geom.c File Reference

Ship velocity limits, vector arithmetic and orientation geometry. More...

#include "game.h"

Go to the source code of this file.

Functions
short	get_ship_max_velocity (short obj)
void	recalc_max_velocity (short ship)
void	drain_fuel (short ship, short amount)
void	damage_ion_drive (short ship, short amount, short maximum)
int	GetShipAccelerationRate (short ship)
void	point_at (short obj, FixedVector point)
void	look_at (short obj)
void	position_relative (FixedVector *position, FixedVector direction, short distance)
void	position_relative_ijk (FixedVector *position, short obj, short right, short up, short forward)
short	FixedToShortSaturating (int value)
int	MinInt (int a, int b)
int	MaxInt (int a, int b)
int	AbsInt (int v)
unsigned int	SignFixed (int v)
short	WrapDegrees (short degrees)
short	equ_vector (const FixedVector *left, const FixedVector *right)
void	negate_vector (FixedVector *vector)
short	IsPairEqualityDifferentFromFlag (const unsigned int *values)
void	zero_vector (FixedVector *vector)
void	AddFixedVectors (const FixedVector *left, const FixedVector *right, FixedVector *sum)
void	SubtractFixedVectors (FixedVector *left, FixedVector *right, FixedVector *difference)
void	ComputeVectorDelta (FixedVector *from, FixedVector *to, FixedVector *delta)
void	ScaleFixedVector (FixedVector *vector, int scale, FixedVector *result)
void	divide_vector (FixedVector *vector, int divisor, FixedVector *result)
short	ChooseRandomSignedMagnitude (short minimum, short maximum, short allowNegative)
void	MakeRandomVectorFixed (short minimum, short maximum, FixedVector *vector)
void	FillFixedVectorWithRandomComponents (short limit, FixedVector *vector)
void	random_radial (const FixedVector *center, short radius, FixedVector *position)
void	rectangular_to_spherical (const FixedVector *rectangular, SphericalVector *spherical)
void	ConvertFixedVectorToShortVector (const FixedVector *source, ShortVector *destination)
int	dot_product (const FixedVector *left, const FixedVector *right)
short	vector_angle (FixedVector left, FixedVector right)
void	vector_cross_product (const FixedVector *left, const FixedVector *right, FixedVector *product)
short	NormalizeFixedVector (FixedVector *vector)
int	vector_length_in_dir (const FixedVector *vector, const FixedVector *direction)
void	vector_component_in_dir (const FixedVector *vector, const FixedVector *direction, FixedVector *component)
void	transform_to_objects_frame (const FixedVector *source, FixedVector *destination, short obj)
void	copy_frame (short source, short destination)
void	rotate_about_i (short angle, FixedVector *j, FixedVector *k)
void	rotate_about_j (short angle, FixedVector *i, FixedVector *k)
void	rotate_about_k (short angle, FixedVector *i, FixedVector *j)
void	init_ijk (short obj)
void	fix_objects_ijk (short obj)
void	alter_pitch (short angle, short obj)
void	alter_yaw (short angle, short obj)
void	alter_roll (short angle, short obj)
short	distance_between_points (const FixedVector *from, const FixedVector *to)
short	distance_from_point (short obj, const FixedVector *point)
short	distance_from_object (short obj, short other)
void	get_facing_range_from_point (short obj, const FixedVector *point)
void	get_facing_range_from_object (short obj, short other)
short	facing_to_object (short obj, FixedVector *point)
short	match_roll_orientation (short obj, short reference)
short	set_ship_rotation_goals (short obj, short turnRate, const FixedVector *direction, short pointingMode, short *yawGoal, short *pitchGoal)
void	point_ship (short obj, short turnRate, const FixedVector *direction)
void	point_ship_at_point (short obj, const FixedVector *point)
void	point_ship_at_object (short obj, short other)
void	point_capital_ship_at_object (short obj, short other)
void	point_perpendicular_to_point (short obj, const FixedVector *point)
void	point_ship_behind_object (short obj, short other)
void	point_ship_below_object (short obj, short other)
void	point_perpendicular (short obj, short other)
void	point_parallel (short obj, short other)
void	NormalizeAndScaleVector (FixedVector *vector, int scale)
void	SetVectorFixedPoint (unsigned int *p, short v)
short	IsPointWithinRange (FixedVector *from, FixedVector *to, short range)
short	check_for_collision (short obj)
void	remove_object (short obj)
void	position_child (short parent, short weapon, FixedVector *position)
void	child_object (short hardpoint, short child, short parent)
short	get_ship_slot (void)
short	find_vacant_3d_object (void)
void	FreePacketAndClear (void *slot, unsigned short releaseFlags)
void	apply_force_to_objects_center (FixedVector *force, short obj)
void	apply_force_to_object (FixedVector *point, FixedVector *force, short obj)
void	rotational_acceleration (FixedVector *point, FixedVector *force, short obj)
void	ClampVectorTo30 (short *p)
void	ClampTo30 (short *p)
void	transform_objects_to_your_view (void)
void	set_background_objects_rotation (short obj, FixedVector *direction)
void	get_right_shape (short obj, FixedVector *direction)

Variables
int	g_nFacingRangeQueryCount = 0
int	g_anCloakVisibilityPattern [20]
int	g_abObjectShapeOwned [SPACE_OBJECT_COUNT] = { 0 }
FixedVector	g_2_vNormalizedToTgt
int	g_nUnusedGeomWord [3]

Detailed Description

Ship velocity limits, vector arithmetic and orientation geometry.

Definition in file geom.c.

Function Documentation

AbsInt()

int AbsInt

(

int

v

)

Definition at line 151 of file geom.c.

References AbsInt().

Referenced by AbsInt(), and control_speed().

AddFixedVectors()

void AddFixedVectors	(	const FixedVector *	left,
		const FixedVector *	right,
		FixedVector *	sum )

Definition at line 211 of file geom.c.

