/**
* Checks whether a NewGRF wants to play a different vehicle sound effect.
* @param v Vehicle to play sound effect for.
* @param event Trigger for the sound effect.
* @return false if the default sound effect shall be played instead.
*/
bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event)
{
const GRFFile *file = GetEngineGRF(v->engine_type);
uint16 callback;
/* If the engine has no GRF ID associated it can't ever play any new sounds */
if (file == NULL) return false;
/* Check that the vehicle type uses the sound effect callback */
if (!HasBit(EngInfo(v->engine_type)->callback_mask, CBM_VEHICLE_SOUND_EFFECT)) return false;
callback = GetVehicleCallback(CBID_VEHICLE_SOUND_EFFECT, event, 0, v->engine_type, v);
/* Play default sound if callback fails */
if (callback == CALLBACK_FAILED) return false;
if (callback >= ORIGINAL_SAMPLE_COUNT) {
callback -= ORIGINAL_SAMPLE_COUNT;
/* Play no sound if result is out of range */
if (callback > file->num_sounds) return true;
callback += file->sound_offset;
}
assert(callback < GetNumSounds());
SndPlayVehicleFx(callback, v);
return true;
}
static void HandleBrokenShip(Vehicle *v)
{
if (v->breakdown_ctr != 1) {
v->breakdown_ctr = 1;
v->cur_speed = 0;
if (v->breakdowns_since_last_service != 255)
v->breakdowns_since_last_service++;
v->MarkDirty();
SetWindowDirty(WC_VEHICLE_VIEW, v->index);
SetWindowDirty(WC_VEHICLE_DETAILS, v->index);
if (!PlayVehicleSound(v, VSE_BREAKDOWN)) {
SndPlayVehicleFx((_settings_game.game_creation.landscape != LT_TOYLAND) ?
SND_10_TRAIN_BREAKDOWN : SND_3A_COMEDY_BREAKDOWN_2, v);
}
if (!(v->vehstatus & VS_HIDDEN)) {
EffectVehicle *u = CreateEffectVehicleRel(v, 4, 4, 5, EV_BREAKDOWN_SMOKE);
if (u != NULL) u->animation_state = v->breakdown_delay * 2;
}
}
if (!(v->tick_counter & 1)) {
if (!--v->breakdown_delay) {
v->breakdown_ctr = 0;
v->MarkDirty();
SetWindowDirty(WC_VEHICLE_VIEW, v->index);
}
}
}
static void PlayShipSound(const Vehicle *v)
{
if (!PlayVehicleSound(v, VSE_START)) {
SndPlayVehicleFx(ShipVehInfo(v->engine_type)->sfx, v);
}
}