Game.LambdaHack.Common.VectorXY

Basic cartesian geometry operations on 2D vectors.

Documentation

newtype VectorXY

2D vectors in cartesian representation.

Constructors

VectorXY (X, Y)

Instances

Eq VectorXY

Ord VectorXY

Read VectorXY

Show VectorXY

Binary VectorXY

shiftXY :: PointXY -> VectorXY -> PointXY

Shift a point by a vector.

movesXY :: [VectorXY]

Vectors of all unit moves in the chessboard metric, clockwise, starting north-west.

movesCardinalXY :: [VectorXY]

Vectors of all cardinal direction unit moves, clockwise, starting north.

chessDistXY :: VectorXY -> Int

The lenght of a vector in the chessboard metric, where diagonal moves cost 1.

euclidDistSqXY :: VectorXY -> Int

Squared euclidean length of a vector.

negXY :: VectorXY -> VectorXY

Reverse an arbirary vector.