mirror of https://github.com/AxioDL/metaforce.git
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
#include "Runtime/Particle/CUVElement.hpp"
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/* Documentation at: https://wiki.axiodl.com/w/Particle_Script#UV_Elements */
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namespace metaforce {
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CUVEAnimTexture::CUVEAnimTexture(TToken<CTexture>&& tex, std::unique_ptr<CIntElement>&& tileW,
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std::unique_ptr<CIntElement>&& tileH, std::unique_ptr<CIntElement>&& strideW,
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std::unique_ptr<CIntElement>&& strideH, std::unique_ptr<CIntElement>&& cycleFrames,
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bool loop)
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: x4_tex(std::move(tex)), x24_loop(loop), x28_cycleFrames(std::move(cycleFrames)) {
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tileW->GetValue(0, x10_tileW);
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tileH->GetValue(0, x14_tileH);
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strideW->GetValue(0, x18_strideW);
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strideH->GetValue(0, x1c_strideH);
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const int width = int(x4_tex.GetObj()->GetWidth());
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const int height = int(x4_tex.GetObj()->GetHeight());
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const float widthF = float(width);
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const float heightF = float(height);
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const int xTiles = std::max(1, width / x18_strideW);
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const int yTiles = std::max(1, height / x1c_strideH);
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x20_tiles = xTiles * yTiles;
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x2c_uvElems.reserve(x20_tiles);
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for (int y = yTiles - 1; y >= 0; --y) {
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for (int x = 0; x < xTiles; ++x) {
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const int px = x18_strideW * x;
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const int px2 = px + x10_tileW;
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const int py = x1c_strideH * y;
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const int py2 = py + x14_tileH;
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x2c_uvElems.push_back({
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float(px) / widthF,
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float(py) / heightF,
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float(px2) / widthF,
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float(py2) / heightF,
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});
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}
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}
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}
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void CUVEAnimTexture::GetValueUV(int frame, SUVElementSet& valOut) const {
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int cv = 1;
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x28_cycleFrames->GetValue(frame, cv);
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float cvf = float(cv) / float(x20_tiles);
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cvf = float(frame) / cvf;
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int tile = int(cvf);
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if (x24_loop) {
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// HACK
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// Check bad values for cvf
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tile = !(std::isnan(cvf) || std::isinf(cvf)) && int(cvf) >= 0 ? int(cvf) : 0;
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if (tile >= x20_tiles) {
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tile = tile % x20_tiles;
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}
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} else {
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if (cvf >= float(x20_tiles)) {
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tile = x20_tiles - 1;
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}
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}
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valOut = x2c_uvElems[tile];
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}
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} // namespace metaforce
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