path: root/Northstar.CustomServers/mod/scripts/vscripts/mp/_codecallbacks.gnut

untyped


global function CodeCallback_Init
global function CodeCallback_DamagePlayerOrNPC
global function GameModeRulesShouldGiveTimerCredit
global function SetGameModeRulesShouldGiveTimerCredit
global function SetGameModeRulesEarnMeterOnDamage
global function GetDamageOrigin
global function CodeCallBack_ShouldTriggerSniperCam
global function CodeCallback_ForceAIMissPlayer
global function CodeCallback_OnTouchHealthKit
global function CodeCallback_OnPlayerGrappled
global function CodeCallback_OnProjectileGrappled
global function DamageInfo_ScaleDamage
global function CodeCallback_CheckPassThroughAddsMods
global function SetTitanMeterGainScale

#if MP
global function CodeCallback_OnServerAnimEvent
#endif

struct AccumulatedDamageData
{
	float accumulatedDamage
	float lastDamageTime
}

struct
{
	float titanMeterGainScale = 0.0001
	bool functionref( entity, entity, var ) ShouldGiveTimerCreditGameModeRules
	void functionref( entity, entity, TitanDamage, float ) earnMeterOnDamageGameModeRulesCallback

	table<entity, AccumulatedDamageData> playerAccumulatedDamageData
} file

void function CodeCallback_Init()
{
	file.ShouldGiveTimerCreditGameModeRules = ShouldGiveTimerCredit_Default
	file.earnMeterOnDamageGameModeRulesCallback = GameModeRulesEarnMeterOnDamage_Default
	RegisterSignal( "DamagedPlayerOrNPC" )
	RegisterSignal( "UpdateAccumulatedDamageAfterDelay" )

	AddCallback_OnClientConnected( OnClientConnected )
}

void function OnClientConnected( entity player )
{
	AccumulatedDamageData damageData
	file.playerAccumulatedDamageData[player] <- damageData
}

// TODO: Get an equivalent callback happening on the client, so we can stop using ServerCallback_PlayerTookDamage which is always out of date to some degree.
void function CodeCallback_DamagePlayerOrNPC( entity ent, var damageInfo )
{
	bool entIsPlayer = ent.IsPlayer()
	bool entIsTitan = ent.IsTitan()
	bool entIsNPC = ent.IsNPC()

	entity attacker = DamageInfo_GetAttacker( damageInfo )
	entity inflictor = DamageInfo_GetInflictor( damageInfo )

	bool attackerIsPlayer = false
	bool attackerIsTitan = false
	bool attackerIsNPC = false

	if ( IsValid( attacker ) )
	{
		attackerIsPlayer = attacker.IsPlayer()
		attackerIsTitan = attacker.IsTitan()
		attackerIsNPC = attacker.IsNPC()
	}

	// Set damage source correctly when npc grunts or titans try to melee us
	if ( attackerIsNPC && DamageInfo_GetCustomDamageType( damageInfo ) & DF_MELEE )
	{
		if ( IsValid( attacker ) )
		{
			if ( attackerIsTitan )
			{
				DamageInfo_SetDamageSourceIdentifier( damageInfo, eDamageSourceId.auto_titan_melee )
			}
			else if ( IsSpectre( attacker ) )
			{
				DamageInfo_SetDamageSourceIdentifier( damageInfo, eDamageSourceId.spectre_melee )
			}
			else if ( IsProwler( attacker ) )
			{
				DamageInfo_SetDamageSourceIdentifier( damageInfo, eDamageSourceId.prowler_melee )
			}
			else if ( IsSuperSpectre( attacker ) )
			{
				DamageInfo_SetDamageSourceIdentifier( damageInfo, eDamageSourceId.super_spectre_melee )
			}
			else
			{
				DamageInfo_SetDamageSourceIdentifier( damageInfo, eDamageSourceId.grunt_melee )
			}
		}
	}

	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "CodeCallback_DamagePlayerOrNPC ent:", ent )
		printt( "    Attacker:", DamageInfo_GetAttacker( damageInfo ) )
		printt( "    Inflictor:", DamageInfo_GetInflictor( damageInfo ) )
		printt( "    Distance:", DamageInfo_GetDistFromAttackOrigin( damageInfo ) )
		printt( "    Original damage:", DamageInfo_GetDamage( damageInfo ) )
		printt( "    Hitbox:", DamageInfo_GetHitBox( damageInfo ) )
		int sourceID = DamageInfo_GetDamageSourceIdentifier( damageInfo )
		printt( "    SourceID:", sourceID )
		if ( sourceID == -1 )
			printt( "    SourceID: From Code (npc melee, etc)" )
		else
			printt( "    SourceID:", GetObitFromDamageSourceID( sourceID ) )

