building_spawnLoot.sqf (credit to Seven) adapted for Tavi 2.

private["_obj","_type","_config","_positions","_iPos","_nearBy","_itemType","_itemTypes","_itemChances","_lootChance","_weights","_cntWeights","_index","_LootClass"];

_obj =          _this select 0;
_type =         typeOf _obj;
_config =       configFile >> "CfgBuildingLoot" >> _type;
_positions =    [] + getArray (_config >> "lootPos");
//_itemTypes =  [] + getArray (_config >> "itemType"); // Default System
_lootChance =   getNumber (_config >> "lootChance");

//------------------//
//CUSTOM LOOT SPAWNS//
//------------------//
_itemTypes = []; //Initialise array
_itemChance = []; //Initialise array

diag_log "SPAWNING WITH CUSTOM LOOT";//Remove This line after testing

switch (_type) do { //Assign building classes
    case "Land_HouseV_1I4": { _LootClass = "Residential"; };
    case "Land_kulna": { _LootClass = "Residential"; };
    case "Land_Ind_Workshop01_04": { _LootClass = "Industrial"; };
    case "Land_hut06": { _LootClass = "Residential"; };
    case "Land_Hlidac_budka": { _LootClass = "Residential"; };
    case "Land_HouseV2_02_Interier": { _LootClass = "Residential"; };
    case "Land_A_Pub_01": { _LootClass = "Residential"; };
    case "Land_Shed_wooden": { _LootClass = "Residential"; };
    case "Land_HouseBlock_A1_1": { _LootClass = "Residential"; };
    case "Land_A_MunicipalOffice": { _LootClass = "Residential"; };
    case "Land_ruin_01": { _LootClass = "Residential"; };
    case "Land_HouseV2_04_interier": { _LootClass = "Residential"; };
    case "Land_HouseV2_01A": { _LootClass = "Residential"; };
    case "Land_psi_bouda": { _LootClass = "Residential"; };
    case "Land_KBud": { _LootClass = "Residential"; };
    case "Land_A_Castle_Bergfrit": { _LootClass = "Residential"; };
    case "Land_A_Castle_Stairs_A": { _LootClass = "Residential"; };
    case "Land_A_Castle_Gate": { _LootClass = "Residential"; };
    case "Land_sara_domek_zluty": { _LootClass = "Residential"; };
    case "Land_Church_01": { _LootClass = "Residential"; };
    case "Land_Church_03": { _LootClass = "Residential"; };
    case "Land_HouseB_Tenement": { _LootClass = "Residential"; };
    case "Land_Panelak": { _LootClass = "Residential"; };
    case "Land_Panelak2": { _LootClass = "Residential"; };
    case "Land_rail_station_big": { _LootClass = "Residential"; };
    case "Land_A_Office01": { _LootClass = "Residential"; };
    case "Land_A_Office02": { _LootClass = "Residential"; };
    case "Land_Ind_Workshop01_01": { _LootClass = "Industrial"; };
    case "Land_Ind_Garage01": { _LootClass = "Industrial"; };
    case "Land_Ind_Workshop01_02": { _LootClass = "Industrial"; };
    case "Land_Ind_Workshop01_L": { _LootClass = "Industrial"; };
    case "Land_Hangar_2": { _LootClass = "Industrial"; };
    case "Land_A_FuelStation_Build": { _LootClass = "Industrial"; };
    case "Land_Shed_Ind02": { _LootClass = "Industrial"; };
    case "Land_Misc_PowerStation": { _LootClass = "Industrial"; };
    case "Land_Shed_W01": { _LootClass = "Industrial"; };
    case "Land_Tovarna2": { _LootClass = "Industrial"; };
    case "Land_Ind_Vysypka": { _LootClass = "Industrial"; };
    case "Land_A_BuildingWIP": { _LootClass = "Industrial"; };
    case "Land_A_TVTower_Base": { _LootClass = "Industrial"; };
    case "Land_Misc_Cargo1Ao": { _LootClass = "Industrial"; };
    case "Land_Misc_Cargo1Bo": { _LootClass = "Industrial"; };
    case "Land_Nav_Boathouse": { _LootClass = "Industrial"; };
    case "Land_wagon_box": { _LootClass = "Industrial"; };
    case "Land_Rail_House_01": { _LootClass = "Industrial"; };
    case "Land_A_GeneralStore_01a": { _LootClass = "Supermarket"; };
    case "Land_A_GeneralStore_01": { _LootClass = "Supermarket"; };
    case "Land_A_Hospital": { _LootClass = "Hospital"; };
    case "MASH": { _LootClass = "Hospital"; };
    case "MASH_EP1": { _LootClass = "Hospital"; };
    case "USMC_WarfareBFieldhHospital": { _LootClass = "Hospital"; };
    case "Land_a_stationhouse": { _LootClass = "Military"; };
    case "Land_Mil_ControlTower": { _LootClass = "Military"; };
    case "Land_SS_hangar": { _LootClass = "Military"; };
    case "Land_Mil_House": { _LootClass = "Military"; };
    case "Camp": { _LootClass = "Military"; };
    case "CampEast": { _LootClass = "Military"; };
    case "CampEast_EP1": { _LootClass = "Military"; };
    case "Land_Mil_Barracks_i": { _LootClass = "MilitarySpecial"; };
    case "Land_Misc_deerstand": { _LootClass = "Military"; };
    case "Land_stodola_old_open": { _LootClass = "Farm"; };
    case "Land_Farm_Cowshed_a": { _LootClass = "Farm"; };
    case "Land_stodola_open": { _LootClass = "Farm"; };
    case "Land_Barn_W_01": { _LootClass = "Farm"; };
    case "Land_Mil_Barracks": { _LootClass = "Military"; };
    case "Land_Mil_Barracks_L": { _LootClass = "Military"; };
    case "Land_Barn_W_02": { _LootClass = "Farm"; };
    default { _LootClass = "Residential"; };
};

