/**
* @brief The pseudo-ai of the beam weapons.
*
* @param w Weapon to do the thinking.
* @param dt Current delta tick.
*/
static void think_beam( Weapon* w, const double dt )
{
(void)dt;
Pilot *p, *t;
double diff;
Vector2d v;
/* Get pilot, if pilot is dead beam is destroyed. */
p = pilot_get(w->parent);
if (p==NULL) {
w->timer = -1.; /* Hack to make it get destroyed next update. */
return;
}
/* Check if pilot has enough energy left to keep beam active. */
p->energy -= dt*w->outfit->u.bem.energy;
if (p->energy < 0.) {
p->energy = 0.;
w->timer = -1;
return;
}
/* Use mount position. */
pilot_getMount( p, w->mount, &v );
w->solid->pos.x = p->solid->pos.x + v.x;
w->solid->pos.y = p->solid->pos.y + v.y;
/* Handle aiming. */
switch (w->outfit->type) {
case OUTFIT_TYPE_BEAM:
w->solid->dir = p->solid->dir;
break;
case OUTFIT_TYPE_TURRET_BEAM:
/* Get target, if target is dead beam stops moving. */
t = pilot_get(w->target);
if (t==NULL) {
weapon_setTurn( w, 0. );
return;
}
if (w->target == w->parent) /* Invalid target, tries to follow shooter. */
diff = angle_diff(w->solid->dir, p->solid->dir);
else
diff = angle_diff(w->solid->dir, /* Get angle to target pos */
vect_angle(&w->solid->pos, &t->solid->pos));
weapon_setTurn( w, CLAMP( -w->outfit->u.bem.turn, w->outfit->u.bem.turn,
10 * diff * w->outfit->u.bem.turn ));
break;
default:
return;
}
}
/**
* @brief Updates the camera.
*
* @param dt Current delta tick.
*/
void cam_update( double dt )
{
Pilot *p;
double dx, dy;
/* Calculate differential. */
dx = old_X;
dy = old_Y;
/* Going to position. */
p = NULL;
if (camera_fly) {
if (camera_followpilot != 0) {
p = pilot_get( camera_followpilot );
if (p == NULL) {
camera_followpilot = 0;
camera_fly = 0;
}
else {
cam_updateFly( p->solid->pos.x, p->solid->pos.y, dt );
cam_updatePilotZoom( p, NULL, dt );
}
}
else
cam_updateFly( target_X, target_Y, dt );
}
else {
/* Track pilot. */
if (camera_followpilot != 0) {
p = pilot_get( camera_followpilot );
if (p == NULL)
camera_followpilot = 0;
else
cam_updatePilot( p, dt );
}
}
/* Update manual zoom. */
if (conf.zoom_manual)
cam_updateManualZoom( dt );
/* Set the sound. */
if ((p==NULL) || !conf.snd_pilotrel) {
dx = dt*(dx-camera_X);
dy = dt*(dy-camera_Y);
sound_updateListener( CAMERA_DIR, camera_X, camera_Y, dx, dy );
}
else {
sound_updateListener( p->solid->dir,
p->solid->pos.x, p->solid->pos.y,
p->solid->vel.x, p->solid->vel.y );
}
}
/**
* @brief Creates an escort.
*
* @param p Parent of the escort (who he's guarding).
* @param ship Name of the ship escort should have.
* @param pos Position to create escort at.
* @param vel Velocity to create escort with.
* @param dir Direction to face.
* @param type Type of escort.
* @param add Whether or not to add it to the escort list.
* @return The ID of the escort on success.
*/
unsigned int escort_create( Pilot *p, char *ship,
Vector2d *pos, Vector2d *vel, double dir,
EscortType_t type, int add )
{
Ship *s;
Pilot *pe;
unsigned int e;
PilotFlags f;
unsigned int parent;
/* Get important stuff. */
parent = p->id;
s = ship_get(ship);
/* Set flags. */
pilot_clearFlagsRaw( f );
pilot_setFlagRaw( f, PILOT_NOJUMP );
if (type == ESCORT_TYPE_BAY)
pilot_setFlagRaw( f, PILOT_CARRIED );
/* Create the pilot. */
e = pilot_create( s, NULL, p->faction, "escort", dir, pos, vel, f );
pe = pilot_get(e);
pe->parent = parent;
/* Add to escort list. */
if (add != 0)
escort_addList( p, ship, type, e, 1 );
return e;
}
/**
* @brief Changes the pilot's AI.
