forge/docs/ECONOMY_USAGE_GUIDE.md

Economy Usage Guide

The economy server addon owns Arma-world service behavior for fuel, medical, and repair interactions. It does not own money state. Money mutations go through extension-backed bank and organization hot state before the world effect is applied.

Dependencies

• forge_server_common for logging, formatting, and player lookup.
• forge_server_bank for personal medical billing.
• forge_server_org for organization-funded services and medical fallback debt.
• forge_client_actor and forge_client_notifications for targeted client responses.

Fuel

Fuel is organization-funded.

When refueling stops, fnc_initFEconomyStore.sqf calculates the fuel delta and cost, charges the player's organization through OrgStore chargeCheckout, and syncs the organization patch to online members. If organization funds cannot cover the refuel, the vehicle is rolled back to the fuel level it had when the session started.

Garage UI refuel requests use the server RefuelService event. The fuel store calculates missing fuel from the vehicle config fuelCapacity, charges the player's organization, and fills the vehicle only after the organization charge succeeds.

The refuel price per liter is controlled by fuelCost. The mission setup UI can override it at startup; otherwise a mission Params entry named fuelCost or CfgMissions >> ServicePricing >> fuelCost is used.

Repair

Repair is organization-funded.

Use the repair service event:

[QEGVAR(economy,RepairService), [_target, _unit, _cost]] call CBA_fnc_serverEvent;

_cost is optional. Passing -1 uses the configured service repair cost. The target is only repaired after the organization charge succeeds.

The client garage UI forwards selected nearby vehicle repair requests through the same event.

The default repair charge is controlled by serviceRepairCost. A direct service event can still pass a concrete _cost to override that request.

Rearm

Rearm is organization-funded.

Use the rearm service event:

[QEGVAR(economy,RearmService), [_target, _unit, _cost]] call CBA_fnc_serverEvent;

_cost is optional. Passing -1 uses the configured service rearm cost. The target is only rearmed after the organization charge succeeds. setVehicleAmmo has global effects, but the ammo is only added to local turrets, so the service broadcasts the ammo reset after billing succeeds.

The client garage UI forwards selected nearby vehicle rearm requests through the same event.

The default rearm charge is controlled by serviceRearmCost. A direct service event can still pass a concrete _cost to override that request.

Medical

Medical is player-funded first.

When a heal is requested, fnc_initMEconomyStore.sqf uses this billing order:

1. Charge the player's bank balance when it can cover the medical fee.
2. Otherwise charge the player's cash when it can cover the fee.
3. If neither personal balance can cover the fee, charge organization funds.
4. When organization funds cover the fallback charge, record the same amount as debt on the player's organization credit line.

The heal only completes after one of those charges succeeds. If personal billing is unavailable, the heal does not fall back to organization funds because the server cannot verify that the player is unable to cover the fee.

Medical pricing uses:

• medicalHealCost for heal billing.
• medicalSpawnCost for medical respawn billing. Respawn billing is best-effort so a failed charge does not block the respawn flow.

Both values can be set in the mission setup UI, mission Params, or CfgMissions >> ServicePricing.

Medical Debt Repayment

Medical fallback debt uses the existing organization credit-line repayment flow. The organization treasury is reduced when the service is rendered, and the player's credit-line amount_due increases by the medical fee. When the player repays through the bank credit-line repayment action, player bank funds are moved back into the organization treasury.

Hot-Cache Boundary

The economy addon should stay server-authoritative for world effects such as vehicle fuel, vehicle repair, healing, respawn placement, and death inventory movement. Bank and organization balances should continue to mutate through the extension-backed hot-cache services.