Can we enrich the type of e.g. dtObstacleRef as { ptr: number} to provide keys?

[rob-myers]

Hi again,

You provide type ObstacleRef which resolves as class dtObstacleRef {}.
However, values possess a numeric property ptr.

Can we use this number to identity obstacles e.g. when rendering a list of them?

[isaac-mason]

Hi, you may be able to, but I'd need to check the source code to see if refs get reused on removing then adding obstacles.

As an alternative - in the js wrapper, or in user land, we can create a unqiue id based on object identity.

const objectToId = new WeakMap<any, number>()

let nextId = 0

export const id = (object: any) => {
  const id = objectToId.get(object)
  if (id !== undefined) return id

  objectToId.set(object, nextId)
  return nextId++
}