Handles all the weapons in game. More...

#include "weapon.h"
#include "array.h"
#include "ai.h"
#include "camera.h"
#include "collision.h"
#include "explosion.h"
#include "gui.h"
#include "log.h"
#include "nstring.h"
#include "nlua_pilot.h"
#include "nlua_vec2.h"
#include "opengl.h"
#include "pilot.h"
#include "player.h"
#include "rng.h"
#include "spfx.h"

Data Structures
struct	Weapon
	In-game representation of a weapon. More...

Macros
#define	weapon_isSmart(w) (w->think != NULL)

#define	WEAPON_FLAG_DESTROYED 1

#define	weapon_isFlag(w, f) ((w)->flags & (f))

#define	weapon_setFlag(w, f) ((w)->flags \|= (f))

#define	weapon_rmFlag(w, f) ((w)->flags &= ~(f))

Enumerations
enum	WeaponStatus { WEAPON_STATUS_LOCKING , WEAPON_STATUS_OK , WEAPON_STATUS_UNJAMMED , WEAPON_STATUS_JAMMED , WEAPON_STATUS_JAMMED_SLOWED }

Functions
static double	weapon_aimTurret (const Outfit outfit, const Pilot parent, const Pilot pilot_target, const vec2 pos, const vec2 *vel, double dir, double swivel, double time)
	Gets the aim position of a turret weapon. More...

static void	weapon_createBolt (Weapon w, const Outfit outfit, double T, const double dir, const vec2 pos, const vec2 vel, const Pilot *parent, double time, int aim)
	Creates the bolt specific properties of a weapon. More...

static void	weapon_createAmmo (Weapon w, const Outfit outfit, double T, const double dir, const vec2 pos, const vec2 vel, const Pilot *parent, double time, int aim)
	Creates the ammo specific properties of a weapon. More...

static Weapon *	weapon_create (PilotOutfitSlot po, double T, const double dir, const vec2 pos, const vec2 vel, const Pilot parent, const unsigned int target, double time, int aim)
	Creates a new weapon. More...

static double	weapon_computeTimes (double rdir, double rx, double ry, double dvx, double dvy, double pxv, double vmin, double acc, double *tt)
	Computes precisely interception times for propelled weapons (rockets). More...

static void	weapon_render (Weapon *w, const double dt)
	Renders an individual weapon. More...

static void	weapons_updateLayer (const double dt, const WeaponLayer layer)
	Updates all the weapons in the layer. More...

static void	weapon_update (Weapon *w, const double dt, WeaponLayer layer)
	Updates an individual weapon. More...

static void	weapon_sample_trail (Weapon *w)
	Updates the animated trail for a weapon. More...

static void	weapon_destroy (Weapon *w)
	Destroys a weapon. More...

static void	weapon_free (Weapon *w)
	Frees the weapon. More...

static void	weapon_explodeLayer (WeaponLayer layer, double x, double y, double radius, const Pilot *parent, int mode)
	Explodes all the things on a layer. More...

static void	weapons_purgeLayer (Weapon **layer)
	Purges weapons marked for deletion. More...

static int	weapon_checkCanHit (const Weapon w, const Pilot p)
	Checks to see if the weapon can hit the pilot. More...

static void	weapon_hit (Weapon w, Pilot p, vec2 *pos)
	Weapon hit the pilot. More...

static void	weapon_miss (Weapon *w)
	Weapon missed and is due to be destroyed. More...

static void	weapon_hitAst (Weapon w, Asteroid a, WeaponLayer layer, vec2 *pos)
	Weapon hit an asteroid. More...

static void	weapon_hitBeam (Weapon w, Pilot p, WeaponLayer layer, vec2 pos[2], const double dt)
	Weapon hit the pilot. More...

static void	weapon_hitAstBeam (Weapon w, Asteroid a, WeaponLayer layer, vec2 pos[2], const double dt)
	Weapon hit an asteroid. More...

static void	think_seeker (Weapon *w, const double dt)
	The AI of seeker missiles. More...

static void	think_beam (Weapon *w, const double dt)
	The pseudo-ai of the beam weapons. More...

void	weapon_minimap (const double res, const double w, const double h, const RadarShape shape, double alpha)
	Draws the minimap weapons (used in player.c). More...

static void	weapon_setThrust (Weapon *w, double thrust)
	Sets the weapon's thrust. More...

static void	weapon_setTurn (Weapon *w, double turn)
	Sets the weapon's turn. More...

