• Vehicle damage is connected to the damage state signals that are updated from the cOnStateChanged() event on SCR_HitZoneStateSignal (checking SCR_HitZone).
• The signal setup is on SCR_VehicleSoundComponent's cGetHitZoneStateSignalData().
• Multiple scripted hit zones can update the same signal. In that case, the signal has the value of the most damaged scripted hit zone.
• TireDamage signals are updated directly from SCR_WheelHitZone.

Wheeled

Engine

• When in idle, engine RPM is modulated EngineDamageRPMRevs signal, creating a sense of unsteady and unreliable engine RPM
• SOUND_TIMING_BELT - One-shot sound, periodically triggered. Triggering frequency depends on engine RPM
• SOUND_ENGINE_RATTLE_LP - Looped sound modulated by engine RPM and thrust
• SOUND_BACK_FIRE - One-shot sound occasionally triggered

Gearbox

• SOUND_VEHICLE_GEARSHIFT - grinding sound layer is mixed in when the gearbox is damaged

Wheel Damage

• Driving on a flat tire or rim is mixed into wheel rolling sounds if the wheel is damaged or destroyed

Helicopters

Engine

• SOUND_TURBINE_LP - the damaged turbine layer is played when the engine is damaged
• SOUND_ENGINE_RATTLE - one-shot sound is occasionally triggered.

Main Rotor

• SOUND_MAINROTOR_LP - a loud whooshy sounding layer is mixed in, if the main rotor is damaged

Tail rotor

• SOUND_TAILROTOR_DAMAGED_LP - metal grinding/scraping sound is triggered, if the tail rotor is damaged.

Gearbox

• Metal grinding/rattling layer is mixed into SOUND_MAINROTOR_LP if the gearbox is damaged.

Smoke and Fire

Three sound sources are accompanying smoke and fire particles on vehicles.

• Engine smoke/fire:
  • On engine position
  • Uses the EngineFireState signal
  • Representing engine smoking or vehicle fire
  • Defined on SCR_FlammableHitZone
  • Particles size is static, defined on SCR_FlammableHitZone
• Supplies fire:
  • On supplies position
  • Size/type of sound is driven by the SuppliesFireState signal
  • Will include ammo cook-off layer
• Fuel tank fire
  • On fuel tank position
  • Size/type of sound is driven by the FuelTankFireState signal

Signals

EngineFireState

• 0 - no particles
• 10 - 30 - smoke
• 40 - fire

SuppliesFireState

• 0 - not burning
• 1 - 4 will return based on what particle effect is used. If small, medium, large or massive (Uses SCR_ESecondaryExplosionScale enum).

FuelTankFireState

• 0 - not burning
• 1 - 4 will return based on what particle effect is used. If small, medium, large or massive (Uses SCR_ESecondaryExplosionScale enum).