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#! perl |
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|
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# The international bank script. There are five commands one can |
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# give the banker in-game: |
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# - help, will show the usage information |
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# - deposit, can deposit a certain amount of a given currency unit |
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# - withdraw, can give out a certain amount of a given currency unit |
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# provided, the bank account has this amount of money |
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# - exchange, will exchange between royalties and platinum coins |
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# - balance, simply shows how much money one has on his/her account. |
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# |
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# TODO: |
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# - Comment more steps |
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# - Implement exchange() |
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|
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# The units are being used in each sub so they are declared globally. |
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my %unit = ( |
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silver => 1, |
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gold => 10, |
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platina => 50, |
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royalty => 5000, |
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); |
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|
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# Subroutine just to calculate exchange rates. |
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sub calc_exchange_rate { |
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my ($value, $from_cur, $to_cur) = @_; |
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|
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$value * $unit{$from_cur} / $unit{$to_cur} |
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} |
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|
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# Calculates and returns how much money someone has starting with the |
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# highest value currency going down. Think of it like having the date |
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# and time in the format of 2006-05-19 03:21:31 UTC instead of 1148001691 |
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# seconds since 1970-01-01 00:00:00 UTC. |
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sub balance { |
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my ($who, $is_wiz) = @_; |
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my $balance = $who->{bank_balance}; |
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|
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unless ($is_wiz) { |
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return "Sorry, you have no balance." |
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unless $balance >= 1; |
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} else { |
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return $who->name." has no balance." |
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unless $balance >= 1; |
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} |
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|
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my $royalties = calc_exchange_rate $balance, "silver", "royalty"; |
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my $platinum = calc_exchange_rate $royalties - (int $royalties), "royalty", "platina"; |
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my $gold = calc_exchange_rate $platinum - (int $platinum), "platina", "gold"; |
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my $silver = calc_exchange_rate $gold - (int $gold), "gold", "silver"; |
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|
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my $account_info = |
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(int $royalties) . " royalties, " |
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. (int $platinum) . " platinum, " |
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. (int $gold) . " gold and about " |
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. (int $silver) ." silver coins."; |
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|
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return "You have $account_info" |
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unless $is_wiz; |
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|
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return $who->name." has $account_info"; |
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} |
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|
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sub transaction { |
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my ($who, $action, $amount, $currency) = @_; |
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my $pay = $amount * $unit{$currency}; |
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|
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return "We don't trade in that currency." |
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unless exists $unit{$currency}; |
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|
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return "You can not $action fractions." |
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unless $amount =~ /^\d+$/; |
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|
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# First check for possible overflow and user stupidity |
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if ($amount > 2**31) { |
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return "Sorry, we do not handle that kind of money for one ".$action."."; |
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} elsif ($amount == 0) { |
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return "You can not ".$action." nothing."; |
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} elsif ($amount < 0) { |
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return "You can not ".$action." negative values."; |
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} |
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|
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# Here we handle the transactions |
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if ($action eq "deposit") { |
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if ($who->pay_amount ($pay)) { |
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$who->{bank_balance} += $pay; |
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return "$amount $currency received."; |
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} else { |
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return "You don't have enough money with you."; |
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} |
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} elsif ($action eq "withdraw") { |
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if ($pay <= $who->{bank_balance}) { |
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my $paid = $who->pay_player_arch ( |
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$currency eq 'royalty' ? 'royalty' : $currency . "coin", |
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$amount |
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); |
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if ($paid) { |
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$who->{bank_balance} -= $pay; |
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} else { |
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$amount = 0; |
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} |
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return "Withdrew $amount $currency"; |
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} else { |
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return "You don't have that much money on your bank account."; |
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} |
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} |
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} |
