// ----------------------------------------------------------------------------
// afterburners_update()
//
// Update the state of the afterburner fuel remaining for an object using the
// afterburner.
//
// for the player ship, key_up_time() is called for the afterburner key to
// detect when afterburners disengage.
//
// input: *objp => pointer to the object starting afterburners
// fl_frametime => time in seconds of the last frame
//
void afterburners_update(object* objp, float fl_frametime)
{
Assert(objp != NULL);
Assert(objp->type == OBJ_SHIP);
Assert(objp->instance >= 0 && objp->instance < MAX_SHIPS);
ship_info* sip;
ship* shipp;
static int volume_chg_timer = 1;
shipp = &Ships[objp->instance];
Assert(shipp->ship_info_index >= 0 && shipp->ship_info_index < Num_ship_classes);
sip = &Ship_info[shipp->ship_info_index];
if ((objp->flags & OF_PLAYER_SHIP) && (Game_mode & GM_DEAD))
{
return;
}
if (!(sip->flags & SIF_AFTERBURNER))
{
return; // nothing to update, afterburners are not even on the ship
}
//shut the afterburners off if we're using the booster tertiary
//shut the afterburners off if we're in glide mode.
if ((objp->phys_info.flags & PF_AFTERBURNER_ON) &&
((objp->phys_info.flags & PF_BOOSTER_ON) || (objp->phys_info.flags & PF_GLIDING)))
{
if (objp == Player_obj)
afterburner_stop_sounds();
afterburners_stop(objp);
return;
}
if (objp == Player_obj)
{
if (!timestamp_elapsed(Player_disengage_timer))
{
float remaining;
remaining = timestamp_until(Player_disengage_timer) / i2fl(DISENGAGE_TIME);
if (remaining <= 0)
{
afterburner_stop_sounds();
}
else
{
if (remaining > 1.0f)
{
remaining = 1.0f;
}
snd_set_volume(Player_afterburner_loop_id, remaining * Player_afterburner_vol);
}
}
else
{
if (Player_disengage_timer != 1)
{
afterburner_stop_sounds();
}
}
}
// single player, multiplayer servers, and clients for their own ships
if (!(Game_mode & GM_MULTIPLAYER) || MULTIPLAYER_MASTER || (objp == Player_obj))
{
if (!(objp->phys_info.flags & PF_AFTERBURNER_ON))
{
// Recover afterburner fuel
if (shipp->afterburner_fuel < sip->afterburner_fuel_capacity)
{
float recharge_scale;
recharge_scale = Energy_levels[shipp->engine_recharge_index] * 2.0f * The_mission.ai_profile->
afterburner_recharge_scale[Game_skill_level];
shipp->afterburner_fuel += (sip->afterburner_recover_rate * fl_frametime * recharge_scale);
if (shipp->afterburner_fuel > sip->afterburner_fuel_capacity)
{
shipp->afterburner_fuel = sip->afterburner_fuel_capacity;
}
}
return;
}
else
{
// Check if there is enough afterburner fuel
if (shipp->afterburner_fuel <= 0)
{
shipp->afterburner_fuel = 0.0f;
afterburners_stop(objp);
return;
}
}
// afterburners are firing at this point
// Reduce the afterburner fuel
shipp->afterburner_fuel -= (sip->afterburner_burn_rate * fl_frametime);
if (shipp->afterburner_fuel < 0.0f)
{
shipp->afterburner_fuel = 0.0f;
}
}
if (objp == Player_obj)
{
if ((Viewer_mode & VM_NOT_COCKPIT))
{
// stop afterburner sound if it is playing
if (Player_afterburner_loop_id != -1)
{
snd_stop(Player_afterburner_loop_id);
Player_afterburner_loop_id = -1;
}
return;
}
if (timestamp_elapsed(Player_afterburner_loop_delay))
{
Player_afterburner_vol = Snds[SND_ABURN_LOOP].default_volume;
Player_afterburner_loop_delay = timestamp(50);
if (Player_afterburner_loop_id == -1)
{
Player_afterburner_loop_id = snd_play_looping(&Snds[SND_ABURN_LOOP], 0.0f, -1, -1,
Player_afterburner_vol);
//snd_set_volume(Player_afterburner_loop_id, Player_afterburner_vol);
// nprintf(("Alan","PLAY LOOPING SOUND\n"));
}
}
// Reduce the volume of the afterburner sound if near the end
if (timestamp_elapsed(volume_chg_timer))
{
float percent_afterburner_left;
percent_afterburner_left = shipp->afterburner_fuel / sip->afterburner_fuel_capacity;
volume_chg_timer = timestamp(AFTERBURNER_VOLUME_UPDATE);
if (percent_afterburner_left < AFTERBURNER_PERCENT_VOL_ATTENUATE)
{
Player_afterburner_vol = percent_afterburner_left * (1 / AFTERBURNER_PERCENT_VOL_ATTENUATE) *
Snds[SND_ABURN_LOOP].default_volume;
snd_set_volume(Player_afterburner_loop_id, Player_afterburner_vol);
}
} // end if (timestamp_elapsed(volume_chg_timer))
}
}
/**
* Update the state of the afterburner fuel remaining for an object using the afterburner.
