1 |
#! perl |
2 |
|
3 |
# The international bank script. There are five commands one can |
4 |
# give the banker in-game: |
5 |
# - help, will show the usage information |
6 |
# - deposit, can deposit a certain amount of a given currency unit |
7 |
# - withdraw, can give out a certain amount of a given currency unit |
8 |
# provided, the bank account has this amount of money |
9 |
# - exchange, will exchange between imperials and platinum coins |
10 |
# - balance, simply shows how much money one has on his/her account. |
11 |
# |
12 |
# TODO: |
13 |
# - Comment more steps |
14 |
# - Implement exchange() |
15 |
# - Add a DM command to view any user's balance. |
16 |
|
17 |
# The units are being used in each sub so they are declared globally. |
18 |
my %unit = ( |
19 |
silver => 1, |
20 |
gold => 10, |
21 |
platina => 50, |
22 |
imperial => 10000, |
23 |
); |
24 |
|
25 |
# Subroutine just to calculate exchange rates. |
26 |
sub calc_exchange_rate { |
27 |
my ($value, $from_cur, $to_cur) = @_; |
28 |
|
29 |
$value * $unit{$from_cur} / $unit{$to_cur} |
30 |
} |
31 |
|
32 |
# Calculates and returns how much money someone has starting with the |
33 |
# highest value currency going down. Think of it like having the date |
34 |
# and time in the format of 2006-05-19 03:21:31 UTC instead of 1148001691 |
35 |
# seconds since 1970-01-01 00:00:00 UTC. |
36 |
sub balance { |
37 |
my ($who) = @_; |
38 |
my $balance = $who->{bank_balance}; |
39 |
|
40 |
return "Sorry, you have no balance." |
41 |
unless $balance; |
42 |
|
43 |
my $imperials = calc_exchange_rate $balance, "silver", "imperial"; |
44 |
my $platinum = calc_exchange_rate $imperials - (int $imperials), "imperial", "platina"; |
45 |
my $gold = calc_exchange_rate $platinum - (int $platinum), "platina", "gold"; |
46 |
my $silver = calc_exchange_rate $gold - (int $gold), "gold", "silver"; |
47 |
|
48 |
return "You have " |
49 |
. (int $imperials) . " imperials, " |
50 |
. (int $platinum) . " platinum, " |
51 |
. (int $gold) . " gold and about " |
52 |
. (int $silver) ." silver coins."; |
53 |
} |
54 |
|
55 |
sub transaction { |
56 |
my ($who, $action, $amount, $currency) = @_; |
57 |
my $pay = $amount * $unit{$currency}; |
58 |
|
59 |
return "We don't trade in that currency." |
60 |
unless exists $unit{$currency}; |
61 |
|
62 |
return "You can not $action fractions." |
63 |
unless $amount =~ /^\d+$/; |
64 |
|
65 |
# First check for possible overflow and user stupidity |
66 |
if ($amount > 10000) { |
67 |
return "Sorry, we do not handle more than 10000 units for one ".$action."."; |
68 |
} elsif ($amount == 0) { |
69 |
return "You can not ".$action." nothing."; |
70 |
} elsif ($amount < 0) { |
71 |
return "You can not ".$action." negative values."; |
72 |
} |
73 |
|
74 |
# Here we handle the transactions |
75 |
if ($action eq "deposit") { |
76 |
if ($who->pay_amount ($pay)) { |
77 |
$who->{bank_balance} += $pay; |
78 |
return "$amount $currency received."; |
79 |
} else { |
80 |
return "You don't have enough money with you."; |
81 |
} |
82 |
} elsif ($action eq "withdraw") { |
83 |
if ($who->{bank_balance} - $pay > 0) { |
84 |
$who->{bank_balance} -= $pay; |
85 |
if ($currency eq "imperial") { |
86 |
my $money = cf::object::new "imperial"; |
87 |
$money->set_property (1, 24, $amount); |
88 |
$money->insert_in_ob ($who); |
89 |
} else { |
90 |
my $money = cf::object::new $currency . "coin"; |
91 |
$money->set_property (1, 24, $amount); |
92 |
$money->insert_in_ob ($who); |
93 |
} |
94 |
return "Withdrew $amount $currency"; |
95 |
} |
96 |
} |
97 |
} |
98 |
|
99 |
sub on_say { |
100 |
my ($event, $ob, $who, $msg) = @_; |
101 |
my ($cmd, $arguments) = split /\s+/, $msg, 2; |
102 |
my ($amount, $currency) = split /\s+/, $arguments, 2; |
103 |
