Add support for fixed object geometry

also updated config file

control.go

@@ -64,6 +64,7 @@ func (c *Controller) StartGame(w http.ResponseWriter, req *http.Request) {
 	requested_game_name := c.Idg.Hash()
 	width, height := float64(c.Conf.Width), float64(c.Conf.Height)
 	obstacleCount := 0
+	obstacles := []Obstacle{}
 	maxPoints := c.Conf.MaxPoints
 	mode := "deathmatch"
 
@@ -90,6 +91,7 @@ func (c *Controller) StartGame(w http.ResponseWriter, req *http.Request) {
 		width = float64(cfg.Width)
 		height = float64(cfg.Height)
 		obstacleCount = cfg.ObstacleCount
+		obstacles = cfg.Obstacles
 		maxPoints = cfg.MaxPoints
 		mode = cfg.Mode
 	}
@@ -98,7 +100,27 @@ func (c *Controller) StartGame(w http.ResponseWriter, req *http.Request) {
 	if g == nil {
 		log.Printf("Game '%s' non-existant; making it now", requested_game_name)
 		var err error
-		g, err = NewGame(requested_game_name, width, height, obstacleCount, c.Conf.Tick, maxPoints, mode)
+		g, err = NewGame(
+			requested_game_name,
+			width,
+			height,
+			c.Conf.Tick,
+			maxPoints,
+			mode,
+		)
+		g.obstacleCount = obstacleCount
+		g.obstacles = obstacles
+		g.defaultObstacles = obstacles
+		if len(g.defaultObstacles) == 0 {
+			g.obstacles = GenerateObstacles(
+				g.obstacleCount,
+				g.width,
+				g.height,
+			)
+		} else {
+			g.obstacles = c.Conf.Obstacles
+		}
+
 		if err != nil {
 			log.Printf("problem creating game: %s: %s", requested_game_name, err)
 			b, _ := json.Marshal(NewFailure("game creation failure"))