[neeerp]

Row 205, NX source 3: NX earned by playing, at env rates that default to off.

• net::rates::nx() reads two env rates. Each is a positive integer, and 0 (off) when unset or invalid:
  • RUSTMS_NX_PER_KILL: NX Credit for each kill the player loots, so one award per kill even in a party.
  • RUSTMS_NX_PER_HOUR: NX Credit for each hour connected to a channel. It comes with a pink line, "You earned N NX Credit for an hour of play.", which is skipped while the player is in the Cash Shop.
• The client actor keeps a running total (nx_earned) and moves it to the account with db::cash_shop::grant at each 60 s autosave, on entering the Cash Shop (before the balances are read) and on logout or channel change. Kills therefore cost no database write of their own. If a bank fails, the total is kept for the next try.
• The harness world sets RUSTMS_NX_PER_KILL: "1". No other test both kills and checks a balance (checked with grep).

Tests:

• Unit test nx_rates_are_off_unless_set_to_a_positive_number.
• Harness test earned_nx: kill 3 snails, enter the shop, and the NX Credit is 3.
• beginner_skills, cash_shop_purchases, cash_coupons, gm_commands and monster_book pass.