References AddFixedVectors(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by accelerate_and_move_object(), AddFixedVectors(), animate_object(), apply_force_to_object(), apply_force_to_objects_center(), approach(), auto_pilot_sequence(), capital_ship_strike_mission(), chase_location(), compute_formation_destination(), ComputePointAheadOfObject(), ComputePointBehindObject(), Create_explosion_debris(), Create_ship_hit_debris(), DrawNavHazardMarker(), find_squad_center(), fire_weapon(), FireTargetCameraGuns(), goto_formation(), init_formation_burst(), init_hazard(), init_ship(), launch_object(), locate_ship(), make_shard(), Msit_n_spin(), new_view(), object_collision(), onboard_explosion(), position_relative(), random_radial(), real_crash_time(), servicetrack(), set_eye_direction_and_position(), set_sphere_point(), SetFleetOverviewView(), SpawnCapitalFlakProjectile(), SpawnFlakBurst(), start_dust(), steer_away_from_object(), steer_away_from_predicted_object(), update_objects_in_space(), update_star_field(), UpdateShipTurretGuns(), and UpdateTargetLeadIndicator().

alter_pitch()

void alter_pitch	(	short	angle,
		short	obj )

Definition at line 504 of file geom.c.

References alter_pitch(), fix_objects_ijk(), g_aShipForwardVector, g_aShipUpVector, and rotate_about_i().

Referenced by alter_pitch(), InitializeConstellationObject(), make_shard(), rotate_object(), set_background_objects_rotation(), and Set_up_ship_info().

alter_roll()

void alter_roll	(	short	angle,
		short	obj )

Definition at line 520 of file geom.c.

References alter_roll(), fix_objects_ijk(), g_aShipRightVector, g_aShipUpVector, and rotate_about_k().

Referenced by alter_roll(), InitializeConstellationObject(), rotate_object(), and Set_up_ship_info().

alter_yaw()

void alter_yaw	(	short	angle,
		short	obj )

Definition at line 512 of file geom.c.

References alter_yaw(), fix_objects_ijk(), g_aShipForwardVector, g_aShipRightVector, and rotate_about_j().

Referenced by alter_yaw(), InitializeConstellationObject(), make_shard(), rotate_object(), set_background_objects_rotation(), and Set_up_ship_info().

apply_force_to_object()

void apply_force_to_object	(	FixedVector *	point,
		FixedVector *	force,
		short	obj )

Definition at line 908 of file geom.c.

References AddFixedVectors(), apply_force_to_object(), check_for_lost_control(), ClampTo30(), DivideFixed(), g_acObjectType, g_aeObjectClass, g_anObjectPitchRotation, g_anObjectRollRotation, g_anObjectYawRotation, g_aObjectTypeData, g_aShipVelocity, g_asObjectCollisionRadius, MultiplyFixed(), OBJECT_CLASS_SHIP, PlanarMagnitude(), ObjectTypeData::radarRadius, transform_to_objects_frame(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by apply_force_to_object(), and object_collision().

apply_force_to_objects_center()

void apply_force_to_objects_center	(	FixedVector *	force,
		short	obj )

Definition at line 895 of file geom.c.

References AddFixedVectors(), apply_force_to_objects_center(), divide_vector(), g_acObjectType, g_aObjectTypeData, and g_aShipVelocity.

Referenced by apply_force_to_objects_center(), explosion_shock_wave(), and UpdateTargetCameraObject().

check_for_collision()

short check_for_collision

(

short

obj

)

Definition at line 769 of file geom.c.

References check_for_collision(), ComputeVectorDelta(), g_aeObjectClass, g_aShipPosition, g_asObjectCollisionRadius, g_vCollisionDelta, IsVectorWithinRange(), OBJECT_CLASS_PROJECTILE, OBJECT_CLASS_SHIP, and SPACE_LAST_MOVING_OBJECT.

Referenced by check_for_collision(), and object_collision().

child_object()

void child_object	(	short	hardpoint,
		short	child,
		short	parent )

Definition at line 822 of file geom.c.

References child_object(), g_acObjectOwner, g_aShipPosition, and position_child().

Referenced by child_object(), and fire_weapon().

ChooseRandomSignedMagnitude()

short ChooseRandomSignedMagnitude	(	short	minimum,
		short	maximum,
		short	allowNegative )

Definition at line 253 of file geom.c.

References ChooseRandomSignedMagnitude(), and RandomInRange().

Referenced by ChooseRandomSignedMagnitude(), and MakeRandomVectorFixed().

ClampTo30()

void ClampTo30

(

short *

p

)

Definition at line 1011 of file geom.c.

References ClampTo30().

Referenced by apply_force_to_object(), ClampTo30(), and rotational_acceleration().

ClampVectorTo30()

void ClampVectorTo30

(

short *

p

)

Definition at line 1001 of file geom.c.

References ClampVectorTo30().

Referenced by ClampVectorTo30(), and rotate_object().

ComputeVectorDelta()

void ComputeVectorDelta	(	FixedVector *	from,
		FixedVector *	to,
		FixedVector *	delta )

Definition at line 229 of file geom.c.

References ComputeVectorDelta(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by accelerate_and_move_object(), auto_pilot_sequence(), capital_ship_strike_mission(), check_for_collision(), ComputeVectorDelta(), distance_between_points(), distance_from_point(), draw_3d_scanner(), draw_nav_pointer(), explosion_shock_wave(), facing_to_object(), fire(), fire_weapon(), GetShipDistanceToNavPoint(), hemisphere(), init_formation_burst(), IsPointWithinRange(), new_view(), object_collision(), PlaySfxWaveFileByNumber(), point_at(), point_capital_ship_at_object(), point_ship_at_point(), real_crash_time(), room_for_me(), send_at_point(), servicetrack(), set_eye_direction_and_position(), set_objective_range(), SetFleetOverviewView(), ships_within_range(), sound_effect(), SpawnCapitalFlakProjectile(), steer_away_from_object(), steer_away_from_predicted_object(), transform_objects_to_your_view(), update_objective_location(), update_star_field(), and UpdateTargetLeadIndicator().

