diff --git a/cmd/test/player.go b/cmd/test/player.go
index 5b1e5e4..38fb26b 100644
--- a/cmd/test/player.go
+++ b/cmd/test/player.go
@@ -135,6 +135,3 @@ func (p *Player) Update(c *Context) {
 	}}
 }
 
-func (p *Player) Event(c *gg.Context) {
-
-}
diff --git a/cmd/test/trianlge.go b/cmd/test/trianlge.go
index f1a33f8..8dcf030 100644
--- a/cmd/test/trianlge.go
+++ b/cmd/test/trianlge.go
@@ -75,11 +75,13 @@ func (t *Tri) Update(c *Context) {
 		if t.Spawned {
 			break
 		}
-		counter++
 		tt := *t
 		tt.Spawned = true
+		tt.Visible = false
 		tt.Disconnect()
-		c.Spawn(&tt)
+		if c.Spawn(&tt) == nil {
+			counter++
+		}
 	}}
 
 	for _, event := range c.Events {
diff --git a/engine.go b/engine.go
index 187b186..e61a74a 100644
--- a/engine.go
+++ b/engine.go
@@ -10,6 +10,10 @@ import (
 	"sync"
 )
 
+const (
+	LayerBufSize = 0
+)
+
 type GraphicsLibrary = ebiten.GraphicsLibrary
 type RunOptions = ebiten.RunGameOptions
 
@@ -69,6 +73,8 @@ type Engine struct {
 	cursorPos Vector
 	outerEvents, handleEvents EventChan
 	wg sync.WaitGroup
+
+	bufs [LayerBufSize]*Image
 }
 
 type engine Engine