mirror of https://github.com/AxioDL/metaforce.git
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
#include "CFluidUVMotion.hpp"
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#include "zeus/Math.hpp"
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namespace urde
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{
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CFluidUVMotion::CFluidUVMotion(float a, float b, const CFluidUVMotion::SFluidLayerMotion& c,
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const CFluidUVMotion::SFluidLayerMotion& d, const CFluidUVMotion::SFluidLayerMotion& e)
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: x4c_(1.f/a)
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, x50_(b)
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{
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x0_fluidLayers.resize(3);
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x0_fluidLayers[0] = c;
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x0_fluidLayers[1] = d;
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x0_fluidLayers[2] = e;
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}
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CFluidUVMotion::CFluidUVMotion(float, float)
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{}
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void CFluidUVMotion::CalculateFluidTextureOffset(float f31, float offsets[3][2])
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{
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float f28 = (f31 * x4c_) * zeus::fastCosF(x50_);
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float f29 = (f31 * x4c_) / zeus::fastSinF(x50_);
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for (u32 i = 0 ; i<x0_fluidLayers.size() ; ++i)
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{
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const SFluidLayerMotion& layer = x0_fluidLayers[i];
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float f30 = f31 * layer.x4_a;
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float f1 = f30 - std::floor(f30);
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float f27;
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float f26;
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switch(layer.x0_motion)
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{
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case EFluidUVMotion::One:
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{
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f30 = (M_PIF * 2) * f1;
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f27 = layer.xc_c * zeus::fastSinF(f30);
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f26 = layer.xc_c * zeus::fastCosF(f30);
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}
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break;
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case EFluidUVMotion::Two:
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{
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f27 = 0.f;
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f26 = layer.xc_c * zeus::fastCosF((M_PIF * 2) * f1);
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}
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break;
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default:
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f27 = f26 = 0.f;
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break;
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}
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float x = f26 * zeus::fastSinF(layer.x8_b) + (f27 * zeus::fastCosF(layer.x8_b) + f29);
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float y = f27 * zeus::fastSinF(layer.x8_b) + (f26 * zeus::fastCosF(layer.x8_b) + f28);
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offsets[i][0] = float(x - floor(x));
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offsets[i][1] = float(y - floor(y));
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}
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}
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}
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