倍速

在本章中，您将会学习到:

• 倍速变化的绘制

倍速变化

倍速变化原型的实现与前面章节的 BPM 变化原型非常类似。

class Sprites {
	public:

    // ...
    int timeScaleChangeLine = 7;
}Sprites;

auto skins = defineSkins<class Sprites>({
    // ...
    { SkinSpriteName.GridYellow, Sprites.timeScaleChangeLine }
});

class TimeScaleChange: public Archetype {
    public:

    static constexpr const char* name = "#TIMESCALE_CHANGE";

    vector<pair<string, int> > imports = {
        { "#BEAT", 0 }, 
        { "#TIMESCALE", 1 }
    };
    Variable<EntityDataId> beat(0, true);
    Variable<EntityDataId> timeScale(1, true);

    SonolusApi render() {
        FUNCBEGIN
        line(Sprites.timeScaleChangeLine, beat, 0.5);
        print(timeScale, BeatToTime(beat), PrintFormat.TimeScale, -1, PrintColor.Yellow, true);
        return VOID;
    }
};

// ...

#ifdef preview
using namespace previewData;
#include"preview/Initialization.cpp"
#include"preview/Stage.cpp"
#include"preview/Note.cpp"
#include"preview/BpmChange.cpp"
+ #include"preview/TimeScaleChange.cpp"
#elif watch

// ...

// ...

#ifdef preview
    buffer data, configuration;
    build<
        // Replace with your archetypes here
        Initialization,
        Stage,
        Note,
        BpmChange,
+       TimeScaleChange
    >(configuration, data);

// ...