void	weapon_init (void)
	Initializes the weapon stuff. More...

void	weapons_update (const double dt)
	Updates all the weapon layers. More...

void	weapons_render (const WeaponLayer layer, const double dt)
	Renders all the weapons in a layer. More...

static void	weapon_renderBeam (Weapon *w, const double dt)

void	weapon_hitAI (Pilot p, const Pilot shooter, double dmg)
	Informs the AI if needed that it's been hit. More...

void	weapon_add (PilotOutfitSlot po, const double T, const double dir, const vec2 pos, const vec2 vel, const Pilot parent, unsigned int target, double time, int aim)
	Creates a new weapon. More...

unsigned int	beam_start (PilotOutfitSlot po, const double dir, const vec2 pos, const vec2 vel, const Pilot parent, const unsigned int target, int aim)
	Starts a beam weapon. More...

void	beam_end (const unsigned int parent, unsigned int beam)
	Ends a beam weapon. More...

void	weapon_clear (void)
	Clears all the weapons, does NOT free the layers. More...

void	weapon_exit (void)
	Destroys all the weapons and frees it all. More...

void	weapon_explode (double x, double y, double radius, int dtype, double damage, const Pilot *parent, int mode)
	Clears possible exploded weapons. More...

Variables
static Weapon **	wbackLayer = NULL

static Weapon **	wfrontLayer = NULL

static gl_vbo *	weapon_vbo = NULL

static GLfloat *	weapon_vboData = NULL

static size_t	weapon_vboSize = 0

static unsigned int	beam_idgen = 0

Detailed Description

Handles all the weapons in game.

Weapons are what gets created when a pilot shoots. They are based on the outfit that created them.

Definition in file weapon.c.

Macro Definition Documentation

◆ WEAPON_FLAG_DESTROYED

#define WEAPON_FLAG_DESTROYED 1

Definition at line 49 of file weapon.c.

◆ weapon_isFlag

#define weapon_isFlag	(	w,
		f
	)	((w)->flags & (f))

Definition at line 50 of file weapon.c.

◆ weapon_isSmart

#define weapon_isSmart ( w ) (w->think != NULL)

Checks if the weapon w is smart.

Definition at line 37 of file weapon.c.

◆ weapon_rmFlag

#define weapon_rmFlag	(	w,
		f
	)	((w)->flags &= ~(f))

Definition at line 52 of file weapon.c.

◆ weapon_setFlag

#define weapon_setFlag	(	w,
		f
	)	((w)->flags \|= (f))

Definition at line 51 of file weapon.c.

Enumeration Type Documentation

◆ WeaponStatus

enum WeaponStatus

Enumerator
WEAPON_STATUS_LOCKING	Weapon is locking on.
WEAPON_STATUS_OK	Weapon is fine
WEAPON_STATUS_UNJAMMED	Survived jamming
WEAPON_STATUS_JAMMED	Got jammed
WEAPON_STATUS_JAMMED_SLOWED	Jammed and is now slower.

Definition at line 40 of file weapon.c.

Function Documentation

◆ beam_end()

void beam_end	(	const unsigned int	parent,
		unsigned int	beam
	)

Ends a beam weapon.

Parameters

parent	ID of the parent of the beam.
beam	ID of the beam to destroy.

Definition at line 2067 of file weapon.c.

◆ beam_start()

unsigned int beam_start	(	PilotOutfitSlot *	po,
		const double	dir,
		const vec2 *	pos,
		const vec2 *	vel,
		const Pilot *	parent,
		const unsigned int	target,
		int	aim
	)

Starts a beam weapon.

Parameters

po	Outfit slot which spawns the weapon.
dir	Direction of the shooter.
pos	Position of the slot (absolute).
vel	Velocity of the slot (absolute).
parent	Pilot shooter.
target	Target ID that is getting shot.
aim	Whether or not to aim.

Returns: The identifier of the beam weapon.

See also: beam_end

Definition at line 2012 of file weapon.c.

◆ think_beam()

static void think_beam	(	Weapon *	w,
		const double	dt
	)

static

The pseudo-ai of the beam weapons.

Parameters

w	Weapon to do the thinking.
dt	Current delta tick.

Definition at line 439 of file weapon.c.

◆ think_seeker()

static void think_seeker	(	Weapon *	w,
		const double	dt
	)

static

The AI of seeker missiles.

Parameters

w	Weapon to do the thinking.
dt	Current delta tick.

