anonymous_namespace{CCmpRangeManager.cpp} Namespace Reference

Classes
struct	EntityData
class	EntityDistanceOrdering
	Functor for sorting entities by distance from a source point. More...
struct	EntityParabolicRangeOutline
struct	Query
	Representation of a range query. More...

Enumerations
enum	FlagMasks {   None = 0x00 , Normal = 0x01 , Injured = 0x02 , AllQuery = Normal | Injured ,   InWorld = 0x08 , RetainInFog = 0x10 , RevealShore = 0x20 , ScriptedVisibility = 0x40 ,   SharedVision = 0x80 }
	Representation of an entity, with the data needed for queries. More...

Functions
u32	CalcOwnerMask (player_id_t owner)
	Convert an owner ID (-1 = unowned, 0 = gaia, 1..30 = players) into a 32-bit mask for quick set-membership tests. More...
u32	CalcPlayerLosMask (player_id_t player)
	Returns LOS mask for given player. More...
u32	CalcSharedLosMask (std::vector< player_id_t > players)
	Returns shared LOS mask for given list of players. More...
bool	SetPlayerSharedDirtyVisibilityBit (u16 &mask, player_id_t player, bool enable)
	Add/remove a player to/from mask, which is a 1-bit mask representing a list of players. More...
LosVisibility	GetPlayerVisibility (u32 visibilities, player_id_t player)
	Computes the 2-bit visibility for one player, given the total 32-bit visibilities. More...
bool	IsVisibilityDirty (u16 dirty, player_id_t player)
	Test whether the visibility is dirty for a given LoS region and a given player. More...
bool	HasVisionSharing (u16 visionSharing, player_id_t player)
	Test whether a player share this vision. More...
u16	CalcVisionSharingMask (player_id_t player)
	Computes the shared vision mask for the player. More...
static bool	InParabolicRange (CFixedVector3D v, fixed range)
	Checks whether v is in a parabolic range of (0,0,0) The highest point of the paraboloid is (0,range/2,0) and the circle of distance 'range' around (0,0,0) on height y=0 is part of the paraboloid This equates to computing f(x, z) = y = -(xx + zz)/(2*range) + range/2 > 0, or alternatively sqrt(xx+zz) <= sqrt(range^2 - 2range*y). More...

Variables
constexpr int	LOS_REGION_RATIO = 8
	How many LOS vertices to have per region. More...
const fixed	PARABOLIC_RANGE_TOLERANCE = fixed::FromInt(1)/2
	Tolerance for parabolic range calculations. More...
static std::map< entity_id_t, EntityParabolicRangeOutline >	ParabolicRangesOutlines

Enumeration Type Documentation

FlagMasks

enum anonymous_namespace{CCmpRangeManager.cpp}::FlagMasks

Representation of an entity, with the data needed for queries.

Enumerator
None
Normal
Injured
AllQuery
InWorld
RetainInFog
RevealShore
ScriptedVisibility
SharedVision

Function Documentation

CalcOwnerMask()

u32 anonymous_namespace{CCmpRangeManager.cpp}::CalcOwnerMask

(

player_id_t

owner

)

Convert an owner ID (-1 = unowned, 0 = gaia, 1..30 = players) into a 32-bit mask for quick set-membership tests.

CalcPlayerLosMask()

u32 anonymous_namespace{CCmpRangeManager.cpp}::CalcPlayerLosMask

(

player_id_t

player

)

Returns LOS mask for given player.

CalcSharedLosMask()

u32 anonymous_namespace{CCmpRangeManager.cpp}::CalcSharedLosMask

(

std::vector< player_id_t >

players

)

Returns shared LOS mask for given list of players.

CalcVisionSharingMask()

u16 anonymous_namespace{CCmpRangeManager.cpp}::CalcVisionSharingMask

(

player_id_t

player

)

Computes the shared vision mask for the player.

GetPlayerVisibility()

LosVisibility anonymous_namespace{CCmpRangeManager.cpp}::GetPlayerVisibility	(	u32	visibilities,
		player_id_t	player
	)

Computes the 2-bit visibility for one player, given the total 32-bit visibilities.

HasVisionSharing()

bool anonymous_namespace{CCmpRangeManager.cpp}::HasVisionSharing	(	u16	visionSharing,
		player_id_t	player
	)

Test whether a player share this vision.

InParabolicRange()

static bool anonymous_namespace{CCmpRangeManager.cpp}::InParabolicRange ( CFixedVector3D  v, fixed  range  )

static

Checks whether v is in a parabolic range of (0,0,0) The highest point of the paraboloid is (0,range/2,0) and the circle of distance 'range' around (0,0,0) on height y=0 is part of the paraboloid This equates to computing f(x, z) = y = -(xx + zz)/(2*range) + range/2 > 0, or alternatively sqrt(xx+zz) <= sqrt(range^2 - 2range*y).

Avoids sqrting and overflowing.

IsVisibilityDirty()

bool anonymous_namespace{CCmpRangeManager.cpp}::IsVisibilityDirty	(	u16	dirty,
		player_id_t	player
	)

Test whether the visibility is dirty for a given LoS region and a given player.

SetPlayerSharedDirtyVisibilityBit()

bool anonymous_namespace{CCmpRangeManager.cpp}::SetPlayerSharedDirtyVisibilityBit	(	u16 &	mask,
		player_id_t	player,
		bool	enable
	)

Add/remove a player to/from mask, which is a 1-bit mask representing a list of players.

Returns true if the mask is modified.

Variable Documentation

LOS_REGION_RATIO

constexpr int anonymous_namespace{CCmpRangeManager.cpp}::LOS_REGION_RATIO = 8

constexpr

How many LOS vertices to have per region.

LOS regions are used to keep track of units.

PARABOLIC_RANGE_TOLERANCE

const fixed anonymous_namespace{CCmpRangeManager.cpp}::PARABOLIC_RANGE_TOLERANCE = fixed::FromInt(1)/2

Tolerance for parabolic range calculations.

TODO C++20: change this to constexpr by fixing CFixed with std::is_constant_evaluated

ParabolicRangesOutlines

std::map<entity_id_t, EntityParabolicRangeOutline> anonymous_namespace{CCmpRangeManager.cpp}::ParabolicRangesOutlines

static