GridCell class

Represents a discrete cell in a 2D spatial partitioning grid

This class is used for spatial hashing and efficient neighbor lookups in particle systems. Each GridCell corresponds to a fixed-size region in the continuous coordinate space.

Key Features:

• Immutable coordinates (safe for hash-based collections)
• Proper equality and hash code implementation
• Human-readable string representation

Mathematical Basis: Continuous space → Discrete grid mapping: cellX = floor(worldX / cellSize) cellY = floor(worldY / cellSize)

Constructors

GridCell(int x, int y)

Creates a grid cell with discrete coordinates

Properties

hashCode → int

Hash code implementation following Dart's hash code contract:

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

x → int

The x-coordinate of the grid cell (discrete grid space, not world space)

final

y → int

The y-coordinate of the grid cell (discrete grid space, not world space)

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

Human-readable string representation for debugging

override

Operators

operator ==(Object other) → bool

Equality operator that compares both coordinates

override