export function behaviorTypes() {
  return {
    vector: {
      defaultLiteral: [0, 0],
      children: {
        x: {
          type: 'number',
          label: 'X',
        },
        y: {
          type: 'number',
          label: 'Y',
        },
      },
    },
    Vector: (Math) => ({
      children: {
        floor: {
          type: 'vector',
          label: 'Floor $1.',
          args: [
            ['vector', {
              type: 'vector',
            }],
          ],
        },
        fromDirection: {
          type: 'vector',
          label: '$1 as a movement vector.',
          args: [
            ['direction', {
              type: 'number',
            }],
          ],
        },
        sub: {
          type: 'vector',
          label: 'Subtract $2 from $1.',
          args: [
            ['l', {
              type: 'vector',
            }],
            ['r', {
              type: 'vector',
            }],
          ],
        },
      },
    }),
  };
}