CONST_MAX_NUM_PRESTIGE_NERF = 32;    // The max number of nerf options

CONST_NERF_TABLE = "mp/alien/prestige_nerf.csv";
CONST_NERF_TABLE_IDX_COLUMN = 0;
CONST_NERF_TABLE_REF_COLUMN = 1;

CONST_NERF_SCALAR_DAMAGE_TAKEN    = 1.33; // Greater than 1 to make player takes more damage from aliens
CONST_NERF_SCALAR_THREATBIAS      = 500;  // Greater than 0 to make aliens attack this particular player more often
CONST_NERF_SCALAR_WALLET_SIZE     = 0.5;  // Less than 1 to make the wallet size smaller;
CONST_NERF_SCALAR_EARN_LESS_MONEY = 0.75; // Less then 1 to make player earn less money
CONST_NERF_SCALAR_WEAPON_DAMAGE   = 0.66; // Less than 1 to make player do less damage on aliens;
CONST_NERF_NO_CLASS_ALLOWED       = 1.0;  // 1 = can't select a class, 0 or undefined means you can  
CONST_NERF_PISTOLS_ONLY 		  = 1.0;  // 1 = can't but weapons, 0 or undefined means you can  
CONST_NERF_SCALAR_HEALTH_REGEN	  = 1.5;  // slow health regen by 50%
CONST_NERF_SCALAR_MOVE_SLOWER	  = 0.7;  // movement scalar
CONST_NERF_NO_ABILITIES	          = 1.0;  // 1 = can't use Left and Right Dpad abilities, 0 = you can use them
CONST_NERF_SCALAR_MIN_AMMO		  = 0.25;  // scalar of max stock for give ammo calls
CONST_NERF_NO_DEPLOYABLES		  = 1.0;  // 1 = can't use Up and Down Dpad abilities, 0 = you can use them

// Those name references need to match the "reference string" column in the prestige_nerf csv table
CONST_REF_NO_NERF             = "none";
CONST_REF_TAKE_MORE_DAMAGE    = "nerf_take_more_damage";
CONST_REF_HIGHER_THREATBIAS   = "nerf_higher_threatbias";
CONST_REF_SMALLER_WALLET      = "nerf_smaller_wallet";
CONST_REF_EARN_LESS_MONEY     = "nerf_earn_less_money";   // This one is not in the prestige_nerf csv table. It is the additional nerf for smaller wallet
CONST_REF_LOWER_WEAPON_DAMAGE = "nerf_lower_weapon_damage";
CONST_REF_NO_CLASS_ALLOWED    = "nerf_no_class";
CONST_REF_PISTOLS_ONLY		  = "nerf_pistols_only";
CONST_REF_SLOW_HEALTH_REGEN	  = "nerf_fragile";
CONST_REF_MOVE_SLOWER		  = "nerf_move_slower";
CONST_REF_NO_ABILITIES		  = "nerf_no_abilities";
CONST_REF_MIN_AMMO			  = "nerf_min_ammo";
CONST_REF_NO_DEPLOYABLES  	  = "nerf_no_deployables";

init_prestige()
{
	nerf_func = [];
	
	nerf_func[CONST_REF_NO_NERF]             = ::empty;
	nerf_func[CONST_REF_TAKE_MORE_DAMAGE]    = ::increase_damage_scalar;
	nerf_func[CONST_REF_HIGHER_THREATBIAS]   = ::increase_threatbias;
	nerf_func[CONST_REF_SMALLER_WALLET]      = ::reduce_wallet_size_and_money_earned;
	nerf_func[CONST_REF_LOWER_WEAPON_DAMAGE] = ::lower_weapon_damage;
	nerf_func[CONST_REF_NO_CLASS_ALLOWED] 	 = ::no_class;
	nerf_func[CONST_REF_PISTOLS_ONLY] 		 = ::pistols_only;
	nerf_func[CONST_REF_SLOW_HEALTH_REGEN]   = ::slow_health_regen;
	nerf_func[CONST_REF_MOVE_SLOWER]		 = ::move_slower;
	nerf_func[CONST_REF_NO_ABILITIES]		 = ::no_abilities;
	nerf_func[CONST_REF_MIN_AMMO]		 	 = ::min_ammo;
	nerf_func[CONST_REF_NO_DEPLOYABLES]		 = ::no_deployables;
	
	level.prestige_nerf_func = nerf_func;

	table_list = [];

	for( i = 0; i < CONST_MAX_NUM_PRESTIGE_NERF; i++ )
	{
		nerfRef = TableLookupByRow( CONST_NERF_TABLE, i, CONST_NERF_TABLE_REF_COLUMN );

		if( !IsDefined( nerfRef ) || nerfRef == "" )
			break;
		
		table_list[table_list.size] = nerfRef;
	}

	level.nerf_list = table_list;
}

init_player_prestige()
{		
	init_nerf_scalar();
	
	if ( is_relics_enabled() )
		nerf_based_on_selection();
}

init_nerf_scalar()
{
	nerf_scalars = [];
	
