occupancy

package

v0.0.5 Latest Latest Go to latest Published: Sep 11, 2026 License: MIT Imports: 2 Imported by: 0

Details

Package occupancy maps grid cells to owning entities (placed buildings, etc.).

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type Map struct {
	Width  int
	Height int
	// contains filtered or unexported fields
}

Map tracks which entity occupies each cell. Empty cells hold ecs.Nil.

func New(width, height int) *Map

New creates a Width×Height occupancy map (all empty).

func (m *Map) At(x, y int) (ecs.Entity, bool)

At returns the entity at (x,y), if any.

func (m *Map) Clear(x, y int)

Clear empties a single cell.

func (m *Map) ClearRect(fp grid.Rect, e ecs.Entity)

ClearRect empties every cell in fp that currently holds e (or any if e is Nil).

func (m *Map) Set(x, y int, e ecs.Entity)

Set assigns e to a single cell.

func (m *Map) SetRect(fp grid.Rect, e ecs.Entity)

SetRect assigns e to every cell in fp.