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https://github.com/vichan-devel/vichan.git
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115 lines
3.3 KiB
PHP
115 lines
3.3 KiB
PHP
<?php
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namespace Vichan\Functions\Dice;
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function _get_or_default_int(array $arr, int $index, int $default) {
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return (isset($arr[$index]) && is_numeric($arr[$index])) ? (int)$arr[$index] : $default;
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}
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/* Die rolling:
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* If "dice XdY+/-Z" is in the email field (where X or +/-Z may be
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* missing), X Y-sided dice are rolled and summed, with the modifier Z
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* added on. The result is displayed at the top of the post.
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*/
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function email_dice_roll($post) {
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global $config;
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if(strpos(strtolower($post->email), 'dice%20') === 0) {
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$dicestr = str_split(substr($post->email, strlen('dice%20')));
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// Get params
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$diceX = '';
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$diceY = '';
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$diceZ = '';
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$curd = 'diceX';
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for($i = 0; $i < count($dicestr); $i ++) {
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if(is_numeric($dicestr[$i])) {
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$$curd .= $dicestr[$i];
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} else if($dicestr[$i] == 'd') {
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$curd = 'diceY';
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} else if($dicestr[$i] == '-' || $dicestr[$i] == '+') {
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$curd = 'diceZ';
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$$curd = $dicestr[$i];
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}
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}
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// Default values for X and Z
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if($diceX == '') {
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$diceX = '1';
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}
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if($diceZ == '') {
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$diceZ = '+0';
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}
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// Intify them
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$diceX = intval($diceX);
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$diceY = intval($diceY);
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$diceZ = intval($diceZ);
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// Continue only if we have valid values
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if($diceX > 0 && $diceY > 0) {
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$dicerolls = array();
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$dicesum = $diceZ;
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for($i = 0; $i < $diceX; $i++) {
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$roll = rand(1, $diceY);
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$dicerolls[] = $roll;
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$dicesum += $roll;
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}
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// Prepend the result to the post body
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$modifier = ($diceZ != 0) ? ((($diceZ < 0) ? ' - ' : ' + ') . abs($diceZ)) : '';
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$dicesum = ($diceX > 1) ? ' = ' . $dicesum : '';
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$post->body = '<table class="diceroll"><tr><td><img src="'.$config['dir']['static'].'d10.svg" alt="Dice roll" width="24"></td><td>Rolled ' . implode(', ', $dicerolls) . $modifier . $dicesum . '</td></tr></table><br/>' . $post->body;
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}
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}
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}
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/**
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* Rolls a dice and generates the appropriate html from the markup.
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* @param array $matches The array of the matches according to the default configuration.
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* 1 -> The number of dices to roll.
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* 3 -> The number faces of the dices.
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* 4 -> The offset to apply to the dice.
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* @param string $img_path Path to the image to use relative to the root. Null if none.
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* @return string The html to replace the original markup with.
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*/
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function inline_dice_roll_markup(array $matches, ?string $img_path): string {
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global $config;
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$dice_count = _get_or_default_int($matches, 1, 1);
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$dice_faces = _get_or_default_int($matches, 3, 6);
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$dice_offset = _get_or_default_int($matches, 4, 0);
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// Clamp between 1 and max_roll_count.
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$dice_count = max(min($dice_count, $config['max_roll_count']), 1);
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// Must be at least 2.
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if ($dice_faces < 2) {
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$dice_faces = 6;
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}
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$tot = 0;
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for ($i = 0; $i < $dice_count; $i++) {
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$tot += mt_rand(1, $dice_faces);
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}
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// Ensure that final result is at least an integer.
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$tot = abs((int)($dice_offset + $tot));
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if ($img_path !== null) {
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$img_text = "<img src='{$config['root']}{$img_path}' alt='dice' title='dice' class=\"inline-dice\"/>";
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} else {
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$img_text = '';
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}
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if ($dice_offset === 0) {
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$dice_offset_text = '';
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} elseif ($dice_offset > 0) {
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$dice_offset_text = "+{$dice_offset}";
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} else {
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$dice_offset_text = (string)$dice_offset;
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}
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return "<span>$img_text {$dice_count}d{$dice_faces}{$dice_offset_text} = <b>$tot</b></span>";
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}
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