fix: ...

cmd/test/camera.go

@@ -41,6 +41,18 @@ func (cam *Camera) OnUpdate(c gg.Context) {
 		cam.Move(mov.AbsDelta)
 	}
 
+	for _, btn := range c.Events().Mouse.ButtonDowns {
+		switch btn.MouseButton {
+		case gg.MouseButtonLeft :
+			t := NewTri(ox.T().SetPosition(
+				c.Engine().GetAbsCursorPosition(),
+			))
+			t.Spawned = true
+			c.Engine().Spawn(t)
+		}
+	}
+
+
 	// Scale.
 	if wheel != nil {
 		k := 1.5

cmd/test/grid.go

@@ -5,7 +5,6 @@ import "surdeus.su/core/gg/ox"
 import "surdeus.su/core/gg/mx"
 
 type Grid struct {
-	ox.ObjectImpl
 	ox.Sprite
 	Cage, Width mx.Float
 }
@@ -26,7 +25,7 @@ func (grid *Grid) OnUpdate(c Context) {
 
 func NewGrid() *Grid {
 	grid := &Grid{}
-	grid.Transform = ox.T()
+	grid.Transform = *ox.T()
 	grid.SetAround(mx.V2(0))
 	grid.Layer = LayerBackground
 	grid.Images[0] = gg.NewImage(720, 480)

cmd/test/main.go

@@ -80,7 +80,6 @@ func main() {
 	})
 	camera = NewCamera()
 	e.SetCamera(camera)
-	e.Spawn(camera)
 
 	var err error
 	playerImg, err = gg.LoadImage(bytes.NewReader(images.Runner_png))
@@ -101,12 +100,8 @@ func main() {
 		panic(err)
 	}
 	player = NewPlayer()
-	tri = NewTri()
+	tri = NewTri(ox.T())
 
-	e.Spawn(&Debug{})
-	e.Spawn(player)
-	e.Spawn(rect)
-	e.Spawn(tri)
 
 	/*circle := &gg.Circle{}
 	circle.Transform = gg.T()
@@ -117,8 +112,6 @@ func main() {
 	circle.Visible = true*/
 	//e.Spawn(circle)
 
-	e.Spawn(NewGrid())
-
 	text, err := NewText()
 	if err != nil {
 		panic(err)
@@ -127,6 +120,15 @@ func main() {
 
 	//fmt.Println(rect.GetLayer(), player.GetLayer())
 	fmt.Println("Starting...")
+	objects := []gg.Object{
+		camera, &Debug{},
+
+		player, rect, tri,
+		NewGrid(), text,
+	}
+	for _, object := range objects {
+		e.Spawn(object)
+	}
 	err = e.Run()
 	if err != nil {
 		panic(err)

cmd/test/text.go

@@ -15,7 +15,7 @@ type Text struct {
 
 func NewText() (*Text, error) {
 	txt := &Text{}
-	txt.Transform = ox.T()
+	txt.Transform = *ox.T()
 	//txt.Position = gg.V2(400)
 	txt.Color = gg.RGBA(1, 1, 1, 1)
 	txt.Layer = LayerHighest

cmd/test/trianlge.go

@@ -4,7 +4,7 @@ import "surdeus.su/core/gg"
 import "surdeus.su/core/gg/ox"
 import "surdeus.su/core/gg/mx"
 //import "fmt"
-//import "log"
+import "log"
 
 var (
 	counter int
@@ -15,10 +15,9 @@ type Tri struct {
 	Spawned bool
 }
 
-func NewTri() *Tri {
+func NewTri(t *ox.Transform) *Tri {
 	ret := &Tri{}
-	ret.Transform = ox.T()
-	ret.SetPosition(mx.V2(-100))
+	ret.Transform = *t
 	ret.Triangles = mx.Triangles{
 		mx.Triangle{
 			mx.V(0, 10),
@@ -28,38 +27,18 @@ func NewTri() *Tri {
 	}
 	ret.Color = gg.RGBA(1, 1, 0, 1)
 	ret.Visible = true
-	//ret.Collidable = true
-	//ret.Type = gg.CollisionStaticPhysics
 	ret.Layer = LayerTriangle
-	//ret.Connect(player)
 
