Sector

A sector is an enclosed area made up of lines in the map. Sectors are referenced by the sidedefs linked to the enclosing linedefs. Sectors must be closed areas, as in all sidedefs that reference them must make up one or more closed shapes. Note that having unclosed sectors is possible, and can be used for a few special effects, but can cause unpredictable results, including crashes, if used incorrectly.

A sector does not need to enclose only one area of the map. To avoid redundancy, two separate areas of the map can be defined by one sector, thus copying all the properties of one area to the other. However, the engine treats these separate shapes as the same sector. For instance, sounds entering one area of the sector will be heard by enemies in the other. This can be used intentionally to allow sounds generated in one area of the map to alert enemies in another, unconnected area. If two doors are the same sector, using Door_Raise on either door will cause both to open.

Specification

Bytes	Data type	Description	Notes
0-1	LE 16-bit signed	Floor height
2-3	LE 16-bit signed	Ceiling height
4-11	8-bit array	Floor texture
12-19	8-bit array	Ceiling texture
20-21	LE 16-bit signed	Light level	Vanilla Doom rounded the light level to the nearest multiple of 8, ZDoom shows unique light levels for all values
22-23	LE 16-bit unsigned	Sector special
24-25	LE 16-bit unsigned	Sector tag	For use with Action specials that refer to a sector by its tag

UDMF properties

The Universal Doom Map Format allows to set a number of properties on sectors. Unless otherwise specified, default values for integers and floats is 0, and false for booleans. They include:

Name	Type	Description
`xpanningfloor`	float	X texture offset of floor texture, Default = 0.0.
`ypanningfloor`	float	Y texture offset of floor texture, Default = 0.0.
`xpanningceiling`	float	X texture offset of ceiling texture, Default = 0.0.
`ypanningceiling`	float	Y texture offset of ceiling texture, Default = 0.0.
`xscalefloor`	float	X texture scale of floor texture, Default = 1.0.
`yscalefloor`	float	Y texture scale of floor texture, Default = 1.0.
`xscaleceiling`	float	X texture scale of ceiling texture, Default = 1.0.
`yscaleceiling`	float	Y texture scale of ceiling texture, Default = 1.0.
`rotationfloor`	float	Rotation of floor texture in degrees, Default = 0.0.
`rotationceiling`	float	Rotation of ceiling texture in degrees, Default = 0.0.
`ceilingplane_a`	float	Define the plane equation for the sector's ceiling. Default is a horizontal plane at 'heightceiling'. 'heightceiling' will still be used to calculate texture alignment. The plane equation will only be used if all 4 values are given.
`ceilingplane_b`	float
`ceilingplane_c`	float
`ceilingplane_d`	float
`floorplane_a`	float	Define the plane equation for the sector's floor. Default is a horizontal plane at 'heightfloor'. 'heightfloor' will still be used to calculate texture alignment. The plane equation will only be used if all 4 values are given.
`floorplane_b`	float
`floorplane_c`	float
`floorplane_d`	float
`lightfloor`	integer	The floor's light level. Default is 0.
`lightceiling`	integer	The ceiling's light level. Default is 0.
`lightfloorabsolute`	bool	true = 'lightfloor' is an absolute value. Default is relative to the owning sector's light level.
`lightceilingabsolute`	bool	true = 'lightceiling' is an absolute value. Default is relative to the owning sector's light level.
`alphafloor`	float	translucency of floor plane (only has meaning with Sector_SetPortal) Default is 1.0.
`alphaceiling`	float	translucency of ceiling plane (only has meaning with Sector_SetPortal) Default is 1.0.
`renderstylefloor`	string	floor plane renderstyle (only has meaning with Sector_SetPortal), can be "translucent" or "add", default is "translucent". (OpenGL only: not supported by ZDoom)
`renderstyleceiling`	string	ceiling plane renderstyle (only has meaning with Sector_SetPortal), can be "translucent" or "add", default is "translucent". (OpenGL only: not supported by ZDoom)
`gravity`	float	Sector's gravity. Default is 1.0.
`lightcolor`	integer	Sector's light color as RRGGBB value, default = 0xffffff. Removes the need for ColorSetter thing.
`fadecolor`	integer	Sector's fog color as RRGGBB value, default = 0x000000. Removes the need for FadeSetter thing.
`desaturation`	float	Color desaturation factor. 0 = none, 1 = full, default = 0. Removes the need for ColorSetter thing.
`silent`	bool	Actors in this sector make no sound,
`nofallingdamage`	bool	Falling damage is disabled in this sector
`dropactors`	bool	Actors drop with instantly moving floors
`norespawn`	bool	Players cannot respawn in this sector
`soundsequence`	string	The sound sequence to play when this sector moves. Placing a sound sequence thing in the sector will override this property.
`hidden`	bool	if true this sector will not be drawn on the textured automap.
`waterzone`	bool	Sector is under water and swimmable. Removes the need for using WaterZone things.
`moreids`	string	Additional sector tags, specified as a space-separated list of numbers, e.g., `"2 666 1003 4505"`.
`damageamount`	integer	Amount of damage inflicted by this sector. Default = 0. If this is 0, all other damage properties will be ignored. Setting damage through these properties will override any damage set through sector specials. Setting this to a negative value will create a healing sector.
`damagetype`	string	Damage type for sector damage, Default = "None" (generic damage).
`damageinterval`	integer	Interval in tics between damage application. Default = 32.
`leakiness`	integer	Probability of leaking through radiation suit (0 = never, 256 = always). Default = 0.
`damageterraineffect`	bool	If true, a terrain splash is spawned at the end of each damage interval. Default = false.
`damagehazard`	bool	If true, the damage model is changed to Strife's delayed damage for the given sector. Default = false.
`floorterrain`	string	Sets the terrain for the sector's floor. Default is to use the flat texture's terrain definition.
`ceilingterrain`	string	Sets the terrain for the sector's ceiling. Default is to use the flat texture's terrain definition.
`portal_ceil_alpha`	float	Translucency of ceiling portal. The default value of 0 means "not visible".
`portal_ceil_blocksound`	bool	Ceiling portal blocks sound.
`portal_ceil_disabled`	bool	Ceiling portal is disabled.
`portal_ceil_nopass`	bool	Ceiling portal blocks movement if set to `true`.
`portal_ceil_norender`	bool	Ceiling portal is not rendered.
`portal_ceil_overlaytype`	string	Defines translucency style. It can either be `"translucent"` (default) or `"additive"`.
`portal_floor_alpha`	float	Translucency of floor portal. The default value of 0 means "not visible".
`portal_floor_blocksound`	bool	Floor portal blocks sound.
`portal_floor_disabled`	bool	Floor portal is disabled.
`portal_floor_nopass`	bool	Floor portal blocks movement if set to `true`.
`portal_floor_norender`	bool	Floor portal is not rendered.
`portal_floor_overlaytype`	string	Defines translucency style. It can either be `"translucent"` (default) or `"additive"`.
`noattack`	bool	If `true`, monsters in the sector do not attack.

This article is issued from Zdoom. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.