my $name = $ob->name; |
104 |
my $service_charge = 5; |
105 |
my @units = sort keys %unit; |
106 |
my $units = join ", ", @units; |
107 |
my $fees = - ($service_charge / 100) + 1; |
108 |
|
109 |
if ($cmd eq "balance") { |
110 |
$who->message ($ob->name." says: ".balance ($who), cf::NDI_WHITE); |
111 |
|
112 |
} elsif ($cmd eq "deposit" and $currency) { |
113 |
$who->message ("$name says: " . (transaction $who, "deposit", $amount, $currency), cf::NDI_WHITE); |
114 |
$who->message ("$name says: " . (balance $who), cf::NDI_WHITE); |
115 |
|
116 |
} elsif ($cmd eq "deposit" and $amount and $currency eq "") { |
117 |
$who->message ("$name says: Deposit $amount of what: $units", cf::NDI_WHITE); |
118 |
|
119 |
} elsif ($cmd eq "deposit" and $amount eq "" and $currency eq "") { |
120 |
$who->message ("$name says: How much do you want to deposit?", cf::NDI_WHITE); |
121 |
|
122 |
} elsif ($cmd eq "withdraw" and $currency) { |
123 |
$who->message ("$name says: " . (transaction $who, "withdraw", $amount, $currency), cf::NDI_WHITE); |
124 |
$who->message ("$name says: " . (balance $who), cf::NDI_WHITE); |
125 |
|
126 |
} elsif ($cmd eq "withdraw" and $amount and $currency eq "") { |
127 |
$who->message ("$name says: Withdraw $amount of what: $units", cf::NDI_WHITE); |
128 |
|
129 |
} elsif ($cmd eq "withdraw" and $amount eq "" and $currency eq "") { |
130 |
$who->message ("$name says: How much do you want to withdraw?", cf::NDI_WHITE); |
131 |
|
132 |
} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments eq "") { |
133 |
$who->message ("$name says: " . (help $arguments), cf::NDI_WHITE); |
134 |
|
135 |
} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments ne "") { |
136 |
$who->message ("$name says: " . (help), cf::NDI_WHITE); |
137 |
|
138 |
} else { |
139 |
$who->message ("$name says: Do you need help?", cf::NDI_WHITE); |
140 |
} |
141 |
} |
142 |
|
143 |
sub help { |
144 |
my ($command) = @_; |
145 |
|
146 |
if ($command eq "") { |
147 |
return "You can: |
148 |
deposit <amount> <currency> |
149 |
withdraw <amount> <currency> |
150 |
balance |
151 |
exchange <amount> <direction> |
152 |
help <topic>"; |
153 |
} elsif ($command eq "deposit") { |
154 |
return "You can deposit some of the money you don't currently use in our bank. To do this, ask me to: |
155 |
deposit <amount> <currency>\nSee help exchange for our currencies."; |
156 |
} elsif ($command eq "withdraw") { |
157 |
return "To get the money you stored in our system back, just say: |
158 |
withdraw <amount> <currency>"; |
159 |
} elsif ($command eq "balance") { |
160 |
return "I can tell you how much money you are saving in our bank, just ask me about your balance."; |
161 |
} elsif ($command eq "exchange") { |
162 |
return "We exchange between imperial notes and platinum coins at a very low price. To change from platinum to imperials, say: |
163 |
exchange <amount> platina\nTo change from imperials to platinum, say: |
164 |
exchange <amount> imperial\nWe currently only exchange between these two currencies. If you want to know more about exchange rates, ask me: |
165 |
help exchange rates\nThanks for using our bank."; |
166 |
} elsif ($command eq "exchange rates") { |
167 |
my @units = sort { $unit{$b} <=> $unit{$a} } keys %unit; |
168 |
my $exchange_rates = "Here is a list of exchange rates:\n"; |
169 |
|
170 |
for my $from_cur_nr (0 .. $#units) { |
171 |
for my $to_cur_nr ($from_cur_nr+1 .. $#units) { |
172 |
$exchange_rates = $exchange_rates."One $units[$from_cur_nr] is ".calc_exchange_rate(1, $units[$from_cur_nr], $units[$to_cur_nr])." $units[$to_cur_nr]\n"; |
173 |
} |
174 |
} |
175 |
return $exchange_rates."This may change a bit with the stock markets but don't expect it to be much."; |
176 |
} |
177 |
} |