*
* @usage p:changeAI( "empire" ) -- set the pilot to use the Empire AI
*
* @luafunc changeAI( p, newai )
*/
static int pilotL_changeAI( lua_State *L )
{
LuaPilot *lp;
Pilot *p;
const char *str;
int ret;
/* Get the pilot. */
lp = luaL_checkpilot(L,1);
p = pilot_get(lp->pilot);
if (p==NULL) {
NLUA_ERROR(L,"Pilot is invalid.");
return 0;
}
/* Get parameters. */
str = luaL_checkstring(L,2);
/* Get rid of current AI. */
ai_destroy(p);
/* Create the new AI. */
ret = ai_pinit( p, str );
lua_pushboolean(L, ret);
return 1;
}
/**
* @brief Hooks the function to a specific pilot.
*
* You can hook to different actions. Curently hook system only supports:<br />
* - "death" : triggered when pilot dies.<br />
* - "board" : triggered when pilot is boarded.<br />
* - "disable" : triggered when pilot is disabled.<br />
* - "jump" : triggered when pilot jumps to hyperspace.<br />
* - "hail" : triggered when pilot is hailed.<br />
* - "attacked" : triggered when the pilot is attacked in manual control <br />
* - "idle" : triggered when the pilot becomes idle in manual control <br />
*
* @luaparam pilot Pilot identifier to hook.
* @luaparam type One of the supported hook types.
* @luaparam funcname Name of function to run when hook is triggered.
* @luareturn Hook identifier.
* @luafunc pilot( pilot, type, funcname )
*/
static int hook_pilot( lua_State *L )
{
unsigned int h;
LuaPilot *p;
int type;
const char *hook_type;
/* Parameters. */
p = luaL_checkpilot(L,1);
hook_type = luaL_checkstring(L,2);
/* Check to see if hook_type is valid */
if (strcmp(hook_type,"death")==0) type = PILOT_HOOK_DEATH;
else if (strcmp(hook_type,"board")==0) type = PILOT_HOOK_BOARD;
else if (strcmp(hook_type,"disable")==0) type = PILOT_HOOK_DISABLE;
else if (strcmp(hook_type,"jump")==0) type = PILOT_HOOK_JUMP;
else if (strcmp(hook_type,"hail")==0) type = PILOT_HOOK_HAIL;
else if (strcmp(hook_type,"attacked")==0) type = PILOT_HOOK_ATTACKED;
else if (strcmp(hook_type,"idle")==0) type = PILOT_HOOK_IDLE;
else { /* hook_type not valid */
NLUA_DEBUG("Invalid pilot hook type: '%s'", hook_type);
return 0;
}
/* actually add the hook */
h = hook_generic( L, hook_type, 3 );
pilot_addHook( pilot_get(p->pilot), type, h );
return 0;
}
/**
* @brief Throws cargo out in space graphically.
*
* @param pilot ID of the pilot throwing the stuff out
* @param com Commodity to throw out.
* @param quantity Quantity thrown out.
*/
void commodity_Jettison( int pilot, Commodity* com, int quantity )
{
(void)com;
int i;
Pilot* p;
int n, effect;
double px,py, bvx, bvy, r,a, vx,vy;
p = pilot_get( pilot );
n = MAX( 1, RNG(quantity/10, quantity/5) );
px = p->solid->pos.x;
py = p->solid->pos.y;
bvx = p->solid->vel.x;
bvy = p->solid->vel.y;
for (i=0; i<n; i++) {
effect = spfx_get("cargo");
/* Radial distribution gives much nicer results */
r = RNGF()*25 - 12.5;
a = 2. * M_PI * RNGF();
vx = bvx + r*cos(a);
vy = bvy + r*sin(a);
/* Add the cargo effect */
spfx_add( effect, px, py, vx, vy, SPFX_LAYER_BACK );
}
}
/**
* @brief Has a pilot attempt to board another pilot.
*
* @param p Pilot doing the boarding.
* @return 1 if target was boarded.
*/
int pilot_board( Pilot *p )
{
Pilot *target;
/* Make sure target is sane. */
target = pilot_get(p->target);
if (target == NULL) {
DEBUG("NO TARGET");
return 0;
}
/* Check if can board. */
if (!pilot_isDisabled(target))
return 0;
else if (vect_dist(&p->solid->pos, &target->solid->pos) >
target->ship->gfx_space->sw * PILOT_SIZE_APROX )
return 0;
else if ((pow2(VX(p->solid->vel)-VX(target->solid->vel)) +
pow2(VY(p->solid->vel)-VY(target->solid->vel))) >
(double)pow2(MAX_HYPERSPACE_VEL))
return 0;
else if (pilot_isFlag(target,PILOT_BOARDED))
return 0;
/* Set the boarding flag. */
pilot_setFlag(target, PILOT_BOARDED);
pilot_setFlag(p, PILOT_BOARDING);
/* Set time it takes to board. */
p->ptimer = 3.;
return 1;
}
/**
* @brief Updates the boarding window fields.
