Module metrics 

Cost metrics for A* pathfinding.

Mirrors Julia Agents.jl Pathfinding.CostMetric system. Cost metrics estimate the travel cost between two grid cells for use as the A* heuristic and/or edge cost.

Built-in metrics

Metric	Description
DirectDistance	Shortest diagonal/orthogonal path cost (default)
MaxDistance	Maximum absolute coordinate difference (Chebyshev)
Manhattan	Sum of absolute coordinate differences (L1)
PenaltyMap	Base metric + per-cell penalty difference (height maps)

Structs

DirectDistance

Direct-distance metric – the default.

Manhattan

Manhattan distance metric (L1 / taxicab distance).

MaxDistance

Maximum-coordinate-difference metric (Chebyshev distance).

PenaltyMap

Penalty-map metric – base distance plus per-cell penalty difference.

Enums

PenaltyMapError

Errors returned by penalty-map validation.

Traits

CostMetric

Trait for cost metrics used in A* pathfinding on 2D grids.