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|
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sub help { |
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my ($command) = @_; |
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|
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if ($command eq "") { |
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return "You can: |
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deposit <amount> <currency> |
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withdraw <amount> <currency> |
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balance |
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exchange <amount> <direction> |
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help <topic>"; |
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} elsif ($command eq "deposit") { |
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return "You can deposit some of the money you don't currently use in our bank. To do this, ask me to: |
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deposit <amount> <currency>\nSee help exchange for our currencies."; |
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} elsif ($command eq "withdraw") { |
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return "To get the money you stored in our system back, just say: |
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withdraw <amount> <currency>"; |
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} elsif ($command eq "balance") { |
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return "I can tell you how much money you are saving in our bank, just ask me about your balance."; |
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} elsif ($command eq "exchange") { |
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return "We exchange between royalties and platina coins at a very low price. To change from platina to royalties, say: |
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exchange <amount> platina royalty\nTo change from royalties to platina, say: |
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exchange <amount> royalty platina\nWe currently only exchange between these two currencies. If you want to know more about exchange rates, ask me: |
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help exchange rates\nThanks for using our bank."; |
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} elsif ($command eq "exchange rates") { |
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my @units = sort { $unit{$b} <=> $unit{$a} } keys %unit; |
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my $exchange_rates = "Here is a list of exchange rates:\n"; |
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|
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for my $from_cur_nr (0 .. $#units) { |
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for my $to_cur_nr ($from_cur_nr+1 .. $#units) { |
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$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"; |
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} |
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} |
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return $exchange_rates."This may change a bit with the stock markets but don't expect it to be much."; |
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} |
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} |
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|
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cf::register_script_function "bank::command" => sub { |
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my ($who, $msg, $npc) = @_; |
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|
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my ($cmd, $arguments) = split /\s+/, $msg, 2; |
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my ($amount, $currency) = split /\s+/, $arguments, 2; |
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my $service_charge = 5; |
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my @units = sort keys %unit; |
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my $units = join ", ", @units; |
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my $fees = - ($service_charge / 100) + 1; |
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|
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# Have some aliases for currencies |
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if ($currency eq "platinum") { |
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$currency = "platina"; |
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} elsif ($currency eq "royalties") { |
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$currency = "royalty"; |
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} |
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|
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if ($cmd eq "balance") { |
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if ($who->flag (cf::FLAG_WIZ)) { |
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if (my $player = cf::player::find $arguments) { |
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$who->reply ($npc, balance $player->ob, 1); |
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} |
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} else { |
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$who->reply ($npc, balance $who, 0); |
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} |
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|
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} elsif ($cmd eq "balance" and !$arguments) { |
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$who->reply ($npc, "Balance of whom?"); |
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|
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} elsif ($cmd eq "deposit" and $currency) { |
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$who->reply ($npc, transaction $who, "deposit", $amount, $currency); |
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$who->reply ($npc, balance $who); |
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|
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} elsif ($cmd eq "deposit" and $amount and $currency eq "") { |
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$who->reply ($npc, "deposit $amount of what: $units"); |
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|
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} elsif ($cmd eq "deposit" and $amount eq "" and $currency eq "") { |
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$who->reply ($npc, "How much do you want to deposit?"); |
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|
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} elsif ($cmd eq "withdraw" and $currency) { |
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$who->reply ($npc, transaction $who, "withdraw", $amount, $currency); |
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$who->reply ($npc, balance $who); |
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|
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} elsif ($cmd eq "withdraw" and $amount and $currency eq "") { |
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$who->reply ($npc, "Withdraw $amount of what: $units"); |
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|
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} elsif ($cmd eq "withdraw" and $amount eq "" and $currency eq "") { |
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$who->reply ($npc, "How much do you want to withdraw?"); |
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|
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} elsif ($cmd eq "exchange") { |
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$who->reply ($npc, "This function is not yet implemented. Ask me again later."); |
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|
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} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments eq "") { |
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$who->reply ($npc, help $arguments); |
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|
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} elsif ($cmd eq "help" or $cmd eq "yes" and $arguments ne "") { |
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$who->reply ($npc, help); |
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|
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} else { |
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$who->reply ($npc, "Do you need help?"); |
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} |
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} |
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|
