skara-brae-common/docs/openup/model/exports/use-case-model.json
Jan-Peter von Hunnius c0226df62d
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openup: EA model built + enriched - baseline, associations, joint design package
Windows/EA session per BUILD-CHECKLIST 0-6 (the planned human-gate path,
executed on the EA machine). Baseline built from EABase.eapx via
build-model.ps1 and verified per checklist 4: 3 actors, 12 UCs with
scenarios, 13 associations, 0 include connectors, 7 SS requirements,
12 realization packages / 36 elements; UC-08 MSS (9 steps) and UC-11
learn spell level (3 steps) match use-case-model.md verbatim.

Script fixes (defects 1-3 of the session log): PS 5.1 hashtable parse
error; realization UC lookup now accepts short and full use-case names.

Enrichment after a manual layout pass - model changes are surgical from
now on, re-running build-model.ps1 is forbidden (checklist 6):
- add-analysis-associations.ps1: 24 analysis associations per mapping
  2a (boundary-controller-entity; UC-04 boundary-entity) rendered via
  DiagramLinks without touching manual layout; 4 uses-dependencies to
  DomainError (UC-05/06/08/12 error paths, model-level)
- add-design-package.ps1: Analysis-Design/Design - joint component
  model (skara-brae-client, sb-api, sb-auth, sb-db, sb-core, sb-shared,
  sb-common; 10 dependencies, rule inward). Joint-model decision
  recorded in mapping 1: one model for server+client+common; client-
  side UC realizations are a future work item.

Markdown sources updated first (drift rule): mapping 1 tree + 2a
interactions + 3 design component model; checklist 6. Exports
regenerated from the model: use-case-model.json new,
uc-realizations.json re-exported (useCase full names, notes merged,
crossCutting added; element content verified equal to the
markdown-to-json generator output).

Open: XMI backup - ExportPackageXMI fails via COM (DISP_E_TYPEMISMATCH,
PS 5.1 + cscript); manual EA UI export per model/README.md option 2.
2026-10-03 19:47:59 +02:00