*
* @param wdw Window to update.
*/
static void board_update( unsigned int wdw )
{
int i, j;
char str[PATH_MAX];
char cred[10];
Pilot* p;
p = pilot_get(player->target);
j = 0;
/* Credits. */
credits2str( cred, p->credits, 2 );
j += snprintf( &str[j], PATH_MAX-j, "%s\n", cred );
/* Commodities. */
if (p->ncommodities==0)
j += snprintf( &str[j], PATH_MAX-j, "none\n" );
else {
for (i=0; i<p->ncommodities; i++)
j += snprintf( &str[j], PATH_MAX-j,
"%d %s\n",
p->commodities[i].quantity, p->commodities[i].commodity->name );
}
/* Fuel. */
if (p->fuel <= 0.)
j += snprintf( &str[j], PATH_MAX-j, "none\n" );
else
j += snprintf( &str[j], PATH_MAX-j, "%.0f Units\n", p->fuel );
window_modifyText( wdw, "txtData", str );
}
/**
* @brief Checks to see if the pilot can steal from it's target.
*
* @param p Pilot stealing from it's target.
* @return 0 if successful, 1 if fails, -1 if fails and kills target.
*/
static int board_trySteal( Pilot *p )
{
Pilot *target;
/* Get the target. */
target = pilot_get(p->target);
if (target == NULL)
return 1;
/* See if was successful. */
if (RNGF() > (0.5 *
(10. + (double)target->ship->crew)/(10. + (double)p->ship->crew)))
return 0;
/* Triggered self destruct. */
if (RNGF() < 0.4) {
/* Don't actually kill. */
target->armour = 1.;
/* This will make the boarding ship take the possible faction hit. */
pilot_hit( target, NULL, p->id, DAMAGE_TYPE_KINETIC, 100. );
/* Return ship dead. */
return -1;
}
return 1;
}
/**
* @brief Sets the target to follow.
*/
void cam_setTargetPilot( unsigned int follow, int soft_over )
{
Pilot *p;
double dir, x, y;
/* Set the target. */
camera_followpilot = follow;
dir = CAMERA_DIR;
/* Set camera if necessary. */
if (!soft_over) {
if (follow != 0) {
p = pilot_get( follow );
if (p != NULL) {
dir = p->solid->dir;
x = p->solid->pos.x;
y = p->solid->pos.y;
camera_X = x;
camera_Y = y;
old_X = x;
old_Y = y;
}
}
camera_fly = 0;
}
else {
old_X = camera_X;
old_Y = camera_Y;
camera_fly = 1;
camera_flyspeed = (double) soft_over;
}
sound_updateListener( dir, camera_X, camera_Y, 0., 0. );
}
/**
* @brief Adds an outfit to a pilot.
*
* @usage added = p:addOutfit( "Laser Cannon", 5 ) -- Adds 5 laser cannons to p
*
* @luaparam p Pilot to add outfit to.
* @luaparam outfit Name of the outfit to add.
* @luaparam q Amount to add.
* @luareturn The amount actually added.
* @luafunc addOutfit( p, outfit, q )
*/
static int pilotL_addOutfit( lua_State *L )
{
LuaPilot *lp;
Pilot *p;
const char *outfit;
int q, n;
Outfit *o;
/* Get the pilot. */
lp = luaL_checkpilot(L,1);
p = pilot_get(lp->pilot);
if (p==NULL) {
NLUA_ERROR(L,"Pilot is invalid.");
return 0;
}
/* Get parameters. */
outfit = luaL_checkstring(L,2);
q = luaL_checkint(L,3);
/* Get the outfit. */
o = outfit_get( outfit );
if (o == NULL)
return 0;
/* Add outfit. */
n = pilot_addOutfit( p, o, q );
lua_pushnumber(L,n);
return 1;
}
/**
* @brief Attempt to steal the boarded ship's cargo.
*
* @param wdw Window triggering the function.
* @param str Unused.
*/
static void board_stealCargo( unsigned int wdw, char* str )
{
(void)str;
int q;
Pilot* p;
p = pilot_get(player->target);
if (p->ncommodities==0) { /* no cargo */
player_message("The ship has no cargo.");
return;
}
else if (pilot_cargoFree(player) <= 0) {
player_message("You have no room for cargo.");
return;
}
if (board_fail(wdw)) return;
/** steal as much as possible until full - @todo let player choose */
q = 1;
while ((p->ncommodities > 0) && (q!=0)) {
q = pilot_addCargo( player, p->commodities[0].commodity,
p->commodities[0].quantity );
pilot_rmCargo( p, p->commodities[0].commodity, q );
}
board_update( wdw );
player_message("You manage to steal the ship's cargo.");
}
/**
* @brief Attempt to steal the boarded ship's fuel.