switch (_LootClass) do { //Find correct loot
    case "Residential": {
        _itemTypes = [
            ["ItemSodaMdew","magazine"],
            ["ItemWatch","generic"],
            ["ItemCompass","generic"],
            ["ItemMap","weapon"],
            ["Makarov","weapon"],
            ["Colt1911","weapon"],
            ["ItemFlashlight","generic"],
            ["ItemKnife","generic"],
            ["ItemMatchbox","generic"],
            ["","generic"],
            ["LeeEnfield","weapon"],
            ["revolver_EP1","weapon"],

            ["CZ_VestPouch_EP1","object"], // 12
            ["DZ_CivilBackpack_EP1","object"], // 12-0
            ["DZ_ALICE_Pack_EP1","object"],
            ["Winchester1866","weapon"],
            ["WeaponHolder_ItemTent","object"],
            ["","military"],
            ["","trash"],
            ["Crossbow","weapon"],
            ["Binocular","weapon"],
            ["PartWoodPile","magazine"],
            ["Skin_Camo1_DZ","magazine"],
            ["Skin_Sniper1_DZ","magazine"],
            ["WeaponHolder_MeleeCrowbar","object"],
            ["MR43","weapon"] // Remember the last object doesn't not need a comma
         ];
        _itemChance = [
            0.01,
            0.15,
            0.05,
            0.03,
            0.13,
            0.05,
            0.03,
            0.08,
            0.06,
            2,
            0.06,
            0.04,
            0.05, //12
            0.04, // 12-0
            0.02, //16
            0.01,
            0.01,
            0.03,
            0.5,
            0.01,
            0.06,
            0.06,
            0.01,
            0.01,
            0.08,
            0.03
        ];
    };
    case "Industrial": {
        _itemTypes = [
            ["","generic"],
            ["","trash"],
            ["","military"],
            ["WeaponHolder_PartGeneric","object"],
            ["WeaponHolder_PartWheel","object"],
            ["WeaponHolder_PartFueltank","object"],
            ["WeaponHolder_PartEngine","object"],
            ["WeaponHolder_PartGlass","object"],
            ["WeaponHolder_PartVRotor","object"],
            ["WeaponHolder_ItemJerrycan","object"],
            ["WeaponHolder_ItemHatchet","object"],
            ["ItemKnife","military"],
            ["ItemToolbox","weapon"],
            ["ItemWire","magazine"],
            ["ItemTankTrap","magazine"]
        ];
        _itemChance = [
            0.18,
            0.29,
            0.04,
            0.04,
            0.05,
            0.02,
            0.02,
            0.04,
            0.01,
            0.04,
            0.11,
            0.07,
            0.06,
            0.01,
            0.04
        ];
    };
    case "Farm": {
        _itemTypes = [
            ["WeaponHolder_ItemJerrycan","object"],
            ["","generic"],
            ["huntingrifle","weapon"],
            ["LeeEnfield","weapon"],
            ["Winchester1866","weapon"],
            ["","trash"],
            ["Crossbow","weapon"],
            ["PartWoodPile","magazine"],
