metaforce/Runtime/Character/TSegIdMap.hpp

#pragma once

#include <map>
#include <memory>
#include <utility>

#include "Runtime/Character/CSegId.hpp"

namespace urde {

template <class T>
class TSegIdMap {
  CSegId x0_boneCount = 0;
  CSegId x1_capacity = 0;
  u32 x4_maxCapacity = 100;
  std::pair<CSegId, CSegId> x8_indirectionMap[100];
  std::unique_ptr<T[]> xd0_bones;
  CSegId xd4_curPrevBone = 0;

public:
  TSegIdMap(const CSegId& capacity) : x1_capacity(capacity), xd0_bones(new T[capacity]) {}
  T& operator[](const CSegId& id) { return SetElement(id); }
  const T& operator[](const CSegId& id) const { return xd0_bones[x8_indirectionMap[id].second]; }
  T& SetElement(const CSegId& id, T&& obj) {
    size_t idx;
    if (x8_indirectionMap[id].first == 0xff) {
      x8_indirectionMap[id].first = xd4_curPrevBone;
      x8_indirectionMap[id].second = x0_boneCount;
      xd4_curPrevBone = id;
      idx = x0_boneCount;
      ++x0_boneCount;
    } else
      idx = x8_indirectionMap[id].second;
    xd0_bones[idx] = std::move(obj);
    return xd0_bones[idx];
  }
  T& SetElement(const CSegId& id) {
    size_t idx;
    if (x8_indirectionMap[id].first == 0xff) {
      x8_indirectionMap[id].first = xd4_curPrevBone;
      x8_indirectionMap[id].second = x0_boneCount;
      xd4_curPrevBone = id;
      idx = x0_boneCount;
      ++x0_boneCount;
    } else
      idx = x8_indirectionMap[id].second;
    return xd0_bones[idx];
  }
  void DelElement(const CSegId& id) {
    if (x8_indirectionMap[id].first != 0xff) {
      if (id == xd4_curPrevBone)
        xd4_curPrevBone = x8_indirectionMap[id].first;
      x8_indirectionMap[id].first = 0xff;
      x8_indirectionMap[id].second = 0xff;
      --x0_boneCount;
    }
  }
  bool HasElement(const CSegId& id) const { return x8_indirectionMap[id].first != 0xff; }

  u32 GetCapacity() const { return x1_capacity; }
};

} // namespace urde