refactor: Into ECS

1 files changed, 34 insertions, 0 deletions

diff --git a/selection.go b/selection.go
new file mode 100644
index 0000000..9b6dbb2
--- /dev/null
+++ b/selection.go
@@ -0,0 +1,34 @@
+package main
+
+import (
+	"github.com/hajimehoshi/ebiten/v2"
+	"golang.org/x/exp/slog"
+)
+
+type Selection struct {
+	IsSelected    bool
+	SelectedImage *ebiten.Image
+}
+
+func (e *Entity) SelectMultiple(cursor Point, selection GlobalSelection) {
+	if e.Selection.IsEnabled {
+		e.Selection.Value.IsSelected = false
+		selectionBounds := Rectangle{selection.Start, cursor}.Canon()
+		if selectionBounds.Overlaps(e.Bounds()) {
+			e.Selection.Value.IsSelected = true
+			slog.Info("entity selected", slog.String("position", e.Position.Value.String()))
+		}
+	}
+}
+
+func (e *Entity) SelectSingle(cursor Point, canBeSelected bool) bool {
+	if e.Selection.IsEnabled {
+		e.Selection.Value.IsSelected = false
+		if canBeSelected && cursor.In(e.Bounds()) {
+			e.Selection.Value.IsSelected = true
+			slog.Info("entity selected", slog.String("position", e.Position.Value.String()))
+			return true
+		}
+	}
+	return false
+}