Vehicles used to have different sounds if the Engine failed to start, depending on if a Spark Plug, a Battery or fuel was missing.
This is not the case anymore, but i think it's not intended as the functionality is still there, just never executes since it's getting called on Server only.
I already made a fix for that, but maybe you guys can come up with a better or more slick solution.
override bool OnBeforeEngineStart()
{
EntityAI item = null;
CarEngineSoundState state;
Param1<int> newState;
if ( IsVitalAttachmentDamaged() )
{
state = CarEngineSoundState.NONE;
newState = new Param1<int>( state );
GetGame().RPCSingleParam(this, RPC_CARFAIL, newState, true);
return false;
}
if (GetFluidFraction(CarFluid.FUEL) <= 0)
{
state = CarEngineSoundState.START_NO_FUEL;
newState = new Param1<int>( state );
GetGame().RPCSingleParam(this, RPC_CARFAIL, newState, true);
return false;
}
if (IsVitalCarBattery() || IsVitalTruckBattery())
{
item = GetBattery();
if (!item || (item && (item.IsRuined() || item.GetCompEM().GetEnergy() < m_BatteryEnergyStartMin)))
{
state = CarEngineSoundState.START_NO_BATTERY;
newState = new Param1<int>( state );
GetGame().RPCSingleParam(this, RPC_CARFAIL, newState, true);
return false;
}
}
if (IsVitalSparkPlug())
{
item = FindAttachmentBySlotName("SparkPlug");
if (!item || (item && item.IsRuined()))
{
state = CarEngineSoundState.START_NO_SPARKPLUG;
newState = new Param1<int>( state );
GetGame().RPCSingleParam(this, RPC_CARFAIL, newState, true);
return false;
}
}
if (IsVitalGlowPlug())
{
item = FindAttachmentBySlotName("GlowPlug");
if (!item || (item && item.IsRuined()))
{
state = CarEngineSoundState.START_NO_SPARKPLUG;
newState = new Param1<int>( state );
GetGame().RPCSingleParam(this, RPC_CARFAIL, newState, true);
return false;
}
}
if (!m_EngineBeforeStart)
{
m_EngineBeforeStart = true;
HandleEngineSound(CarEngineSoundState.STARTING);
}
return true;
}
override void OnRPC(PlayerIdentity sender, int rpc_type,ParamsReadContext ctx)
{
super.OnRPC(sender, rpc_type,ctx);
switch (rpc_type)
{
case RPC_CARFAIL:
{
Param1<int> carfail_params;
if (!ctx.Read(carfail_params))
{
break;
}
switch (carfail_params.param1)
{
case CarEngineSoundState.START_NO_FUEL:
PlayCarFailNoFuel();
break;
case CarEngineSoundState.START_NO_BATTERY:
PlayCarFailNoBattery();
break;
case CarEngineSoundState.START_NO_SPARKPLUG:
PlayCarFailNoSparkPlug();
break;
case CarEngineSoundState.NONE:
PlayCarFailNoSparkPlug();
break;
}
}
}
}On top of that i found that almost all Vanilla Vehicles have their
engine_failed_start_battery_SoundShader
volume=0