swarm/data/terrains.yaml
Karl Ostmo 936b30d22a
extensible terrain (#1775)
Closes #1641

The `data/terrain.yaml` file is now the authoritative source of terrains, though `BlankT` is still a hard-coded special case.

I have not changed the underlying integer representation of terrain in the world function, which means that the `terrainIndexByName` Map in the `TerrainMap` record is needed for translating between `Int` and `TerrainType`.

# Demo

    scripts/play.sh -i data/scenarios/Testing/1775-custom-terrain.yaml

![Screenshot from 2024-02-22 16-51-53](https://github.com/swarm-game/swarm/assets/261693/1d263c8b-4e9c-40bf-bdc8-bf5ba8e33c4d)

# Changes

* There used to be a function called `integrateScenarioEntities` that combined the `EntityMap` stored in the `Scenario` record with the global entity map.  However, the global entity map is accessible at parse time of the `Scenario`, so we do the combining there and only ever store the combined map in the `Scenario` record.
* JSON Schema for terrain
* Removed the distinction between "World" attributes and "Terrain" attributes
* Unit tests for scenario-defined terrain and related validations
    * Validate existence of referenced terrain at scenario parse time
    * Validate attributes referenced by terrains at parse time
2024-02-29 06:22:21 +00:00

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YAML

- name: stone
attr: stone
description: |
Solid, impenetrable material
- name: dirt
attr: dirt
description: |
Soil amenable to plant growth
- name: grass
attr: grass
description: |
Soft, verdant ground
- name: ice
attr: ice
description: |
Cold, solid, and slippery.