		PrintDamageFlags( DamageInfo_GetCustomDamageType( damageInfo ) )
	#endif

	if ( !ScriptCallback_ShouldEntTakeDamage( ent, damageInfo ) )
	{
		// EMP triggers on damage, but in some cases players are invlunerable (embark, disembark, etc...)
		if ( entIsPlayer && DamageInfo_GetDamageSourceIdentifier( damageInfo ) in level._empForcedCallbacks )
		{
			if ( ShouldPlayEMPEffectEvenWhenDamageIsZero( ent, attacker ) )
				EMP_DamagedPlayerOrNPC( ent, damageInfo )
		}

		DamageInfo_SetDamage( damageInfo, 0 )
		return
	}

	if ( ( IsAirDrone( ent ) ) && ( DamageInfo_GetDamageSourceIdentifier( damageInfo ) in level._empForcedCallbacks ) )
	{
		EMP_DamagedPlayerOrNPC( ent, damageInfo )
		DamageInfo_SetDamage( damageInfo, 0 )
		return
	}

	if ( DamageInfo_GetDamageSourceIdentifier( damageInfo ) == damagedef_titan_step )
		HandleFootstepDamage( ent, damageInfo )

	// HACK helps trap/grenade weapons do damage to the correct entities (player who deployed it as well as the team opposite his)
	if ( IsValid( inflictor ) && "originalOwner" in inflictor.s )
	{
		local ogOwner = inflictor.s.originalOwner
		if ( IsValid( ogOwner ) )
		{
			// if the victim is the guy who damaged the trap, and he is not the ogOwner...
			if ( ent == attacker && ent != ogOwner )
			{
				// HACK to do this legit we need DamageInfo_SetAttacker( damageInfo )
				// victim should take damage from the original owner instead of the satchel attacker so he gets a kill credit
				ent.TakeDamage( DamageInfo_GetDamage( damageInfo ), ogOwner, inflictor, { weapon = DamageInfo_GetWeapon( damageInfo ), origin = DamageInfo_GetDamagePosition( damageInfo ), force = DamageInfo_GetDamageForce( damageInfo ), scriptType = DamageInfo_GetCustomDamageType( damageInfo ), damageSourceId = DamageInfo_GetDamageSourceIdentifier( damageInfo ) } )

				// now zero out the normal damage and return
				DamageInfo_SetDamage( damageInfo, 0 )
				return
			}
		}
	}

	if ( IsValid( inflictor ) )
	{
		if ( inflictor.IsProjectile() && entIsPlayer )
		{
			if ( inflictor.proj.damageScale != 1.0 )
			{
				DamageInfo_ScaleDamage( damageInfo, inflictor.proj.damageScale )
			}

			// Don't take damage from projectiles created before you where spawned.
			if ( inflictor.GetProjectileCreationTime() < ent.s.respawnTime && ( Time() - ent.s.respawnTime ) < 2.0 )
			{
				DamageInfo_SetDamage( damageInfo, 0 )
				return
			}
		}

		if ( inflictor.e.onlyDamageEntitiesOnce == true || inflictor.e.onlyDamageEntitiesOncePerTick == true )
		{
			Assert( !inflictor.e.damagedEntities.contains(ent) )
			inflictor.e.damagedEntities.append( ent )
		}
	}

	// Round damage to nearest full value
	DamageInfo_SetDamage( damageInfo, floor( DamageInfo_GetDamage( damageInfo ) + 0.5 ) )
	if ( DamageInfo_GetDamage( damageInfo ) <= 0 )
		return

	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "    rounded damage amount:", DamageInfo_GetDamage( damageInfo ) )
	#endif

	HandleLocationBasedDamage( ent, damageInfo )
	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "    after location based damage:", DamageInfo_GetDamage( damageInfo ) )
	#endif

	//PROTO Defensive AI Chip. Ideally less invisible gameplay, but something that can combo with other chips.
	if ( ent.IsTitan() && entIsNPC )
	{
		entity soul = ent.GetTitanSoul()
		if ( IsValid( soul ) && SoulHasPassive( soul, ePassives.PAS_GUARDIAN_CHIP ) )
		{
			DamageInfo_SetDamage( damageInfo, DamageInfo_GetDamage( damageInfo ) * 0.8 )
			#if VERBOSE_DAMAGE_PRINTOUTS
				printt( "After guardian chip :", DamageInfo_GetDamage( damageInfo ) )
			#endif
		}
	}

	RunClassDamageCallbacks( ent, damageInfo )
	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "    after class damage callbacks:", DamageInfo_GetDamage( damageInfo ) )
	#endif
	if ( DamageInfo_GetDamage( damageInfo ) == 0 )
		return