Definition at line 321 of file weapon.c.

◆ weapon_add()

void weapon_add	(	PilotOutfitSlot *	po,
		const double	T,
		const double	dir,
		const vec2 *	pos,
		const vec2 *	vel,
		const Pilot *	parent,
		unsigned int	target,
		double	time,
		int	aim
	)

Creates a new weapon.

Parameters

po	Outfit slot which spawns the weapon.
T	Temperature of the shooter.
dir	Direction of the shooter.
pos	Position of the slot (absolute).
vel	Velocity of the slot (absolute).
parent	Pilot ID of the shooter.
target	Target ID that is getting shot.
time	Expected flight time.
aim	Whether or not to aim.

Definition at line 1953 of file weapon.c.

◆ weapon_aimTurret()

static double weapon_aimTurret	(	const Outfit *	outfit,
		const Pilot *	parent,
		const Pilot *	pilot_target,
		const vec2 *	pos,
		const vec2 *	vel,
		double	dir,
		double	swivel,
		double	time
	)

static

Gets the aim position of a turret weapon.

Parameters

outfit	Weapon outfit.
parent	Parent of the weapon.
pilot_target	Target of the weapon.
pos	Position of the turret.
vel	Velocity of the turret.
dir	Direction facing parent ship and turret.
time	Expected flight time.
swivel	Maximum angle between weapon and straight ahead.

Definition at line 1498 of file weapon.c.

◆ weapon_checkCanHit()

static int weapon_checkCanHit	(	const Weapon *	w,
		const Pilot *	p
	)

static

Checks to see if the weapon can hit the pilot.

Parameters

w	Weapon to check if hits pilot.
p	Pilot to check if is hit by weapon.

Returns: 1 if can be hit, 0 if can't.

Definition at line 882 of file weapon.c.

◆ weapon_clear()

void weapon_clear ( void )

Clears all the weapons, does NOT free the layers.

Definition at line 2161 of file weapon.c.

◆ weapon_computeTimes()

static double weapon_computeTimes	(	double	rdir,
		double	rx,
		double	ry,
		double	dvx,
		double	dvy,
		double	pxv,
		double	vmin,
		double	acc,
		double *	tt
	)

static

Computes precisely interception times for propelled weapons (rockets).

Parameters

	rdir	tried shooting angle.
	rx	Relative position x.
	ry	Relative position y.
	dvx	Relative velocity x.
	dvy	Relative velocity y.
	pxv	Cross product between relative position and relative velocity
	vmin	min ammo velocity.
	acc	ammo acceleration.
[out]	tt	Time for the target to reach the interception point.

Definition at line 1616 of file weapon.c.

◆ weapon_create()

static Weapon * weapon_create	(	PilotOutfitSlot *	po,
		double	T,
		const double	dir,
		const vec2 *	pos,
		const vec2 *	vel,
		const Pilot *	parent,
		const unsigned int	target,
		double	time,
		int	aim
	)

static

Creates a new weapon.

Parameters

po	Outfit slot which spawned the weapon.
T	temperature of the shooter.
dir	Direction the shooter is facing.
pos	Position of the slot (absolute).
vel	Velocity of the slot (absolute).
parent	Shooter.
target	Target ID of the shooter.
time	Expected flight time.
aim	Whether or not to aim.

Returns: A pointer to the newly created weapon.

< Needs a mass.

Definition at line 1836 of file weapon.c.

◆ weapon_createAmmo()

static void weapon_createAmmo	(	Weapon *	w,
		const Outfit *	outfit,
		double	T,
		const double	dir,
		const vec2 *	pos,
		const vec2 *	vel,
		const Pilot *	parent,
		double	time,
		int	aim
	)

static

Creates the ammo specific properties of a weapon.

Parameters

w	Weapon to create ammo specific properties of.
outfit	Outfit which spawned the weapon.
T	temperature of the shooter.
dir	Direction the shooter is facing.
pos	Position of the slot (absolute).
vel	Velocity of the slot (absolute).
parent	Shooter.
time	Expected flight time.
aim	Whether or not to aim.

Definition at line 1729 of file weapon.c.

◆ weapon_createBolt()

static void weapon_createBolt	(	Weapon *	w,
		const Outfit *	outfit,
		double	T,
		const double	dir,
		const vec2 *	pos,
		const vec2 *	vel,
		const Pilot *	parent,
		double	time,
		int	aim
	)

static

Creates the bolt specific properties of a weapon.

