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more save file format refinement

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This commit is contained in:
Martin Michelsen
2023-04-03 00:27:21 -07:00
parent c4e3eb238f
commit 35845ea49b
2 changed files with 84 additions and 46 deletions
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src/Episode3/DataIndex.hh
+24 -21
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@@ -582,23 +582,26 @@ struct DeckDefinition {
} __attribute__((packed)); // 0x84 bytes in total
struct PlayerConfig {
// The first offsets in the comments in this struct are relative to the start
// of the 61/98 command; the second are relative to the start of the
// Ep3PlayerDataSegment structure in the reverse-engineering project; the
// third are relative to the start of this struct.
// TODO: Fill in the unknown fields here by looking around callsites of
// get_player_data_segment
/* 0728:----:0000 */ parray<uint8_t, 0x154> unknown_a1;
/* 087C:0000:0154 */ uint8_t is_encrypted;
/* 087D:0001:0155 */ uint8_t basis;
/* 087E:0002:0156 */ parray<uint8_t, 2> unused;
/* 0000 */ ptext<char, 12> rank_text; // From B7 command
/* 000C */ parray<uint8_t, 0x1C> unknown_a1;
/* 0028 */ parray<be_uint16_t, 20> tech_menu_shortcut_entries;
/* 0050 */ parray<be_uint32_t, 10> choice_search_config;
/* 0078 */ parray<be_uint32_t, 0x30> scenario_progress;
/* 0138 */ be_uint16_t unknown_a2;
/* 013A */ be_uint16_t unknown_a3;
/* 013C */ parray<uint8_t, 0x18> unknown_a4;
/* 0154 */ uint8_t is_encrypted;
/* 0155 */ uint8_t basis;
/* 0156 */ parray<uint8_t, 2> unused;
// The following fields (here through the beginning of decks) are encrypted
// using the trivial algorithm, with the basis specified above, if
// is_encrypted is equal to 1.
// It appears the card counts field in this structure is actually 1000 (0x3E8)
// bytes long, even though in every other place the counts array appears it's
// 0x2F0 bytes long. They presumably did this because of the checksum logic.
/* 0880:0004:0158 */ parray<uint8_t, 1000> card_counts;
/* 0158 */ parray<uint8_t, 1000> card_counts;
// These appear to be an attempt at checksumming the card counts array, but
// the algorithm don't cover the entire array and instead reads from later
// parts of this structure. This appears to be due to a copy/paste error in
@@ -607,26 +610,26 @@ struct PlayerConfig {
// [69] and puts the result in card_count_checksums[1], etc. Presumably they
// intended to use 20 as the stride instead of 50, which would have exactly
// covered the entire card_counts array.
/* 0C68:03EC:0540 */ parray<be_uint16_t, 50> card_count_checksums;
/* 0540 */ parray<be_uint16_t, 50> card_count_checksums;
// Yes, these are actually 64-bit integers. They include card IDs and some
// other data, encoded in a way I don't fully understand yet.
/* 0CCC:0450:05A4 */ parray<be_uint64_t, 0x1C2> unknown_a4;
/* 1ADC:1260:13B4 */ parray<uint8_t, 0x80> unknown_a7;
/* 1B5C:12E0:1434 */ parray<DeckDefinition, 25> decks;
/* 2840:1FC4:2118 */ parray<uint8_t, 0x08> unknown_a8;
/* 2848:1FCC:2120 */ be_uint32_t offline_clv_exp; // CLvOff = this / 100
/* 284C:1FD0:2124 */ be_uint32_t online_clv_exp; // CLvOn = this / 100
/* 05A4 */ parray<be_uint64_t, 0x1C2> unknown_a5;
/* 13B4 */ parray<uint8_t, 0x80> unknown_a7;
/* 1434 */ parray<DeckDefinition, 25> decks;
/* 2118 */ parray<uint8_t, 0x08> unknown_a8;
/* 2120 */ be_uint32_t offline_clv_exp; // CLvOff = this / 100
/* 2124 */ be_uint32_t online_clv_exp; // CLvOn = this / 100
struct PlayerReference {
/* 00 */ be_uint32_t guild_card_number;
/* 04 */ ptext<char, 0x18> player_name;
} __attribute__((packed));
// TODO: What do these player references mean? When are entries added to or
// removed from this list?
/* 2850:1FD4:2128 */ parray<PlayerReference, 9> unknown_a9;
/* 294C:20D0:2224 */ parray<uint8_t, 0x50> unknown_a10;
/* 299C:2120:2274 */ ptext<char, 0x10> name;
/* 29AC:2130:2284 */ parray<uint8_t, 0xCC> unknown_a11;
/* 2A78:21FC:2350 */
/* 2128 */ parray<PlayerReference, 9> unknown_a9;
/* 2224 */ parray<uint8_t, 0x50> unknown_a10;
/* 2274 */ ptext<char, 0x10> name;
/* 2284 */ parray<uint8_t, 0xCC> unknown_a11;
/* 2350 */
void decrypt();
void encrypt(uint8_t basis);