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 imperials 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, 
   imperial => 10000, 
); 

# 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;
   } else {
      return $who->name." has no balance."
         unless $balance;
   }

   my $imperials = calc_exchange_rate $balance, "silver", "imperial";
   my $platinum  = calc_exchange_rate $imperials - (int $imperials), "imperial", "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 $imperials) . " imperials, "
          . (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 ($who->{bank_balance} - $pay > 0) {
         $who->{bank_balance} -= $pay;
         if ($currency eq "imperial") {
            my $money = cf::object::new "imperial";
            $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";
      }
   }
}

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 ($command eq "exchange") {
      return "We exchange between imperial notes and platina coins at a very low price. To change from platina to imperials, say:
      exchange <amount> platina\nTo change from imperials to platina, say:
      exchange <amount> imperial\nWe currently only exchange between these two currencies. If you want to know more about exchange rates, ask me:
      help exchange rates\nThanks for using our bank.";
   } elsif ($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;
   if ($currency eq "platinum") {
      $currency = "platina";
   }


   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:	1.15
Committed:	Tue May 23 13:07:10 2006 UTC (18 years ago) by pippijn
Branch:	MAIN
Changes since 1.14:	+2 -2 lines
Log Message:	Reduced the limit again, because Crossfire indeed has a limit of 2**31.
#	User	Rev	Content
1	pippijn	1.1	#! 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	pippijn	1.5	# - Implement exchange()
15	pippijn	1.1
16			# The units are being used in each sub so they are declared globally.
17	pippijn	1.2	my %unit = (
18	root	1.6	silver => 1,
19			gold => 10,
20			platina => 50,
21	pippijn	1.1	imperial => 10000,
22			);
23
24	pippijn	1.4	# Subroutine just to calculate exchange rates.
25	pippijn	1.2	sub calc_exchange_rate {
26	pippijn	1.1	my ($value, $from_cur, $to_cur) = @_;
27
28	root	1.6	$value * $unit{$from_cur} / $unit{$to_cur}
29	pippijn	1.1	}
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	pippijn	1.2	sub balance {
36	pippijn	1.10	my ($who, $is_wiz) = @_;
37	pippijn	1.1	my $balance = $who->{bank_balance};
38
39	pippijn	1.12	unless ($is_wiz) {
40			return "Sorry, you have no balance."
41			unless $balance;
42			} else {
43			return $who->name." has no balance."
44			unless $balance;
45			}
46	pippijn	1.1
47	root	1.6	my $imperials = calc_exchange_rate $balance, "silver", "imperial";
48			my $platinum = calc_exchange_rate $imperials - (int $imperials), "imperial", "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	pippijn	1.12	my $account_info =
53			(int $imperials) . " imperials, "
54	root	1.6	. (int $platinum) . " platinum, "
55			. (int $gold) . " gold and about "
56			. (int $silver) ." silver coins.";
57	pippijn	1.12
58			return "You have $account_info"
59			unless $is_wiz;
60
61			return $who->name." has $account_info";
62	pippijn	1.1	}
63
64	pippijn	1.2	sub transaction {
65	pippijn	1.1	my ($who, $action, $amount, $currency) = @_;
66	pippijn	1.3	my $pay = $amount * $unit{$currency};
67	pippijn	1.1
68	root	1.6	return "We don't trade in that currency."
69			unless exists $unit{$currency};
70	pippijn	1.4
71	root	1.6	return "You can not $action fractions."
72			unless $amount =~ /^\d+$/;
73	pippijn	1.5
74	pippijn	1.1	# First check for possible overflow and user stupidity
75	pippijn	1.15	if ($amount > 2**31) {
76			return "Sorry, we do not handle that kind of money for one ".$action.".";
77	pippijn	1.1	} elsif ($amount == 0) {
78			return "You can not ".$action." nothing.";
79			} elsif ($amount < 0) {
80			return "You can not ".$action." negative values.";
81	pippijn	1.4	}
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 ($who->{bank_balance} - $pay > 0) {
93			$who->{bank_balance} -= $pay;
94			if ($currency eq "imperial") {
95	root	1.6	my $money = cf::object::new "imperial";
96	pippijn	1.4	$money->set_property (1, 24, $amount);
97			$money->insert_in_ob ($who);
98	pippijn	1.1	} else {
99	root	1.6	my $money = cf::object::new $currency . "coin";
100	pippijn	1.4	$money->set_property (1, 24, $amount);
101			$money->insert_in_ob ($who);
102	pippijn	1.1	}
103	pippijn	1.4	return "Withdrew $amount $currency";
104	pippijn	1.1	}
105			}
