maps/perl/bank.ext

#! perl

# The international bank script. There are five commands one can
# give the banker in-game:
# - help, will show the usage information
# - deposit, can deposit a certain amount of a given currency unit
# - withdraw, can give out a certain amount of a given currency unit
#      provided, the bank account has this amount of money
# - exchange, will exchange between royalties and platinum coins
# - balance, simply shows how much money one has on his/her account.
#
# TODO:
# - Comment more steps
# - Implement exchange()

# The units are being used in each sub so they are declared globally.
my %unit = (
   silver   => 1,
   gold     => 10,
   platina  => 50,
   royalty  => 5000,
); 

# Subroutine just to calculate exchange rates.
sub calc_exchange_rate {
   my ($value, $from_cur, $to_cur) = @_;

   $value * $unit{$from_cur} / $unit{$to_cur}
}

# Calculates and returns how much money someone has starting with the
# highest value currency going down. Think of it like having the date
# and time in the format of 2006-05-19 03:21:31 UTC instead of 1148001691
# seconds since 1970-01-01 00:00:00 UTC.
sub balance {
   my ($who, $is_wiz) = @_;
   my $balance = $who->{bank_balance};

   unless ($is_wiz) {
      return "Sorry, you have no balance."
         unless $balance >= 1;
   } else {
      return $who->name." has no balance."
         unless $balance >= 1;
   }

   my $royalties = calc_exchange_rate $balance, "silver", "royalty";
   my $platinum  = calc_exchange_rate $royalties - (int $royalties), "royalty", "platina";
   my $gold      = calc_exchange_rate $platinum - (int $platinum), "platina", "gold";
   my $silver    = calc_exchange_rate $gold - (int $gold), "gold", "silver";

   my $account_info =
            (int $royalties) . " royalties, "
          . (int $platinum) . " platinum, "
          . (int $gold) . " gold and about "
          . (int $silver) ." silver coins.";

   return "You have $account_info"
      unless $is_wiz;

   return $who->name." has $account_info";
}

sub transaction {
   my ($who, $action, $amount, $currency) = @_;
   my $pay = $amount * $unit{$currency};

   return "We don't trade in that currency."
      unless exists $unit{$currency};

   return "You can not $action fractions."
      unless $amount =~ /^\d+$/;

   # First check for possible overflow and user stupidity
   if ($amount > 2**31) {
      return "Sorry, we do not handle that kind of money for one ".$action.".";
   } elsif ($amount == 0) {
      return "You can not ".$action." nothing.";
   } elsif ($amount < 0) {
      return "You can not ".$action." negative values.";
   }

   # Here we handle the transactions 
   if ($action eq "deposit") {
      if ($who->pay_amount ($pay)) {
         $who->{bank_balance} += $pay;
         return "$amount $currency received.";
      } else {
         return "You don't have enough money with you.";
      }
   } elsif ($action eq "withdraw") {
      if ($pay <= $who->{bank_balance}) {
         $who->{bank_balance} -= $pay;
         if ($currency eq "royalty") {
            my $money = cf::object::new "royalty";
            $money->set_property (1, 24, $amount);
            $money->insert_in_ob ($who);
         } else {
            my $money = cf::object::new $currency . "coin";
            $money->set_property (1, 24, $amount);
            $money->insert_in_ob ($who);
         }
         return "Withdrew $amount $currency";
      } else {
         return "You don't have that much money on your bank account.";
      }
   }
}

sub help {
   my ($command) = @_;

