I am trying to have modded items in the chests of lost cites mod, and there is this problem I am facing, in which a mod called Apocalypse Now automatically injects its mod items into the chests without having a need of datapack, which suggests its being done internally within the mod. What I have found is that it is overwriting loot tables entirely and by that, lootjs/kubejs or the datapacks of the other two modsanother mod does not inject their itmes.
The other two mods are Dungeon Artifacts andThat another mod is Timeless and Classics Zero, and I made the datapacks and the json file (later) for thesethis mods by taking help of multiple chatbots, since I lack knowledge on making datapacks or json file for the lootjs/kubejs to overwrite or just add your loot to the loot tables without overwriting it, you may check the datapacks and that one json file which only has items written from only one mod which is tacz, to test if it works. I will providehave the linkcontents of themthose files written down below, I do believe maybe the datapacks are not made correctly, fromby which I made the json file for the kubejs, so maybe both are made wrong, so please check them if you can see if there are errors or not in those 3 files.
Drive link:https://drive.google.com/drive/folders/1NsyplXzfxh0Dmt3KxyvQ0SFPnnZg3xnn?usp=sharing
- Datapack for the timeless and classics zero mod:
I don't know if this is the place to ask this, I have asked this same thing in reddit but no one commented on my posts, maybe due to this issue being too technical. Please help me with this.
a. add_tacz_apartment.json
"type": "forge:add_items",
"conditions": [
{
"condition": "forge:loot_table_id",
"loot_table_id": "minecraft:chests/apartament"
}
],
"items": [
{
"item": "tacz:modern_kinetic_gun",
"weight": 100,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:glock_17\\\",GunCurrentAmmoCount:7}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "Glock 17",
"italic": false
}
}
]
},
{
"item": "tacz:modern_kinetic_gun",
"weight": 6,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:uzi\\\",GunCurrentAmmoCount:25}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "Uzi",
"italic": false
}
}
]
},
{
"item": "tacz:modern_kinetic_gun",
"weight": 6,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:db_short\\\",GunCurrentAmmoCount:2}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "Sawed-off",
"italic": false
}
}
]
},
{
"item": "tacz:sight_uh1",
"weight": 8
},
{
"item": "tacz:sight_552",
"weight": 8
},
{
"item": "tacz:muzzle_silencer_phantom_s1",
"weight": 4
},
{
"item": "tacz:muzzle_compensator_trident",
"weight": 4
},
{
"item": "tacz:ammo_9mm",
"weight": 12
},
{
"item": "tacz:ammo_12g",
"weight": 10
},
{
"item": "tacz:ammo_45acp",
"weight": 4
}
]
}
b. add_tacz_lostcitychest.json
"type": "forge:add_items",
"conditions": [
{
"condition": "forge:loot_table_id",
"loot_table_id": "lostcities:chests/lostcitychest"
}
],
"items": [
{
"item": "tacz:modern_kinetic_gun",
"weight": 4,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:ak47\\\",GunCurrentAmmoCount:0}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "AK-47 (abandoned)",
"italic": false
}
}
]
},
{
"item": "tacz:modern_kinetic_gun",
"weight": 6,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:db_short\\\",GunCurrentAmmoCount:2}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "Sawed-off",
"italic": false
}
}
]
},
{
"item": "tacz:sight_rmr_dot",
"weight": 4
},
{
"item": "tacz:light_extended_mag_3",
"weight": 1
},
{
"item": "tacz:ammo_9mm",
"weight": 12
},
{
"item": "tacz:ammo_45acp",
"weight": 4
},
{
"item": "tacz:ammo_12g",
"weight": 8
}
]
}
c. add_tacz_raildungeon.json
"type": "forge:add_items",
"conditions": [
{
"condition": "forge:loot_table_id",
"loot_table_id": "lostcities:chests/raildungeonchest"
}
],
"items": [
{
"item": "tacz:modern_kinetic_gun",
"weight": 6,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:ak47\\\",GunCurrentAmmoCount:0}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "AK-47 (abandoned)",
"italic": false
}
}
]
},
{
"item": "tacz:modern_kinetic_gun",
"weight": 3,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:sks_tactical\\\",GunCurrentAmmoCount:0}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "SKS (rifle)",
"italic": false
}
}
]
},
{
"item": "tacz:modern_kinetic_gun",
"weight": 3,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:type_81\\\",GunCurrentAmmoCount:0}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "Type 81",
"italic": false
}
}
]
},
{
"item": "tacz:modern_kinetic_gun",
"weight": 1,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:aa12\\\",GunCurrentAmmoCount:0}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "AA-12 (very rare)",
"italic": false
}
}
]
},
{
"item": "tacz:modern_kinetic_gun",
"weight": 1,
"functions": [
{
"function": "minecraft:set_nbt",
"tag": "{GunId:\\\"tacz:m320\\\",GunCurrentAmmoCount:0}"
},
{
"function": "minecraft:set_name",
"name": {
"text": "M320 (very rare)",
"italic": false
}
}
]
},
{
"item": "tacz:scope_acog_ta31",
"weight": 4
},
{
"item": "tacz:scope_vudu",
"weight": 3
},
{
"item": "tacz:scope_mk5hd",
"weight": 1
},
{
"item": "tacz:muzzle_brake_cyclone_d2",
"weight": 4
},
{
"item": "tacz:sight_deltapoint_pistol",
"weight": 4
},
{
"item": "tacz:ammo_556x45",
"weight": 10
},
{
"item": "tacz:ammo_762x39",
"weight": 10
},
{
"item": "tacz:ammo_30_06",
"weight": 4
},
{
"item": "tacz:ammo_45_70",
"weight": 2
}
]
}
- loot_integration.json (file for kubejs/lootjs)
// Defensive LootJS injector — tries multiple API names and catches all errors.