ConvertFixedVectorToShortVector()

void ConvertFixedVectorToShortVector	(	const FixedVector *	source,
		ShortVector *	destination )

Definition at line 307 of file geom.c.

References ConvertFixedVectorToShortVector(), FixedVector::x, ShortVector::x, FixedVector::y, ShortVector::y, FixedVector::z, and ShortVector::z.

Referenced by ConvertFixedVectorToShortVector().

copy_frame()

void copy_frame	(	short	source,
		short	destination )

Definition at line 470 of file geom.c.

References copy_frame(), g_aShipForwardVector, g_aShipRightVector, and g_aShipUpVector.

Referenced by auto_pilot_sequence(), chase_location(), copy_frame(), fire_weapon(), FireTargetCameraGuns(), generate_stars(), goto_formation(), new_view(), RunSpaceFlight(), set_eye_direction_and_position(), set_formation_position(), ShipExplosion(), try_far_spot(), and update_star_field().

damage_ion_drive()

void damage_ion_drive	(	short	ship,
		short	amount,
		short	maximum )

Definition at line 53 of file geom.c.

References damage_ion_drive(), g_acShipIonDriveDamage, MaxShort(), MinShort(), and recalc_max_velocity().

Referenced by damage_ion_drive(), internal_damage(), repair_internal_damage(), and your_internal_damage().

distance_between_points()

short distance_between_points	(	const FixedVector *	from,
		const FixedVector *	to )

Definition at line 528 of file geom.c.

References ComputeVectorDelta(), distance_between_points(), FixedToShortSaturating(), and Vector_magnitude().

Referenced by auto_pilot_sequence(), distance_between_points(), init_hazard(), and UpdateTargetCameraObject().

distance_from_object()

short distance_from_object	(	short	obj,
		short	other )

Definition at line 547 of file geom.c.

References distance_from_object(), distance_from_point(), g_aShipPosition, and g_asObjectCollisionRadius.

Referenced by abandoned(), any_enemy(), approach_and_engage(), attacker_in_range(), auto_pilot_sequence(), build_target_list(), capital_ship_strike_mission(), chaff_intelligence(), cleanup_objectives(), coming_home(), cruise_home(), defend_mission(), distance_from_object(), enemy_within_range(), escort_mission(), FF_missile_intelligence(), FindNearestMissileTargetingObject(), fire_turrets(), fire_weapon(), heat_seeking_missile_intelligence(), house_keep_objects(), imperial_formation(), in_danger(), mine_intelligence(), overlay_head_up_display(), rendezvous_mission(), report_kilrathi_rout(), return_to_buddy(), return_to_master(), room_for_me(), run_away(), scan_for_enemy(), select_target(), update_missile_warning(), UpdateTargetCameraTracking(), and UpdateTargetLeadIndicator().

distance_from_point()

short distance_from_point	(	short	obj,
		const FixedVector *	point )

Definition at line 538 of file geom.c.

References ComputeVectorDelta(), distance_from_point(), FixedToShortSaturating(), g_aShipPosition, g_asObjectCollisionRadius, g_vToTarget, and Vector_magnitude().

Referenced by auto_pilot_sequence(), auto_pilot_valid(), cruise_home(), cruise_to_destination(), dist_from_home(), distance_from_object(), distance_from_point(), get_facing_range_from_point(), orbit_sphere(), scan_for_enemy(), UpdateShipTurretGuns(), and UpdateTargetLeadIndicator().

divide_vector()

void divide_vector	(	FixedVector *	vector,
		int	divisor,
		FixedVector *	result )

Definition at line 245 of file geom.c.

References divide_vector(), DivideFixed(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by apply_force_to_objects_center(), Create_explosion_debris(), divide_vector(), find_squad_center(), and set_eye_direction_and_position().

dot_product()

int dot_product	(	const FixedVector *	left,
		const FixedVector *	right )

Definition at line 316 of file geom.c.

References dot_product(), MultiplyFixed(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by accelerate_and_move_object(), dot_product(), facing_to_object(), get_facing_range_from_object(), get_facing_range_from_point(), get_right_shape(), inflict_damage(), match_roll_orientation(), servicetrack(), set_background_objects_rotation(), sound_effect(), transform_to_objects_frame(), UpdateShipTurretGuns(), vector_angle(), and vector_length_in_dir().

drain_fuel()

void drain_fuel	(	short	ship,
		short	amount )

Definition at line 45 of file geom.c.

References drain_fuel(), g_anShipFuel, and recalc_max_velocity().

Referenced by accelerate_and_move_object(), drain_fuel(), housekeep_power_plant_and_fuel(), internal_damage(), and your_internal_damage().

equ_vector()

short equ_vector	(	const FixedVector *	left,
		const FixedVector *	right )

Definition at line 182 of file geom.c.

References equ_vector(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by auto_pilot_sequence(), auto_pilot_valid(), cruise_home(), cruise_to_destination(), equ_vector(), RecordCannedSceneObjectState(), and TryBeginStarSystemJump().

facing_to_object()

short facing_to_object	(	short	obj,
		FixedVector *	point )

Definition at line 591 of file geom.c.

References ComputeVectorDelta(), dot_product(), facing_to_object(), g_aShipForwardVector, g_aShipPosition, g_nFacingToTarget, and NormalizeFixedVector().

Referenced by facing_to_object(), and imperial_formation().

FillFixedVectorWithRandomComponents()

void FillFixedVectorWithRandomComponents	(	short	limit,
		FixedVector *	vector )

Definition at line 272 of file geom.c.

References FillFixedVectorWithRandomComponents(), and MakeRandomVectorFixed().

Referenced by animate_object(), Create_explosion_debris(), Create_ship_hit_debris(), FillFixedVectorWithRandomComponents(), random_radial(), and start_dust().

find_vacant_3d_object()

short find_vacant_3d_object

(

void

)

Definition at line 841 of file geom.c.

References find_vacant_3d_object(), g_aeObjectClass, g_asObjectScreenX, OBJECT_CLASS_NULL, and SPACE_LAST_MOVING_OBJECT.

