Shop Evaluation

From run-state.md and game state, determine:

• Infinite Readiness: Not Started / Building / Almost Ready / Infinite Ready
• Missing categories: Exhaust / Draw / Energy — what does the deck still need?
• Deck size: Check against Deck Size Rules in the framework
• Basics remaining: How many Defends / Strikes left to remove?
• Gold budget: Check Gold Budget by Act in the framework

Step 2: Evaluate Card Removal (FIRST PRIORITY)

If shop.card_removal exists and is_used is false:

1. Card removal is almost always the best purchase for infinite builds
2. Removal priority (from framework):
   • Curses → always remove
   • Defends → highest priority basic removal
   • Strikes → next priority after Defends gone
   • Status cards stuck in deck
   • Non-infinite cards added by mistake
3. Skip removal ONLY if all remaining cards serve the infinite AND deck ≤ 12

When shop_remove_card opens GRID_CARD_SELECT:

• Pick the highest-priority removal target per framework
• Use ./sts2 grid_select_card <card_id> to remove
• Or ./sts2 grid_select_skip to cancel (only if no valid target)

Step 3: Evaluate Cards

For each shop.cards[] item where is_stocked is true:

1. Look up the card's tier in the Card Tier List (framework)
2. Check if it fills a missing infinite category
3. Apply Deck Size Rules — skip if deck is too large (20+)
4. Check price against Purchase Value Thresholds (framework)

Buy conditions:

• S-tier infinite component: Any price (Offering, Dark Embrace, Feel No Pain, etc.)
• A-tier card that fills missing category: ≤ 150g
• A-tier card (general): ≤ 120g
• B-tier card (critical gap only): ≤ 80g
• If readiness is "Infinite Ready": Skip ALL cards (don't add noise)

Step 4: Evaluate Relics

For each shop.relics[] item where is_stocked is true:

1. Check S-Tier Relics in framework — energy relics, Unceasing Top, Runic Pyramid always worth buying
2. Check A-Tier Relics — Charon's Ashes, Burning Sticks, Mummified Hand etc.
3. Check Relic Traps — NEVER buy Velvet Choker or Fiddle (kills infinite)
4. Price thresholds: ≤ 300g for S-tier (energy, Unceasing Top), ≤ 200g for A-tier

Important: Card removal is higher priority than relics. Don't skip removal to buy a relic.

Step 5: Evaluate Potions

For each shop.potions[] item where is_stocked is true:

1. Check if potion belt has empty slots (if full, skip)
2. Buy only if boss or elite is within next 2-3 floors
3. Price threshold: ≤ 75g
4. Priority: Energy potions (help engine setup), block potions (survive setup turns), damage potions (for boss)

Step 6: Purchase Order

Execute purchases in this order (highest value first):

1. Card removal (ALWAYS buy if available and valid target exists)
2. S-tier infinite card (any price)
3. Energy relic / Unceasing Top / Runic Pyramid (≤ 300g)
4. A-tier card that fills missing category (≤ 150g)
5. Infinite-synergy relic (≤ 200g)
6. A-tier card (general fit) (≤ 120g)
7. Useful potion (≤ 75g, boss/elite soon)
8. B-tier card for critical gap (≤ 80g)
9. Skip remaining items

After each purchase, re-check remaining gold before next purchase.

Gold Budget by Act

Commands

./sts2 shop_buy_card <card_id>      # Buy a card
./sts2 shop_buy_relic <relic_id>    # Buy a relic
./sts2 shop_buy_potion <potion_id>  # Buy a potion
./sts2 shop_remove_card             # Buy card removal → GRID_CARD_SELECT
./sts2 proceed                      # Leave shop

Output Format

[SHOP: Gold 187, Building infinite (16 cards, 2 Defends left). Card removal (75g) — removing Defend.]
> ./sts2 shop_remove_card
> ./sts2 grid_select_card DEFEND

[SHOP: Gold 112. Dark Embrace (95g) fills missing Draw engine — buying.]
> ./sts2 shop_buy_card DARK_EMBRACE

[SHOP: Gold 17. Remaining items too expensive. Leaving.]
> ./sts2 proceed

Related Skills