Basic minimalistic frame pushing

data/level.go

@@ -13,4 +13,6 @@ func (lvl *Level) AddLayer(z int, l *Layer) {
 	lvl.Layers[z] = l
 }
 
-func LoadLevel(filename string) Level
+func LoadLevel(filename string) *Level {
+	return nil
+}

data/screen.go

@@ -18,7 +18,7 @@ var (
 func RenderFrame(f *Frame) {
 	winMutex.Lock()
 	if win != nil {
-		win.Clear()
+		//win.Clear()
 		for k, _ := range f.Data {
 			win.MovePrint(k, 0, string(f.Data[k]))
 		}

default.lvl

@@ -1,5 +1,5 @@
 {
-
+    "FPS": 10,
 	"Layers": [
 	  { "Z": 0, // Z-Level: 0 = frontmost
 
@@ -10,8 +10,24 @@
 				//              v    5 = no motion
 		"V": 1  // Characters / frame ()
 		        // TODO: H/V Ratio
-	    "data": "... base enc block" },
+		"frames": [
+	      "data": "... base enc block"
+		]
+		}
 	  { "Z": 1,
 	    "data": "..."}
 	]
 }
+
+
+LevelDir
+ +-- Manifest        :)
+ +-- Layer 1
+ |    +-- Manifest   << layer dimension, orientation and speed, transparency char
+ |    +-- 1.frame    << text, unix style lf
+ |    +-- 2.frame
+ |    | …
+ |    +-- <n>.frame
+ +-- Layer 2
+ | …
+ +-- Layer <n>