	// use AddDamageByCallback( "classname", function ) to registed functions
	if ( IsValid( attacker ) )
	{
		if ( attackerIsTitan )
		{
			entity soul = attacker.GetTitanSoul()
			if ( IsValid( soul ) )
			{
				float damageAmpScale = 1.0 + StatusEffect_Get( soul, eStatusEffect.titan_damage_amp )
				if ( damageAmpScale != 1.0 )
					DamageInfo_ScaleDamage( damageInfo, damageAmpScale )
			}
		}

		string attackerClassName = attacker.GetClassName()
		if ( attackerClassName in svGlobal.damageByCallbacks )
		{
			foreach ( callbackFunc in svGlobal.damageByCallbacks[attackerClassName] )
			{
				callbackFunc( ent, damageInfo )
				if ( DamageInfo_GetDamage( damageInfo ) == 0 )
					return
			}
		}
	}

	float damageMultiplier = 1.0 + StatusEffect_Get( ent, eStatusEffect.damage_received_multiplier )
	if ( damageMultiplier != 1.0 )
		DamageInfo_ScaleDamage( damageInfo, damageMultiplier )

	// Added via AddEntityCallback_OnDamaged
	foreach ( callbackFunc in ent.e.entDamageCallbacks )
	{
		callbackFunc( ent, damageInfo )
	}
	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "    after AddEntityCallback_OnDamaged callbacks:", DamageInfo_GetDamage( damageInfo ) )
	#endif

	// use AddDamageCallbackSourceID( "classname", function ) to registed functions
	int damageSourceId = DamageInfo_GetDamageSourceIdentifier( damageInfo )
	if ( damageSourceId in shGlobal.damageSourceIdCallbacks )
	{
		foreach ( callbackFunc in shGlobal.damageSourceIdCallbacks[ damageSourceId ] )
		{
			callbackFunc( ent, damageInfo )
		}
	}
	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "    after damageSourceID callbacks:", DamageInfo_GetDamage( damageInfo ) )
	#endif
	if ( DamageInfo_GetDamage( damageInfo ) == 0 )
		return

	RunClassDamageFinalCallbacks( ent, damageInfo )
	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "    after class damage final callbacks:", DamageInfo_GetDamage( damageInfo ) )
	#endif
	if ( DamageInfo_GetDamage( damageInfo ) == 0 )
		return

	if ( DamageInfo_GetCustomDamageType( damageInfo ) & DF_DOOMED_HEALTH_LOSS )
		DamageInfo_AddDamageFlags( damageInfo, DAMAGEFLAG_NOPAIN )

	float savedDamage = DamageInfo_GetDamage( damageInfo )

	TitanDamage titanDamage
	if ( entIsPlayer )
	{
		PlayerTookDamage( ent, damageInfo, attacker, inflictor, damageSourceId, titanDamage )
		if ( DamageInfo_GetDamage( damageInfo ) == 0 && entIsTitan )
		{
			EarnMeterDamageConversion( damageInfo, attacker, ent, 0, titanDamage )
			return
		}

		if ( attackerIsPlayer )
			PlayerDamageFeedback( ent, damageInfo )
		savedDamage = DamageInfo_GetDamage( damageInfo )

		if ( !entIsTitan )
			ent.SetCloakFlicker( 0.5, 0.65 )
	}
	else
	{
		Assert( entIsNPC )
		bool clearedDamage
		if ( ent.ai.buddhaMode )
		{
			float currentDamage = DamageInfo_GetDamage( damageInfo )
			int remainingHealth = ent.GetHealth()

			if ( currentDamage >= remainingHealth - ( DOOMED_MIN_HEALTH + 1 ) )
			{
				currentDamage = max( remainingHealth - ( DOOMED_MIN_HEALTH + 1 ), 0 )
				DamageInfo_SetDamage( damageInfo, currentDamage )
				clearedDamage = currentDamage == 0
			}
		}

		if ( !clearedDamage )
		{
			if ( entIsTitan )
			{
				Titan_NPCTookDamage( ent, damageInfo, titanDamage )
				savedDamage = DamageInfo_GetDamage( damageInfo )
			}
			else
			{
				Generic_NPCTookDamage( ent, damageInfo, titanDamage )
			}
		}

		if ( attackerIsPlayer )
			PlayerDamageFeedback( ent, damageInfo )
	}

	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "    After player damage mod:", DamageInfo_GetDamage( damageInfo ) )
	#endif

	#if VERBOSE_DAMAGE_PRINTOUTS
	if ( titanDamage.shieldDamage > 0 )
		printt( "    	Shield Damage:", titanDamage.shieldDamage )
	#endif

	// Added via AddEntityCallback_OnPostDamaged
	foreach ( callbackFunc in ent.e.entPostDamageCallbacks )
	{
		callbackFunc( ent, damageInfo )
	}

	UpdateLastDamageTime( ent )

	//pain sounds _base_gametype.nut, death sounds in _death_package.nut
	UpdateDamageState( ent, damageInfo )
	HandlePainSounds( ent, damageInfo )