*
* @param wdw Window triggering the function.
* @param str Unused.
*/
static void board_stealFuel( unsigned int wdw, char* str )
{
(void)str;
Pilot* p;
p = pilot_get(player->target);
if (p->fuel <= 0.) { /* no fuel. */
player_message("The ship has no fuel.");
return;
}
else if (player->fuel == player->fuel_max) {
player_message("Your ship is at maximum fuel capacity.");
return;
}
if (board_fail(wdw)) return;
/* Steal fuel. */
player->fuel += p->fuel;
p->fuel = 0.;
/* Make sure doesn't overflow. */
if (player->fuel > player->fuel_max) {
p->fuel = player->fuel_max - player->fuel;
player->fuel = player->fuel_max;
}
board_update( wdw );
player_message("You manage to steal the ship's fuel.");
}
/**
* @brief Sets the pilot's faction.
*
* @usage p:setFaction( "Empire" )
* @usage p:setFaction( faction.get( "Dvaered" ) )
*
* @luaparam p Pilot to change faction of.
* @luaparam faction Faction to set by name or faction.
* @luafunc setFaction( faction )
*/
static int pilotL_setFaction( lua_State *L )
{
Pilot *p;
LuaPilot *lp;
LuaFaction *f;
int fid;
const char *faction;
/* Parse parameters. */
lp = luaL_checkpilot(L,1);
if (lua_isstring(L,2)) {
faction = lua_tostring(L,2);
fid = faction_get(faction);
}
else if (lua_isfaction(L,2)) {
f = lua_tofaction(L,2);
fid = f->f;
}
else NLUA_INVALID_PARAMETER();
/* Get pilot/faction. */
p = pilot_get(lp->pilot);
if (p==NULL) {
NLUA_ERROR(L,"Pilot is invalid.");
return 0;
}
/* Set the new faction. */
p->faction = fid;
return 0;
}
/**
* @brief Runs an escort command on all of a pilot's escorts.
*
* @param parent Pilot who is giving orders.
* @param cmd Order to give.
* @param param Parameter for order.
* @return 0 on success, 1 if no orders given.
*/
static int escort_command( Pilot *parent, int cmd, int param )
{
int i, n;
lua_State *L;
Pilot *e;
char *buf;
if (parent->nescorts == 0)
return 1;
n = 0;
for (i=0; i<parent->nescorts; i++) {
e = pilot_get( parent->escorts[i] );
if (e == NULL) /* Most likely died. */
continue;
/* Check if command makes sense. */
if ((cmd == ESCORT_RETURN) && !pilot_isFlag(e, PILOT_CARRIED))
continue;
n++; /* Amount of escorts left. */
/* Prepare ai. */
ai_setPilot( e );
/* Set up stack. */
L = e->ai->L;
switch (cmd) {
case ESCORT_ATTACK:
buf = "e_attack";
break;
case ESCORT_HOLD:
buf = "e_hold";
break;
case ESCORT_RETURN:
buf = "e_return";
break;
case ESCORT_CLEAR:
buf = "e_clear";
break;
}
lua_getglobal(L, buf);
if (param >= 0)
lua_pushnumber(L, param);
/* Run command. */
if (lua_pcall(L, (param >= 0) ? 1 : 0, 0, 0))
WARN("Pilot '%s' ai -> '%s': %s", e->name,
buf, lua_tostring(L,-1));
}
return !n;
}
/**
* @brief Sends a message to the target or player if no target is passed.
*
* @usage p:comm( "How are you doing?" ) -- Messages the player
* @usage p:comm( "You got this?", true ) -- Messages the player ignoring interference
* @usage p:comm( target, "Heya!" ) -- Messages target
* @usage p:comm( target, "Got this?", true ) -- Messages target ignoring interference
*
* @luaparam p Pilot to message the player.
* @ulaparam target Target to send message to.
* @luaparam msg Message to send.
