Added weapon drops and collection. New laser item asset.

screenmanager/manager.go

@@ -26,7 +26,7 @@ func NewManager() Manager {
 	return Manager{
 		Info: gamedata.GameInfo{
 			Name:    "survive",
-			Version: "0.30",
+			Version: "0.32",
 			Dimensions: gamedata.Area{
 				Width:  defaultWidth,
 				Height: defaultHeight,