldLightingOptions == EWorldLightingOptions::DisableWorld,
                                                0.1f);
        if (x20_worldLightingOptions == EWorldLightingOptions::NoShadowCast)
            lights->SetCastShadows(false);
        if (x3c_maxAreaLights == 0)
            lights->SetAmbientColor(x18_noLightsAmbient);
        return std::unique_ptr<CActorLights>(lights);
    }
};

}

#endif // __URDE_CLIGHTPARAMETERS_HPP__