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()
# - Add a DM command to view any user's balance.

# 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) = @_;
   my $balance = $who->{bank_balance};

   return "Sorry, you have 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";

   return "You have "
          . (int $imperials) . " imperials, "
          . (int $platinum) . " platinum, "
          . (int $gold) . " gold and about "
          . (int $silver) ." silver coins.";
}

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 ($amount > 10000) {
      return "Sorry, we do not handle more than 10000 units for one ".$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 ($command eq "exchange") {
      return "We exchange between imperial notes and platinum coins at a very low price. To change from platinum to imperials, say:
      exchange <amount> platina\nTo change from imperials to platinum, say:
      exchange <amount> imperial\nWe currently only exchange between these two currencies. If you want to know more about exchange rates, ask me:
      help exchange rates\nThanks for using our bank.";
   } elsif ($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 ($cmd eq "balance") {
      if ($who->flag (cf::FLAG_WIZ)) {
         my $player = cf::player::find $who->name;
         #$who->message ("$name says: ".balance ($player), cf::NDI_WHITE);
         #} else {
         $who->message ("$name says: ".balance ($who), 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 "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:	1.9
Committed:	Mon May 22 19:09:36 2006 UTC (18 years ago) by pippijn
Branch:	MAIN
Changes since 1.8:	+42 -36 lines
Log Message:	Moved help up.
#	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	1.7	# - Add a DM command to view any user's balance.
16	pippijn	1.1
17			# The units are being used in each sub so they are declared globally.
18	pippijn	1.2	my %unit = (
19	root	1.6	silver => 1,
20			gold => 10,
21			platina => 50,
22	pippijn	1.1	imperial => 10000,
23			);
24
25	pippijn	1.4	# Subroutine just to calculate exchange rates.
26	pippijn	1.2	sub calc_exchange_rate {
27	pippijn	1.1	my ($value, $from_cur, $to_cur) = @_;
28
29	root	1.6	$value * $unit{$from_cur} / $unit{$to_cur}
30	pippijn	1.1	}
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	pippijn	1.2	sub balance {
37	pippijn	1.1	my ($who) = @_;
38			my $balance = $who->{bank_balance};
39
40	root	1.6	return "Sorry, you have no balance."
41			unless $balance;
42	pippijn	1.1
43	root	1.6	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 $silver) ." silver coins.";
53	pippijn	1.1	}
54
55	pippijn	1.2	sub transaction {
56	pippijn	1.1	my ($who, $action, $amount, $currency) = @_;
57	pippijn	1.3	my $pay = $amount * $unit{$currency};
58	pippijn	1.1
59	root	1.6	return "We don't trade in that currency."
60			unless exists $unit{$currency};
61	pippijn	1.4
62	root	1.6	return "You can not $action fractions."
63			unless $amount =~ /^\d+$/;
64	pippijn	1.5
65	pippijn	1.1	# 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	pippijn	1.4	}
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	root	1.6	my $money = cf::object::new "imperial";
87	pippijn	1.4	$money->set_property (1, 24, $amount);
88			$money->insert_in_ob ($who);
89	pippijn	1.1	} else {
90	root	1.6	my $money = cf::object::new $currency . "coin";
91	pippijn	1.4	$money->set_property (1, 24, $amount);
92			$money->insert_in_ob ($who);
93	pippijn	1.1	}
94	pippijn	1.4	return "Withdrew $amount $currency";
95	pippijn	1.1	}
96			}
97			}
98
99	pippijn	1.9	sub help {
100			my ($command) = @_;
101
102			if ($command eq "") {
103			return "You can:
104			deposit <amount> <currency>
105			withdraw <amount> <currency>
106			balance
107			exchange <amount> <direction>
108			help <topic>";
