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Random Fictional Roadside Stop Chain Generator

Populate an imaginary connected stop chain with supplied type and hook labels, bounded integer travel legs, and optional adjacent-type exclusion; distances are fictional.

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Description

Populate an imaginary connected stop chain with supplied type and hook labels, bounded integer travel legs, and optional adjacent-type exclusion; distances are fictional.

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.

Populate an imaginary connected stop chain with supplied type and hook labels, bounded integer travel legs, and optional adjacent-type exclusion; distances are fictional.

When to use this tool

Use this generator to create reproducible fictional roadside stop chain 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

  1. Supply stopTypes, count, minimumLegKm, maximumLegKm, forbidConsecutiveType in the field shapes below. Set seed when you need an explicit replay.
  2. 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.
  3. Read stops, links, totalKm, componentCount, fictional. Use the conventions below. Keep answer-bearing fields separate when presenting an exercise.

Draw stop types and hooks, optionally excluding the preceding type. Add inclusive integer leg distances between consecutive stops and return cumulative kilometer positions, chain links, and component count.1

Input fieldMeaning and unitsAccepted input
stopTypesStop TypesRequired. Array of Object; no unknown keys.; minimum items 1; maximum items 16.
stopTypes[].idLiteral identifier used independently of display labels.Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
stopTypes[].hooksHooksRequired. Array of Text; maximum UTF-16 length 1024.; minimum items 1; maximum items 16.
countCountRequired. Safe integer; minimum 1; maximum 32.
minimumLegKmMinimum Leg KmRequired. Safe integer; minimum 0; maximum 1000000.
maximumLegKmMaximum Leg KmRequired. Safe integer; minimum 0; maximum 1000000.
forbidConsecutiveTypeForbid Consecutive TypeRequired. Boolean.
seedOptional numeric seed; takes precedence over context randomness. Without either, use the fixed tool.io default seed.Optional. Safe integer.
Output fieldInterpretationReturned shape
stopsStopsRequired. Array of Object; no unknown keys.; minimum items 1; maximum items 32.
stops[].idLiteral identifier used independently of display labels.Required. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
stops[].typeIdType IdRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
stops[].hookHookRequired. Text; maximum UTF-16 length 1024.
stops[].positionKmPosition KmRequired. Safe integer; minimum 0; maximum 9007199254740991.
linksLinksRequired. Array of Object; no unknown keys.; minimum items 0; maximum items 31.
links[].fromFromRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
links[].toToRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 64.
totalKmTotal KmRequired. Safe integer; minimum 0; maximum 9007199254740991.
componentCountComponent CountRequired. Safe integer; minimum 1; maximum 1.
fictionalFictionalRequired. Boolean; exactly true.
randomnessReplay source and normalized 32-bit seed, or null seed for an advancing context source.Required. Object; no unknown keys.
randomness.seedOptional safe-integer replay seed; normalization and precedence are explained below.Required. Safe integer. or Null.
randomness.sourceSourceRequired. 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": {
    "stopTypes": [
      {
        "id": "inn",
        "hooks": [
          "rest"
        ]
      },
      {
        "id": "ferry",
        "hooks": [
          "cross"
        ]
      }
    ],
    "count": 3,
    "minimumLegKm": 2,
    "maximumLegKm": 4,
    "forbidConsecutiveType": true,
    "seed": 42
  },
  "output": {
    "stops": [
      {
        "id": "stop-1",
        "typeId": "ferry",
        "hook": "cross",
        "positionKm": 0
      },
      {
        "id": "stop-2",
        "typeId": "inn",
        "hook": "rest",
        "positionKm": 2
      },
      {
        "id": "stop-3",
        "typeId": "ferry",
        "hook": "cross",
        "positionKm": 5
      }
    ],
    "links": [
      {
        "from": "stop-1",
        "to": "stop-2"
      },
      {
        "from": "stop-2",
        "to": "stop-3"
      }
    ],
    "totalKm": 5,
    "componentCount": 1,
    "fictional": true,
    "randomness": {
      "seed": 42,
      "source": "seed"
    }
  }
}

Limitations and assumptions

  • A no-consecutive-repeat request with multiple stops needs two stop types. The chain is fictional linear distance rather than geographic road routing, travel time, or guidance about real stops.
  • 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

  1. Tool behavior and example: Random Fictional Roadside Stop Chain Generator — tool.io

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