Struct Camera 

pub struct Camera {
    pub origin: Pos,
}

The map tile shown in the viewport’s top-left corner. It can be negative (or run past the map) when the map is smaller than the viewport: the map is then centred and the cells around it are left blank.

Fields

origin: Pos

Top-left tile of the viewport.

Implementations

impl Camera

pub const MARGIN: i32 = 3

Default follow margin, in tiles.

pub fn centred_on(target: Pos, map_w: u16, map_h: u16, view: (i32, i32)) -> Self

A camera with target as near the centre of a viewport of view tiles (across, down) as the map allows, on a map_w × map_h map.

pub fn follow( &mut self, target: Pos, map_w: u16, map_h: u16, view: (i32, i32), margin: i32, )

Scrolls as little as possible so target is at least margin tiles from each edge of a viewport of view tiles (across, down), without showing past the map’s edges. On an axis where the map is smaller than the viewport, the map is centred. A margin over half the viewport is treated as half.

Trait Implementations

impl Clone for Camera

fn clone(&self) -> Camera

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Camera

impl Debug for Camera

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Camera

fn default() -> Camera

Returns the “default value” for a type.

impl Eq for Camera

impl PartialEq for Camera

fn eq(&self, other: &Camera) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Camera