   if ($command eq "") {
      return "You can:
      deposit <amount> <currency>
      withdraw <amount> <currency>
      balance
      exchange <amount> <direction>
      help <topic>";
   } elsif ($command eq "deposit") {
      return "You can deposit some of the money you don't currently use in our bank. To do this, ask me to:
      deposit <amount> <currency>\nSee help exchange for our currencies.";
   } elsif ($command eq "withdraw") {
      return "To get the money you stored in our system back, just say:
      withdraw <amount> <currency>";
   } elsif ($command eq "balance") {
      return "I can tell you how much money you are saving in our bank, just ask me about your balance.";
   } elsif ($command eq "exchange") {
      return "We exchange between royalties and platina coins at a very low price. To change from platina to royalties, say:
      exchange <amount> platina royalty\nTo change from royalties to platina, say:
      exchange <amount> royalty platina\nWe currently only exchange between these two currencies. If you want to know more about exchange rates, ask me:
      help exchange rates\nThanks for using our bank.";
   } elsif ($command eq "exchange rates") {
      my @units = sort { $unit{$b} <=> $unit{$a} } keys %unit;
      my $exchange_rates = "Here is a list of exchange rates:\n";

      for my $from_cur_nr (0 .. $#units) {
         for my $to_cur_nr ($from_cur_nr+1 .. $#units) {
            $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";
         }
      }
      return $exchange_rates."This may change a bit with the stock markets but don't expect it to be much.";
   }
}

sub on_say {
   my ($event, $ob, $who, $msg) = @_;
   my ($cmd, $arguments) = split /\s+/, $msg, 2;
   my ($amount, $currency) = split /\s+/, $arguments, 2;
   my $name = $ob->name;
   my $service_charge = 5;
   my @units = sort keys %unit;
   my $units = join ", ", @units;
   my $fees = - ($service_charge / 100) + 1;

   # Have some aliases for currencies
   if ($currency eq "platinum") {
      $currency = "platina";
   } elsif ($currency eq "royalties") {
      $currency = "royalty";
   }

   if ($cmd eq "balance") {
      if ($who->flag (cf::FLAG_WIZ)) {
         if (my $player = cf::player::find $arguments) {
            $who->message ("$name says: ".balance ($player->ob, 1), cf::NDI_WHITE);
         }
      } else {
         $who->message ("$name says: ".balance ($who, 0), cf::NDI_WHITE);
      }

   } elsif ($cmd eq "balance" and !$arguments) {
      $who->message ("$name says: Balance of whom?", cf::NDI_WHITE);

   } elsif ($cmd eq "deposit" and $currency) {
      $who->message ("$name says: " . (transaction $who, "deposit", $amount, $currency), cf::NDI_WHITE);
      $who->message ("$name says: " . (balance $who), cf::NDI_WHITE);
      
   } elsif ($cmd eq "deposit" and $amount and $currency eq "") {
      $who->message ("$name says: Deposit $amount of what: $units", cf::NDI_WHITE);

   } elsif ($cmd eq "deposit" and $amount eq "" and $currency eq "") {
      $who->message ("$name says: How much do you want to deposit?", cf::NDI_WHITE);

   } elsif ($cmd eq "withdraw" and $currency) {
      $who->message ("$name says: " . (transaction $who, "withdraw", $amount, $currency), cf::NDI_WHITE);
      $who->message ("$name says: " . (balance $who), cf::NDI_WHITE);

   } elsif ($cmd eq "withdraw" and $amount and $currency eq "") {
      $who->message ("$name says: Withdraw $amount of what: $units", cf::NDI_WHITE);

   } elsif ($cmd eq "withdraw" and $amount eq "" and $currency eq "") {
      $who->message ("$name says: How much do you want to withdraw?", cf::NDI_WHITE);

   } elsif ($cmd eq "exchange") {
      $who->message ("$name says: This function is not yet implemented. Ask me again later.", cf::NDI_WHITE);

   } elsif ($cmd eq "help" or $cmd eq "yes" and $arguments eq "") {
      $who->message ("$name says: " . (help $arguments), cf::NDI_WHITE);

   } elsif ($cmd eq "help" or $cmd eq "yes" and $arguments ne "") {
      $who->message ("$name says: " . (help), cf::NDI_WHITE);

   } else {
      $who->message ("$name says: Do you need help?", cf::NDI_WHITE);
   }
}