* @luafunc comm( p, target, msg )
*/
static int pilotL_comm( lua_State *L )
{
Pilot *p, *t;
LuaPilot *lp, *target;
const char *msg;
int ignore_int;
/* Parse parameters. */
lp = luaL_checkpilot(L,1);
if (lua_isstring(L,2)) {
target = NULL;
msg = luaL_checkstring(L,2);
ignore_int = lua_toboolean(L,3);
}
else {
target = luaL_checkpilot(L,2);
msg = luaL_checkstring(L,3);
ignore_int = lua_toboolean(L,4);
}
/* Check to see if pilot is valid. */
p = pilot_get(lp->pilot);
if (p == NULL) {
NLUA_ERROR(L,"Pilot param 1 not found in pilot stack!");
return 0;
}
if (target == NULL)
t = player;
else {
t = pilot_get(target->pilot);
if (t == NULL) {
NLUA_ERROR(L,"Pilot param 2 not found in pilot stack!");
return 0;
}
}
/* Broadcast message. */
pilot_message( p, t->id, msg, ignore_int );
return 0;
}
/**
* @brief Checks to see if pilot is still alive.
*
* @usage if p:alive() then -- Pilot is still alive
*
* @luaparam p Pilot to check to see if is still alive.
* @luareturn true if pilot is still alive.
* @luafunc alive( p )
*/
static int pilotL_alive( lua_State *L )
{
LuaPilot *lp;
Pilot *p;
/* Parse parameters. */
lp = luaL_checkpilot(L,1);
p = pilot_get( lp->pilot );
/* Check if is alive. */
lua_pushboolean(L, p!=NULL);
return 1;
}
/**
* @brief Opens the communication dialogue with a pilot.
*
* @param pilot Pilot to communicate with.
* @return 0 on success.
*/
int comm_openPilot( unsigned int pilot )
{
const char *msg;
unsigned int wid;
/* Get the pilot. */
comm_pilot = pilot_get( pilot );
if (comm_pilot == NULL)
return -1;
/* Must not be disabled. */
if (pilot_isFlag(comm_pilot, PILOT_DISABLED)) {
player_message("%s does not respond.", comm_pilot->name);
return 0;
}
/* Check to see if pilot wants to communicate. */
msg = comm_getString( "comm_no" );
if (msg != NULL) {
player_message( msg );
return 0;
}
/* Set up for the comm_get* functions. */
ai_setPilot( comm_pilot );
/* Create the generic comm window. */
wid = comm_open( ship_loadCommGFX( comm_pilot->ship ),
comm_pilot->faction,
pilot_isHostile(comm_pilot) ? -1 : pilot_isFriendly(comm_pilot) ? 1 : 0,
pilot_isFlag(comm_pilot, PILOT_BRIBED),
comm_pilot->name );
/* Add special buttons. */
window_addButton( wid, -20, 20 + BUTTON_HEIGHT + 20,
BUTTON_WIDTH, BUTTON_HEIGHT, "btnGreet", "Greet", NULL );
if (!pilot_isFlag(comm_pilot, PILOT_BRIBED) && /* Not already bribed. */
((faction_getPlayer( comm_pilot->faction ) < 0) || /* Hostile. */
pilot_isHostile(comm_pilot)))
window_addButton( wid, -20, 20 + 2*BUTTON_HEIGHT + 40,
BUTTON_WIDTH, BUTTON_HEIGHT, "btnBribe", "Bribe", comm_bribePilot );
else
window_addButton( wid, -20, 20 + 2*BUTTON_HEIGHT + 40,
BUTTON_WIDTH, BUTTON_HEIGHT, "btnRequest",
"Refuel", comm_requestFuel );
/* Run hooks if needed. */
pilot_runHook( comm_pilot, PILOT_HOOK_HAIL );
return 0;
}
/**
* @brief Destroys a weapon.
*
* @param w Weapon to destroy.
* @param layer Layer to which the weapon belongs.
*/
static void weapon_destroy( Weapon* w, WeaponLayer layer )
{
int i;
Weapon** wlayer;
int *nlayer;
Pilot *pilot_target;
/* Decrement target lockons if needed */
if (outfit_isSeeker(w->outfit)) {
pilot_target = pilot_get( w->target );
if (pilot_target != NULL)
pilot_target->lockons--;
}
/* Stop playing sound if beam weapon. */
if (outfit_isBeam(w->outfit)) {
sound_stop( w->voice );
sound_playPos(w->outfit->u.bem.sound_off,
w->solid->pos.x,
w->solid->pos.y,
w->solid->vel.x,
w->solid->vel.y);
}
switch (layer) {
case WEAPON_LAYER_BG:
wlayer = wbackLayer;
nlayer = &nwbackLayer;
break;
case WEAPON_LAYER_FG:
wlayer = wfrontLayer;
nlayer = &nwfrontLayer;
break;
default:
WARN("Unknown weapon layer!");
}
for (i=0; (wlayer[i] != w) && (i < *nlayer); i++); /* get to the curent position */
if (i >= *nlayer) {
WARN("Trying to destroy weapon not found in stack!");
return;
}
weapon_free(wlayer[i]);
wlayer[i] = NULL;
(*nlayer)--;
for ( ; i < (*nlayer); i++)
wlayer[i] = wlayer[i+1];
}
/**
* @brief Creates an escort.
