remove demo game

asset.def.go

@@ -0,0 +1,18 @@
+package pncdsl
+
+type AssetKind int
+
+const (
+	AssetImage AssetKind = iota
+	AssetAudio
+	AssetFont
+)
+
+type Asset struct {
+	Name string
+	Path string
+	Kind AssetKind
+}
+
+func (a Asset) GetName() string   { return a.Name }
+func (a Asset) TypeLabel() string { return "asset" }