Random Fantasy Fortress Room Hierarchy Generator

Description

Construct a rooted fictional room tree with caller role transitions, cross-zone gateway roles and child/depth caps while preserving access tags; bounded nonuniform search, no security certification.

Worldbuilding fixtures describe an invented setting through supplied entities and explicit relations. A reproducible arrangement can support games or writing exercises while keeping constructed history and geography separate from factual claims about the real world.

Construct a rooted fictional room tree with caller role transitions, cross-zone gateway roles and child/depth caps while preserving access tags; bounded nonuniform search, no security certification.

When to use this tool

Use this generator to create reproducible fantasy fortress room hierarchy cases from the supplied model or bank. Inspect the returned evidence before using cases in a test or exercise.

How to use the tool and how it works

Supply rooms, root, allowedRolePairs, gatewayRoleIds, maximumChildren, maximumDepth in the field shapes below. Set seed when you need an explicit replay.
Run the tool and correct any input error. For generated controls, distinguish a successful fixture containing an invalid case from failure to generate the fixture.
Read rooms, parentLinks, zoneCounts, componentCount, fictional. Use the conventions below. Keep answer-bearing fields separate when presenting an exercise.

Grow a rooted room hierarchy with bounded depth and child counts using allowed directed role pairs. A parent crossing zone boundaries must have a gateway role; bounded backtracking assigns every room and returns levels and parent links.^[1]

Input field	Meaning and units	Accepted input
rooms	Rooms	Required. Array of Object; no unknown keys.; minimum items 1; maximum items 12.
rooms[].id	Literal identifier used independently of display labels.	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
rooms[].roleId	Role Id	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
rooms[].zoneId	Zone Id	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
rooms[].accessTags	Access Tags	Required. Array of Text; minimum UTF-16 length 1; maximum UTF-16 length 64.; minimum items 0; maximum items 16.
root	Root	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
allowedRolePairs	Allowed Role Pairs	Required. Array of Object; no unknown keys.; minimum items 0; maximum items 64.
allowedRolePairs[].from	From	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
allowedRolePairs[].to	To	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
gatewayRoleIds	Gateway Role Ids	Required. Array of Text; minimum UTF-16 length 1; maximum UTF-16 length 64.; minimum items 0; maximum items 12.
maximumChildren	Maximum Children	Required. Safe integer; minimum 0; maximum 11.
maximumDepth	Maximum Depth	Required. Safe integer; minimum 0; maximum 11.
seed	Optional numeric seed; takes precedence over context randomness. Without either, use the fixed tool.io default seed.	Optional. Safe integer.

Output field	Interpretation	Returned shape
rooms	Rooms	Required. Array of Object; no unknown keys.; minimum items 1; maximum items 12.
rooms[].id	Literal identifier used independently of display labels.	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
rooms[].roleId	Role Id	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
rooms[].zoneId	Zone Id	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
rooms[].accessTags	Access Tags	Required. Array of Text; minimum UTF-16 length 1; maximum UTF-16 length 64.; minimum items 0; maximum items 16.
rooms[].level	Level	Required. Safe integer; minimum 0; maximum 11.
parentLinks	Parent Links	Required. Array of Object; no unknown keys.; minimum items 0; maximum items 11.
parentLinks[].from	From	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
parentLinks[].to	To	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
zoneCounts	Zone Counts	Required. Array of Object; no unknown keys.; minimum items 1; maximum items 12.
zoneCounts[].id	Literal identifier used independently of display labels.	Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
zoneCounts[].count	Count	Required. Safe integer; minimum 1; maximum 12.
componentCount	Component Count	Required. Safe integer; minimum 1; maximum 1.
fictional	Fictional	Required. Boolean; exactly true.
randomness	Replay source and normalized 32-bit seed, or null seed for an advancing context source.	Required. Object; no unknown keys.
randomness.seed	Optional safe-integer replay seed; normalization and precedence are explained below.	Required. Safe integer. or Null.
randomness.source	Source	Required. Text; one of "context", "seed".

An explicit safe-integer seed takes precedence over injected context randomness and is normalized to an unsigned 32-bit integer. With no seed and no context source, replay uses the fixed tool.io default seed. A context source must return finite values from zero inclusive to one exclusive; its advancing state must be retained separately. randomness records the source and normalized seed, or null for context. These generators are not cryptographic random sources.

json

{
  "input": {
    "rooms": [
      {
        "id": "r",
        "roleId": "hall",
        "zoneId": "keep",
        "accessTags": [
          "public"
        ]
      },
      {
        "id": "a",
        "roleId": "armory",
        "zoneId": "keep",
        "accessTags": [
          "staff"
        ]
      },
      {
        "id": "b",
        "roleId": "tower",
        "zoneId": "wall",
        "accessTags": [
          "guard"
        ]
      }
    ],
    "root": "r",
    "allowedRolePairs": [
      {
        "from": "hall",
        "to": "armory"
      },
      {
        "from": "hall",
        "to": "tower"
      }
    ],
    "gatewayRoleIds": [
      "hall"
    ],
    "maximumChildren": 2,
    "maximumDepth": 1,
    "seed": 42
  },
  "output": {
    "rooms": [
      {
        "id": "r",
        "roleId": "hall",
        "zoneId": "keep",
        "accessTags": [
          "public"
        ],
        "level": 0
      },
      {
        "id": "a",
        "roleId": "armory",
        "zoneId": "keep",
        "accessTags": [
          "staff"
        ],
        "level": 1
      },
      {
        "id": "b",
        "roleId": "tower",
        "zoneId": "wall",
        "accessTags": [
          "guard"
        ],
        "level": 1
      }
    ],
    "parentLinks": [
      {
        "from": "r",
        "to": "a"
      },
      {
        "from": "r",
        "to": "b"
      }
    ],
    "zoneCounts": [
      {
        "id": "keep",
        "count": 2
      },
      {
        "id": "wall",
        "count": 1
      }
    ],
    "componentCount": 1,
    "fictional": true,
    "randomness": {
      "seed": 42,
      "source": "seed"
    }
  }
}

Limitations and assumptions

Access tags are preserved metadata rather than access-control validation. The fictional hierarchy does not check floor plans, evacuation, building regulations, structural fit, or real fortress security.
A replay requires the same complete input and implementation. The stated sampling convention applies within its eligible space. A finite draw does not exhaust all possible outputs; repeats remain possible unless a distinct-selection rule is explicit.
The field tables state structural bounds; cross-field constraints and bounded search or output budgets also apply. Unknown keys are rejected where the object contract disallows them. Input errors are distinct from null fields and deliberate invalid controls in a successful output.

Alternative or Complementary methods

For a supplied example, inspect the returned construction or delegated check directly. To evaluate a consumer, also test cases chosen for its own boundaries; a generated finite corpus does not establish exhaustive coverage.

References

Tool behavior and example: Random Fantasy Fortress Room Hierarchy Generator — tool.io

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