*
* @param parent Parent of the escort (who he's guarding).
* @param ship Name of the ship escort should have.
* @param pos Position to create escort at.
* @param vel Velocity to create escort with.
* @param carried Does escort come out of the parent?
*/
int escort_create( unsigned int parent, char *ship,
Vector2d *pos, Vector2d *vel, int carried )
{
Ship *s;
Pilot *p, *pe;
char buf[16];
unsigned int e, f;
double dir;
/* Get important stuff. */
p = pilot_get(parent);
s = ship_get(ship);
snprintf(buf, 16, "escort*%u", parent);
/* Set flags. */
f = PILOT_ESCORT;
if (carried) f |= PILOT_CARRIED;
/* Get the direction. */
if (carried) dir = p->solid->dir;
else dir = 0.;
/* Create the pilot. */
e = pilot_create( s, NULL, p->faction, buf, dir, pos, vel, f );
pe = pilot_get(e);
pe->parent = parent;
/* Add to escort list. */
p->nescorts++;
if (p->nescorts == 1)
p->escorts = malloc(sizeof(unsigned int) * ESCORT_PREALLOC);
else if (p->nescorts > ESCORT_PREALLOC)
p->escorts = realloc( p->escorts, sizeof(unsigned int) * p->nescorts );
p->escorts[p->nescorts-1] = e;
return 0;
}
/**
* @brief Have a pilot order it's escorts to attack it's target.
*
* @param parent Pilot giving the order.
*/
int escorts_attack( Pilot *parent )
{
int ret;
Pilot *t;
ret = 1;
if (parent->target != parent->id)
ret = escort_command( parent, ESCORT_ATTACK, parent->target );
if ((ret == 0) && (parent == player)) {
t = pilot_get(parent->target);
if (t != NULL)
player_message("Escorts: Attacking %s.", t->name);
}
return ret;
}
/**
* @brief Plays a sound based on position.
*
* @param sound Sound to play.
* @param px X position of the sound.
* @param py Y position of the sound.
* @param vx X velocity of the sound.
* @param vy Y velocity of the sound.
* @return Voice identifier on success.
*/
int sound_playPos( int sound, double px, double py, double vx, double vy )
{
alVoice *v;
alSound *s;
Pilot *p;
double cx, cy, dist;
int target;
if (sound_disabled)
return 0;
if ((sound < 0) || (sound >= sound_nlist))
return -1;
target = cam_getTarget();
/* Following a pilot. */
p = pilot_get(target);
if (target && (p != NULL)) {
if (!pilot_inRange( p, px, py ))
return 0;
}
/* Set to a position. */
else {
cam_getPos(&cx, &cy);
dist = pow2(px - cx) + pow2(py - cy);
if (dist > pilot_sensorRange())
return 0;
}
/* Gets a new voice. */
v = voice_new();
/* Get the sound. */
s = &sound_list[sound];
/* Try to play the sound. */
if (sound_sys_playPos( v, s, px, py, vx, vy ))
return -1;
/* Actually add the voice to the list. */
v->state = VOICE_PLAYING;
v->id = ++voice_genid;
voice_add(v);
return v->id;
}
/**
* @brief Hooks the function to a specific pilot.
*
* You can hook to different actions. Curently hook system only supports:<br />
* <ul>
* <li> "death" : triggered when pilot dies (before marked as dead). <br />
* <li> "exploded" : triggered when pilot has died and the final explosion has begun. <br />
* <li> "board" : triggered when pilot is boarded.<br />
* <li> "disable" : triggered when pilot is disabled (with disable set).<br />
* <li> "jump" : triggered when pilot jumps to hyperspace (before he actually jumps out).<br />
* <li> "hail" : triggered when pilot is hailed.<br />
* <li> "land" : triggered when pilot is landing (right when starting land descent).<br />
* <li> "attacked" : triggered when the pilot is attacked. <br />
* <li> "idle" : triggered when the pilot becomes idle in manual control.<br />
* </ul>
* <br />
* If you pass nil as pilot, it will set it as a global hook that will jump for all pilots.<br />
* <br />
* DO NOT DO UNSAFE THINGS IN PILOT HOOKS. THIS MEANS STUFF LIKE player.teleport(). IF YOU HAVE DOUBTS USE A "safe" HOOK.<br />
* <br />
* These hooks all pass the pilot triggering the hook as a parameter, so they should have the structure of:<br />
* <br />
* function my_hook( pilot, arg )<br />
* end<br />
* <br />
* The combat hooks also pass the pilot acting on it, so for example the pilot
* that disabled, attacked or killed the selected pilot. They have the
* following format:<br />
* <br />
* function combat_hook( pilot, attacker, arg )<br />
* end<br />
* <br />
* Please note that in the case of disable or death hook the attacker may be nil
* indicating that it was killed by other means like for example the shockwave
* of a dying ship or nebula volatility.