106			}
107
108	pippijn	1.9	sub help {
109			my ($command) = @_;
110
111			if ($command eq "") {
112			return "You can:
113			deposit <amount> <currency>
114			withdraw <amount> <currency>
115			balance
116			exchange <amount> <direction>
117			help <topic>";
118			} elsif ($command eq "deposit") {
119			return "You can deposit some of the money you don't currently use in our bank. To do this, ask me to:
120			deposit <amount> <currency>\nSee help exchange for our currencies.";
121			} elsif ($command eq "withdraw") {
122			return "To get the money you stored in our system back, just say:
123			withdraw <amount> <currency>";
124			} elsif ($command eq "balance") {
125			return "I can tell you how much money you are saving in our bank, just ask me about your balance.";
126			} elsif ($command eq "exchange") {
127	pippijn	1.14	return "We exchange between imperial notes and platina coins at a very low price. To change from platina to imperials, say:
128			exchange <amount> platina\nTo change from imperials to platina, say:
129	pippijn	1.9	exchange <amount> imperial\nWe currently only exchange between these two currencies. If you want to know more about exchange rates, ask me:
130			help exchange rates\nThanks for using our bank.";
131			} elsif ($command eq "exchange rates") {
132			my @units = sort { $unit{$b} <=> $unit{$a} } keys %unit;
133			my $exchange_rates = "Here is a list of exchange rates:\n";
134
135			for my $from_cur_nr (0 .. $#units) {
136			for my $to_cur_nr ($from_cur_nr+1 .. $#units) {
137			$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";
138			}
139			}
140			return $exchange_rates."This may change a bit with the stock markets but don't expect it to be much.";
141			}
142			}
143
144	pippijn	1.1	sub on_say {
145			my ($event, $ob, $who, $msg) = @_;
146			my ($cmd, $arguments) = split /\s+/, $msg, 2;
147			my ($amount, $currency) = split /\s+/, $arguments, 2;
148	root	1.6	my $name = $ob->name;
149	pippijn	1.1	my $service_charge = 5;
150	pippijn	1.2	my @units = sort keys %unit;
151	pippijn	1.1	my $units = join ", ", @units;
152			my $fees = - ($service_charge / 100) + 1;
153	pippijn	1.14	if ($currency eq "platinum") {
154			$currency = "platina";
155			}
156
157	pippijn	1.1
158			if ($cmd eq "balance") {
159	pippijn	1.9	if ($who->flag (cf::FLAG_WIZ)) {
160	pippijn	1.11	if (my $player = cf::player::find $arguments) {
161			$who->message ("$name says: ".balance ($player->ob, 1), cf::NDI_WHITE);
162			}
163	pippijn	1.10	} else {
164			$who->message ("$name says: ".balance ($who, 0), cf::NDI_WHITE);
165	pippijn	1.9	}
166	pippijn	1.1
167	pippijn	1.12	} elsif ($cmd eq "balance" and !$arguments) {
168			$who->message ("$name says: Balance of whom?", cf::NDI_WHITE);
169
170	root	1.6	} elsif ($cmd eq "deposit" and $currency) {
171			$who->message ("$name says: " . (transaction $who, "deposit", $amount, $currency), cf::NDI_WHITE);
172			$who->message ("$name says: " . (balance $who), cf::NDI_WHITE);
173
174	pippijn	1.2	} elsif ($cmd eq "deposit" and $amount and $currency eq "") {
175	root	1.6	$who->message ("$name says: Deposit $amount of what: $units", cf::NDI_WHITE);
176
177	pippijn	1.1	} elsif ($cmd eq "deposit" and $amount eq "" and $currency eq "") {
178	root	1.6	$who->message ("$name says: How much do you want to deposit?", cf::NDI_WHITE);
179
180			} elsif ($cmd eq "withdraw" and $currency) {
181			$who->message ("$name says: " . (transaction $who, "withdraw", $amount, $currency), cf::NDI_WHITE);
182			$who->message ("$name says: " . (balance $who), cf::NDI_WHITE);
183	pippijn	1.1
184	pippijn	1.2	} elsif ($cmd eq "withdraw" and $amount and $currency eq "") {
185	root	1.6	$who->message ("$name says: Withdraw $amount of what: $units", cf::NDI_WHITE);
186
187	pippijn	1.1	} elsif ($cmd eq "withdraw" and $amount eq "" and $currency eq "") {
188	root	1.6	$who->message ("$name says: How much do you want to withdraw?", cf::NDI_WHITE);
189	pippijn	1.1
190	pippijn	1.14	} elsif ($cmd eq "exchange") {
191			$who->message ("$name says: This function is not yet implemented. Ask me again later.", cf::NDI_WHITE);
192
193	pippijn	1.7	} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments eq "") {
194	root	1.6	$who->message ("$name says: " . (help $arguments), cf::NDI_WHITE);
195	pippijn	1.4
196	pippijn	1.7	} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments ne "") {
197			$who->message ("$name says: " . (help), cf::NDI_WHITE);
198
199	root	1.6	} else {
200			$who->message ("$name says: Do you need help?", cf::NDI_WHITE);
201	pippijn	1.4	}
202	pippijn	1.1	}
203