Referenced by animate_object(), Create_explosion_debris(), Create_ship_hit_debris(), draw_nav_pointer(), find_vacant_3d_object(), init_constellation(), make_hazard(), make_shard(), new_object(), onboard_explosion(), place_exhaust_on_ships(), ShipExplosion(), ToggleTargetCameraTracking(), unwarp(), and warp().

fix_objects_ijk()

void fix_objects_ijk

(

short

obj

)

Definition at line 481 of file geom.c.

References fix_objects_ijk(), g_aShipForwardVector, g_aShipRightVector, g_aShipUpVector, NormalizeFixedVector(), and vector_cross_product().

Referenced by alter_pitch(), alter_roll(), alter_yaw(), fix_objects_ijk(), make_shard(), new_view(), point_at(), set_eye_direction_and_position(), update_objects_in_space(), and UpdateFleetOverviewCameraRotation().

FixedToShortSaturating()

short FixedToShortSaturating

(

int

value

)

Definition at line 122 of file geom.c.

References FixedToShortSaturating().

Referenced by capital_ship_strike_mission(), chase_location(), control_speed(), distance_between_points(), distance_from_point(), explosion_shock_wave(), FixedToShortSaturating(), GetShipDistanceToNavPoint(), GetVectorMagnitude(), goto_location(), real_crash_time(), real_velocity(), and update_objective_location().

FreePacketAndClear()

void FreePacketAndClear	(	void *	slot,
		unsigned short	releaseFlags )

Definition at line 45 of file disk.c.

get_facing_range_from_object()

void get_facing_range_from_object	(	short	obj,
		short	other )

Definition at line 578 of file geom.c.

References dot_product(), g_2_vNormalizedToTgt, g_aShipForwardVector, g_aShipPosition, g_asObjectCollisionRadius, g_nTargetFacing, g_nTargetRange, get_facing_range_from_object(), get_facing_range_from_point(), and negate_vector().

Referenced by being_tailed(), BuildCommunicationCommandMenu(), capital_ship_strike_mission(), cruise_to_destination(), fire(), futurion_intelligence(), get_facing_range_from_object(), heat_seeking_missile_intelligence(), intelligence_events(), Mkill_missile(), object_intelligence(), patrol_area(), prepare_for_jump(), scan_for_enemy(), tanker_intelligence(), target_locking(), and UpdateSavedTorpedoTargetLock().

get_facing_range_from_point()

void get_facing_range_from_point	(	short	obj,
		const FixedVector *	point )

Definition at line 562 of file geom.c.

References distance_from_point(), dot_product(), g_2_vNormalizedToTgt, g_aShipForwardVector, g_asObjectCollisionRadius, g_nFacingRangeQueryCount, g_nFacingToTarget, g_nTargetRange, g_vToTarget, get_facing_range_from_point(), and NormalizeFixedVector().

Referenced by chase_location(), get_facing_range_from_object(), get_facing_range_from_point(), goto_formation(), goto_location(), patrol_area(), and prevent_collision().

get_right_shape()

void get_right_shape	(	short	obj,
		FixedVector *	direction )

Definition at line 1181 of file geom.c.

References ArcCos(), CheckHeapBlockSignature(), DIRECTION_VIEW_COUNT, dot_product(), EYE_OBJECT, FetchDiskPacketRetrying(), free_view_buffer(), FreePacketAndClear(), g_137_aDirectionViewUpVectorArray, g_27_stViewScratchInfo, g_9_aDirectionLookRightVector, g_abObjectShapeOwned, g_acDirectionShapeFlip, g_acDirectionShapeFrame, g_acObjectType, g_aeObjectClass, g_aObjectResourceSlots, g_aObjectTypeData, g_apObjectShape, g_apPacketReferenceGroups, g_aShipUpVector, g_asLoadedShipViewFrame, g_asObjectFlip, g_asObjectScreenAngle, g_asObjectType, g_asObjectViewFrame, g_bExpandedShipGraphicsEnabled, get_right_shape(), IdentityWord(), initialize_view_buffer(), MaxShort(), MinShort(), negate_vector(), NormalizeFixedVector(), OBJECT_CLASS_BASE, OBJECT_CLASS_CAPITAL_SHIP, OBJECT_CLASS_MISSILE, OBJECT_CLASS_SHIP, SphericalVector::pitch, Viewport::pixels, rectangular_to_spherical(), ObjectTypeData::resourceType, rotate_about_i(), rotate_about_j(), transform_to_objects_frame(), FixedVector::x, FixedVector::y, SphericalVector::yaw, and FixedVector::z.

Referenced by get_right_shape(), and transform_objects_to_your_view().

get_ship_max_velocity()

short get_ship_max_velocity

(

short

obj

)

Definition at line 9 of file geom.c.

References g_acObjectType, g_aeObjectClass, g_aObjectTypeData, g_asPilotLevel, g_asShipSide, get_ship_max_velocity(), GetAdaptiveTurnRate(), ObjectTypeData::maximumVelocity, MaxShort(), MinShort(), OBJECT_CLASS_SHIP, RATING_ACE_SPIRIT, and SIDE_KILRATHI.

Referenced by FF_missile_intelligence(), fire_afterburner(), fire_weapon(), get_ship_max_velocity(), heat_seeking_missile_intelligence(), object_intelligence(), and recalc_max_velocity().

get_ship_slot()

short get_ship_slot

(

void

)

Definition at line 829 of file geom.c.

References g_aeObjectClass, get_ship_slot(), and OBJECT_CLASS_NULL.

Referenced by fire_weapon(), get_ship_slot(), and initialize_ship().

GetShipAccelerationRate()

int GetShipAccelerationRate

(

short

ship

)

Definition at line 62 of file geom.c.

