added config file support

control.go

@@ -20,7 +20,8 @@ func startGame(w http.ResponseWriter, req *http.Request) {
 	log.Println("asked to create a game")
 
 	requested_game_name := idg.Hash()
-	width, height := float32(*width), float32(*height)
+	width, height := float32(conf.Width), float32(conf.Height)
+	tick := conf.Tick
 
 	// here we determine if we are going to run with defaults or pick them off
 	// a posted json blob
@@ -30,12 +31,13 @@ func startGame(w http.ResponseWriter, req *http.Request) {
 			log.Printf("unable to read request body:", err)
 		}
 		req.Body.Close()
-		conf := struct {
-			With   float32 `json:"width"`
+		cfg := struct {
+			Width  float32 `json:"width"`
 			Height float32 `json:"height"`
 			Name   string  `json:"name"`
+			Tick   int     `json:"tick"`
 		}{}
-		err = json.Unmarshal(body, &conf)
+		err = json.Unmarshal(body, &cfg)
 		if err != nil {
 			NewFailure(err.Error())
 			if err := json.NewEncoder(w).Encode(NewFailure(err.Error())); err != nil {
@@ -43,15 +45,16 @@ func startGame(w http.ResponseWriter, req *http.Request) {
 			}
 			return
 		}
-		requested_game_name = conf.Name
-		width = conf.With
-		height = conf.Height
+		requested_game_name = cfg.Name
+		width = cfg.Width
+		height = cfg.Height
+		tick = cfg.Tick
 	}
 
 	g := games.get(requested_game_name)
 	if g == nil {
 		log.Printf("Game '%s' non-existant; making it now", requested_game_name)
-		g = NewGame(requested_game_name, width, height)
+		g = NewGame(requested_game_name, width, height, tick)
 		go g.run()
 		games.add(g)
 	} else {