*
* @luaparam pilot Pilot identifier to hook (or nil for all).
* @luaparam type One of the supported hook types.
* @luaparam funcname Name of function to run when hook is triggered.
* @luaparam arg Argument to pass to hook.
* @luareturn Hook identifier.
* @luafunc pilot( pilot, type, funcname, arg )
*/
static int hook_pilot( lua_State *L )
{
unsigned int h;
LuaPilot *p;
int type;
const char *hook_type;
char buf[ PATH_MAX ];
/* Parameters. */
if (lua_ispilot(L,1))
p = luaL_checkpilot(L,1);
else if (lua_isnil(L,1))
p = NULL;
else {
NLUA_ERROR(L, "Invalid parameter #1 for hook.pilot, expecting pilot or nil.");
return 0;
}
hook_type = luaL_checkstring(L,2);
/* Check to see if hook_type is valid */
if (strcmp(hook_type,"death")==0) type = PILOT_HOOK_DEATH;
else if (strcmp(hook_type,"exploded")==0) type = PILOT_HOOK_EXPLODED;
else if (strcmp(hook_type,"board")==0) type = PILOT_HOOK_BOARD;
else if (strcmp(hook_type,"disable")==0) type = PILOT_HOOK_DISABLE;
else if (strcmp(hook_type,"jump")==0) type = PILOT_HOOK_JUMP;
else if (strcmp(hook_type,"hail")==0) type = PILOT_HOOK_HAIL;
else if (strcmp(hook_type,"land")==0) type = PILOT_HOOK_LAND;
else if (strcmp(hook_type,"attacked")==0) type = PILOT_HOOK_ATTACKED;
else if (strcmp(hook_type,"idle")==0) type = PILOT_HOOK_IDLE;
else { /* hook_type not valid */
NLUA_ERROR(L, "Invalid pilot hook type: '%s'", hook_type);
return 0;
}
/* actually add the hook */
snprintf( buf, sizeof(buf), "p_%s", hook_type );
h = hook_generic( L, buf, 0., 3, 0 );
if (p==NULL)
pilots_addGlobalHook( type, h );
else
pilot_addHook( pilot_get(p->pilot), type, h );
lua_pushnumber( L, h );
return 1;
}
/**
* @brief Removes an outfit from a pilot.
*
* "all" will remove all outfits.
*
* @usage p:rmOutfit( "all" ) -- Leaves the pilot naked.
* @usage p:rmOutfit( "Neutron Disruptor", 1 ) -- Removes a neutron disruptor.
*
* @luparam p Pilot to remove outfit from.
* @luaparam outfit Name of the outfit to remove.
* @luaparam q Amount to remove.
* @luareturn The amount actually removed.
* @luafunc rmOutfit( p, outfit, q )
*/
static int pilotL_rmOutfit( lua_State *L )
{
LuaPilot *lp;
Pilot *p;
const char *outfit;
int q, n;
Outfit *o;
/* Get the pilot. */
lp = luaL_checkpilot(L,1);
p = pilot_get(lp->pilot);
if (p==NULL) {
NLUA_ERROR(L,"Pilot is invalid.");
return 0;
}
/* Get parameters. */
outfit = luaL_checkstring(L,2);
/* If outfit is "all", we remove everything. */
if (strcmp(outfit,"all")==0) {
n = 0;
while (p->outfits != NULL) {
pilot_rmOutfit( p, p->outfits[0].outfit, p->outfits[0].quantity );
n++;
}
lua_pushnumber(L,n);
return 1;
}
/* We'll need a quantity now. */
q = luaL_checkint(L,3);
/* Get the outfit. */
o = outfit_get( outfit );
if (o == NULL) {
NLUA_ERROR(L,"Outfit isn't found in outfit stack.");
return 0;
}
/* Add outfit. */
n = pilot_rmOutfit( p, o, q );
lua_pushnumber(L,n);
return 1;
}
/**
* @brief Runs an escort command on all of a pilot's escorts.
*
* @param parent Pilot who is giving orders.
* @param cmd Order to give.
* @param idx Lua index of argument or 0.