// Replace your existing file with this. It will not throw TypeError on missing methods.
(function() {
function log() {
try { console.log("[KubeJS-LOOTFIX]", Array.prototype.join.call(arguments, " ")); } catch (e) {}
}
// Items to inject (same lists you used)
const taczItemsApartment = [
{ item: "tacz:sight_uh1", weight: 8 },
{ item: "tacz:sight_552", weight: 8 },
{ item: "tacz:muzzle_silencer_phantom_s1", weight: 4 },
{ item: "tacz:muzzle_compensator_trident", weight: 4 },
{ item: "tacz:ammo", weight: 12, nbt: '{AmmoId:"tacz:9mm"}' },
{ item: "tacz:ammo", weight: 10, nbt: '{AmmoId:"tacz:12g"}' },
{ item: "tacz:ammo", weight: 4, nbt: '{AmmoId:"tacz:45acp"}' },
{ item: "tacz:modern_kinetic_gun", weight: 8, nbt: '{GunId:"tacz:glock_17",GunCurrentAmmoCount:7}' },
{ item: "tacz:modern_kinetic_gun", weight: 6, nbt: '{GunId:"tacz:uzi",GunCurrentAmmoCount:25}' },
{ item: "tacz:modern_kinetic_gun", weight: 6, nbt: '{GunId:"tacz:db_short",GunCurrentAmmoCount:2}' }
];
const taczItemsRailDungeon = [
{ item: "tacz:scope_acog_ta31", weight: 4 },
{ item: "tacz:scope_vudu", weight: 3 },
{ item: "tacz:scope_mk5hd", weight: 1 },
{ item: "tacz:muzzle_brake_cyclone_d2", weight: 4 },
{ item: "tacz:sight_deltapoint_pistol", weight: 4 },
{ item: "tacz:ammo", weight: 10, nbt: '{AmmoId:"tacz:556x45"}' },
{ item: "tacz:ammo", weight: 10, nbt: '{AmmoId:"tacz:762x39"}' },
{ item: "tacz:ammo", weight: 4, nbt: '{AmmoId:"tacz:30_06"}' },
{ item: "tacz:ammo", weight: 2, nbt: '{AmmoId:"tacz:45_70"}' },
{ item: "tacz:modern_kinetic_gun", weight: 6, nbt: '{GunId:"tacz:ak47",GunCurrentAmmoCount:0}' },
{ item: "tacz:modern_kinetic_gun", weight: 3, nbt: '{GunId:"tacz:sks_tactical",GunCurrentAmmoCount:0}' },
{ item: "tacz:modern_kinetic_gun", weight: 3, nbt: '{GunId:"tacz:type_81",GunCurrentAmmoCount:0}' },
{ item: "tacz:modern_kinetic_gun", weight: 1, nbt: '{GunId:"tacz:aa12",GunCurrentAmmoCount:0}' },
{ item: "tacz:modern_kinetic_gun", weight: 1, nbt: '{GunId:"tacz:m320",GunCurrentAmmoCount:0}' }
];
const taczItemsLostCity = [
{ item: "tacz:sight_rmr_dot", weight: 4 },
{ item: "tacz:light_extended_mag_3", weight: 1 },
{ item: "tacz:ammo", weight: 12, nbt: '{AmmoId:"tacz:9mm"}' },
{ item: "tacz:ammo", weight: 4, nbt: '{AmmoId:"tacz:45acp"}' },
{ item: "tacz:ammo", weight: 8, nbt: '{AmmoId:"tacz:12g"}' },
{ item: "tacz:modern_kinetic_gun", weight: 4, nbt: '{GunId:"tacz:ak47",GunCurrentAmmoCount:0}' },
{ item: "tacz:modern_kinetic_gun", weight: 6, nbt: '{GunId:"tacz:db_short",GunCurrentAmmoCount:2}' }
];
// low-level helper: safely try to call a method on event
function tryCall(event, methodName, argsArray) {
try {
const fn = event[methodName];
if (typeof fn === "function") {
return fn.apply(event, argsArray);
}
// If fn is not a JS function, still attempt to call (some Java proxies allow direct call)
if (fn !== undefined) {
try { return fn(argsArray); } catch (e) { /* ignore */ }
}
} catch (e) {
// swallow errors so script doesn't crash
}
return null;
}
// helper: add items using a table/context object
function populateTableLikeObject(tblOrCtx, items) {
try {
// preferred API: tblOrCtx.addPool(pool => { pool.addItem(...).withNBT(...) })
if (typeof tblOrCtx.addPool === "function") {
tblOrCtx.addPool(function(pool) {
// if pool.rolls exists, set single roll