            ["WeaponHolder_ItemHatchet","object"],
            ["MR43","weapon"],
            ["TrapBear","magazine"]
        ];
        _itemChance = [
            0.06,
            0.28,
            0.01,
            0.04,
            0.03,
            0.22,
            0.03,
            0.11,
            0.17,
            0.06,
            0.03
        ];
    };
    case "Supermarket": {
        _itemTypes = [
            ["ItemWatch","generic"],
            ["ItemCompass","generic"],
            ["ItemMap","weapon"],
            ["Makarov","weapon"],
            ["Colt1911","weapon"],
            ["ItemFlashlight","generic"],
            ["ItemKnife","generic"],
            ["ItemMatchbox","generic"],
            ["","generic"],
            ["LeeEnfield","weapon"],
            ["revolver_EP1","weapon"],

            ["CZ_VestPouch_EP1","object"], // 12
            ["DZ_CivilBackpack_EP1","object"], // 12-0
            ["DZ_ALICE_Pack_EP1","object"], // 16
            ["Winchester1866","weapon"],
            ["WeaponHolder_ItemTent","object"],
            ["","food"],
            ["","trash"],
            ["Crossbow","weapon"],
            ["Binocular","weapon"],
            ["PartWoodPile","magazine"],
            ["MR43","weapon"]
        ];
        _itemChance = [
            0.15,
            0.01,
            0.05,
            0.02,
            0.02,
            0.05,
            0.02,
            0.05,
            0.05,
            0.01,
            0.01,
            0.05, //12
            0.04, // 12-0
            0.02, //16
            0.01,
            0.01,
            0.3,
            0.15,
            0.01,
            0.05,
            0.02,
            0.01
        ];
    };
    case "Hospital": {
        _itemTypes =    [
            ["","trash"],
            ["","hospital"],
            ["MedBox0","object"]
        ];
        _itemChance = [
            0.2,
            1,
            0.2
        ];
    };
    case "Military": {
        _itemTypes = [
            ["M9","weapon"],
            ["M16A2","weapon"],
            ["M16A2GL","weapon"],
            ["M9SD","weapon"],
            ["AK_74","weapon"],
            ["M4A1_Aim","weapon"],
            ["AKS_74_kobra","weapon"],
            ["AKS_74_U","weapon"],
            ["AK_47_M","weapon"],
            ["M24","weapon"],
            ["M1014","weapon"],
            ["DMR","weapon"],
            ["M4A1","weapon"],
            ["M14_EP1","weapon"],
            ["UZI_EP1","weapon"],
            ["Remington870_lamp","weapon"],
            ["glock17_EP1","weapon"],
            ["MP5A5","weapon"],
            ["MP5SD","weapon"],
            ["M4A3_CCO_EP1","weapon"],
            ["Binocular","weapon"],
            ["ItemFlashlightRed","military"],
            ["ItemKnife","military"],
            ["ItemGPS","weapon"],
            ["ItemMap","military"],

            ["DZ_Assault_Pack_EP1","object"], // 16
            ["DZ_Patrol_Pack_EP1","object"], // 16
            ["DZ_Backpack_EP1","object"], // 24