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{
"exportedFrom": "docs/openup/model/skara-brae.eapx (Requirements/Use Case Model)",
"actors": [
{
"name": "Administrator",
"notes": "Player with elevated rights (role = admin); may view any user\u0027s and any character\u0027s resources read-only."
},
{
"name": "Guest",
"notes": "Unauthenticated caller; only register/login are open."
},
{
"name": "Player",
"notes": "Authenticated user owning one or more characters (JWT role player)."
}
],
"useCases": [
{
"name": "UC-01 Register Account",
"notes": "Open registration. No precondition.",
"actors": [
"Guest"
],
"scenarios": [
{
"name": "Main Success Scenario",
"type": "Basic Path",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Guest submits name (3-32 chars) and password (\u003e= 6 chars)."
},
{
"actor": 0,
"text": "System verifies the name is unused -\u003e 409 CONFLICT if taken."
},
{
"actor": 0,
"text": "System hashes the password (argon2), assigns the player role and the next id, persists the user."
},
{
"actor": 0,
"text": "System issues a JWT (HS256, player role) and returns {token, user_id, name, role}."
}
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "name length invalid -\u003e 400; password too short -\u003e 400; name taken -\u003e 409; hashing/token failure -\u003e 500.",
"steps": [
]
}
]
},
{
"name": "UC-02 Authenticate",
"notes": "Login with name and password; issues a JWT with the user\u0027s real role.",
"actors": [
"Guest"
],
"scenarios": [
{
"name": "Main Success Scenario",
"type": "Basic Path",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Guest submits name and password."
},
{
"actor": 0,
"text": "System finds the user (401 if unknown) and verifies the password hash (401 on mismatch)."
},
{
"actor": 0,
"text": "System issues a JWT carrying the user\u0027s real role (admin/player) and returns {token, user_id, name, role}."
}
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "unknown name or wrong password -\u003e 401 UNAUTHORIZED; token creation failure -\u003e 500.",
"steps": [
]
}
]
},
{
"name": "UC-03 Manage Characters",
"notes": "Create, list and view characters. Admin may act for any user (read-only view).",
"actors": [
"Player",
"Administrator"
],
"scenarios": [
{
"name": "Main Success Scenario (create)",
"type": "Basic Path",
"notes": "Admin may act for any user.",
"steps": [
{
"actor": 0,
"text": "Player submits character name, race, class for their user id."
},
{
"actor": 0,
"text": "System validates the target user exists (404) and the trimmed name is 1-32 chars (400)."
},
{
"actor": 0,
"text": "System rolls stats (d6+5 base 6-16 per stat +/- race modifiers), computes max HP/energy/nerve from class, grants starting gold (50) and level-1 class spells to casters."
},
{
"actor": 0,
"text": "System assigns the next character id, stores and persists the character; returns it fully."
}
]
},
{
"name": "list/view",
"type": "Alternate",
"notes": "Player lists their characters (Admin: any user\u0027s); the system applies Regenerate Resources to each returned character and returns them. Viewing one character applies regen then returns it.",
"steps": [
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "foreign user/character without admin role -\u003e 403 FORBIDDEN; user/character not found -\u003e 404; invalid name -\u003e 400.",
"steps": [
]
}
]
},
{
"name": "UC-04 Browse Game Catalogue",
"notes": "Races, classes, items (type/quality/slot filters), enemies, adventure zones from static game data.",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario",
"type": "Basic Path",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Player requests the catalogue: races, classes, items (optional type/quality/slot filters), enemies, or adventure zones."
},
{
"actor": 0,
"text": "System returns static game data loaded from skara-brae-common JSON (class info is enriched with is_caster)."
}
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "single item by unknown id -\u003e 404; filters may return an empty list (not an error).",
"steps": [
]
}
]
},
{
"name": "UC-05 Train Stat",
"notes": "Train a stat at a training ground; costs 1 energy + gold. Includes Regenerate Resources.",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario",
"type": "Basic Path",
"notes": "Precondition: character exists and caller may act on it.",
"steps": [
{
"actor": 0,
"text": "Player selects a training ground (strength / dexterity / constitution / intelligence / luck) and submits the stat name."
},
{
"actor": 0,
"text": "System applies Regenerate Resources."
},
{
"actor": 0,
"text": "System checks energy \u003e= 1 and gold \u003e= training cost (cost grows ~1.3x per 10 stat points)."
},
{
"actor": 0,
"text": "System deducts 1 energy and the gold cost, increments the stat; constitution training recomputes max HP (current HP clamped)."
},
{
"actor": 0,
"text": "System persists and returns {success, message, character}."
}
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "foreign character -\u003e 403; character not found -\u003e 404; not enough energy -\u003e 422; not enough gold -\u003e 422; unknown stat name -\u003e 400.",
"steps": [
]
}
]
},
{
"name": "UC-06 Manage Equipment",
"notes": "Equip from inventory / unequip back to inventory.",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario (equip)",
"type": "Basic Path",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Player submits an item id from their inventory."
},
{
"actor": 0,
"text": "System moves the item from inventory to its slot; a previously equipped item in that slot returns to inventory."
},
{
"actor": 0,
"text": "System persists and returns the updated character."
}
]
},
{
"name": "unequip",
"type": "Alternate",
"notes": "Player submits a slot name; the system moves the equipped item back to inventory.",
"steps": [
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "foreign character -\u003e 403; character/item not found -\u003e 404; item not in inventory -\u003e 400; nothing equipped in slot -\u003e 400.",
"steps": [
]
}
]
},
{
"name": "UC-07 Trade at Shop",
"notes": "Buy from (always-stocked + rotating) shop stock or sell inventory items.",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario (buy)",
"type": "Basic Path",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Player views the shop: always-stocked items plus rotating stock (with quantities) alongside their inventory."
},
{
"actor": 0,
"text": "Player submits buy + item id."
},
{
"actor": 0,
"text": "System checks gold \u003e= price (422), and for non-always-in-stock items decrements the limited stock (410 GONE if 0)."
},
{
"actor": 0,
"text": "System deducts gold, adds the item to inventory, persists character and stock; returns {success, message, gold}."
