import { define, Record } from 'type-r';

@define
export class Box extends Record {
    static attributes = {
        x : Number,
        y : Number,
        location : String
    }

    get area() {
        return this.x * this.y;
    }
}

@define
export class Arrow extends Record {
    static attributes = {
        from : Box.from( '~boxes' ),
        to : Box.from( '~boxes' )
    }
}