*
* For the player ship, key_up_time() is called for the afterburner key to
* detect when afterburners disengage.
*
* @param *objp pointer to the object starting afterburners
* @param fl_frametime time in seconds of the last frame
*/
void afterburners_update(object *objp, float fl_frametime)
{
Assert( objp != NULL );
Assert( objp->type == OBJ_SHIP );
Assert( objp->instance >= 0 && objp->instance < MAX_SHIPS );
ship_info *sip;
ship *shipp;
static int volume_chg_timer = 1;
shipp = &Ships[objp->instance];
Assert( shipp->ship_info_index >= 0 && shipp->ship_info_index < static_cast<int>(Ship_info.size()) );
sip = &Ship_info[shipp->ship_info_index];
if ( (objp->flags[Object::Object_Flags::Player_ship] ) && (Game_mode & GM_DEAD) ) {
return;
}
if ( !(sip->flags[Ship::Info_Flags::Afterburner]) ) {
return; // nothing to update, afterburners are not even on the ship
}
//shut the afterburners off if we're using the booster tertiary
if ( objp->phys_info.flags & PF_BOOSTER_ON)
{
if (objp==Player_obj) afterburner_stop_sounds();
afterburners_stop(objp);
return;
}
if ( objp == Player_obj ) {
if ( !timestamp_elapsed(Player_disengage_timer) ) {
float remaining;
remaining = timestamp_until(Player_disengage_timer) / i2fl(DISENGAGE_TIME);
if ( remaining <= 0 ) {
afterburner_stop_sounds();
}
else {
snd_set_volume( Player_afterburner_loop_id, remaining*Player_afterburner_vol);
}
}
else {
if ( Player_disengage_timer != 1 ) {
afterburner_stop_sounds();
}
}
}
// single player, multiplayer servers, and clients for their own ships
if(!(Game_mode & GM_MULTIPLAYER) || MULTIPLAYER_MASTER || (objp == Player_obj)) {
if ( !(objp->phys_info.flags & PF_AFTERBURNER_ON) ) {
// Recover afterburner fuel
if ( shipp->afterburner_fuel < sip->afterburner_fuel_capacity ) {
float recharge_scale;
recharge_scale = Energy_levels[shipp->engine_recharge_index] * 2.0f * The_mission.ai_profile->afterburner_recharge_scale[Game_skill_level];
shipp->afterburner_fuel += (sip->afterburner_recover_rate * fl_frametime * recharge_scale);
if ( shipp->afterburner_fuel > sip->afterburner_fuel_capacity){
shipp->afterburner_fuel = sip->afterburner_fuel_capacity;
}
}
return;
} else {
// Check if there is enough afterburner fuel
if ( shipp->afterburner_fuel <= 0 ) {
shipp->afterburner_fuel = 0.0f;
afterburners_stop(objp);
return;
}
}
// afterburners are firing at this point
// Reduce the afterburner fuel
shipp->afterburner_fuel -= (sip->afterburner_burn_rate * fl_frametime);
if ( shipp->afterburner_fuel < 0.0f ) {
shipp->afterburner_fuel = 0.0f;
}
}
if ( objp == Player_obj ) {
if ( timestamp_elapsed(Player_afterburner_loop_delay) ) {
Player_afterburner_vol = AFTERBURNER_DEFAULT_VOL;
Player_afterburner_loop_delay = 0;
if ( Player_afterburner_loop_id == -1 ) {
Player_afterburner_loop_id = snd_play_looping( gamesnd_get_game_sound(ship_get_sound(objp, GameSounds::ABURN_LOOP)), 0.0f , -1, -1);
snd_set_volume(Player_afterburner_loop_id, Player_afterburner_vol);
}
}
// Reduce the volume of the afterburner sound if near the end
if ( timestamp_elapsed(volume_chg_timer) ) {
float percent_afterburner_left;
percent_afterburner_left = shipp->afterburner_fuel / sip->afterburner_fuel_capacity;
volume_chg_timer = timestamp(AFTERBURNER_VOLUME_UPDATE);
if ( percent_afterburner_left < AFTERBURNER_PERCENT_VOL_ATTENUATE ) {
Player_afterburner_vol = percent_afterburner_left*(1/AFTERBURNER_PERCENT_VOL_ATTENUATE)*AFTERBURNER_DEFAULT_VOL;
snd_set_volume(Player_afterburner_loop_id, Player_afterburner_vol);
}
} // end if (timestamp_elapsed(volume_chg_timer))
}
}