	UpdateAttackerInfo( ent, attacker, savedDamage )

	if ( !(DamageInfo_GetCustomDamageType( damageInfo ) & DF_DOOMED_HEALTH_LOSS) )
	{
		if ( attackerIsPlayer )
		{
			if ( entIsTitan )
			{
				PlayerDealtTitanDamage( attacker, ent, savedDamage, damageInfo )

				entity entSoul = ent.GetTitanSoul()
				if ( attacker.p.currentTargetPlayerOrSoul_Ent != entSoul )
				{
					attacker.p.currentTargetPlayerOrSoul_Ent = ent.GetTitanSoul()

					TitanVO_TellPlayersThatAreAlsoFightingThisTarget( attacker, entSoul )
				}
				attacker.p.currentTargetPlayerOrSoul_LastHitTime = Time()
			}
			else if ( entIsPlayer )
			{
				attacker.p.currentTargetPlayerOrSoul_Ent = ent
				attacker.p.currentTargetPlayerOrSoul_LastHitTime = Time()
			}
		}
	}

	EarnMeterDamageConversion( damageInfo, attacker, ent, savedDamage, titanDamage )

	if ( entIsTitan )
	{
		TitanDamageFlinch( ent, damageInfo )

		if ( TitanDamageRewardsTitanCoreTime() && entIsPlayer && attacker.GetTeam() != ent.GetTeam() )
			AddCreditToTitanCoreBuilderForTitanDamageReceived( ent, savedDamage )
	}

	if ( entIsPlayer && !entIsTitan )
		PilotDamageFlinch( ent, damageInfo )

	#if VERBOSE_DAMAGE_PRINTOUTS
		printt( "    final damage done:", DamageInfo_GetDamage( damageInfo ) )
		printt( "	 health: " + ent.GetHealth() )
	#endif

	RunClassPostDamageCallbacks( ent, damageInfo )

	#if SERVER && MP
		Stats_OnPlayerDidDamage( ent, damageInfo )
		PIN_DamageDone( attacker, ent, DamageInfo_GetDamage( damageInfo ) )
	#endif

	attacker.Signal( "DamagedPlayerOrNPC" )
}

void function EarnMeterDamageConversion( var damageInfo, entity attacker, entity ent, float savedDamage, TitanDamage titanDamage )
{
	if ( !(DamageInfo_GetCustomDamageType( damageInfo ) & DF_DOOMED_HEALTH_LOSS) )
	{
		bool shouldGiveTimerCredit = file.ShouldGiveTimerCreditGameModeRules( attacker, ent, damageInfo )
		if ( attacker.IsPlayer() )
		{
			float titanSpawnDelay = GetTitanBuildTime( attacker )
			float timerCredit = 0.0

			if ( shouldGiveTimerCredit )
			{
				file.earnMeterOnDamageGameModeRulesCallback( attacker, ent, titanDamage, savedDamage )

				// Timer Credit seems unused. Need to investigate if all DecrementBuildTimer functions are worthless.
				if ( titanSpawnDelay && IsAlive( ent ) && GetCurrentPlaylistVarInt( "titan_build_credit_enabled", 1 ) == 1 )
				{
					if ( ent.IsTitan() )
					{
						timerCredit = GetCurrentPlaylistVarFloat( "titan_kill_credit", 0.5 )
						if ( PlayerHasServerFlag( attacker, SFLAG_HUNTER_TITAN ) )
							timerCredit *= 2.0
					}
					else
					{
						if ( ent.IsPlayer() )
						{
							timerCredit = GetCurrentPlaylistVarFloat( "player_kill_credit", 0.5 )
							if ( PlayerHasServerFlag( attacker, SFLAG_HUNTER_PILOT ) )
								timerCredit *= 2.5
						}
						else
						{
							if ( IsGrunt( ent ) )
							{
								timerCredit = GetCurrentPlaylistVarFloat( "ai_kill_credit", 0.5 )
								if ( PlayerHasServerFlag( attacker, SFLAG_HUNTER_GRUNT ) )
									timerCredit *= 2.5
							}
							else
							if ( IsSpectre( ent ) )
							{
								timerCredit = GetCurrentPlaylistVarFloat( "spectre_kill_credit", 0.5 )
								if ( PlayerHasServerFlag( attacker, SFLAG_HUNTER_SPECTRE ) )
									timerCredit *= 2.5
							}
							else
							if ( IsTurret( ent ) )
							{

								timerCredit = GetCurrentPlaylistVarFloat( "megaturret_kill_credit", 0.5 )
								//No 2x burn card for shooting mega turret
							}
							#if HAS_EVAC
							else
							if ( IsEvacDropship( ent ) )
							{
								timerCredit = GetCurrentPlaylistVarFloat( "evac_dropship_kill_credit", 0.5 )
							}
							#endif
						}
					}

					float dealtDamage = min( ent.GetHealth(), (savedDamage + titanDamage.shieldDamage) )
					timerCredit = timerCredit * (dealtDamage / ent.GetMaxHealth().tofloat())
				}

