-
Notifications
You must be signed in to change notification settings - Fork 2
/
app.js
113 lines (93 loc) · 4.99 KB
/
app.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
/* The Pig Game
GAME RULES:
- The game has 2 players, playing in rounds
- In each turn, a player rolls a dice as many times as he whishes. Each result get added to
his ROUND score
- BUT, if the player rolls a 1, all his ROUND score gets lost. After that, it's the next
player's turn
- The player can choose to 'Hold', which means that his ROUND score gets added to his GLOBAL
score. After that, it's the next player's turn
- The first player to reach 100 points on GLOBAL score wins the game
*/
/********************************************************************************************
* What we'll learn:
* 1. How to use ternary operators
* 2. How to add, remove & toggle HTML classes for an element
*/
// We generally write variable declarations on top for a small project, so that the code
// seems uniform and simple to navigate.
var scores, roundScore, activePlayer;
scores = [0,0];
roundScore = 0;
activePlayer = 0; // 0 => Player-1; 1 => Player-2
// Hide the dice image when opening the page for the first time
document.querySelector('.dice').style.display = "none";
document.getElementById("score-0").textContent = "0"; // Set Initial Score for Player 1 = 0
document.getElementById("score-1").textContent = "0"; // Set Initial Score for Player 2 = 0
document.getElementById("current-0").textContent = "0"; //Init Overall Score for Player 1 = 0
document.getElementById("current-1").textContent = "0"; //Init Overall Score for Player 2 = 0
// Event Handler for Rolling the Dice
document.querySelector(".btn-roll").addEventListener("click", function() {
// 1. Generate a Random Number for the dice:
var dice = Math.floor(Math.random() * 6) + 1;
// 2. Display the Result
var diceDOM = document.querySelector(".dice");
// Since the diceDOM is an <img> element, we can access its src attribute as a property
diceDOM.src = "./img/dice-" + dice + ".png";
diceDOM.style.display = "block";
// 3. Update the roundScore iff dice !== 1
if(dice !== 1) { // When we don't roll a 1
/* Add the score generated by the dice to the roundScore: */
roundScore += dice;
/* Display the roundScore to the current activePlayer's temporary score holder */
document.getElementById("current-" + activePlayer).textContent = roundScore;
} else { // When we roll a 1
/* Change the activePlayer using the ternary operator */
activePlayer = activePlayer === 0 ? 1 : 0;
/* Reset the roundScore to 0 */
roundScore = 0;
/* Set the current scores of both Players (P1 & P2) to 0 */
document.getElementById("current-0").textContent = 0;
document.getElementById("current-1").textContent = 0;
/**
* Apply the active class to emphasize the current player who has the current turn
* to throw the die using the classList property as follows:
*/
// if (activePlayer === 0) { // P1's turn
// document.querySelector(".player-1-panel").classList.remove("active");
// document.querySelector(".player-0-panel").classList.add("active");
// } else {
// document.querySelector(".player-1-panel").classList.add("active");
// document.querySelector(".player-0-panel").classList.remove("active");
// }
/**
* The code above is too big and tedious. Instead, we just use a single toggle()
* method in the classList property as follows:
*/
document.querySelector(".player-1-panel").classList.toggle("active");
document.querySelector(".player-0-panel").classList.toggle("active");
/**
* toggle() method will remove the .active class from the intended element, if it
* was applied to the element before, and it will apply the .active class to the
* intended element if it was not applied to the intended element.
*/
/* Hide the dice image when we roll a 1 */
document.querySelector(".dice").style.display = "none";
}
});
// Event Handler for Showing the Rules
document.querySelector("#rules").addEventListener('click', function() {
var rule = [];
rule[0] = "The game has 2 players, playing in rounds (By default, Player 1 starts)";
rule[1] = "In each turn, a player rolls a dice as many times as s/he wishes. Each die roll's result gets added to their ROUND score";
rule[2] = "BUT, if the player rolls a 1, entire ROUND score accumulated till now, becomes 0. After that, it's the next player's turn";
rule[3] = "The player can choose to 'Hold', which means that the current player's ROUND score gets added to their GLOBAL score. After that, it's the next player's turn";
rule[4] = "The first player to reach 100 points on GLOBAL score wins the game";
var showAlert = function(messageList) {
var messageString = "";
for(var i = 0; i < messageList.length; ++i)
messageString += (i + 1) + ". " + messageList[i] + ".\n";
alert(messageString);
}
showAlert(rule);
});