References ObjectTypeData::acceleration, DivideFixed(), g_acObjectType, g_aeObjectClass, g_aObjectTypeData, g_asPilotLevel, g_asShipSide, GetAdaptiveTurnRate(), GetShipAccelerationRate(), MaxShort(), MinShort(), MultiplyFixed(), OBJECT_CLASS_SHIP, RATING_ACE_SPIRIT, and SIDE_KILRATHI.

Referenced by accelerate_and_move_object(), approach_speed(), control_speed(), and GetShipAccelerationRate().

init_ijk()

void init_ijk

(

short

obj

)

Definition at line 453 of file geom.c.

References g_anObjectPitchRotation, g_anObjectRollRotation, g_anObjectYawRotation, g_aShipForwardVector, g_aShipRightVector, g_aShipUpVector, init_ijk(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by ApplyAlternateShipType(), init_ijk(), InitializeConstellationObject(), set_background_objects_rotation(), and set_objects_data().

IsPairEqualityDifferentFromFlag()

short IsPairEqualityDifferentFromFlag

(

const unsigned int *

values

)

Definition at line 191 of file geom.c.

References IsPairEqualityDifferentFromFlag().

Referenced by IsPairEqualityDifferentFromFlag().

IsPointWithinRange()

short IsPointWithinRange	(	FixedVector *	from,
		FixedVector *	to,
		short	range )

Definition at line 760 of file geom.c.

References ComputeVectorDelta(), IsPointWithinRange(), and IsVectorWithinRange().

Referenced by IsPointWithinRange(), kilrathi_near(), near_field(), ok_hazard_spot(), try_far_spot(), and within_field().

look_at()

void look_at

(

short

obj

)

Definition at line 95 of file geom.c.

References EYE_OBJECT, g_aShipPosition, look_at(), and point_at().

Referenced by look_at(), new_view(), and set_eye_direction_and_position().

MakeRandomVectorFixed()

void MakeRandomVectorFixed	(	short	minimum,
		short	maximum,
		FixedVector *	vector )

Definition at line 264 of file geom.c.

References ChooseRandomSignedMagnitude(), MakeRandomVectorFixed(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by FillFixedVectorWithRandomComponents(), MakeRandomVectorFixed(), and onboard_explosion().

match_roll_orientation()

short match_roll_orientation	(	short	obj,
		short	reference )

Definition at line 604 of file geom.c.

References ArcCos(), dot_product(), g_aShipRightVector, g_aShipUpVector, match_roll_orientation(), NormalizeFixedVector(), WrapDegrees(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by chase_location(), goto_formation(), match_roll_orientation(), and set_eye_direction_and_position().

MaxInt()

int MaxInt	(	int	a,
		int	b )

Definition at line 142 of file geom.c.

References MaxInt().

Referenced by MaxInt(), and object_collision().

MinInt()

int MinInt	(	int	a,
		int	b )

Definition at line 133 of file geom.c.

References MinInt().

Referenced by accelerate_and_move_object(), MinInt(), and object_collision().

negate_vector()

void negate_vector

(

FixedVector *

vector

)

Definition at line 203 of file geom.c.

References negate_vector(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by get_facing_range_from_object(), get_right_shape(), negate_vector(), object_collision(), set_background_objects_rotation(), set_eye_direction_and_position(), skew_randomly(), UpdateShipTurretGuns(), and UpdateTargetCameraObject().

NormalizeAndScaleVector()

void NormalizeAndScaleVector	(	FixedVector *	vector,
		int	scale )

Definition at line 747 of file geom.c.

References NormalizeAndScaleVector(), NormalizeFixedVector(), and ScaleFixedVector().

Referenced by accelerate_and_move_object(), NormalizeAndScaleVector(), set_eye_direction_and_position(), SetVectorFixedPoint(), and UpdateTargetCameraObject().

NormalizeFixedVector()

short NormalizeFixedVector

(

FixedVector *

vector

)

Definition at line 347 of file geom.c.

References DivideFixed(), NormalizeFixedVector(), Vector_magnitude(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by auto_pilot_sequence(), capital_ship_strike_mission(), explosion_shock_wave(), facing_to_object(), FireTargetCameraGuns(), fix_objects_ijk(), get_facing_range_from_point(), get_right_shape(), launch_object(), match_roll_orientation(), new_view(), NormalizeAndScaleVector(), NormalizeFixedVector(), object_collision(), position_relative(), set_background_objects_rotation(), set_eye_direction_and_position(), sound_effect(), SpawnCapitalFlakProjectile(), UpdateShipTurretGuns(), vector_angle(), and vector_length_in_dir().

point_at()

void point_at	(	short	obj,
		FixedVector	point )

Definition at line 84 of file geom.c.

References ComputeVectorDelta(), fix_objects_ijk(), g_aShipForwardVector, g_aShipPosition, point_at(), and shrink_vector().

Referenced by approach(), auto_pilot_sequence(), fire_weapon(), FireTargetCameraGuns(), init_hazard(), look_at(), point_at(), SetFleetOverviewView(), and UpdateShipTurretGuns().

point_capital_ship_at_object()

void point_capital_ship_at_object	(	short	obj,
		short	other )

Definition at line 692 of file geom.c.

References ComputeVectorDelta(), g_aShipPosition, point_capital_ship_at_object(), and point_ship().

Referenced by capital_ship_strike_mission(), point_capital_ship_at_object(), and tanker_intelligence().

point_parallel()

void point_parallel	(	short	obj,
		short	other )

Definition at line 740 of file geom.c.

References g_aShipForwardVector, point_parallel(), and point_ship().

Referenced by escort_buddy(), goto_formation(), point_parallel(), and return_to_buddy().

point_perpendicular()

void point_perpendicular	(	short	obj,
		short	other )

Definition at line 734 of file geom.c.

References g_aShipPosition, point_perpendicular(), and point_perpendicular_to_point().

Referenced by defend_mission(), Mturn_n_kick(), point_perpendicular(), and return_to_master().

point_perpendicular_to_point()

void point_perpendicular_to_point	(	short	obj,
		const FixedVector *	point )

Definition at line 702 of file geom.c.

References g_anYawGoal, point_perpendicular_to_point(), and point_ship_at_point().

