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feat(maps): resolve visible tiles without span indexes

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This commit is contained in:
Torlando
2026-08-20 04:53:00 +00:00
parent f9e23a5825
commit d9cb64a1ea
10 changed files with 384 additions and 21 deletions
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lib/tdeck_ui/Hardware/TDeck/ActiveMapSetCodec.cpp
+9 -1
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@@ -66,12 +66,15 @@ bool ActiveMapSetCodec::decode(const std::uint8_t* input, std::size_t length,
ActiveMapSetView& output) {
static const std::uint8_t magic[4] = {'P', 'M', 'A', 'S'};
if (input == NULL || length < 16U || length > MAX_SERIALIZED_SIZE ||
std::memcmp(input, magic, sizeof(magic)) != 0 || input[4] != 2U || input[5] != 0U ||
std::memcmp(input, magic, sizeof(magic)) != 0 ||
(input[4] != SPAN_FORMAT_VERSION && input[4] != INDEXLESS_FORMAT_VERSION) ||
input[5] != 0U ||
readU16(input + 6U) != length || readU32(input + length - 4U) != crc32(input, length - 4U)) {
return false;
}
ActiveMapSetView candidate = {};
candidate.format_version = input[4];
candidate.generation = readU32(input + 8U);
if (candidate.generation == 0U) return false;
const std::size_t end = length - 4U;
@@ -90,6 +93,11 @@ bool ActiveMapSetCodec::decode(const std::uint8_t* input, std::size_t length,
for (std::uint8_t previous = 0U; previous < pack_index; ++previous) {
if (std::strcmp(pack.pack_id, candidate.packs[previous].pack_id) == 0) return false;
}
if (candidate.format_version == INDEXLESS_FORMAT_VERSION) {
pack.span_count = 0U;
pack.span_bytes = NULL;
continue;
}
if (position > end || end - position < 2U) return false;
pack.span_count = readU16(input + position); position += 2U;
if (pack.span_count == 0U || pack.span_count > MAX_ROW_SPANS ||