Parameters

w	Weapon to create bolt specific properties of.
outfit	Outfit which spawned the weapon.
T	temperature of the shooter.
dir	Direction the shooter is facing.
pos	Position of the slot (absolute).
vel	Velocity of the slot (absolute).
parent	Shooter.
time	Expected flight time.
aim	Whether or not to aim.

Definition at line 1649 of file weapon.c.

◆ weapon_destroy()

static void weapon_destroy ( Weapon * w )

static

Destroys a weapon.

Parameters

w	Weapon to destroy.

Definition at line 2109 of file weapon.c.

◆ weapon_exit()

void weapon_exit ( void )

Destroys all the weapons and frees it all.

Definition at line 2179 of file weapon.c.

◆ weapon_explode()

void weapon_explode	(	double	x,
		double	y,
		double	radius,
		int	dtype,
		double	damage,
		const Pilot *	parent,
		int	mode
	)

Clears possible exploded weapons.

Definition at line 2199 of file weapon.c.

◆ weapon_explodeLayer()

static void weapon_explodeLayer	(	WeaponLayer	layer,
		double	x,
		double	y,
		double	radius,
		const Pilot *	parent,
		int	mode
	)

static

Explodes all the things on a layer.

Definition at line 2212 of file weapon.c.

◆ weapon_free()

static void weapon_free ( Weapon * w )

static

Frees the weapon.

Parameters

w	Weapon to free.

Definition at line 2120 of file weapon.c.

◆ weapon_hit()

static void weapon_hit	(	Weapon *	w,
		Pilot *	p,
		vec2 *	pos
	)

static

Weapon hit the pilot.

Parameters

w	Weapon involved in the collision.
p	Pilot that got hit.
pos	Position of the hit.

Definition at line 1270 of file weapon.c.

◆ weapon_hitAI()

void weapon_hitAI	(	Pilot *	p,
		const Pilot *	shooter,
		double	dmg
	)

Informs the AI if needed that it's been hit.

Parameters

p	Pilot being hit.
shooter	Pilot that shot.
dmg	Damage done to p.

Definition at line 1227 of file weapon.c.

◆ weapon_hitAst()

static void weapon_hitAst	(	Weapon *	w,
		Asteroid *	a,
		WeaponLayer	layer,
		vec2 *	pos
	)

static

Weapon hit an asteroid.

Parameters

w	Weapon involved in the collision.
a	Asteroid that got hit.
layer	Layer to which the weapon belongs.
pos	Position of the hit.

Definition at line 1354 of file weapon.c.

◆ weapon_hitAstBeam()

static void weapon_hitAstBeam	(	Weapon *	w,
		Asteroid *	a,
		WeaponLayer	layer,
		vec2	pos[2],
		const double	dt
	)

static

Weapon hit an asteroid.

Parameters

w	Weapon involved in the collision.
a	Asteroid that got hit.
layer	Layer to which the weapon belongs.
pos	Position of the hit.
dt	Current delta tick.

Definition at line 1453 of file weapon.c.

◆ weapon_hitBeam()

static void weapon_hitBeam	(	Weapon *	w,
		Pilot *	p,
		WeaponLayer	layer,
		vec2	pos[2],
		const double	dt
	)

static

Weapon hit the pilot.

Parameters

w	Weapon involved in the collision.
p	Pilot that got hit.
layer	Layer to which the weapon belongs.
pos	Position of the hit.
dt	Current delta tick.

Definition at line 1398 of file weapon.c.

◆ weapon_init()

void weapon_init ( void )

Initializes the weapon stuff.

Definition at line 157 of file weapon.c.

◆ weapon_minimap()

void weapon_minimap	(	const double	res,
		const double	w,
		const double	h,
		const RadarShape	shape,
		double	alpha
	)

Draws the minimap weapons (used in player.c).

Parameters

res	Minimap resolution.
w	Width of minimap.
h	Height of minimap.
shape	Shape of the minimap.
alpha	Alpha to draw points at.

Definition at line 172 of file weapon.c.

◆ weapon_miss()

static void weapon_miss ( Weapon * w )

static

Weapon missed and is due to be destroyed.

Parameters

w	Weapon that missed.

Definition at line 1323 of file weapon.c.

◆ weapon_render()

static void weapon_render	(	Weapon *	w,
		const double	dt
	)

static

Renders an individual weapon.

