1    "use strict"; 
2    function showItemInRoom() 
3    { 
4      if (player.currentRoom.itemFound) 
5      { 
6        var button = "<button class='item' onclick='isThereAnItem()'>You see something useful in here.</button>"; 
7        display.found(button); 
8      } 
9    } 
10    
11   function showBrokenThing() 
12   { 
13     //helper variables to make the code easier to read 
14     var brokenThing = player.currentRoom.brokenThing; 
15    
16     //test: Is there a broken thing? 
17     if (brokenThing) 
18     { 
19       //get ready to announce there's a broken thing 
20       var text = "There is a broken "; 
21       text += brokenThing + " in this room. "; 
22       display.broken(text); 
23     } 
24   } 
25    
26   function showInventory(disable) 
27   { 
28     var text = "<h3>Inventory</h3>"; 
29     var length = player.inventory.length; 
30     for (var i = 0; i < length; i++) 
31     { 
32       text += "<button class='inventory' "; 
33    
34       if (!disable) 
35       { 
36         //pay very close attention to punctuation here 
37         //watch the single and double quotes! 
38         text += "onclick='fixBrokenThing(\""; 
39         text += player.inventory[i] + "\")'"; 
40       } 
41       text += ">"; 
42       text += player.inventory[i]; 
43       text += "</button>"; 
44     } 
45     display.inventory(text); 
46   } 
47    
48   function createNavigationButtons(player) 
49   { 
50     var buttons = "<h3>Navigation</h3>"; 
51     var toggle = false; 
52    
53     for (var exit in player.currentRoom.exits) 
54     { 
55       var button = "<button id='" + exit + "' "; 
56    
57       if (toggle)  //add 'even' class to every other button 
58       { 
59         button += "class='even' "; 
60       } 
61       else 
62       { 
63         button += "class='odd' "; 
64       } 
65       toggle = !toggle;     //flip the toggle switch 
66    
67       button += "onclick='movePlayer(this.id)'>"; 
68    
69       var exits = player.currentRoom.exits;    //<--new 
70       var roomName = exits[exit]; 
71       var room = rooms[roomName]; 
72    
73       //show room names only if player has visited before and if we're tracking the player 
74       if (player.pathTaken && player.pathTaken.indexOf(room) !== -1) 
75       { 
76         button += room.name + "<br>(" + exit + ")"; 
77       } 
78       else 
79       { 
80         button += exit; 
81       } 
82    
83       button += "</button>"; 
84       buttons += button;    //add to buttons string 
85     } 
86    
87     if (player.currentRoom.exitHouse)   //<--new 
88     { 
89       //this is all on one line from var to </p>"; 
90       var button = "<p><button id='exit' onclick='enterPasscode();'>Exit House</button></p>"; 
91       buttons += button; 
92     } 
93    
94     display.navigation(buttons); 
95   } 
96    
97   function getDisplay() 
98   { 
99     var display = 
100      { 
101        info: function (text) 
102        { 
103          var element = document.getElementById("info"); 
104          element.innerHTML = text; 
105        }, 
106   
107        found: function (text) 
108        { 
109          var element = document.getElementById("found"); 
110          element.innerHTML = text; 
111        }, 
112   
113        broken: function (text) 
114        { 
115          var element = document.getElementById("broken"); 
116          element.innerHTML = text; 
117        }, 
118   
119        navigation: function (text) 
120        { 
121          var element = document.getElementById("navigation"); 
122          element.innerHTML = text; 
123        }, 
124   
125        gameTitle: function (text) 
126        { 
127          var element = document.getElementById("gameTitle"); 
128          element.innerHTML = text; 
129        }, 
130   
131        inventory: function (text) 
132        { 
133          var element = document.getElementById("inventory"); 
134          element.innerHTML = text; 
135        }, 
136        score: function (clear) 
137        { 
138          var element = document.getElementById("score"); 
139   
140          if (clear) 
141          { 
142            element.innerHTML = ""; 
143            return; 
144          } 
145          player.score = Math.max(0, player.score); 
146          element.innerHTML = "Score: " + player.score; 
147   
148          //if there is a maxScore tally, then show the max 
149          if (player.maxScore > 0) 
150          { 
151            element.innerHTML += " / Max: " + player.maxScore; 
152          } 
153        }, 
154        description: function (room) 
155        { 
156          var element = document.getElementById("description"); 
157   
158          if (!room) 
159          { 
160            element.innerHTML = ""; 
161            return; 
162          } 
163   
164          var innerText = "<h3>You are in the "; 
165          innerText += room.name + ".</h3>"; 
166          innerText += "<p>" + room.description + "</p>"; 
167          element.innerHTML = innerText; 
168        }, 
169        image: function (source) 
170        { 
171          //if no image exists, set up a blank one 
172          if (!source) 
173          { 
174            source = {src: "", caption: ""}; 
175          } 
176   
177          document.getElementById("image").src = source.src; 
178   
179          //set up the caption 
180          var cap = source.caption; 
181   
182          //if image has a link, include it with the caption 
183          if (source.link) 
184          { 
185            cap += "<br><a target='_blank' "; 
186            cap += "href='" + source.link + "'>"; 
187            cap += source.linkInfo + "</a>"; 
188         } 
189   
190          document.getElementById("caption").innerHTML = cap; 
191        }, 
192        clear: function () 
193        { 
194          this.info(""); 
195          this.found(""); 
196          this.broken(""); 
197          this.navigation(""); 
198          this.inventory(""); 
199          this.image(); 
200          this.description(); 
201          this.score(true); 
202        } 
203      }; 
204    return display; 
205  } 
206