Referenced by orbit_sphere(), point_perpendicular(), and point_perpendicular_to_point().

point_ship()

void point_ship	(	short	obj,
		short	turnRate,
		const FixedVector *	direction )

Definition at line 667 of file geom.c.

References g_anPitchGoal, g_anYawGoal, point_ship(), and set_ship_rotation_goals().

Referenced by chase_location(), FF_missile_intelligence(), formation_burst(), goto_formation(), heat_seeking_missile_intelligence(), object_intelligence(), point_capital_ship_at_object(), point_parallel(), point_ship(), point_ship_at_point(), and run_away().

point_ship_at_object()

void point_ship_at_object	(	short	obj,
		short	other )

Definition at line 686 of file geom.c.

References g_aShipPosition, point_ship_at_object(), and point_ship_at_point().

Referenced by capital_ship_strike_mission(), FF_missile_intelligence(), heat_seeking_missile_intelligence(), imperial_formation(), Mkill_missile(), Mram_missile(), Msit_n_fire(), Msit_n_spin(), Mstrafe_enemy(), Msuicide_run(), Mtail_fire(), Mtarget_missile(), Mturn_n_spin(), patrol_area(), point_ship_at_object(), rendezvous_mission(), return_to_buddy(), ShipAiState45(), streak_toward(), UpdateSavedTorpedoTargetLock(), and UpdateTargetCameraObject().

point_ship_at_point()

void point_ship_at_point	(	short	obj,
		const FixedVector *	point )

Definition at line 676 of file geom.c.

References ComputeVectorDelta(), g_aShipPosition, point_ship(), and point_ship_at_point().

Referenced by cruise_home(), cruise_to_destination(), goto_location(), Mline_up_drop(), Msit_n_spin(), Mtry2tail(), orbit_sphere(), patrol_area(), point_perpendicular_to_point(), point_ship_at_object(), point_ship_at_point(), point_ship_behind_object(), and point_ship_below_object().

point_ship_behind_object()

void point_ship_behind_object	(	short	obj,
		short	other )

Definition at line 712 of file geom.c.

References g_aShipForwardVector, g_aShipPosition, g_asObjectCollisionRadius, point_ship_at_point(), point_ship_behind_object(), and position_relative().

Referenced by coming_home(), Mzip_past(), and point_ship_behind_object().

point_ship_below_object()

void point_ship_below_object	(	short	obj,
		short	other )

Definition at line 723 of file geom.c.

References g_aShipPosition, g_aShipUpVector, g_asObjectCollisionRadius, point_ship_at_point(), point_ship_below_object(), and position_relative().

Referenced by Mzip_past(), and point_ship_below_object().

position_child()

void position_child	(	short	parent,
		short	weapon,
		FixedVector *	position )

Definition at line 801 of file geom.c.

References g_aShipForwardVector, g_aShipPosition, g_aShipRightVector, g_aShipUpVector, g_aShipWeapons, position_child(), FixedVector::x, ShortVector::x, FixedVector::y, ShortVector::y, FixedVector::z, and ShortVector::z.

Referenced by child_object(), fire_turrets(), and position_child().

position_relative()

void position_relative	(	FixedVector *	position,
		FixedVector	direction,
		short	distance )

Definition at line 101 of file geom.c.

References AddFixedVectors(), NormalizeFixedVector(), position_relative(), and ScaleFixedVector().

Referenced by launch_carrier_fighter(), Mtry2tail(), offset_location(), point_ship_behind_object(), point_ship_below_object(), position_relative(), and position_relative_ijk().

position_relative_ijk()

void position_relative_ijk	(	FixedVector *	position,
		short	obj,
		short	right,
		short	up,
		short	forward )

Definition at line 112 of file geom.c.

References g_aShipForwardVector, g_aShipPosition, g_aShipRightVector, g_aShipUpVector, position_relative(), and position_relative_ijk().

Referenced by auto_position(), new_view(), position_relative_ijk(), SetFleetOverviewView(), and try_far_spot().

random_radial()

void random_radial	(	const FixedVector *	center,
		short	radius,
		FixedVector *	position )

Definition at line 278 of file geom.c.

References AddFixedVectors(), FillFixedVectorWithRandomComponents(), random_radial(), and RandomBelowOrEqual().

Referenced by place_ship_near_player_until_valid(), and random_radial().

recalc_max_velocity()

void recalc_max_velocity

(

short

ship

)

Definition at line 28 of file geom.c.

References celerate(), g_acShipIonDriveDamage, g_anShipFuel, g_asShipMaximumVelocity, get_ship_max_velocity(), and recalc_max_velocity().

Referenced by ApplyAlternateShipType(), BeginShipCloak(), damage_ion_drive(), drain_fuel(), recalc_max_velocity(), set_objects_data(), and Set_up_ship_info().

rectangular_to_spherical()

void rectangular_to_spherical	(	const FixedVector *	rectangular,
		SphericalVector *	spherical )

Definition at line 289 of file geom.c.

References ArcCos(), DivideFixed(), SphericalVector::pitch, PlanarMagnitude(), SphericalVector::radius, rectangular_to_spherical(), Vector_magnitude(), FixedVector::x, FixedVector::y, SphericalVector::yaw, and FixedVector::z.

Referenced by draw_3d_scanner(), get_right_shape(), object_collision(), rectangular_to_spherical(), set_background_objects_rotation(), set_objective_range(), and set_ship_rotation_goals().

remove_object()

void remove_object

(

short

obj

)

Definition at line 858 of file geom.c.

References clear_alert(), FreePacketAndClear(), g_abHazardObjects, g_acShipPendingMessage, g_acShipPortrait, g_aeObjectClass, g_apObjectShape, g_asLoadedShipViewFrame, g_asObjectDistance, g_asObjectScreenX, g_asObjectType, g_asShipIntelResourceKey, g_asShipIntelSlot, g_asShipManeuver, g_asShipSide, g_nNavPointerObject, g_nYourWingman, MANEUVER_NONE, OBJECT_CLASS_CAPITAL_SHIP, OBJECT_CLASS_NULL, OBJECT_CLASS_SHIP, remove_object(), and SIDE_NEUTRAL.