				if ( IsPilot( attacker ) && PlayerHasPassive( attacker, ePassives.PAS_AT_HUNTER ) )
					timerCredit *= 1.1

				if ( timerCredit && (!TitanDamageRewardsTitanCoreTime() || !attacker.IsTitan() ) )
					DecrementBuildTimer( attacker, timerCredit )
			}
		}

		if ( shouldGiveTimerCredit //Primary Check
			&& TitanDamageRewardsTitanCoreTime() //Playlist var check
			&& ent.IsTitan()
			&& attacker.IsTitan()
			&& attacker.GetTeam() != ent.GetTeam()
			&& !attacker.ContextAction_IsMeleeExecution() // Some melee executions deal A LOT of damage
			)
			AddCreditToTitanCoreBuilderForTitanDamageInflicted( attacker, savedDamage + titanDamage.shieldDamage )
	}
}


bool function ShouldUseNonTitanHeavyArmorDamageScale( entity victim )
{
	if ( (victim.GetArmorType() != ARMOR_TYPE_HEAVY) )
		return false

	if ( victim.IsTitan() )
		return false

	if ( IsDropship( victim ) )
		return false

	return true
}

void function GameModeRulesEarnMeterOnDamage_Default( entity attacker, entity victim, TitanDamage titanDamage, float savedDamage )
{
	#if MP
	if ( victim.IsTitan() && !attacker.IsTitan() && !IsValid( attacker.GetPetTitan() ) )
	{
		float damage = min( victim.GetHealth(), (savedDamage + titanDamage.shieldDamage) )
		float meterAmount = damage * file.titanMeterGainScale
		if ( PlayerHasPassive( attacker, ePassives.PAS_AT_HUNTER ) )
			meterAmount *= 1.1
		PlayerEarnMeter_AddOwnedFrac( attacker, meterAmount )

		AccumulatedDamageData damageData = file.playerAccumulatedDamageData[attacker]
		damageData.lastDamageTime = Time()
		damageData.accumulatedDamage += meterAmount

		if ( damageData.accumulatedDamage >= 0.01 )
		{
			attacker.Signal( "UpdateAccumulatedDamageAfterDelay" )
			AddPlayerScore( attacker, "DamageTitan", null, "", int( damageData.accumulatedDamage * 100 ) )
			damageData.accumulatedDamage = 0
		}
		else
		{
			thread UpdateAccumulatedDamageAfterDelay( attacker )
		}
	}
	#endif
}

void function SetTitanMeterGainScale( float scalar )
{
	file.titanMeterGainScale = scalar
}

#if MP
void function UpdateAccumulatedDamageAfterDelay( entity attacker )
{
	attacker.EndSignal( "OnDeath" )
	attacker.Signal( "UpdateAccumulatedDamageAfterDelay" )
	attacker.EndSignal( "UpdateAccumulatedDamageAfterDelay" )

	wait 0.25

	AccumulatedDamageData damageData = file.playerAccumulatedDamageData[attacker]

	if ( damageData.accumulatedDamage == 0 )
		return

	AddPlayerScore( attacker, "DamageTitan", null, "", int( max( damageData.accumulatedDamage * 100, 1 ) ) )
	damageData.accumulatedDamage = 0
}
#endif

void function SetGameModeRulesEarnMeterOnDamage( void functionref( entity, entity, TitanDamage, float ) rules )
{
	file.earnMeterOnDamageGameModeRulesCallback = rules
}

bool function ShouldGiveTimerCredit_Default( entity player, entity victim, var damageInfo )
{
	if ( player == victim )
		return false

	if ( player.IsTitan() && !IsCoreAvailable( player ) )
		return false

	if ( GAMETYPE == FREE_AGENCY && !player.IsTitan() )
		return false

	int damageSourceID = DamageInfo_GetDamageSourceIdentifier( damageInfo )
	switch ( damageSourceID )
	{
		case eDamageSourceId.mp_titancore_flame_wave:
		case eDamageSourceId.mp_titancore_flame_wave_secondary:
		case eDamageSourceId.mp_titancore_salvo_core:
		case damagedef_titan_fall:
		case damagedef_nuclear_core:
			return false
	}

	return true
}

bool function GameModeRulesShouldGiveTimerCredit( entity player, entity victim, var damageInfo )
{
	return file.ShouldGiveTimerCreditGameModeRules( player, victim, damageInfo )
}

void function SetGameModeRulesShouldGiveTimerCredit( bool functionref( entity, entity, var ) rules )
{
	file.ShouldGiveTimerCreditGameModeRules = rules
}

function TitanDamageFlinch( entity ent, damageInfo )
{
	if ( DamageInfo_GetCustomDamageType( damageInfo ) & DF_DOOMED_HEALTH_LOSS )
		return

