insertParsedMessageRoll.php

<?php
  function insertParsedMessageRoll($textParts) {
		if(count($textParts) == 1) {
			// default is one d6:
			$text = '/roll '.$this->getUserName().' 1d6 '.$this->rollDice(6);
		} else {
			$diceParts = explode('d', $textParts[1]);
			if(count($diceParts) == 2) {
				//Number of times to roll
				$number = $diceParts[0];
				//Polarity of modifier to use (negative or positive)
				$polarity = '+';
				if(strstr($diceParts[1], '-'))
					$polarity = '-';
				//Split using the correct modifier; if one does not exist, you'll get only the number of sides on the die.
				$sidesParts = explode($polarity, $diceParts[1]);
				$sides = $sidesParts[0];

				// Dice number must be an integer between 1 and 100, else roll only one:
				$number = ($number > 0 && $number <= 100) ?  $number : 1;

				// Add the modifier to the sum if it exists, otherwise set the sum to 0:
				$sum = 0;
				if(count($sidesParts) == 2)
					$sum = $polarity == '+' ? $sidesParts[1] : -1*$sidesParts[1];

				// Sides must be an integer between 1 and 100, else take 6:
				$sides = ($sides > 0 && $sides <= 100) ?  $sides : 6;

				$text = '/roll '.$this->getUserName().' '.$textParts[1].' ';
				for($i=0; $i<$number; $i++) {
					if($i != 0)
						$text .= ',';
					$roll = $this->rollDice($sides);
					$text .= $roll;
					$sum = $sum + $roll;
					$roll = 0;
				}
				$text .= '('.$sum.') ';
			} else {
				// if dice syntax is invalid, roll one d6:
				$text = '/roll '.$this->getUserName().' 1d6 '.$this->rollDice(6);
			}
		}
		$this->insertChatBotMessage(
			$this->getChannel(),
			$text
		);
	}
?>