* @return 0 on success, 1 if no orders given.
*/
static int escort_command( Pilot *parent, const char *cmd, unsigned int idx )
{
int i;
Pilot *e;
if (parent->nescorts == 0)
return 1;
for (i=0; i<parent->nescorts; i++) {
e = pilot_get( parent->escorts[i].id );
if (e == NULL) /* Most likely died. */
continue;
pilot_msg(parent, e, cmd, idx);
}
return 0;
}
/**
* @brief Sets the pilot as friendly to player.
*
* @usage p:setFriendly()
*
* @luaparam p Pilot to set as friendly.
* @luafunc setFriendly( p )
*/
static int pilotL_setFriendly( lua_State *L )
{
LuaPilot *lp;
Pilot *p;
/* Get the pilot. */
lp = luaL_checkpilot(L,1);
p = pilot_get(lp->pilot);
if (p==NULL) {
NLUA_ERROR(L,"Pilot is invalid.");
return 0;
}
/* Remove hostile and mark as friendly. */
pilot_setFriendly(p);
return 0;
}
/**
* @brief Sets the pilot as hostile to player.
*
* @usage p:setHostile()
*
* @luaparam p Pilot to set as hostile.
* @luafunc setHostile( p )
*/
static int pilotL_setHostile( lua_State *L )
{
LuaPilot *lp;
Pilot *p;
/* Get the pilot. */
lp = luaL_checkpilot(L,1);
p = pilot_get(lp->pilot);
if (p==NULL) {
NLUA_ERROR(L,"Pilot is invalid.");
return 0;
}
/* Set as hostile. */
pilot_setHostile(p);
return 0;
}
/**
* @fn void player_board (void)
*
* @brief Attempt to board the player's target.
*
* Creates the window on success.
*/
void player_board (void)
{
Pilot *p;
unsigned int wdw;
char c;
HookParam hparam[2];
if (player.p->target==PLAYER_ID) {
/* We don't try to find far away targets, only nearest and see if it matches.
* However, perhaps looking for first boardable target within a certain range
* could be more interesting. */
player_targetNearest();
p = pilot_get(player.p->target);
if ((!pilot_isDisabled(p) && !pilot_isFlag(p,PILOT_BOARDABLE)) ||
pilot_isFlag(p,PILOT_NOBOARD)) {
player_targetClear();
player_message("\erYou need a target to board first!");
return;
}
/**
* @brief Weapon hit the pilot.
*
* @param w Weapon involved in the collision.
* @param p Pilot that got hit.
* @param layer Layer to which the weapon belongs.
* @param pos Position of the hit.
*/
static void weapon_hit( Weapon* w, Pilot* p, WeaponLayer layer, Vector2d* pos )
{
Pilot *parent;
int spfx;
double damage;
DamageType dtype;
WeaponLayer spfx_layer;
int s;
/* Get general details. */
parent = pilot_get(w->parent);
damage = w->strength * outfit_damage(w->outfit);
dtype = outfit_damageType(w->outfit);
/* Play sound if they have it. */
s = outfit_soundHit(w->outfit);
if (s != -1)
w->voice = sound_playPos( s,
w->solid->pos.x,
w->solid->pos.y,
w->solid->vel.x,
w->solid->vel.y);
/* Have pilot take damage and get real damage done. */
damage = pilot_hit( p, w->solid, w->parent, dtype, damage );
/* Get the layer. */
spfx_layer = (p==player) ? SPFX_LAYER_FRONT : SPFX_LAYER_BACK;
/* Choose spfx. */
if (p->shield > 0.)
spfx = outfit_spfxShield(w->outfit);
else
spfx = outfit_spfxArmour(w->outfit);
/* Add sprite, layer depends on whether player shot or not. */
spfx_add( spfx, pos->x, pos->y,
VX(p->solid->vel), VY(p->solid->vel), spfx_layer );
/* Inform AI that it's been hit. */
weapon_hitAI( p, parent, damage );
/* no need for the weapon particle anymore */
weapon_destroy(w,layer);
}
/**
* @brief Gets the pilot's current name.
*
* @usage name = p:name()
*
* @luaparam p Pilot to get the name of.
* @luareturn The current name of the pilot.
* @luafunc name( p )
*/
static int pilotL_name( lua_State *L )
{
LuaPilot *p1;
Pilot *p;
/* Parse parameters. */
p1 = luaL_checkpilot(L,1);
p = pilot_get( p1->pilot );
/* Pilot must exist. */
if (p == NULL) {
NLUA_ERROR(L,"Pilot is invalid.");
return 0;
}
/* Get name. */
lua_pushstring(L, p->name);
return 1;
}