	if ( TitanStagger( ent, damageInfo ) )
		return

	if ( DamageInfo_GetDamage( damageInfo ) >= TITAN_ADDITIVE_FLINCH_DAMAGE_THRESHOLD )
		AddFlinch( ent, damageInfo )
}

function PilotDamageFlinch( entity ent, damageInfo )
{
	//if ( DamageInfo_GetCustomDamageType( damageInfo ) & DF_DOOMED_HEALTH_LOSS )
	//	return

	float damage = DamageInfo_GetDamage( damageInfo )
	if ( damage >= 5 )
		AddFlinch( ent, damageInfo )
}

vector function GetDamageOrigin( damageInfo, entity victim = null )
{
	int damageSourceId = DamageInfo_GetDamageSourceIdentifier( damageInfo )

	entity inflictor = DamageInfo_GetInflictor( damageInfo )

	if ( inflictor == svGlobal.worldspawn )
		return DamageInfo_GetDamagePosition( damageInfo )

	vector damageOrigin = IsValid( inflictor ) ? inflictor.GetOrigin() : DamageInfo_GetDamagePosition( damageInfo )

	switch ( damageSourceId )
	{
		case eDamageSourceId.mp_weapon_satchel:
		case eDamageSourceId.mp_weapon_proximity_mine:
		case eDamageSourceId.mp_titanweapon_arc_pylon:
			break

		case damagedef_nuclear_core:
		case eDamageSourceId.mp_titanability_smoke:
			//if ( IsValid( victim ) && victim.IsPlayer() && IsValid( victim.GetTitanSoulBeingRodeoed() ) )
			{
				damageOrigin += (RandomVecInDome( Vector( 0, 0, -1 ) ) * 300.0)
				damageOrigin += Vector( 0, 0, 128 )
			}
			break

		case eDamageSourceId.switchback_trap:
			if ( IsValid( victim ) && victim.IsPlayer() )
				damageOrigin = victim.EyePosition() + (RandomVecInDome( Vector( 0, 0, -1 ) ) * 300.0)
			break

		default:
			if ( DamageInfo_GetAttacker( damageInfo ) )
			{
				inflictor = DamageInfo_GetAttacker( damageInfo )
				damageOrigin = inflictor.GetWorldSpaceCenter()
			}
			break
	}

	return damageOrigin
}

/*
function TrackDPS( ent )
{
	ent.s.dpsTracking <- {}
	ent.s.dpsTracking.damage <- 0

	local startTime = Time()

	ent.WaitSignal( "Doomed" )

	local duration = Time() - startTime

	printt( "DPS:", ent.s.dpsTracking.damage / duration, duration )

	delete ent.s.dpsTracking
}

function UpdateDPS( ent, damageInfo )
{
	if ( GetDoomedState( ent ) )
		return

	if ( !( "dpsTracking" in ent.s ) )
		thread TrackDPS( ent )

	ent.s.dpsTracking.damage += DamageInfo_GetDamage( damageInfo )
}
*/


void function PlayerTookDamage( entity player, var damageInfo, entity attacker, entity inflictor, int damageSourceId, TitanDamage titanDamage )
{
	int hitBox = DamageInfo_GetHitBox( damageInfo )

	bool critHit = false

	if ( CritWeaponInDamageInfo( damageInfo ) )
		critHit = IsCriticalHit( attacker, player, hitBox, DamageInfo_GetDamage( damageInfo ), DamageInfo_GetDamageType( damageInfo ) )

	if ( critHit )
		DamageInfo_AddCustomDamageType( damageInfo, DF_CRITICAL )

	array<string> weaponMods = GetWeaponModsFromDamageInfo( damageInfo )

	local eModSourceID = null
	foreach ( mod in weaponMods )
	{
		local modSourceID = GetModSourceID( mod )
		if ( modSourceID != null && modSourceID in modNameStrings )
			eModSourceID = modSourceID
	}

	if ( DamageInfo_GetDamageSourceIdentifier( damageInfo ) == eDamageSourceId.fall )
		DamageInfo_SetForceKill( damageInfo, true )

	bool isTitan = player.IsTitan()

	if ( isTitan )
		Titan_PlayerTookDamage( player, damageInfo, attacker, critHit, titanDamage )
	else
		Wallrun_PlayerTookDamage( player, damageInfo, attacker )

	float damageAmount = DamageInfo_GetDamage( damageInfo )
	bool isKillShot = (damageAmount >= player.GetHealth())
	int damageType = DamageInfo_GetCustomDamageType( damageInfo )
	if ( isKillShot )
		damageType = (damageType | DF_KILLSHOT)

	if ( isTitan && (DamageInfo_GetDamage( damageInfo ) == 0) )
	{
		if ( titanDamage.doomedNow ) // to make kill card come up for you even if you have auto-eject. In Titan_PlayerTookDamage we set damage to 0 if you have Auto-Eject and are doomed
			TellClientPlayerTookDamage( player, damageInfo, attacker, eModSourceID, damageType, damageSourceId, titanDamage )
	}

	vector attackerOrigin = Vector( 0, 0, 0 )
	if ( IsValid( attacker ) )
		attackerOrigin = attacker.GetOrigin()

	if ( IsAlive( player ) )
	{
		float storeTime = MAX_DAMAGE_HISTORY_TIME
		entity storeEnt
		if ( isTitan )
		{
			storeEnt = player.GetTitanSoul()
		}
		else
		{
			storeEnt = player
			if ( IsSingleplayer() )
				storeTime = 30.0
		}

