Lighting experiments

internal/maps/map.go

@@ -3,9 +3,16 @@ package maps
 import (
 	"image/color"
 
-	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/atridad/LilGuy/internal/portal"
 	"github.com/atridad/LilGuy/internal/world"
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+type TimeOfDay string
+
+const (
+	Daytime   TimeOfDay = "day"
+	Nighttime TimeOfDay = "night"
 )
 
 type Map struct {
@@ -17,6 +24,7 @@ type Map struct {
 	World           *world.World
 	Portals         []*portal.Portal
 	BackgroundColor color.NRGBA
+	TimeOfDay       TimeOfDay // Day or Night tag
 
 	bakedImage *ebiten.Image
 }
@@ -31,6 +39,7 @@ func NewMap(id string, number int, displayName string, width, height float64) *M
 		World:           world.NewWorld(),
 		Portals:         make([]*portal.Portal, 0),
 		BackgroundColor: color.NRGBA{R: 135, G: 206, B: 235, A: 255},
+		TimeOfDay:       Daytime, // Default to daytime
 	}
 }