Dimensions object

[benjaminpjones]

I often find myself looking at Grid to check whether a position is in bounds. (Grid.isInBounds)

However, if the appropriate Grid is not available, this feels wasteful, since isInBounds is a function of width and height, but not the grid itself (which contains a 2d array). It would be nice to create a Dimensions class that owns height and width and can do any calculations based on these.

Before

const grid = new Grid(3, 4);
grid.isInBounds({ x: 1, y: 2}); // true

After

// when a grid exists
grid.dims.isInBounds({ x: 1, y: 2});

// or when an appropriate grid does not exist
const dims = new Dimensions(3, 4); // no array created :D
dims.isInBounds({ x: 1, y: 2});