		StoreDamageHistoryAndUpdate( storeEnt, storeTime, DamageInfo_GetDamage( damageInfo ), attackerOrigin, damageType, damageSourceId, attacker, weaponMods )
	}

	if ( !(DamageInfo_GetCustomDamageType( damageInfo ) & DF_DOOMED_HEALTH_LOSS) )
		TellClientPlayerTookDamage( player, damageInfo, attacker, eModSourceID, damageType, damageSourceId, titanDamage )
}

function TellClientPlayerTookDamage( entity player, damageInfo, entity attacker, eModSourceID, int damageType, int damageSourceId, TitanDamage titanDamage )
{
	if ( !player.hasConnected )
		return

	local attackerEHandle = IsValid( attacker ) ? attacker.GetEncodedEHandle() : null
	local weaponEHandle = IsValid( DamageInfo_GetWeapon( damageInfo ) ) ? DamageInfo_GetWeapon( damageInfo ).GetEncodedEHandle() : null
	local damageOrigin = GetDamageOrigin( damageInfo, player )

	if ( player.IsTitan() )
		Remote_CallFunction_Replay( player, "ServerCallback_TitanTookDamage", DamageInfo_GetDamage( damageInfo ), damageOrigin.x, damageOrigin.y, damageOrigin.z, damageType, damageSourceId, attackerEHandle, eModSourceID, titanDamage.doomedNow, titanDamage.doomedDamage )
	else
		Remote_CallFunction_Replay( player, "ServerCallback_PilotTookDamage", DamageInfo_GetDamage( damageInfo ), damageOrigin.x, damageOrigin.y, damageOrigin.z, damageType, damageSourceId, attackerEHandle, eModSourceID )
}

// This only handles damage events. Whizbys can still cause snipercam to trigger without passing through this check.
function CodeCallBack_ShouldTriggerSniperCam( damageInfo )
{
	switch ( DamageInfo_GetDamageSourceIdentifier( damageInfo ) )
	{
		case damagedef_titan_step:
		case eDamageSourceId.super_electric_smoke_screen:
			return false
	}

	return true
}

bool function CodeCallback_ForceAIMissPlayer( entity npc, entity player )
{
	return SPMP_Callback_ForceAIMissPlayer( npc, player )
}

bool function CodeCallback_OnTouchHealthKit( entity player, entity ent )
{
	string entityClassName = ent.GetClassName()

	Assert( entityClassName in svGlobal.onTouchHealthKitCallbacks )

	array<bool functionref( entity player, entity healthpack )> callbackFuncs = svGlobal.onTouchHealthKitCallbacks[ entityClassName ]
	foreach ( callbackFunc in callbackFuncs )
	{
		bool result = callbackFunc( player, ent )
		if ( result )
			return result
	}

	return false
}

bool function ShouldPlayEMPEffectEvenWhenDamageIsZero( entity ent, entity attacker )
{
	if ( ent.IsTitan() && IsTitanWithinBubbleShield( ent ) )
		return false

	if  ( !IsValid( attacker ) )
		return true

	if ( attacker.GetTeam() != ent.GetTeam() )
		return true

	return false
}

void function CodeCallback_OnPlayerGrappled( entity player, entity victim )
{
	if ( victim.GetTeam() != player.GetTeam() )
	{
		if ( victim.p.lastGrappledTime + TITAN_GRAPPLE_DEBOUNCE_TIME < Time() )
		{
			if ( player.IsTitan() )
			{
				victim.TakeDamage( TITAN_GRAPPLE_DAMAGE, player, player, { origin = victim.EyePosition(), scriptType = DF_GIB, damageSourceId = eDamageSourceId.titan_grapple } )

				if ( victim.IsTitan() )
				{
					entity soul = victim.GetTitanSoul()
					if ( soul == null )
						soul = victim

					float fadeTime = 0.5
					StatusEffect_AddTimed( soul, eStatusEffect.dodge_speed_slow, 0.75, 0.9 + fadeTime, fadeTime )
					StatusEffect_AddTimed( soul, eStatusEffect.move_slow, 0.75, 0.9 + fadeTime, fadeTime )
				}
			}

			if ( victim.IsPlayer() )
			{
				if ( player.IsTitan() )
					MessageToPlayer( victim, eEventNotifications.Grapple_WasGrappled_ByTitan )
				else
					MessageToPlayer( victim, eEventNotifications.Grapple_WasGrappled_ByPilot )
			}
		}

		victim.p.lastGrappledTime = Time()
	}
}

void function CodeCallback_OnProjectileGrappled( entity player, entity projectile )
{

