mirror of https://github.com/AxioDL/metaforce.git
72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
#include "Runtime/World/CWorldLight.hpp"
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#include "Runtime/Streams/IOStreams.hpp"
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#include <cfloat>
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namespace metaforce {
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CWorldLight::CWorldLight(CInputStream& in)
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: x0_type(EWorldLightType(in.ReadLong()))
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, x4_color(in.Get<zeus::CVector3f>())
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, x10_position(in.Get<zeus::CVector3f>())
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, x1c_direction(in.Get<zeus::CVector3f>())
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, x28_q(in.ReadFloat())
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, x2c_cutoffAngle(in.ReadFloat())
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, x30_(in.ReadFloat())
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, x34_castShadows(in.ReadBool())
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, x38_(in.ReadFloat())
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, x3c_falloff(EFalloffType(in.ReadLong()))
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, x40_(in.ReadFloat()) {}
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std::tuple<float, float, float> CalculateLightFalloff(EFalloffType falloff, float q) {
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float constant = 0.f;
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float linear = 0.f;
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float quadratic = 0.f;
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if (falloff == EFalloffType::Constant)
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constant = 2.f / q;
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else if (falloff == EFalloffType::Linear)
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linear = 250.f / q;
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else if (falloff == EFalloffType::Quadratic)
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quadratic = 25000.f / q;
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return {constant, linear, quadratic};
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}
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CLight CWorldLight::GetAsCGraphicsLight() const {
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zeus::CVector3f float_color = x4_color;
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float q = x28_q;
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if (q < FLT_EPSILON)
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q = 0.000001f;
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if (x0_type == EWorldLightType::LocalAmbient) {
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float_color *= zeus::CVector3f(q);
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if (float_color.x() >= 1.f)
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float_color.x() = 1.f;
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if (float_color.y() >= 1.f)
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float_color.y() = 1.f;
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if (float_color.z() >= 1.f)
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float_color.z() = 1.f;
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return CLight::BuildLocalAmbient(x10_position,
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zeus::CColor(float_color.x(), float_color.y(), float_color.z(), 1.f));
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} else if (x0_type == EWorldLightType::Directional) {
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return CLight::BuildDirectional(x1c_direction, zeus::CColor{x4_color.x(), x4_color.y(), x4_color.z(), 1.f});
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} else if (x0_type == EWorldLightType::Spot) {
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CLight light =
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CLight::BuildSpot(x10_position, x1c_direction.normalized(),
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zeus::CColor{x4_color.x(), x4_color.y(), x4_color.z(), 1.f}, x2c_cutoffAngle * .5f);
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const auto [constant, linear, quadratic] = CalculateLightFalloff(x3c_falloff, x28_q);
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light.SetAttenuation(constant, linear, quadratic);
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return light;
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}
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const auto [distC, distL, distQ] = CalculateLightFalloff(x3c_falloff, x28_q);
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return CLight::BuildCustom(x10_position, zeus::CVector3f{1.f, 0.f, 0.f},
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zeus::CColor{x4_color.x(), x4_color.y(), x4_color.z(), 1.f}, distC, distL, distQ, 1.f, 0.f,
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0.f);
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}
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} // namespace metaforce
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