Parameters

w	Weapon to render.
dt	Current delta tick.

Definition at line 792 of file weapon.c.

◆ weapon_renderBeam()

static void weapon_renderBeam	(	Weapon *	w,
		const double	dt
	)

static

Definition at line 736 of file weapon.c.

◆ weapon_sample_trail()

static void weapon_sample_trail ( Weapon * w )

static

Updates the animated trail for a weapon.

Definition at line 1194 of file weapon.c.

◆ weapon_setThrust()

static void weapon_setThrust	(	Weapon *	w,
		double	thrust
	)

static

Sets the weapon's thrust.

Definition at line 302 of file weapon.c.

◆ weapon_setTurn()

static void weapon_setTurn	(	Weapon *	w,
		double	turn
	)

static

Sets the weapon's turn.

Definition at line 310 of file weapon.c.

◆ weapon_update()

static void weapon_update	(	Weapon *	w,
		const double	dt,
		WeaponLayer	layer
	)

static

Updates an individual weapon.

Parameters

w	Weapon to update.
dt	Current delta tick.
layer	Layer to which the weapon belongs.

Definition at line 951 of file weapon.c.

◆ weapons_purgeLayer()

static void weapons_purgeLayer ( Weapon ** layer )

static

Purges weapons marked for deletion.

Parameters

layer Layer to purge weapons from.

Definition at line 698 of file weapon.c.

◆ weapons_render()

void weapons_render	(	const WeaponLayer	layer,
		const double	dt
	)

Renders all the weapons in a layer.

Parameters

layer	Layer to render.
dt	Current delta tick.

Definition at line 715 of file weapon.c.

◆ weapons_update()

void weapons_update ( const double dt )

Updates all the weapon layers.

Parameters

dt	Current delta tick.

Definition at line 548 of file weapon.c.

◆ weapons_updateLayer()

static void weapons_updateLayer	(	const double	dt,
		const WeaponLayer	layer
	)

static

Updates all the weapons in the layer.

Parameters

dt	Current delta tick.
layer	Layer to update.

Definition at line 565 of file weapon.c.

Variable Documentation

◆ beam_idgen

unsigned int beam_idgen = 0

static

Beam identifier generator.

Definition at line 105 of file weapon.c.

◆ wbackLayer

Weapon** wbackLayer = NULL

static

behind pilots

Definition at line 96 of file weapon.c.

◆ weapon_vbo

gl_vbo* weapon_vbo = NULL

static

Weapon VBO.

Definition at line 100 of file weapon.c.

◆ weapon_vboData

GLfloat* weapon_vboData = NULL

static

Data of weapon VBO.

Definition at line 101 of file weapon.c.

◆ weapon_vboSize

size_t weapon_vboSize = 0

static

Size of the VBO.

Definition at line 102 of file weapon.c.

◆ wfrontLayer

Weapon** wfrontLayer = NULL

static

in front of pilots, behind player

Definition at line 97 of file weapon.c.

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ WEAPON_FLAG_DESTROYED

◆ weapon_isFlag

◆ weapon_isSmart

◆ weapon_rmFlag

◆ weapon_setFlag

Enumeration Type Documentation

◆ WeaponStatus

Function Documentation

◆ beam_end()

◆ beam_start()

◆ think_beam()

◆ think_seeker()

◆ weapon_add()

◆ weapon_aimTurret()

◆ weapon_checkCanHit()

◆ weapon_clear()

◆ weapon_computeTimes()

◆ weapon_create()

◆ weapon_createAmmo()

◆ weapon_createBolt()

◆ weapon_destroy()

◆ weapon_exit()

◆ weapon_explode()

◆ weapon_explodeLayer()

◆ weapon_free()

◆ weapon_hit()

◆ weapon_hitAI()

◆ weapon_hitAst()

◆ weapon_hitAstBeam()

◆ weapon_hitBeam()

◆ weapon_init()

◆ weapon_minimap()

◆ weapon_miss()

◆ weapon_render()

◆ weapon_renderBeam()

◆ weapon_sample_trail()

◆ weapon_setThrust()

◆ weapon_setTurn()

◆ weapon_update()

◆ weapons_purgeLayer()

◆ weapons_render()

◆ weapons_update()

◆ weapons_updateLayer()

Variable Documentation

◆ beam_idgen

◆ wbackLayer

◆ weapon_vbo

◆ weapon_vboData

◆ weapon_vboSize

◆ wfrontLayer