Revision:	1.17
Committed:	Wed May 31 14:48:29 2006 UTC (17 years, 11 months ago) by pippijn
Branch:	MAIN
Changes since 1.16:	+1 -1 lines
Log Message:	Fixed bug: can't withdraw your last coin. Patch by: Saladon Bug ticket: http://cf.schmorp.de/tracker/view.php?id=70
#	Content
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 royalties 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
16	# The units are being used in each sub so they are declared globally.
17	my %unit = (
18	silver => 1,
19	gold => 10,
20	platina => 50,
21	royalty => 5000,
22	);
23
24	# Subroutine just to calculate exchange rates.
25	sub calc_exchange_rate {
26	my ($value, $from_cur, $to_cur) = @_;
27
28	$value * $unit{$from_cur} / $unit{$to_cur}
29	}
30
31	# Calculates and returns how much money someone has starting with the
32	# highest value currency going down. Think of it like having the date
33	# and time in the format of 2006-05-19 03:21:31 UTC instead of 1148001691
34	# seconds since 1970-01-01 00:00:00 UTC.
35	sub balance {
36	my ($who, $is_wiz) = @_;
37	my $balance = $who->{bank_balance};
38
39	unless ($is_wiz) {
40	return "Sorry, you have no balance."
41	unless $balance >= 1;
42	} else {
43	return $who->name." has no balance."
44	unless $balance >= 1;
45	}
46
47	my $royalties = calc_exchange_rate $balance, "silver", "royalty";
48	my $platinum = calc_exchange_rate $royalties - (int $royalties), "royalty", "platina";
49	my $gold = calc_exchange_rate $platinum - (int $platinum), "platina", "gold";
50	my $silver = calc_exchange_rate $gold - (int $gold), "gold", "silver";
51
52	my $account_info =
53	(int $royalties) . " royalties, "
54	. (int $platinum) . " platinum, "
55	. (int $gold) . " gold and about "
56	. (int $silver) ." silver coins.";
57
58	return "You have $account_info"
59	unless $is_wiz;
60
61	return $who->name." has $account_info";
62	}
63
64	sub transaction {
65	my ($who, $action, $amount, $currency) = @_;
66	my $pay = $amount * $unit{$currency};
67
68	return "We don't trade in that currency."
69	unless exists $unit{$currency};
70
71	return "You can not $action fractions."
72	unless $amount =~ /^\d+$/;
73
74	# First check for possible overflow and user stupidity
75	if ($amount > 2**31) {
76	return "Sorry, we do not handle that kind of money for one ".$action.".";
77	} elsif ($amount == 0) {
78	return "You can not ".$action." nothing.";
79	} elsif ($amount < 0) {
80	return "You can not ".$action." negative values.";
81	}
82
83	# Here we handle the transactions
84	if ($action eq "deposit") {
85	if ($who->pay_amount ($pay)) {
86	$who->{bank_balance} += $pay;
87	return "$amount $currency received.";
88	} else {
89	return "You don't have enough money with you.";
90	}
91	} elsif ($action eq "withdraw") {
92	if ($pay <= $who->{bank_balance}) {
93	$who->{bank_balance} -= $pay;
94	if ($currency eq "royalty") {
95	my $money = cf::object::new "royalty";
96	$money->set_property (1, 24, $amount);
97	$money->insert_in_ob ($who);
98	} else {
99	my $money = cf::object::new $currency . "coin";
100	$money->set_property (1, 24, $amount);
101	$money->insert_in_ob ($who);
102	}
103	return "Withdrew $amount $currency";
104	} else {
105	return "You don't have that much money on your bank account.";
106	}
107	}
108	}
109
110	sub help {
111	my ($command) = @_;
112
113	if ($command eq "") {
114	return "You can:
115	deposit <amount> <currency>
116	withdraw <amount> <currency>
117	balance
118	exchange <amount> <direction>
119	help <topic>";
120	} elsif ($command eq "deposit") {
121	return "You can deposit some of the money you don't currently use in our bank. To do this, ask me to:
122	deposit <amount> <currency>\nSee help exchange for our currencies.";
123	} elsif ($command eq "withdraw") {
