Tweaks

engine/game.go

@@ -66,7 +66,6 @@ func (g *Game) Layout(outsideWidth, outsideHeight int) (w, h int) {
 
 // Update updates everything.
 func (g *Game) Update() error {
-	//return g.updateRecursive(g)
 	return g.Query(g.Root, UpdaterType,
 		func(c interface{}) error {
 			if d, ok := c.(Disabler); ok && d.Disabled() {
@@ -109,11 +108,10 @@ func (g *Game) Children(c interface{}) ComponentSet {
 }
 
 // PathRegister calls Register on every Registrar in the path between g and
-// parent (top-to-bottom, i.e. g first)
+// parent (top-to-bottom, i.e. game first, component last).
 func (g *Game) PathRegister(component, parent interface{}) error {
-	rp := g.ReversePath(parent)
+	for _, p := range g.Path(parent) {
-	for i := len(rp) - 1; i >= 0; i-- {
+		if r, ok := p.(Registrar); ok {
-		if r, ok := rp[i].(Registrar); ok {
 			if err := r.Register(component, parent); err != nil {
 				return err
 			}
@@ -123,7 +121,7 @@ func (g *Game) PathRegister(component, parent interface{}) error {
 }
 
 // PathUnregister calls Unregister on every Registrar in the path between g and
-// parent (bottom-to-top, i.e. parent first).
+// parent (bottom-to-top, i.e. component first, game last).
 func (g *Game) PathUnregister(component interface{}) {
 	for _, p := range g.ReversePath(component) {
 		if r, ok := p.(Registrar); ok {
@@ -147,7 +145,7 @@ func (g *Game) Path(component interface{}) []interface{} {
 func (g *Game) ReversePath(component interface{}) []interface{} {
 	var stack []interface{}
 	g.dbmu.RLock()
-	for p := component; p != nil; p = g.Parent(p) {
+	for p := component; p != nil; p = g.parent[p] {
 		stack = append(stack, p)
 	}
 	g.dbmu.RUnlock()
@@ -230,6 +228,9 @@ func (g *Game) Prepare(component interface{}) error {
 // builds the component databases and then calls Prepare on every Preparer.
 // LoadAndPrepare must be called before any calls to Component or Query.
 func (g *Game) LoadAndPrepare(assets fs.FS) error {
+	if g.Projection == nil {
+		g.Projection = geom.ElevationProjection{}
+	}
 	if g.VoxelScale == (geom.Float3{}) {
 		g.VoxelScale = geom.Float3{X: 1, Y: 1, Z: 1}
 	}

game/level1.go

@@ -21,7 +21,10 @@ func Level1() *engine.Scene {
 					Src: engine.ImageRef{Path: "assets/space.png"},
 				},
 				Factor: 0.5,
-			},
+			}, // Parallax
+			&engine.DrawDAG{
+				ChunkSize: 16,
+				Child: engine.MakeContainer(
 					&engine.PrismMap{
 						ID: "hexagons",
 						PosToWorld: geom.IntMatrix3x4{
@@ -247,8 +250,8 @@ func Level1() *engine.Scene {
 							geom.Pt3(2, 0, 12): {},
 
 							geom.Pt3(0, 0, 13): {},
-				},
+						}, // Map
-			},
+					}, // PrismMap
 					&Awakeman{
 						CameraID: "game_camera",
 						ToastID:  "toast",
@@ -307,9 +310,11 @@ func Level1() *engine.Scene {
 								},
 								CellSize: image.Pt(10, 16),
 								Src:      engine.ImageRef{Path: "assets/aw.png"},
-					},
+							}, // Sheet
-				},
+						}, // Sprite
-			},
+					}, // Awakeman
-		),
+				), // Container
-	}
+			}, // DrawDAG
+		), // Container
+	} // Scene
 }

main.go

@@ -70,13 +70,10 @@ func main() {
 					ID:    "bg_fill",
 					Color: color.Gray{100},
 				},
-				&engine.DrawDAG{
+				&engine.Camera{
-					ChunkSize: 16,
-					Child: &engine.Camera{
 					ID:    "game_camera",
 					Child: lev1,
 				},
-				},
 				&engine.DebugToast{ID: "toast", Pos: image.Pt(0, 15)},
 				engine.PerfDisplay{},
 			),