Difference between revisions of "CULL"

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* {{note|2}} {{GTAF|106678|GTA VC cullzones deciphered}}
 
* {{note|2}} {{GTAF|106678|GTA VC cullzones deciphered}}
 
* {{note|3}} [[wikipedia:Two%27s_complement|Two's complement]]
 
* {{note|3}} [[wikipedia:Two%27s_complement|Two's complement]]
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* {{note|4}} {{GTAF|post|202532|3875562|SA Mirrors}}
  
 
== See also ==
 
== See also ==

Revision as of 13:39, 29 May 2010

CULL (IPL section)
Short description:Create a culling zone
Supported games:GTA 3 GTA VC GTA SA GTA IV
IPL Sections:
2DFX AUZO BLOK CARS CULL ENEX GRGE
INST JUMP LINK LODM MLO+ MULT OCCL
PATH PICK RTFX SLOW TCYC VNOD ZONE

CULL is a section in the IPL file. It is used to create zones with different behaviour like mirrors [1] or fixed camera positions. It can also influence the environment like disable rain within the zone and certain police behaviors.

GTA III / Vice City

Cull zones in GTA III and Vice City are built by a box which is controlled by various flags[2]. By default, most of the cull zones are located in data\maps\cull.ipl for both games.

CenterX, CenterY, CenterZ, LowerLeftX, LowerLeftY, LowerLeftZ, UpperRightX, UpperRightY, UpperRightZ, Flags, Unknown
Identifier Description
CenterX, CenterY, CenterZ
A point which defines the center of the box in real world coordinates
Useless? Doesn't seem to affect the zone.
LowerLeftX, LowerLeftY, LowerLeftZ
A point which corresponds to the lower left corner of the box.
UpperRightX, UpperRightY, UpperRightZ
A point which corresponds to the upper right corner of the box.
Flags
The behaviour of the cull zone – see below.
Unknown
Always 0

The first three parameters are odd since placing any values do not have an effect on the zone. They seem to act like identifiers rather than functions.

Flags

Flags are numbers which are build out of a collection of numbers formed by the power of 2-numbers lower than 230. Some are defining various behaviours of the zone. They can be combined by simply adding one flag value to another (see binary to decimal conversion).

Flag Binary Description
-1
1111 1111 1111 1111 [3]
Enables all flags.
1
0000 0000 0000 0001
Camera close in into player using closest third-person view camera mode, does not close in if in first person or cinematic mode, camera mode cannot be changed while in the zone
2
0000 0000 0000 0010
camera remotely placed outside the zone, no control of camera, camera mode cannot be changed while in the zone
4
0000 0000 0000 0100
Lowers the camera angle on boats
8
0000 0000 0000 1000
Rain-free, police helicopter-free zone
16
0000 0000 0001 0000
Police will not exit their vehicles voluntarily. They will only exit if you do something to them (like shoot it). Cops both on foot and in vehicles will not chase you but can shoot at you.
32
0000 0000 0010 0000
64
0000 0000 0100 0000
128
0000 0000 1000 0000
256
0000 0001 0000 0000
Police will always exit their vehicles once they are spawned ONLY IF you have a wanted level. If you don't, they'll drive normally.
512
0000 0001 0000 0000
1024
0000 0010 0000 0000
Some visual water effects are removed like the transparent waves and sparkles on the water (like the water in GTA III).

This section is incomplete. You can help by fixing and expanding it.

San Andreas

San Andreas has two different major formats in the game:

CenterX, CenterY, CenterZ, Unknown1, Width, Bottom, Length, Unknown2, Top, Flag, Unknown3
CenterX, CenterY, CenterZ, Unknown1, Width, Bottom, Length, Unknown2, Top, Flag, Vx, Vy, Vz, Cm

Coordinates are always rounded to the nearest world unit so that they are no longer floating point values, they are non-decimal integers.

Value Description
CenterX, CenterY, CenterZ
Vector to the center of the cull zone.
Unknown1, Unknown2, Unknown3
Allways 0. (The third value appears to be an placeholder. If it is zero the parser stops here. If it is not zero the parser tries to parse mirror information)
Width
Dimensions of the zone along x-axis.
Length
Dimensions of the zone along y-axis.
Top, Bottom
Distance from the center to the top/bottom of the zone. The sum of both values represents the zone's height.
Flag
Flags - see below!
Vx, Vy, Vz, Cm
Mirror parameters [4].

This section is incomplete. You can help by fixing and expanding it.

Flags

Not all flags from the previous game are compatible with San Andreas.

Flag Binary Description
-1
1111 1111 1111 1111 [3]
Enables all flags.
1
0000 0000 0000 0001
Camera close in into player using closest third-person view camera mode, does not close in if in first person or cinematic mode, camera mode cannot be changed while in the zone
2
0000 0000 0000 0010
camera remotely placed outside the zone, no control of camera, camera mode cannot be changed while in the zone
4
0000 0000 0000 0100
Unknown
8
0000 0000 0000 1000
Rain-free, police helicopter-free zone
4096
0001 0000 0000 0000
5-star military zone

This section is incomplete. You can help by fixing and expanding it.

GTA IV

References

See also

External links