7d31c76f47
Batch #16446 by Yommy: 0 byte-identical, 1 confirmed by peer review. - fn_17876 MovementRouteInterpolation::Sample: logic confirmed by peer review Peer-reviewed-by: eAthena, youko, kyoshi Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
58 lines
2.3 KiB
C++
58 lines
2.3 KiB
C++
#include "Contents/MovementRouteInterpolation.h"
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// OFFSET: 0x00AD92C0
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// FUNCTION: fn_17876
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int MovementRouteInterpolation::Sample(std::uint32_t tick, float* x, float* y, int* metadata) {
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if (this->points.empty()) {
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return -1;
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}
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if (this->points.front().tick > tick) {
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*x = static_cast<float>(this->points.front().x);
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*y = static_cast<float>(this->points.front().y);
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*metadata = this->points[1].metadata;
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return 0;
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}
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std::uint32_t index = this->segment;
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for (; index < this->points.size() - 1; ++index) {
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if (this->points[index].tick <= tick && tick < this->points[index + 1].tick) {
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const float elapsed = static_cast<float>(static_cast<std::int32_t>(tick - this->points[index].tick));
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float originX;
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float deltaX;
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float deltaY;
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if (index == 0) {
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originX = this->startX;
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deltaX = static_cast<float>(this->points[index + 1].x) - originX;
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deltaY = static_cast<float>(this->points[index + 1].y) - this->startY;
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} else {
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originX = static_cast<float>(this->points[index].x);
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deltaX = static_cast<float>(this->points[index + 1].x - this->points[index].x);
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deltaY = static_cast<float>(this->points[index + 1].y - this->points[index].y);
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}
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const float duration = static_cast<float>(this->points[index + 1].tick - this->points[index].tick);
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const float offsetY = elapsed * deltaY;
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*x = originX + (deltaX * elapsed) / duration;
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const float yDuration = static_cast<float>(this->points[index + 1].tick - this->points[index].tick);
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const float originY = index == 0 ? this->startY : static_cast<float>(this->points[index].y);
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*y = originY + offsetY / yDuration;
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const std::uint32_t midpoint = this->points[index].tick + ((this->points[index + 1].tick - this->points[index].tick) >> 1);
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*metadata = tick < midpoint ? this->points[index].metadata : this->points[index + 1].metadata;
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this->segment = index;
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return static_cast<int>(index);
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}
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}
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*metadata = this->points[index].metadata;
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*x = static_cast<float>(this->points[index].x);
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*y = static_cast<float>(this->points[index].y);
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return -1;
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}
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// OFFSET: 0x00AD9500
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// FUNCTION: fn_17877
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std::uint32_t MovementRouteInterpolation::Segment() const {
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return this->segment;
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}
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