Referenced by animate_shape(), ApplyCannedSceneObjectEventRecord(), auto_pilot_sequence(), ClearTargetCameraView(), ClearTransientObjectsForEjection(), coming_home(), Create_explosion_debris(), cruise_home(), death_sequence(), ejection_sequence(), free_ship(), FreeConstellationObject(), house_keep_objects(), object_collision(), remove_all_3d_objects(), remove_hazard(), remove_nav_point_objects(), remove_nav_pointer(), remove_object(), run_away(), set_up_action_sphere(), set_up_next_wave(), and UpdateTargetCameraObject().

rotate_about_i()

void rotate_about_i	(	short	angle,
		FixedVector *	j,
		FixedVector *	k )

Definition at line 393 of file geom.c.

References CosFixed(), MultiplyFixed(), rotate_about_i(), SinFixed(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by alter_pitch(), generate_stars(), get_right_shape(), initialize_direction_view_frame(), rotate_about_i(), set_eye_direction_and_position(), try_far_spot(), update_star_field(), and UpdateFleetOverviewCameraRotation().

rotate_about_j()

void rotate_about_j	(	short	angle,
		FixedVector *	i,
		FixedVector *	k )

Definition at line 413 of file geom.c.

References CosFixed(), MultiplyFixed(), rotate_about_j(), SinFixed(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by alter_yaw(), generate_stars(), get_right_shape(), initialize_direction_view_frame(), rotate_about_j(), set_eye_direction_and_position(), try_far_spot(), update_star_field(), and UpdateFleetOverviewCameraRotation().

rotate_about_k()

void rotate_about_k	(	short	angle,
		FixedVector *	i,
		FixedVector *	j )

Definition at line 433 of file geom.c.

References CosFixed(), MultiplyFixed(), rotate_about_k(), SinFixed(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by alter_roll(), and rotate_about_k().

rotational_acceleration()

void rotational_acceleration	(	FixedVector *	point,
		FixedVector *	force,
		short	obj )

Definition at line 965 of file geom.c.

References check_for_lost_control(), ClampTo30(), DivideFixed(), g_acObjectType, g_aeObjectClass, g_anObjectPitchRotation, g_anObjectRollRotation, g_anObjectYawRotation, g_aObjectTypeData, g_asObjectCollisionRadius, MultiplyFixed(), OBJECT_CLASS_SHIP, rotational_acceleration(), transform_to_objects_frame(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by object_collision(), and rotational_acceleration().

ScaleFixedVector()

void ScaleFixedVector	(	FixedVector *	vector,
		int	scale,
		FixedVector *	result )

Definition at line 237 of file geom.c.

References MultiplyFixed(), ScaleFixedVector(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by accelerate_and_move_object(), animate_object(), approach(), auto_pilot_sequence(), capital_ship_strike_mission(), chase_location(), ComputePointAheadOfObject(), ComputePointBehindObject(), explosion_shock_wave(), fire_weapon(), FireTargetCameraGuns(), fix_velocity(), generate_stars(), init_formation_burst(), init_hazard(), InitializeConstellationObject(), launch_carrier_fighter(), launch_object(), match_ship_to_eye(), Msit_n_spin(), new_view(), NormalizeAndScaleVector(), object_collision(), position_relative(), real_crash_time(), ScaleFixedVector(), servicetrack(), set_eye_direction_and_position(), SetFleetOverviewView(), SpawnCapitalFlakProjectile(), SpawnFlakBurst(), start_dust(), steer_away_from_predicted_object(), update_star_field(), UpdateShipTurretGuns(), UpdateTargetCameraObject(), UpdateTargetLeadIndicator(), and vector_component_in_dir().

set_background_objects_rotation()

void set_background_objects_rotation	(	short	obj,
		FixedVector *	direction )

Definition at line 1152 of file geom.c.

References alter_pitch(), alter_yaw(), ArcCos(), dot_product(), EYE_OBJECT, g_aShipRightVector, g_aShipUpVector, g_asObjectScreenAngle, g_asObjectScreenScale, init_ijk(), negate_vector(), NormalizeFixedVector(), SphericalVector::pitch, rectangular_to_spherical(), SCRATCH_VIEW_OBJECT, set_background_objects_rotation(), FixedVector::x, FixedVector::y, SphericalVector::yaw, and FixedVector::z.

Referenced by set_background_objects_rotation(), and transform_objects_to_your_view().

set_ship_rotation_goals()

short set_ship_rotation_goals	(	short	obj,
		short	turnRate,
		const FixedVector *	direction,
		short	pointingMode,
		short *	yawGoal,
		short *	pitchGoal )

Definition at line 622 of file geom.c.

References ArcSin(), DivideFixed(), SphericalVector::pitch, PlanarMagnitude(), SphericalVector::radius, rectangular_to_spherical(), set_ship_rotation_goals(), transform_to_objects_frame(), Vector_magnitude(), WrapDegrees(), FixedVector::x, FixedVector::y, SphericalVector::yaw, and FixedVector::z.

Referenced by point_ship(), and set_ship_rotation_goals().

SetVectorFixedPoint()

void SetVectorFixedPoint	(	unsigned int *	p,
		short	v )

Definition at line 754 of file geom.c.

References NormalizeAndScaleVector(), and SetVectorFixedPoint().

Referenced by make_shard(), send_at_point(), set_eye_direction_and_position(), and SetVectorFixedPoint().

SignFixed()

unsigned int SignFixed

(

int

v

)

Definition at line 160 of file geom.c.

References SignFixed().

Referenced by approach_speed(), and SignFixed().

SubtractFixedVectors()

void SubtractFixedVectors	(	FixedVector *	left,
		FixedVector *	right,
		FixedVector *	difference )

Definition at line 220 of file geom.c.