try { if (typeof pool.rolls === "function") pool.rolls([1,1]); } catch(e){}
items.forEach(function(entry) {
try {
if (entry.nbt && typeof pool.addItem === "function") {
// chain withNBT if available
const e = pool.addItem(entry.item, entry.weight || 1);
// some APIs return a wrapper with withNBT, others not - guard it
try { if (typeof e.withNBT === "function") e.withNBT(entry.nbt); } catch(e){}
} else if (typeof pool.addItem === "function") {
pool.addItem(entry.item, entry.weight || 1);
} else if (typeof pool.add === "function") {
// older variant: pool.add({ item:..., weight:... })
pool.add({ item: entry.item, weight: entry.weight || 1, nbt: entry.nbt || null });
}
} catch (errEntry) {
// skip problematic entry
}
});
});
return true;
}
// fallback: if ctx/table has add or addItem methods
if (typeof tblOrCtx.add === "function") {
try { tblOrCtx.add(items); return true; } catch(e) {}
}
if (typeof tblOrCtx.addItem === "function") {
items.forEach(function(entry) {
try {
const e = tblOrCtx.addItem(entry.item, entry.weight || 1);
try { if (entry.nbt && typeof e.withNBT === "function") e.withNBT(entry.nbt); } catch(e){}
} catch(e){}
});
return true;
}
} catch (e) {
// swallow
}
return false;
}
// Tries a bunch of method names in defensive order. Returns true on first success.
function tryModifyTable(event, tableId, items) {
// candidate API names to try, in order
const candidates = [
"modifyLootTable",
"modify_table",
"modifyTable",
"modify",
"modify_loot_table"
];
for (let i = 0; i < candidates.length; i++) {
const name = candidates[i];
try {
// Attempt to call event[name](tableId, callback)
const res = tryCall(event, name, [tableId, function(tblOrCtx) {
const ok = populateTableLikeObject(tblOrCtx, items);
if (!ok) {
// As a fallback, try to call tblOrCtx.add(items)
try { if (typeof tblOrCtx.add === "function") tblOrCtx.add(items); } catch(e) {}
}
}]);
if (res !== null) {
log("Used API:", name, "for table:", tableId);
return true;
}
} catch (err) {
// continue trying next candidate
}
}
// Final fallback: maybe event has an 'add' that accepts an object like { id, items }
try {
if (typeof event.add === "function") {
try { event.add({ id: tableId, items: items }); log("Used event.add fallback for", tableId); return true; } catch(e){}
}
} catch (e) {}
// As last resort, log event keys for debugging
try {
const keys = Object.keys(event).join(", ");
log("No supported modify API found for table", tableId, " — event keys:", keys);
} catch (e) {
log("No supported modify API found and couldn't list event keys.");
}
return false;
}
// Main entry: call inside LootJS.modifiers
LootJS.modifiers(function(event) {
try {
let did1 = tryModifyTable(event, "minecraft:chests/apartament", taczItemsApartment);
let did2 = tryModifyTable(event, "lostcities:chests/raildungeonchest", taczItemsRailDungeon);
let did3 = tryModifyTable(event, "lostcities:chests/lostcitychest", taczItemsLostCity);
log("Injection results — apartament:", !!did1, "raildungeon:", !!did2, "lostcity:", !!did3);
} catch (e) {
log("Unexpected error inside LootJS.modifiers block:", String(e));
}
});
})();
I don't know if this is the place to ask this, I have asked this same question in reddit but no one replied, maybe due to this issue being too technical. Please help me with this.