make all file/network-related structs packed

src/Map.hh

@@ -17,7 +17,7 @@ struct BattleParams {
     uint8_t unknown[14];
     uint32_t experience;
     uint32_t difficulty;
-};
+} __attribute__((packed));
 
 struct BattleParamTable {
   BattleParams entries[2][3][4][0x60]; // online/offline, episode, difficulty, monster type
@@ -28,13 +28,13 @@ struct BattleParamTable {
       uint8_t monster_type) const;
   const BattleParams* get_subtable(bool solo, uint8_t episode,
       uint8_t difficulty) const;
-};
+} __attribute__((packed));
 
 
 
 struct BattleParamIndex {
   BattleParamTable table_for_episode[3];
-};
+} __attribute__((packed));
 
 // an enemy entry as loaded by the game
 struct PSOEnemy {
@@ -46,7 +46,7 @@ struct PSOEnemy {
 
   PSOEnemy();
   PSOEnemy(uint32_t experience, uint32_t rt_index);
-};
+} __attribute__((packed));
 
 std::vector<PSOEnemy> load_map(const char* filename, uint8_t episode,
     uint8_t difficulty, const BattleParams* bp, bool alt_enemies);