 	return ret
 }
 
-func (t *Tri) OnUpdate(c Context) {
-	//log.Println("onup:", t.IsVisible())
-	//redges := rect.Edges()
-	//tedges := t.Edges()
-	//crosses, ok := tedges.CrossWithEdges(redges)
-	//fmt.Println("shit:", crosses, ok)
-
-	if false {
-		//fmt.Println("edges:", tedges)
+func (t *Tri) OnStart(c Context) {
+	log.Println("added a tri")
 }
-	/*col, hasCol := gg.Collide(t, rect)
-	if hasCol && len(col.Crosses) > 0 {
-		fmt.Println("col:", col)
-	}*/
+
+func (t *Tri) OnUpdate(c Context) {
 	e := c.Engine()
 	dt := e.DT().Seconds()
-	/*if !t.ContainedPoints(gg.Points{c.AbsCursorPosition()}).Empty() {
-		t.Color = gg.Rgba(0, 1, 0, 1)
-	} else {
-		t.Color = gg.Rgba(1, 0, 1, 1)
-	}*/
-	if t.Spawned {
-		return
-	}
 
 	keys := e.GetKeyboardKeys()
 
@@ -82,11 +61,6 @@ func (t *Tri) OnUpdate(c Context) {
 			if t.Spawned {
 				break
 			}
-			/*t.Triangles = append(t.Triangles, gg.Triangle{
-				gg.V(0, 10+ mx.Float(counter)),
-				gg.V(100+ mx.Float(counter), 0),
-				gg.V(0, -10-gg.Float(counter)),
-			})*/
 		case gg.Key3:
 			if t.Spawned {
 				break
@@ -111,3 +85,7 @@ func (t *Tri) OnUpdate(c Context) {
 		}
 	}
 }
+
+func (tri *Tri) Draw(c Context) *gg.Drawing {
+	return tri.DrawablePolygon.Draw(c)
+}

engine.go

@@ -139,8 +139,8 @@ func (e *Engine) Spawn(object Object) bool {
 	ctx := Context{
 		engine: e,
 	}
-	ok := e.objects.add(object)
 	object.OnStart(ctx)
+	ok := e.objects.add(object)
 
 	return ok
 }
@@ -151,8 +151,8 @@ func (e *Engine) Delete(object Object) bool {
 	ctx := Context{
 		engine: e,
 	}
-	ok := e.objects.remove(object)
 	object.OnDelete(ctx)
+	ok := e.objects.remove(object)
 
 	return ok
 }
@@ -328,6 +328,9 @@ func (e *engine) Update() error {
 		events: events,
 	}
 	for _, object := range e.objects.store {
+		if object == nil {
+			continue
+		}
 		object.OnUpdate(c)
 	}
 
@@ -358,7 +361,7 @@ func (e *engine) Draw(img *ebiten.Image) {
 	m := map[Layer][]Drawer{}
 	for _, object := range eng.objects.store {
 		// Skipping the ones we do not need to draw.
-		if !object.IsVisible() {
+		if object == nil || !object.IsVisible() {
 			continue
 		}
 		l := object.GetLayer()

ox/camera.go

@@ -25,7 +25,7 @@ type Camera struct {
 // with default settings.
 func NewCamera() Camera {
 	ret := Camera{}
-	ret.Transform = T()
+	ret.Transform = *T()
 	return ret
 }
 

ox/transform.go

@@ -30,14 +30,15 @@ type Transform struct {
 }
 
 // Returns the default Transform structure.
-func T() Transform {
-	ret := Transform{
+func T() *Transform {
+	ret := &Transform{
 		// Rotate around
 		scale: mx.V2(1),
 		// Rotate around the center.
 		around: mx.V2(.5),
 	}
 	ret.dirty = true
+	ret.parentDirty = true
 	return ret
 }