GenericChordstream.h

#pragma once
#include "../../PatternModHelpers.h"
 
struct GChordStreamMod
{
    const CalcPatternMod _pmod = GChordStream;
    // const std::vector<CalcPatternMod> _dbg = { JSS, JSJ };
    const std::string name = "GenericChordStreamMod";
    const int min_tap_size = jump;
 
#pragma region params
    float min_mod = 0.6F;
    float max_mod = 1.1F;
    float mod_base = 0.F;
    float prop_buffer = 1.F;
 
    float total_prop_min = min_mod;
    float total_prop_max = max_mod;
    float total_prop_scaler = 2.714F; // ~19/7
 
    float split_hand_pool = 1.5F;
    float split_hand_min = 0.9F;
    float split_hand_max = 1.F;
    float split_hand_scaler = 1.F;
 
    float jack_pool = 1.35F;
    float jack_min = 0.5F;
    float jack_max = 1.F;
    float jack_scaler = 1.F;
 
    float decay_factor = 0.05F;
 
    const std::vector<std::pair<std::string, float*>> _params{
        { "min_mod", &min_mod },
        { "max_mod", &max_mod },
        { "mod_base", &mod_base },
        { "prop_buffer", &prop_buffer },
 
        { "total_prop_scaler", &total_prop_scaler },
        { "total_prop_min", &total_prop_min },
        { "total_prop_max", &total_prop_max },
 
        { "split_hand_pool", &split_hand_pool },
        { "split_hand_min", &split_hand_min },
        { "split_hand_max", &split_hand_max },
        { "split_hand_scaler", &split_hand_scaler },
 
        { "jack_pool", &jack_pool },
        { "jack_min", &jack_min },
        { "jack_max", &jack_max },
        { "jack_scaler", &jack_scaler },
 
        { "decay_factor", &decay_factor },
    };
#pragma endregion params and param map
 
    float total_prop = 0.F;
    float jumptrill_prop = 0.F;
    float jack_prop = 0.F;
    float last_mod = min_mod;
    float pmod = min_mod;
    float t_taps = 0.F;
 
    // inline void set_dbg(std::vector<float> doot[], const int& i)
    //{
    //      doot[JSS][i] = jumptrill_prop;
    //      doot[JSJ][i] = jack_prop;
    //}
 
    void full_reset()
    {
        last_mod = min_mod;
    }
 
    void decay_mod()
    {
        pmod = std::clamp(last_mod - decay_factor, min_mod, max_mod);
        last_mod = pmod;
    }
 
    auto operator()(const metaItvInfo& mitvi) -> float
    {
        const auto& itvi = mitvi._itvi;
 
        // empty interval, don't decay js mod or update last_mod
        if (itvi.total_taps == 0) {
            return neutral;
        }
 
        // at least 1 tap but no jumps
        if (itvi.taps_by_size.at(min_tap_size) == 0) {
            decay_mod();
            return pmod;
        }
 
        /* end case optimizations */
 
        t_taps = static_cast<float>(itvi.total_taps);
 
        // creepy banana
        total_prop =
          static_cast<float>(itvi.taps_by_size.at(min_tap_size) + prop_buffer) /
          (t_taps - prop_buffer) * total_prop_scaler;
        total_prop =
          std::clamp(fastsqrt(total_prop), total_prop_min, total_prop_max);
 
        // punish lots splithand jumptrills
        // uhh this might also catch oh jumptrills can't remember
        jumptrill_prop = std::clamp(
          split_hand_pool - (static_cast<float>(mitvi.not_js) / t_taps),
          split_hand_min,
          split_hand_max);
 
        // downscale by jack density rather than upscale like cj
        // theoretically the ohjump downscaler should handle
        // this but handling it here gives us more flexbility
        // with the ohjump mod
        jack_prop = std::clamp(
          jack_pool - (static_cast<float>(mitvi.actual_jacks) / t_taps),
          jack_min,
          jack_max);
 
        pmod =
          std::clamp(total_prop * jumptrill_prop * jack_prop, min_mod, max_mod);
 
        if (mitvi.dunk_it) {
            pmod *= 0.99F;
        }
 
        // set last mod, we're using it to create a decaying mod that won't
        // result in extreme spikiness if files alternate between js and
        // hs/stream
        last_mod = pmod;
 
        return pmod;
    }
};