}

void function DamageInfo_ScaleDamage( var damageInfo, float scalar )
{
	DamageInfo_SetDamage( damageInfo, DamageInfo_GetDamage( damageInfo ) * scalar )
}

string function CodeCallback_CheckPassThroughAddsMods( entity player, entity hitEnt, string currWeaponName )
{
	if ( !IsValid( player ) )
		return ""

	if ( StatusEffect_Get( hitEnt, eStatusEffect.pass_through_amps_weapon ) > 0 )
	{
		array<string> mods = GetWeaponBurnMods( currWeaponName )
		if ( mods.len() > 0 )
			return mods[0]
	}
	return ""
}

void function Generic_NPCTookDamage( entity npc, damageInfo, TitanDamage titanDamage )
{
	Assert( !npc.IsTitan() )
	Assert( DamageInfo_GetDamage( damageInfo ) > 0 )
	Assert( IsAlive( npc ) )

	bool critHit = false
	if ( CritWeaponInDamageInfo( damageInfo ) )
		critHit = IsCriticalHit( DamageInfo_GetAttacker( damageInfo ), npc, DamageInfo_GetHitBox( damageInfo ), DamageInfo_GetDamage( damageInfo ), DamageInfo_GetDamageType( damageInfo ) )

	if ( critHit )
		DamageInfo_AddCustomDamageType( damageInfo, DF_CRITICAL )

	titanDamage.shieldDamage = NPCShieldHealthUpdate( npc, damageInfo, critHit )
}


int function NPCShieldHealthUpdate( entity npc, damageInfo, bool critHit )
{
	if ( npc.GetShieldHealth() <= 0 )
		return 0

	if ( DamageInfo_GetDamageSourceIdentifier( damageInfo ) == damagedef_suicide )
		return 0

	if ( DamageInfo_GetForceKill( damageInfo ) )
	{
		npc.SetShieldHealth( 0 )
		return 0
	}
	else if ( DamageInfo_GetCustomDamageType( damageInfo ) & DF_BYPASS_SHIELD )
	{
		return 0
	}

	DamageInfo_AddCustomDamageType( damageInfo, DF_SHIELD_DAMAGE )
	return int( ShieldModifyDamage( npc, damageInfo ) )
}

#if MP
// taken from sp/sh_sp_dialogue.gnut, with some sp-exclusive stuff removed

// called by code when an animation does { event AE_SV_VSCRIPT_CALLBACK FrameNumber "some string" }
// and by a script function OnFootstep, apparently.
void function CodeCallback_OnServerAnimEvent( entity ent, string eventName )
{
	PerfStart( PerfIndexServer.CB_OnServerAnimEvent )
	if ( HasAnimEvent( ent, eventName ) )
		thread RunAnimEventCallbacks( ent, eventName )

	if ( eventName in svGlobal.globalAnimEventCallbacks )
	{
		thread svGlobal.globalAnimEventCallbacks[ eventName ]( ent )
		PerfEnd( PerfIndexServer.CB_OnServerAnimEvent )
		return
	}


	// couldn't find this eventName on the ent or the global anim events,
	// so try breaking it down. If we didn't find it, it means
	// script needs to handle the event, even if it is just to
	// do nothing with it

	array<string> tokens = split( eventName, ":" )
	string tokenName = tokens[0]

	switch ( tokenName )
	{
		case "worldsound":
			GlobalAnimEventWithStringParameter_WorldSound( ent, tokens[1] )
			break

		case "signal":
			SendSignalFromTokens( ent, tokens )
			break

		case "flagset":
			GlobalAnimEventWithStringParameter_FlagSet( ent, tokens[1] )
			break

		//case "dialogue":
		//	// Make sure that animation triggered dialogue uses the correct priority and skips the queue
		//	string name = tokens[1]
		//	Assert( file.registeredDialogIDs.find( name ) >= 0, "Dialogue line " + name + " is not registered" )
		//	int aliasID = file.registeredDialogIDs.find( name )
		//	DialogueData data = file.registeredDialog[ aliasID ]
		//	Assert( data.priority == PRIORITY_NO_QUEUE, "Dialogue " + name + " triggered via qc must use PRIORITY_NO_QUEUE" )
		//	thread PlayDialogue( name, ent )
		//	break

		case "fireViperSalvo":
			int value = tokens[1].tointeger()
			ent.Signal( "fireSalvo", { num = value } )
			break

		//case "conversation":
		//	thread PlayerConversation( tokens[1], GetPlayerArray()[0], ent )
		//	break
	}

	PerfEnd( PerfIndexServer.CB_OnServerAnimEvent )
}
#endif // #if MP