Interior
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An interior is an area in the game that is not rendered as part of the "outside world". In GTA III, this is handled by the cullzone.dat file and is mainly used by road and subway tunnels. In Vice City, San Andreas, LCS, and VCS, objects in an interior are assigned a render level through the IPL file. In Vice City, the render level can only be changed through the script file. In San Andreas, it can additionally be changed through the IPL file. By default, the outside world has the render level "0", which doesn't act as an interior.
Interior 13 is a special interior that is reserved for pickups. Placing objects in that interior makes them stream regardless of the interior the player is in.
IPL
In the INST section in Vice City and San Andreas, the third column denotes the render level ("interior number") of the object. Objects can only be viewed within a level; objects on other levels will not load and cannot be viewed.
For San Andreas only, you can create an access points to interiors using the ENEX section of the IPL file.
Mission script
For Vice City, you have to use the script to create an access to interiors. San Andreas can also use the script to create an access to interiors.
| 04BB |   |
sets the visibility of the interior |
| 04F9 | |
sets the interior sky colors |
| 04FA | |
resets the interior sky colors to default |
| 0566 | |
sets the visibility of an object to the interior |
| 077E | |
gets the active interior number |
| 07B0 | |
gets the active interior name |
| 07FB | |
toggles the interior markers to show |
| 0840 | |
sets the visibility of a vehicle to the interior |
| 0860 | |
sets the visibility of a character to the interior |
| 0864 | |
toggles the interior markers at that point to show |
| 08AD | |
places a pedestrian into an interior without linking it to an interior |
| 08DC | |
creates an ornamental interior marker |
| 094B | |
gets a pedestrian's entry exit interior name |
| 098E | |
set interior entry exit flag |
| 09E8 | |
gets a pedestrian's current interior number |
List of areas
This is a list of interior numbers and their corresponding areas used in the games.
Vice City
Not all interiors behave the same way and most of the behaviors are hardcoded. Most interiors disable environmental ambient noise in order to play ambient music, which also disables in-car radio stations. Some disable ambient vehicle noise, which includes engine, door, and tire noises. Most interiors remove visible ocean water.
| Number | Enum | Areas | Plays[1] | Notes |
|---|---|---|---|---|
| 0 | VIS_MAIN_MAP | The main world | ||
| 1 | VIS_HOTEL | Ocean View Hotel | Hotel.mp3 | Draws ocean water. |
| 2 | VIS_MANSION | Diaz's Mansion/Vercetti Estate | ambsil.mp3 | Draws ocean water. |
| 3 | VIS_BANK | El Banco Corrupto Grande | ambsil.mp3 | |
| 4 | VIS_MALL | North Point Mall | MallAmb.mp3 | Allows some ambient vehicle noise. Allows peds to group up like gang members. |
| 5 | VIS_STRIP_CLUB | Pole Position Club | Strip.mp3 | |
| 6 | VIS_LAWYERS | Ken Rosenburg's office | ambsil.mp3 | |
| 7 | VIS_COFFEE_SHOP | Cafe Robina | ambsil.mp3 | |
| 8 | VIS_CONCERT_HALL | Love Fist concert hall | ambsil.mp3 | |
| 9 | VIS_STUDIO | Love Fist recording studio | ambsil.mp3 | |
| 10 | VIS_RIFLE_RANGE | Shooting Range | ambsil.mp3 | |
| 11 | VIS_BIKER_BAR | Apartment 3C, Greasy Choppers | ambsil.mp3 | |
| 12 | VIS_POLICE_STATION | VCPD HQ, Auntie Poulet's | ambsil.mp3 | |
| 13 | VIS_EVERYWHERE | reserved | Retains all ambient noise. If an object is assigned this number, it can be visible in any interior. | |
| 14 | VIS_DIRT | Dirt Ring | DirtRing.mp3 | Allows all ambient vehicle noise. |
| 15 | VIS_BLOOD | Bloodring | DirtRing.mp3 | Allows all ambient vehicle noise. |
| 16 | VIS_OVALRING | Hotring | DirtRing.mp3 | Allows all ambient vehicle noise. |
| 17 | VIS_MALIBU_CLUB | The Malibu Club | Malibu.mp3 | |
| 18 | VIS_PRINT_WORKS | Print Works | ambsil.mp3 | |
- ^ Array in memory for VC v1.0 starts at 0x6CDAE4.
