54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
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#include "classicflyinganimationscenario.h"
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#include "graphics/classicsprite.h"
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void ClassicFlyingAnimationScenario::launch(const std::shared_ptr<ClassicSprite> sprite, const kku::microsec& time_begin, const kku::microsec &time_end)
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{
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_sprite = sprite;
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_time_begin = time_begin;
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_time_end = time_end;
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_percentage = ((_time_end - _time_begin) * 0.01);
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}
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float ClassicFlyingAnimationScenario::getPoint(const kku::Point& point, float perc) const
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{
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return point.x + ((point.y - point.x) * perc);
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}
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void ClassicFlyingAnimationScenario::update(const kku::microsec& music_offset)
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{
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const auto crd = _sprite->getPosition();
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auto update_time = music_offset - _time_begin;
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float i = update_time / _percentage * 0.01;
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float xa = getPoint(kku::Point{crd.x + 20, crd.x + 90}, i);
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float ya = getPoint(kku::Point{crd.y - 600, crd.y - 150}, i);
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float xb = getPoint(kku::Point{crd.x + 90, crd.x}, i);
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float yb = getPoint(kku::Point{crd.y - 150, crd.y}, i);
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_sprite->setTrailPosition(kku::Point(getPoint( kku::Point{xa, xb}, i ), getPoint( kku::Point{ya, yb}, i )));
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bool pastPerfectScore = (i >= 1);
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if (pastPerfectScore)
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fadeTrailSprite();
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}
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bool ClassicFlyingAnimationScenario::isDone() const
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{
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return false;
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}
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void ClassicFlyingAnimationScenario::fadeTrailSprite() const
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{
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auto fill_color = _sprite->getTrailColor();
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if (fill_color.alpha == 0)
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return;
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auto new_alpha = (int(fill_color.alpha) - 15) < 0 ? 0 : int(fill_color.alpha) - 15;
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fill_color.alpha = new_alpha;
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_sprite->setTrailColor(fill_color);
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}
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