move BattleParamsIndex to a separate file

src/BattleParamsIndex.hh

@@ -0,0 +1,60 @@
+#pragma once
+
+#include <inttypes.h>
+
+#include <memory>
+#include <phosg/Encoding.hh>
+#include <random>
+#include <string>
+#include <vector>
+
+#include "EnemyType.hh"
+#include "StaticGameData.hh"
+#include "Text.hh"
+
+class BattleParamsIndex {
+public:
+  struct Entry {
+    le_uint16_t atp; // attack power
+    le_uint16_t psv; // perseverance (intelligence?)
+    le_uint16_t evp; // evasion
+    le_uint16_t hp; // hit points
+    le_uint16_t dfp; // defense
+    le_uint16_t ata; // accuracy
+    le_uint16_t lck; // luck
+    le_uint16_t esp; // ???
+    parray<uint8_t, 0x0C> unknown_a1;
+    le_uint32_t experience;
+    le_uint32_t difficulty;
+
+    std::string str() const;
+  } __attribute__((packed));
+
+  struct Table {
+    parray<parray<Entry, 0x60>, 4> difficulty;
+
+    void print(FILE* stream) const;
+  } __attribute__((packed));
+
+  BattleParamsIndex(
+      std::shared_ptr<const std::string> data_on_ep1, // BattleParamEntry_on.dat
+      std::shared_ptr<const std::string> data_on_ep2, // BattleParamEntry_lab_on.dat
+      std::shared_ptr<const std::string> data_on_ep4, // BattleParamEntry_ep4_on.dat
+      std::shared_ptr<const std::string> data_off_ep1, // BattleParamEntry.dat
+      std::shared_ptr<const std::string> data_off_ep2, // BattleParamEntry_lab.dat
+      std::shared_ptr<const std::string> data_off_ep4); // BattleParamEntry_ep4.dat
+
+  const Entry& get(
+      bool solo, Episode episode, uint8_t difficulty, EnemyType type) const;
+  const Entry& get(
+      bool solo, Episode episode, uint8_t difficulty, size_t entry_index) const;
+
+private:
+  struct LoadedFile {
+    std::shared_ptr<const std::string> data;
+    const Table* table;
+  };
+
+  // online/offline, episode
+  LoadedFile files[2][3];
+};