	nerf_scalars[CONST_REF_TAKE_MORE_DAMAGE]    = 1.0;
	nerf_scalars[CONST_REF_HIGHER_THREATBIAS]   = 0;   //<NOTE J.C> Default threatbias value is 0
	nerf_scalars[CONST_REF_SMALLER_WALLET]      = 1.0;
	nerf_scalars[CONST_REF_EARN_LESS_MONEY]     = 1.0;              
	nerf_scalars[CONST_REF_LOWER_WEAPON_DAMAGE] = 1.0;
	nerf_scalars[CONST_REF_NO_CLASS_ALLOWED] 	= 0;  // 0 = can use classes
	nerf_scalars[CONST_REF_PISTOLS_ONLY] 		= 0;  // 0 = not pistols only, can buy weapons
	nerf_scalars[CONST_REF_SLOW_HEALTH_REGEN]   = 1.0; // default health regen scalar is 1
	nerf_scalars[CONST_REF_MOVE_SLOWER]	 		= 1.0; //Move speed scalar
	nerf_scalars[CONST_REF_NO_ABILITIES]		= 0;  // 0 = can use abilities
	nerf_scalars[CONST_REF_MIN_AMMO]			= 1.0;
	nerf_scalars[CONST_REF_NO_DEPLOYABLES]		= 0; // 0 = can use abilities
	
	self.nerf_scalars = nerf_scalars;
	self.activated_nerfs = [];
}

nerf_based_on_selection()
{

	foreach( nerf in level.nerf_list )
	{
		if ( self alienscheckisrelicenabled( nerf ) )
		{
			activate_nerf( nerf );
		}
	}
}

activate_nerf( reference ) 
{
	register_nerf_activated( reference );
	
	[[level.prestige_nerf_func[reference]]](); 
}

nerf_already_activated( reference )  
{ 
	return common_scripts\utility::array_contains( self.activated_nerfs, reference ); 
}

register_nerf_activated( reference ) 
{ 
	self.activated_nerfs[self.activated_nerfs.size] = reference;
}

reduce_wallet_size_and_money_earned()
{
	reduce_wallet_size();
	
	reduce_money_earned();
}

is_relics_enabled()
{
	if ( maps\mp\alien\_utility::is_chaos_mode() )
		return false;

	return true;		
}

is_no_nerf( reference ) { return reference == "none"; }
get_num_nerf_selected() { return self.activated_nerfs.size; }

empty() {}
increase_damage_scalar() { set_nerf_scalar( CONST_REF_TAKE_MORE_DAMAGE    , CONST_NERF_SCALAR_DAMAGE_TAKEN ); }
increase_threatbias()    { set_nerf_scalar( CONST_REF_HIGHER_THREATBIAS   , CONST_NERF_SCALAR_THREATBIAS ); }
reduce_wallet_size()     { set_nerf_scalar( CONST_REF_SMALLER_WALLET      , CONST_NERF_SCALAR_WALLET_SIZE ); }
reduce_money_earned()    { set_nerf_scalar( CONST_REF_EARN_LESS_MONEY     , CONST_NERF_SCALAR_EARN_LESS_MONEY ); }
lower_weapon_damage()    { set_nerf_scalar( CONST_REF_LOWER_WEAPON_DAMAGE , CONST_NERF_SCALAR_WEAPON_DAMAGE ); }
no_class()  	  		 { set_nerf_scalar( CONST_REF_NO_CLASS_ALLOWED    , CONST_NERF_NO_CLASS_ALLOWED ); }
pistols_only()    		 { set_nerf_scalar( CONST_REF_PISTOLS_ONLY 		  , CONST_NERF_PISTOLS_ONLY ); }
slow_health_regen()		 { set_nerf_scalar( CONST_REF_SLOW_HEALTH_REGEN	  , CONST_NERF_SCALAR_HEALTH_REGEN ); }
move_slower()			 { set_nerf_scalar( CONST_REF_MOVE_SLOWER		  , CONST_NERF_SCALAR_MOVE_SLOWER ); }
no_abilities()			 { set_nerf_scalar( CONST_REF_NO_ABILITIES		  , CONST_NERF_NO_ABILITIES ); }
min_ammo()				 { set_nerf_scalar( CONST_REF_MIN_AMMO			  , CONST_NERF_SCALAR_MIN_AMMO ); }
no_deployables()		 { set_nerf_scalar( CONST_REF_NO_DEPLOYABLES	  , CONST_NERF_NO_DEPLOYABLES ); }

set_nerf_scalar( field, value ) { self.nerf_scalars[field] = value; }
get_nerf_scalar( field )        { return self.nerf_scalars[field]; }
get_selected_nerf( index ) 	    { return self getcoopplayerdata( "alienPlayerLoadout", "nerfs", index ); }

// Interface function for external systems
prestige_getDamageTakenScalar()   { return get_nerf_scalar( CONST_REF_TAKE_MORE_DAMAGE ); }
prestige_getThreatbiasScalar()    { return get_nerf_scalar( CONST_REF_HIGHER_THREATBIAS ); }
prestige_getWalletSizeScalar()    { return get_nerf_scalar( CONST_REF_SMALLER_WALLET ); }
prestige_getMoneyEarnedScalar()   { return get_nerf_scalar( CONST_REF_EARN_LESS_MONEY ); }
prestige_getWeaponDamageScalar()  { return get_nerf_scalar( CONST_REF_LOWER_WEAPON_DAMAGE ); }
prestige_getNoClassAllowed()  	  { return get_nerf_scalar( CONST_REF_NO_CLASS_ALLOWED ); }
prestige_getPistolsOnly()  		  { return get_nerf_scalar( CONST_REF_PISTOLS_ONLY ); }
prestige_getSlowHealthRegenScalar() { return get_nerf_scalar( CONST_REF_SLOW_HEALTH_REGEN ); }
prestige_getMoveSlowScalar()  	  { return get_nerf_scalar( CONST_REF_MOVE_SLOWER ); }
prestige_getNoAbilities()		  { return get_nerf_scalar( CONST_REF_NO_ABILITIES ); }
prestige_getMinAmmo()			  { return get_nerf_scalar( CONST_REF_MIN_AMMO ); }
prestige_getNoDeployables()		  { return get_nerf_scalar( CONST_REF_NO_DEPLOYABLES ); }