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fix: weapon seed's low dword being sign extended (#1914)
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JavaScript's semantics here are incredibly stupid, but basically if the initial DWORD's high WORD's MSB is true, the number would become negative after the shift left by 16. Then when ORing it with the highDword, the initial DWORD would be sign-extended to a QWORD, meaning the high DWORD would become all 1s, basically cancelling out the entire OR operation.

Reviewed-on: #1914
Co-authored-by: Sainan <63328889+Sainan@users.noreply.github.com>
Co-committed-by: Sainan <63328889+Sainan@users.noreply.github.com>
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Sainan 2025-04-29 12:28:01 -07:00 committed by Sainan
parent 0af7f41201
commit 9468768947
1 changed files with 1 additions and 1 deletions
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src/services/serversideVendorsService.ts
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@ -286,7 +286,7 @@ const generateVendorManifest = (vendorInfo: IGeneratableVendorInfo): IVendorMani
item.LocTagRandSeed = (rng.randomInt(0, 0xffff) << 16) | rng.randomInt(0, 0xffff); item.LocTagRandSeed = (rng.randomInt(0, 0xffff) << 16) | rng.randomInt(0, 0xffff);
if (vendorInfo.RandomSeedType == "VRST_WEAPON") { if (vendorInfo.RandomSeedType == "VRST_WEAPON") {
const highDword = (rng.randomInt(0, 0xffff) << 16) | rng.randomInt(0, 0xffff); const highDword = (rng.randomInt(0, 0xffff) << 16) | rng.randomInt(0, 0xffff);
item.LocTagRandSeed = (BigInt(highDword) << 32n) | BigInt(item.LocTagRandSeed); item.LocTagRandSeed = (BigInt(highDword) << 32n) | (BigInt(item.LocTagRandSeed) & 0xffffffffn);
} }
} }
processed.ItemManifest.push(item); processed.ItemManifest.push(item);