            //Normal
            ["","medical"],
            ["","generic"],
            ["","military"],
            //["Body","object"],
            ["ItemEtool","weapon"],
            ["ItemSandbag","magazine"]
        ];
        _itemChance = [
            0.05,
            0.05,
            0.01,
            0.02,
            0.15,
            0.01,
            0.08,
            0.05,
            0.05,
            0.01,
            0.10,
            0.01,
            0.02,
            0.01,
            0.05,
            0.08,
            0.10,
            0.04,
            0.02,
            0.01,
            0.06,
            0.10,
            0.10,
            0.01,
            0.05,
            //Bags
            0.08, //16
            0.08, //16
            0.01, //DZ_Backpack_EP1 24
            0.10,
            1.00,
            2.50,
            //0.20,
            0.05,
            0.02
        ];
    };
    case "MilitarySpecial": {
        _itemTypes = [
            ["M16A2","weapon"],
            ["M16A2GL","weapon"],
            ["M249_DZ","weapon"],
            ["M9SD","weapon"],
            //["M136","weapon"],
            ["AK_74","weapon"],
            ["M4A1_Aim","weapon"],
            ["AKS_74_kobra","weapon"],
            ["AKS_74_U","weapon"],
            ["AK_47_M","weapon"],
            ["M24","weapon"],
            ["SVD_CAMO","weapon"],
            ["M1014","weapon"],
            ["M107_DZ","weapon"],
            ["DMR","weapon"],
            ["M4A1","weapon"],
            ["M14_EP1","weapon"],
            ["UZI_EP1","weapon"],
            ["Remington870_lamp","weapon"],
            ["glock17_EP1","weapon"],
            ["M240_DZ","weapon"],
            ["M4A1_AIM_SD_camo","weapon"],
            ["M16A4_ACG","weapon"],
            ["M4A1_HWS_GL_camo","weapon"],
            ["Mk_48_DZ","weapon"],
            ["M4A3_CCO_EP1","weapon"],
            //Ammo
            ["AmmoBoxSmall_556","object"],
            ["AmmoBoxSmall_762","object"],

            ["NVGoggles","weapon"],
            ["Binocular","weapon"],
            ["ItemFlashlightRed","military"],
            ["ItemKnife","military"],
            ["ItemGPS","weapon"],
            ["ItemMap","military"],
            ["Binocular_Vector","military"],

            ["DZ_Assault_Pack_EP1","object"], // 16
            ["DZ_Patrol_Pack_EP1","object"], // 16
            ["DZ_Backpack_EP1","object"], // 18

            ["","medical"],
            ["","generic"],
            ["","military"],
            //["Body","object"],
            ["PipeBomb","magazine"]
        ];
        _itemChance = [
            0.10,
            0.05,
            0.01,
            0.02,
            //0.01, //m136
            0.10,
            0.02,
            0.10,
            0.10,
            0.10,
            0.01,
            0.01,
            0.20,
            0.01,
            0.02,
            0.10,
            0.03,
            0.20,
            0.10,
            0.20,
            0.01,
            0.04,
            0.05,
            0.02,
            0.01,
            0.08,
            0.04,
            0.02,
            0.01, //NVGoggles
            0.10,
            0.05,
            0.15,
            0.01, //ItemGPS
            0.03,
            0.01,
            //Bags
            0.08, //16
            0.08, //16
            0.06, //18
            0.30,
            1.00,
            5.00, //military
            //0.20,
            0.01 //PipeBomb
        ];
    };
};
//------------------//
//CUSTOM LOOT SPAWNS//
//------------------//
{
    if ((random 1) < _lootChance) then {
        _iPos = _obj modelToWorld _x;
        _nearBy = nearestObjects [_iPos, ["WeaponHolder","WeaponHolderBase"], 1];
        if (count _nearBy == 0) then {
            private["_index"];
            _weights = [_itemTypes,_itemChance] call fnc_buildWeightedArray;
            _index = _weights call BIS_fnc_selectRandom;
            _itemType = _itemTypes select _index;
            [_itemType select 0, _itemType select 1 , _iPos, 0.0]  call spawn_loot;
        };
    };
} forEach _positions;