Added a prototype for Level

javascript/levels.js

@@ -0,0 +1,137 @@
+function Level(name, backgrounds, obstacles){
+	this._backgrounds = backgrounds;
+	this.obstacles = obstacles;
+	this._obstacles = createObstacles(obstaclesLayer);
+	this._name = name;
+	this._score = 0;
+}
+
+Level.prototype = {
+
+	show: function(){
+
+		for (background in this.backgrounds){
+			show_layer(background["layer"]);
+		}
+
+		for(obstacle in this.obstacles){
+			show_layer(obstacle["layer"]);
+		}
+
+	},
+
+	hide: function(){
+
+		for (background in this.backgrounds){
+			hide_layer(background["layer"]);
+		}
+
+		for(obstacle in this.obstacles){
+			hide_layer(obstacle["layer"]);
+		}
+
+	},
+
+	getBackgrounds(): function(){
+		return this._backgrounds;
+	},
+
+	getObstacles: function(){
+		return this._obstacles;
+	},
+
+	getName(): function(){
+		return this._name;
+	},
+
+	getScore(): function{
+		return this_score;
+	},
+
+	start(): function(){
+		//Needs to be Implemented
+	},
+
+	stop(): function(){
+		// Needs to be Implemented
+	},
+
+}
+
+var all_levels,current_level;
+
+// Specifications of any new level must be given here
+
+var all_level_specifications = {
+	"desert":{
+
+		"obstacles":[
+		{
+			"layer": "cactus",
+			"velocity": 10,
+		}
+		],
+
+		"backgrounds":[
+		{
+			"layer" : "DayAndNight",
+			"velocity" : -20
+		},
+		{
+			"layer" : "background",
+			"velocity" : -7
+		},
+		{
+			"layer" : "SunAndMoon",
+			"velocity" : 1
+		},
+		{
+			"layer" : "sky",
+			"velocity" : 0
+		}
+		]
+
+	},
+
+	"gotham":{
+
+		"obstacles":[
+		{
+			"layer":"Gotham_Obstacles",
+			"velocity": -7
+		}
+		],
+
+		"backgrounds":[
+		{
+			"layer":"Gotham",
+			"velocity": -7
+		}
+		],
+	},
+
+};
+
+
+function getAllLevels(){
+	return all_levels;
+}
+
+function newLevel(name,backgroundLayers,obstaclesLayer){
+	return new Level(name,backgroundLayers,obstaclesLayer);
+}
+
+function setCurrentLevel(name){
+	current_level = all_levels[name];
+}
+
+function getCurrentLevel(){
+	return current_level;
+}
+
+window.onload = function() {
+    for (level in all_level_specifications) {
+        specs = all_level_specifications[level];
+        all_levels[level] = newLevel(level, specs["backgrounds"], specs["obstacles"]);
+    }
+}