San Andreas
| Number | Name | Description |
|---|---|---|
| 1 | ABATOIR | Sindacco Abattoir |
| 1 | AMMUN1 | Ammu-Nation |
| 1 | CARMOD1 | TransFender |
| 1 | FDREST1 | World of Coq |
| 1 | GF1 | Denise's |
| 1 | JETINT | Shamal interior |
| 1 | LACS1 | Sub Urban |
| 1 | LAHS1B | House |
| 1 | MAFCAS | Caligulas Casino |
| 1 | MAFCAS2 | Penthouse Suites |
| 1 | - | Saint Mark's |
| 1 | SMASHTV | Warehouse |
| 1 | - | Stadium with wooden sandbox |
| 1 | SVVGHO1 | Hotel Suite |
| 1 | SWEETS | Sweet's House |
| 1 | - | Trailer |
| 1 | TSDINER | Truck Stop |
| 1 | WUZIBET | Wu Zi Mu's |
| 2 | BARBERS | Barber |
| 2 | BDUPS1 | B Dup's Crack Palace |
| 2 | CARMOD2 | Loco Low Co. |
| 2 | CARTER | Smoke's Crack Palace |
| 2 | GF2 | Katie's |
| 2 | LAHS1A | House |
| 2 | LASTRIP | Strip Club |
| 2 | RYDERS | Ryder's Place |
| 2 | SVVGHO2 | Hotel Suite |
| 2 | VGHSB1 | House |
| 2 | VGHSB3 | House |
| 2 | - | Salvatore's Caligula room |
| 3 | BARBER2 | Barber |
| 3 | BDUPS | B Dup's apartment |
| 3 | BIKESCH | Bike School |
| 3 | BROTHL1 | Whore House |
| 3 | CARLS | The Johnson House |
| 3 | CARMOD3 | Wheel Arch Angels |
| 3 | CHANGER | Wardrobe |
| 3 | CSSPRT | Pro-Laps |
| 3 | DRIVES | Driving School |
| 3 | DRIVES2 | Driving School |
| 3 | GENOTB | Inside Track Betting |
| 3 | GF3 | Helena's |
| 3 | LAHSB4 | House |
| 3 | OGLOCS | OG Loc's |
| 3 | PAPER | Planning Department |
| 3 | PDOMES | The Pleasure Domes |
| 3 | PDOMES2 | The Pleasure Domes |
| 3 | POLICE3 | LVPD HQ |
| 3 | SEXSHOP | Sex Shop |
| 3 | S1TEST | Middle of nowhere |
| 3 | STRIP2 | Strip Club |
| 3 | STUDIO | Blastin' Fools Records studio |
| 3 | TATTO3 | Tattoo Parlor |
| 4 | AMMUN2 | Ammu-Nation |
| 4 | DINER1 | Diner |
| 4 | DIRBIKE | Dirt Stadium |
| 4 | GF4 | Michelle's |
| 4 | LAHS2A | House |
| 4 | LAHSS6 | House |
| 4 | SFHSM2 | House |
| 4 | X711S2 | 24-7 |
| 5 | CSDESGN | Victim |
| 5 | DINER2 | Diner |
| 5 | FDPIZA | Pizza Stack |
| 5 | GANG | Vagos Gang House |
| 5 | GF5 | Barbara's |
| 5 | GYM1 | Ganton Gym |
| 5 | LACRAK | Crack Den |
| 5 | LAHSB3 | House |
| 5 | MADDOGS | Madd Dogg's Crib |
| 5 | MDDOGS | Madd Dogg's Crib |
| 5 | SFHSB1 | House |
| 5 | SVHOT1 | Hotel Suite |
| 5 | VGHSM2 | House |
| 6 | AMMUN3 | Ammu-Nation |
| 6 | AMMUN5 | Ammu-Nation |
| 6 | BROTHEL | Whore House |
| 6 | GF6 | Millie's |
| 6 | GYM2 | Cobra Marital Arts |
| 6 | LAHSB1 | House |
| 6 | POLICE1 | LSPD HQ |
| 6 | RCPLAY | Zero's RC Shop |
| 6 | REST2 | Secret Valley |
| 6 | SFHSB2 | House |
| 6 | SFHSS2 | House |
| 6 | SVCUNT | Safe House |
| 6 | SVSFBG | Safe House |
| 6 | SVSFSM | Safe House |
| 6 | X7_11S | 24-7 |
| 7 | 8TRACK | 8-Track Stadium |
| 7 | AMMUN4 | Ammu-Nation |
| 7 | GYM3 | Below the Belt Gym |
| 7 | LAHSB2 | House |
| 7 | OFTEST | Middle of nowhere |
| 8 | BURHOUS | Colonel Fuhrberger's |
| 8 | SFHSS1 | House |
| 8 | SVLAMD | Safe House |
| 9 | - | Andromada cargo hold |
| 9 | FDCHICK | Cluckin' Bell |
| 9 | LAHS2B | House |
| 9 | SFHSB3 | House |
| 9 | SVGNMT2 | Motel room |
| 9 | SVVGMD | Safe House |
| 10 | DESHOUS | Abandoned AC tower |
| 10 | FDBURG | Burger Shot |
| 10 | POLICE2 | SFPD HQ |
| 10 | SVGNMT1 | Motel room |
| 10 | TRICAS | The Four Dragon's |
| 10 | - | The Four Dragon's Casino's maintenance room |
| 10 | SVSFMD | Safe House |
| 10 | VGHSM3 | House |
| 10 | X711S3 | 24-7 |
| 10 | - | Zero's No Man's Land |
| 11 | BAR2 | Bar |
| 11 | SVLASM | Safe House |
| 12 | BARBER3 | Barber |
| 12 | CASINO2 | Casino Floor |
| 12 | MOROOM | Motel room |
| 12 | SVLABIG | Safe House |
| 14 | CSEXL | Didier Sachs |
| 14 | AIRPOR2 | Los Santos International Airport |
| 14 | AIRPORT | Francis Intl. Airport |
| 15 | CSCHP | Binco |
| 15 | MOTEL1 | Jefferson Motel |
| 15 | SFHSM1 | House |
| 15 | VGHSS1 | House |
| 15 | VGSHM2 | House |
| 15 | VGSHM3 | House |
| 15 | VGSHS2 | House |
| 16 | - | Stadium with giant round circular raised platform in middle |
| 16 | TATTOO | Tattoo Parlor |
| 16 | X7_11C | 24-7 |
| 17 | BAR1 | Bar |
| 17 | DAMIN | Generator Hall |
| 17 | FDDONUT | Rusty Brown's |
| 17 | TATTO2 | Tattoo Parlor |
| 17 | X7_11D | 24-7 |
| 18 | ATRIUME | Atrium |
| 18 | ATRIUMX | Attrium |
| 18 | CLOTHGP | Zip |
| 18 | GENWRHS | Warehouse |
| 18 | UFOBAR | Lil' Probe Inn |
| 18 | X7_11B | 24-7 |
