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FindPreviousChunk matching

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Dethrace Labs 2025-11-30 14:05:30 +13:00 committed by Dethrace Engineering Department
parent 032164e7bb
commit 850845757e
1 changed files with 16 additions and 13 deletions
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29
src/DETHRACE/common/piping.c
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@ -1758,27 +1758,30 @@ tPipe_chunk* FindPreviousChunk(tU8* pPtr, tPipe_chunk_type pType, tChunk_subject
ptr = pPtr;
chunk_counter = 0;
masked_index = pIndex & 0x0fff;
while (1) {
if (!MoveSessionPointerBackOne(&ptr)) {
reached_end = chunk_counter >= gMax_rewind_chunks;
chunk_counter++;
} else {
do {
if (MoveSessionPointerBackOne(&ptr) != 0 || gMax_rewind_chunks <= chunk_counter++) {
reached_end = 1;
} else {
reached_end = 0;
}
if (!reached_end) {
gEnd_of_session = ptr + LengthOfSession((tPipe_session*)ptr) - sizeof(tU16);
mr_chunky = &((tPipe_session*)ptr)->chunks;
for (i = 0; i < ((tPipe_session*)ptr)->number_of_chunks && ((tPipe_session*)ptr)->chunk_type == pType; i++) {
if ((mr_chunky->subject_index & 0xfff) == masked_index) {
return mr_chunky;
for (i = 0; i < ((tPipe_session*)ptr)->number_of_chunks; i++) {
if (((tPipe_session*)ptr)->chunk_type == pType) {
if ((mr_chunky->subject_index & 0xfff) == masked_index) {
return mr_chunky;
} else {
AdvanceChunkPtr(&mr_chunky, pType);
}
} else {
break;
}
AdvanceChunkPtr(&mr_chunky, pType);
}
}
if (reached_end) {
return NULL;
}
}
} while (!reached_end);
return NULL;
}
// IDA: void __usercall UndoModelGeometry(tPipe_chunk **pChunk@<EAX>)