References SubtractFixedVectors(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by auto_pilot_sequence(), fire_weapon(), init_hazard(), object_collision(), and SubtractFixedVectors().

transform_objects_to_your_view()

void transform_objects_to_your_view

(

void

)

Definition at line 1022 of file geom.c.

References ComputeVectorDelta(), DivideFixed(), draw_nav_pointer(), EYE_OBJECT, g_aeObjectClass, g_anCloakVisibilityPattern, g_anShipCloakState, g_aShipPosition, g_asObjectCollisionRadius, g_asObjectCounter, g_asObjectDistance, g_asObjectScale, g_asObjectScreenAngle, g_asObjectScreenScale, g_asObjectScreenX, g_asObjectScreenY, g_asObjectType, g_asObjectViewFrame, g_asShipCloakElapsedFrames, g_nNavPointerObject, g_nScreenWidth, g_nSpaceFrame, get_right_shape(), MaxShort(), MinShort(), MultiplyFixed(), OBJECT_CLASS_ASTEROID, OBJECT_CLASS_CAPITAL_SHIP, OBJECT_CLASS_DEBRIS, OBJECT_CLASS_DUST, OBJECT_CLASS_EXPLOSION, OBJECT_CLASS_FIXED_OBJECT, OBJECT_CLASS_FUTURION, OBJECT_CLASS_MISSILE, OBJECT_CLASS_NULL, OBJECT_CLASS_PLANET, OBJECT_CLASS_PROJECTILE, OBJECT_CLASS_SHIP, OBJECT_CLASS_STAR, set_background_objects_rotation(), SPACE_LAST_MOVING_OBJECT, transform_objects_to_your_view(), transform_to_objects_frame(), Vector_magnitude(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by DrawSpaceSceneFrame(), and transform_objects_to_your_view().

transform_to_objects_frame()

void transform_to_objects_frame	(	const FixedVector *	source,
		FixedVector *	destination,
		short	obj )

Definition at line 495 of file geom.c.

References dot_product(), g_aShipForwardVector, g_aShipRightVector, g_aShipUpVector, transform_to_objects_frame(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by apply_force_to_object(), draw_3d_scanner(), draw_nav_pointer(), get_right_shape(), object_collision(), rotational_acceleration(), set_objective_range(), set_ship_rotation_goals(), steer_away_from_object(), steer_away_from_predicted_object(), transform_objects_to_your_view(), transform_to_objects_frame(), update_star_field(), and UpdateTargetLeadIndicator().

vector_angle()

short vector_angle	(	FixedVector	left,
		FixedVector	right )

Definition at line 324 of file geom.c.

References dot_product(), NormalizeFixedVector(), and vector_angle().

Referenced by hemisphere(), and vector_angle().

vector_component_in_dir()

void vector_component_in_dir	(	const FixedVector *	vector,
		const FixedVector *	direction,
		FixedVector *	component )

Definition at line 375 of file geom.c.

References ScaleFixedVector(), vector_component_in_dir(), and vector_length_in_dir().

Referenced by fire_weapon(), house_keep_objects(), launch_object(), object_collision(), UpdateTargetLeadIndicator(), and vector_component_in_dir().

vector_cross_product()

void vector_cross_product	(	const FixedVector *	left,
		const FixedVector *	right,
		FixedVector *	product )

Definition at line 335 of file geom.c.

References MultiplyFixed(), vector_cross_product(), FixedVector::x, FixedVector::y, and FixedVector::z.

Referenced by fix_objects_ijk(), and vector_cross_product().

vector_length_in_dir()

int vector_length_in_dir	(	const FixedVector *	vector,
		const FixedVector *	direction )

Definition at line 361 of file geom.c.

References dot_product(), MultiplyFixed(), NormalizeFixedVector(), vector_length_in_dir(), and Vector_magnitude().

Referenced by vector_component_in_dir(), and vector_length_in_dir().

WrapDegrees()

short WrapDegrees

(

short

degrees

)

Definition at line 171 of file geom.c.

References WrapDegrees().

Referenced by match_roll_orientation(), set_ship_rotation_goals(), and WrapDegrees().

zero_vector()

void zero_vector

(

FixedVector *

vector

)

Definition at line 197 of file geom.c.

References FixedVector::x, FixedVector::y, FixedVector::z, and zero_vector().

Referenced by accelerate_and_move_object(), animate_object(), auto_pilot_sequence(), capital_ship_strike_mission(), ClearTargetCameraView(), cruise_home(), find_squad_center(), FireTargetCameraGuns(), initialize_object(), locate_ship(), new_view(), object_collision(), run_away(), set_eye_direction_and_position(), Set_up_ship_info(), SetFleetOverviewView(), SpawnCapitalFlakProjectile(), SpawnFlakBurst(), SpawnMissionEjectionPod(), UpdateShipTurretGuns(), UpdateTargetCameraObject(), UpdateTargetCameraTracking(), UpdateTargetLeadIndicator(), and zero_vector().

Variable Documentation

g_2_vNormalizedToTgt

FixedVector g_2_vNormalizedToTgt

Definition at line 1332 of file geom.c.

Referenced by get_facing_range_from_object(), get_facing_range_from_point(), and UpdateShipTurretGuns().

g_abObjectShapeOwned

int g_abObjectShapeOwned[SPACE_OBJECT_COUNT] = { 0 }

Definition at line 559 of file geom.c.

Referenced by get_right_shape().

g_anCloakVisibilityPattern

int g_anCloakVisibilityPattern[20]

Initial value:

                               = {
    1, 0, 0, 0, 1, 0, 0, 1, 1, 0,
    0, 0, 1, 1, 1, 0, 0, 1, 1, 0
}

Definition at line 555 of file geom.c.

Referenced by show_target_disp(), and transform_objects_to_your_view().

g_nFacingRangeQueryCount

int g_nFacingRangeQueryCount = 0

Definition at line 554 of file geom.c.

Referenced by get_facing_range_from_point().

g_nUnusedGeomWord

int g_nUnusedGeomWord[3]

Definition at line 1333 of file geom.c.