quicktune.h

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// Luanti
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
/*
        Used for tuning constants when developing.
 
        Eg. if you have this constant somewhere that you just can't get right
        by changing it and recompiling all over again:
                v3f wield_position = v3f(55, -35, 65);
 
        Make it look like this:
                v3f wield_position = v3f(55, -35, 65);
                QUICKTUNE_AUTONAME(QVT_FLOAT, wield_position.X, 0, 100);
                QUICKTUNE_AUTONAME(QVT_FLOAT, wield_position.Y, -80, 20);
                QUICKTUNE_AUTONAME(QVT_FLOAT, wield_position.Z, 0, 100);
 
        Then you can modify the values at runtime, using the keys
                keymap_quicktune_prev
                keymap_quicktune_next
                keymap_quicktune_dec
                keymap_quicktune_inc
 
        Once you have modified the values at runtime and then quit, the game
        will print out all the modified values at the end:
                Modified quicktune values:
                wield_position.X = 60
                wield_position.Y = -30
                wield_position.Z = 65
 
        The QUICKTUNE macros shouldn't generally be left in committed code.
*/
 
#pragma once
 
#include <string>
#include <vector>
 
enum QuicktuneValueType {
        QVT_NONE,
        QVT_FLOAT,
        QVT_INT
};
struct QuicktuneValue
{
        QuicktuneValueType type = QVT_NONE;
        union {
                struct {
                        float current, min, max;
                } value_QVT_FLOAT;
                struct {
                        int current, min, max;
                } value_QVT_INT;
        };
        bool modified = false;
 
        QuicktuneValue() = default;
 
        std::string getString();
        void relativeAdd(float amount);
};
 
const std::vector<std::string> &getQuicktuneNames();
QuicktuneValue getQuicktuneValue(const std::string &name);
void setQuicktuneValue(const std::string &name, const QuicktuneValue &val);
 
void updateQuicktuneValue(const std::string &name, QuicktuneValue &val);
 
#define QUICKTUNE(type_, var, min_, max_, name) do { \
        QuicktuneValue qv; \
        qv.type = type_; \
        qv.value_##type_.current = var; \
        qv.value_##type_.min = min_; \
        qv.value_##type_.max = max_; \
        updateQuicktuneValue(name, qv); \
        var = qv.value_##type_.current; \
        } while (0)
 
#define QUICKTUNE_AUTONAME(type_, var, min_, max_)\
        QUICKTUNE(type_, var, min_, max_, #var)