124	return "To get the money you stored in our system back, just say:
125	withdraw <amount> <currency>";
126	} elsif ($command eq "balance") {
127	return "I can tell you how much money you are saving in our bank, just ask me about your balance.";
128	} elsif ($command eq "exchange") {
129	return "We exchange between royalties and platina coins at a very low price. To change from platina to royalties, say:
130	exchange <amount> platina royalty\nTo change from royalties to platina, say:
131	exchange <amount> royalty platina\nWe currently only exchange between these two currencies. If you want to know more about exchange rates, ask me:
132	help exchange rates\nThanks for using our bank.";
133	} elsif ($command eq "exchange rates") {
134	my @units = sort { $unit{$b} <=> $unit{$a} } keys %unit;
135	my $exchange_rates = "Here is a list of exchange rates:\n";
136
137	for my $from_cur_nr (0 .. $#units) {
138	for my $to_cur_nr ($from_cur_nr+1 .. $#units) {
139	$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";
140	}
141	}
142	return $exchange_rates."This may change a bit with the stock markets but don't expect it to be much.";
143	}
144	}
145
146	sub on_say {
147	my ($event, $ob, $who, $msg) = @_;
148	my ($cmd, $arguments) = split /\s+/, $msg, 2;
149	my ($amount, $currency) = split /\s+/, $arguments, 2;
150	my $name = $ob->name;
151	my $service_charge = 5;
152	my @units = sort keys %unit;
153	my $units = join ", ", @units;
154	my $fees = - ($service_charge / 100) + 1;
155
156	# Have some aliases for currencies
157	if ($currency eq "platinum") {
158	$currency = "platina";
159	} elsif ($currency eq "royalties") {
160	$currency = "royalty";
161	}
162
163	if ($cmd eq "balance") {
164	if ($who->flag (cf::FLAG_WIZ)) {
165	if (my $player = cf::player::find $arguments) {
166	$who->message ("$name says: ".balance ($player->ob, 1), cf::NDI_WHITE);
167	}
168	} else {
169	$who->message ("$name says: ".balance ($who, 0), cf::NDI_WHITE);
170	}
171
172	} elsif ($cmd eq "balance" and !$arguments) {
173	$who->message ("$name says: Balance of whom?", cf::NDI_WHITE);
174
175	} elsif ($cmd eq "deposit" and $currency) {
176	$who->message ("$name says: " . (transaction $who, "deposit", $amount, $currency), cf::NDI_WHITE);
177	$who->message ("$name says: " . (balance $who), cf::NDI_WHITE);
178
179	} elsif ($cmd eq "deposit" and $amount and $currency eq "") {
180	$who->message ("$name says: Deposit $amount of what: $units", cf::NDI_WHITE);
181
182	} elsif ($cmd eq "deposit" and $amount eq "" and $currency eq "") {
183	$who->message ("$name says: How much do you want to deposit?", cf::NDI_WHITE);
184
185	} elsif ($cmd eq "withdraw" and $currency) {
186	$who->message ("$name says: " . (transaction $who, "withdraw", $amount, $currency), cf::NDI_WHITE);
187	$who->message ("$name says: " . (balance $who), cf::NDI_WHITE);
188
189	} elsif ($cmd eq "withdraw" and $amount and $currency eq "") {
190	$who->message ("$name says: Withdraw $amount of what: $units", cf::NDI_WHITE);
191
192	} elsif ($cmd eq "withdraw" and $amount eq "" and $currency eq "") {
193	$who->message ("$name says: How much do you want to withdraw?", cf::NDI_WHITE);
194
195	} elsif ($cmd eq "exchange") {
196	$who->message ("$name says: This function is not yet implemented. Ask me again later.", cf::NDI_WHITE);
197
198	} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments eq "") {
199	$who->message ("$name says: " . (help $arguments), cf::NDI_WHITE);
200
201	} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments ne "") {
202	$who->message ("$name says: " . (help), cf::NDI_WHITE);
203
204	} else {
205	$who->message ("$name says: Do you need help?", cf::NDI_WHITE);
206	}
207	}
208