109			} elsif ($command eq "deposit") {
110			return "You can deposit some of the money you don't currently use in our bank. To do this, ask me to:
111			deposit <amount> <currency>\nSee help exchange for our currencies.";
112			} elsif ($command eq "withdraw") {
113			return "To get the money you stored in our system back, just say:
114			withdraw <amount> <currency>";
115			} elsif ($command eq "balance") {
116			return "I can tell you how much money you are saving in our bank, just ask me about your balance.";
117			} elsif ($command eq "exchange") {
118			return "We exchange between imperial notes and platinum coins at a very low price. To change from platinum to imperials, say:
119			exchange <amount> platina\nTo change from imperials to platinum, say:
120			exchange <amount> imperial\nWe currently only exchange between these two currencies. If you want to know more about exchange rates, ask me:
121			help exchange rates\nThanks for using our bank.";
122			} elsif ($command eq "exchange rates") {
123			my @units = sort { $unit{$b} <=> $unit{$a} } keys %unit;
124			my $exchange_rates = "Here is a list of exchange rates:\n";
125
126			for my $from_cur_nr (0 .. $#units) {
127			for my $to_cur_nr ($from_cur_nr+1 .. $#units) {
128			$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";
129			}
130			}
131			return $exchange_rates."This may change a bit with the stock markets but don't expect it to be much.";
132			}
133			}
134
135	pippijn	1.1	sub on_say {
136			my ($event, $ob, $who, $msg) = @_;
137			my ($cmd, $arguments) = split /\s+/, $msg, 2;
138			my ($amount, $currency) = split /\s+/, $arguments, 2;
139	root	1.6	my $name = $ob->name;
140	pippijn	1.1	my $service_charge = 5;
141	pippijn	1.2	my @units = sort keys %unit;
142	pippijn	1.1	my $units = join ", ", @units;
143			my $fees = - ($service_charge / 100) + 1;
144
145			if ($cmd eq "balance") {
146	pippijn	1.9	if ($who->flag (cf::FLAG_WIZ)) {
147			my $player = cf::player::find $who->name;
148			#$who->message ("$name says: ".balance ($player), cf::NDI_WHITE);
149			#} else {
150			$who->message ("$name says: ".balance ($who), cf::NDI_WHITE);
151			}
152	pippijn	1.1
153	root	1.6	} elsif ($cmd eq "deposit" and $currency) {
154			$who->message ("$name says: " . (transaction $who, "deposit", $amount, $currency), cf::NDI_WHITE);
155			$who->message ("$name says: " . (balance $who), cf::NDI_WHITE);
156
157	pippijn	1.2	} elsif ($cmd eq "deposit" and $amount and $currency eq "") {
158	root	1.6	$who->message ("$name says: Deposit $amount of what: $units", cf::NDI_WHITE);
159
160	pippijn	1.1	} elsif ($cmd eq "deposit" and $amount eq "" and $currency eq "") {
161	root	1.6	$who->message ("$name says: How much do you want to deposit?", cf::NDI_WHITE);
162
163			} elsif ($cmd eq "withdraw" and $currency) {
164			$who->message ("$name says: " . (transaction $who, "withdraw", $amount, $currency), cf::NDI_WHITE);
165			$who->message ("$name says: " . (balance $who), cf::NDI_WHITE);
166	pippijn	1.1
167	pippijn	1.2	} elsif ($cmd eq "withdraw" and $amount and $currency eq "") {
168	root	1.6	$who->message ("$name says: Withdraw $amount of what: $units", cf::NDI_WHITE);
169
170	pippijn	1.1	} elsif ($cmd eq "withdraw" and $amount eq "" and $currency eq "") {
171	root	1.6	$who->message ("$name says: How much do you want to withdraw?", cf::NDI_WHITE);
172	pippijn	1.1
173	pippijn	1.7	} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments eq "") {
174	root	1.6	$who->message ("$name says: " . (help $arguments), cf::NDI_WHITE);
175	pippijn	1.4
176	pippijn	1.7	} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments ne "") {
177			$who->message ("$name says: " . (help), cf::NDI_WHITE);
178
179	root	1.6	} else {
180			$who->message ("$name says: Do you need help?", cf::NDI_WHITE);
181	pippijn	1.4	}
182	pippijn	1.1	}
183