}
]
},
{
"name": "sell",
"type": "Alternate",
"notes": "Player submits sell + item id; system removes the first matching inventory item, pays half the item value, increments shop stock for non-permanent items.",
"steps": [
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "unknown action or item not owned (sell) -\u003e 400; item not found -\u003e 404; insufficient gold -\u003e 422; stock exhausted -\u003e 410.",
"steps": [
]
}
]
},
{
"name": "UC-08 Run Adventure",
"notes": "Zone adventure with weighted enemy pick and turn-based combat. Includes Regenerate Resources, Resolve Combat. Exception: encounter references an unknown enemy -\u003e 500 (post WI-2; previously a panic). WI-2 design driver (sb_core::adventure extraction).",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario",
"type": "Basic Path",
"notes": "Precondition: character exists and caller may act on it.",
"steps": [
{
"actor": 0,
"text": "Player requests an adventure for a zone (default skara_brae_streets)."
},
{
"actor": 0,
"text": "System validates the zone (404) and applies Regenerate Resources."
},
{
"actor": 0,
"text": "System refuses incapacitated characters (HP \u003c= 0 -\u003e 400) and characters with nerve below the zone cost (422); otherwise deducts the nerve cost."
},
{
"actor": 0,
"text": "System draws one enemy from the zone\u0027s weighted encounter table."
},
{
"actor": 0,
"text": "System resolves turn-based combat: open-ended d100 attack rolls, OB vs DB, RoleMaster crit tables with level-gap damage caps, active bard song effects, active spell damage/heal per round."
},
{
"actor": 0,
"text": "On player victory: XP and gold per the enemy definition, character HP set to the last round\u0027s defender HP, and loot dropped per-item chance rolls (only items existing in the catalogue)."
},
{
"actor": 0,
"text": "On defeat: character HP set to 0; no rewards."
},
{
"actor": 0,
"text": "Spell-point upkeep is charged whenever a spell was active, win or lose."
},
{
"actor": 0,
"text": "System persists the character and returns {zone, enemy, combat_log, loot} (loot = item display names)."
}
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "foreign character -\u003e 403; character/zone not found -\u003e 404; incapacitated -\u003e 400; insufficient nerve -\u003e 422.",
"steps": [
]
},
{
"name": "Exception",
"type": "Exception",
"notes": "encounter references an unknown enemy (data error) -\u003e 500 (post WI-2; previously a panic).",
"steps": [
]
}
]
},
{
"name": "UC-09 Heal at Temple",
"notes": "Full or partial healing, cost = amount healed, minimum 1 gold.",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario",
"type": "Basic Path",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Player requests healing, optionally partial."
},
{
"actor": 0,
"text": "System computes missing HP; full heals all, partial heals half (rounded up); cost = amount healed, minimum 1 gold."
},
{
"actor": 0,
"text": "System checks gold (422), deducts it, restores HP, persists; returns {hp, max_hp, gold, healed: true}."
}
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "foreign character -\u003e 403; not found -\u003e 404; already at full HP -\u003e 400; insufficient gold -\u003e 422.",
"steps": [
]
}
]
},
{
"name": "UC-10 Practice Bard Song",
"notes": "Set or clear the active bard song (Bard only, level-gated).",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario",
"type": "Basic Path",
"notes": "Precondition: character class is Bard.",
"steps": [
{
"actor": 0,
"text": "Player views available songs (level-gated, with combat effect descriptions) and the active song."
},
{
"actor": 0,
"text": "Player submits a song id; system validates level requirement (422) and sets it active; returns {success, message, active_song}."
}
]
},
{
"name": "clear",
"type": "Alternate",
"notes": "submitting no song id clears the active song.",
"steps": [
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "non-Bard -\u003e 403; unknown song -\u003e 404; level too low -\u003e 422; foreign character -\u003e 403; not found -\u003e 404.",
"steps": [
]
}
]
},
{
"name": "UC-11 Study Magic",
"notes": "View spellbook, learn spell levels (1-7, gold cost), activate/clear the active spell. Caster classes only; spell level = (character level / 3) + 1, uncapped by code.",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario (view spellbook)",
"type": "Basic Path",
"notes": "Precondition: character belongs to a caster class (Mage-\u003emagician, Wizard, Conjurer, Sorcerer). Spell level = (character level / 3) + 1 - uncapped by code (level 100 -\u003e spell level 34); learn requests are validated to 1-7.",
"steps": [
{
"actor": 0,
"text": "Player requests their spellbook: caster class, current spell level, spell points, spells up to the achievable level (each marked known), and the learn-cost table for levels 2-7."
}
]
},
{
"name": "learn spell level",
"type": "Alternate",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Player submits a spell level (1-7)."
},
{
"actor": 0,
"text": "System validates caster class (403), level range (400), level not above the character\u0027s current spell level (422), gold \u003e= learn cost (422), and that new spells exist (400)."
},
{
"actor": 0,
"text": "System deducts gold, adds all unknown spell ids of that level, recomputes and refills max spell points; returns {learned_count, spell_points, max_spell_points, gold}."
}
]
},
{
"name": "activate/clear active spell",
"type": "Alternate",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Player submits a spell id (or empty to clear)."
},
{
"actor": 0,
"text": "System validates the spell is known (403), exists (404), and spell points suffice (422); deducts the spell\u0027s points and sets it active; returns {active_spell, spell_points}."
}
]
}
]
},
{
"name": "UC-12 Level Up at Review Board",
"notes": "Manual level-up: XP threshold + gold cost (500 per next level), full resource restore on level-up.",
"actors": [
"Player"
],
"scenarios": [
{
"name": "Main Success Scenario",
"type": "Basic Path",
"notes": "",
"steps": [
{
"actor": 0,
"text": "Player requests a level-up."
},
{
"actor": 0,
"text": "System validates: below max level 100, XP \u003e= 18*100*(level)^2 for the next level (i.e. xp_for_level(next)), gold \u003e= 500*next level."
},
{
"actor": 0,
"text": "System deducts the gold cost, increments the level, recomputes and fully restores HP/energy/nerve and max spell points; persists; returns {success, message, character}."
}
]
},
{
"name": "Alternate flows",
"type": "Alternate",
"notes": "already at max level; not enough XP; not enough gold -\u003e all 422. Foreign character -\u003e 403; not found -\u003e 404.",
"steps": [
]
}
]
}
]
}