RPKGs (Resource Packages) are the archive format Glacier 2 Engine games use.
Hitman 3 introduced a new kind of resource package file (RPK2), It is structurally similar to RPKG and the game is backward compatible with the previous format.
HITMAN WOA
Base archive structure
| Type | Size | Description | * |
|---|
| string | 32 | File magic, GKPR or 2KPR | |
| unsigned int | 32 | unknown (always seems to be 0x1) | not in GKPR |
| unsigned int | 8 | chunk number | not in GKPR |
| unsigned int | 8 | chunk type (0x00 standard, 0x01 addon) | not in GKPR |
| unsigned int | 8 | chunk patch number | not in GKPR |
| ? | 8 | unknown (always seems to be 0x78) | not in GKPR |
| ? | 8 | unknown (always seems to be 0x78) | not in GKPR |
| unsigned int | 32 | resource count | |
| unsigned int | 32 | resource data table size | |
| unsigned int | 32 | patch deletion entry count | only in patch file |
patch entries (if patch deletion entry count > 0):
| Type | Size | Description |
|---|
| unsigned int | 64 | resource hash value (RuntimeResourceID) |
resource data table, per entry:
| Type | Size | Description |
|---|
| unsigned int | 64 | resource hash value (RuntimeResourceID) |
| unsigned int | 64 | resource data offset |
| unsigned int | 32 | resource (compressed) data size (and XOR scrambled flag) |
resource metadata table, per entry:
| Type | Size | Description |
|---|
| unsigned char[] | 32 | type extension |
| unsigned int | 32 | resource references table size |
| unsigned int | 32 | resource states table size (unused) |
| unsigned int | 32 | resource (uncompressed) size final |
| unsigned int | 32 | resource size requirement inside memory |
| unsigned int | 32 | resource size requirement inside video memory |
if the resource references table size is > 0 and there are hash references
| Type | Size | Description |
|---|
| unsigned int | 32 | resource reference count |
reference flags, per entry:
| Type | Size | Description |
|---|
| byte | 5 | language code |
| bool | 1 | is acquired resource |
| byte | 2 | reference type (0x0 Install, 0x1 Normal or 0x2 Weak) |
reference RuntimeResourceIDs, per entry:
| Type | Size | Description |
|---|
| unsigned int | 64 | reference's RuntimeResourceID |