move chaos mod

src/Etterna/Globals/MinaCalc/Dependent/ChaosMod.h

@@ -0,0 +1,99 @@
+#pragma once
+#include <string>
+#include <array>
+#include <vector>
+
+#include "Etterna/Models/NoteData/NoteDataStructures.h"
+#include "Etterna/Globals/MinaCalc/CalcWindow.h"
+
+using std::pair;
+using std::vector;
+
+// slightly different implementation of the old chaos mod, basically picks up
+// polyishness and tries to detect awkward transitions
+
+static const CalcPatternMod _pmod = Chaos;
+static const std::string name = "ChaosMod";
+
+struct ChaosMod
+{
+#pragma region params
+
+	float min_mod = 0.95F;
+	float max_mod = 1.05F;
+	float base = -0.1F;
+
+	const vector<pair<std::string, float*>> _params{
+		{ "min_mod", &min_mod },
+		{ "max_mod", &max_mod },
+		{ "base", &base },
+	};
+#pragma endregion params and param map
+
+	// don't allow this to be a modifiable param
+	const int window = 6;
+
+	CalcWindow<float> _u;
+	CalcWindow<float> _wot;
+
+	float pmod = neutral;
+
+#pragma region generic functions
+
+	inline void full_reset()
+	{
+		_u.zero();
+		_wot.zero();
+		pmod = neutral;
+	}
+
+	inline void setup(vector<float> doot[], const int& size)
+	{
+		doot[_pmod].resize(size);
+	}
+
+#pragma endregion
+
+	inline void advance_sequencing(const CalcWindow<float>& _mw_cc_ms_any)
+	{
+		// most recent value
+		float a = _mw_cc_ms_any.get_now();
+
+		// previous value
+		float b = _mw_cc_ms_any.get_last();
+
+		if (a == 0.F || b == 0.F || a == b) {
+			_u(1.F);
+			_wot(_u.get_mean_of_window(window));
+			return;
+		}
+
+		float prop = div_high_by_low(a, b);
+		int mop = static_cast<int>(prop);
+		float flop = prop - static_cast<float>(mop);
+
+		if (flop == 0.F) {
+			flop = 1.F;
+		} else if (flop >= 0.5F) {
+			flop = abs(flop - 1.F) + 1.F;
+
+		} else if (flop < 0.5F) {
+			flop += 1.F;
+		}
+
+		_u(flop);
+		_wot(_u.get_mean_of_window(window));
+	}
+
+	inline auto operator()(const int& total_taps) -> float
+	{
+
+		if (total_taps == 0) {
+			return 1.f;
+		}
+
+		pmod = base + _wot.get_mean_of_window(max_moving_window_size);
+		pmod = CalcClamp(pmod, min_mod, max_mod);
+		return pmod;
+	}
+};