<?php

class ActionBlock
{
	var $assignments, $cvar, $cval;

	function ActionBlock()
	{
		$this->assignments = array();
		$this->cvar = false;
		$this->cval = false;
	}
}

class Action
{
	var $actionblocks;

	function Action()
	{
		$this->actionblocks = array();
	}

	function perform()
	{
		global $location, $vars;
		$this->display_text = '';
		$countblocks = 0;

		foreach($this->actionblocks as $this->block)
		{
			//global $vars;
			if($this->block->cvar == 'else')
			{
				continue;
			}
			if($this->block->cvar != false)
			{
				if(!array_key_exists($this->block->cvar, $vars))
				{
					exit("Game Error: Undefined variable '{$this->block->cvar}' used in 'if' statement.");
				}
			}
			//echo intval($vars[$this->block->cvar]) . " == " . intval($this->block->cval) . "<br>";
			if(intval($vars[$this->block->cvar]) == intval($this->block->cval) || !$this->block->cvar)
			{
				//echo "yup<br>";
				// go ahead and process the if
			}
			elseif($this->actionblocks[$countblocks+1]->cvar == 'else') // if this if has an else
			{
				// process the else instead of the if
				$this->block = $this->actionblocks[$countblocks+1];
			}
			else
			{
				// this isn't true, then...so skip to the next block
				continue;
			}
			foreach($this->block->assignments as $this->assvar => $this->assval)
			{
				switch($this->assvar)
				{
					case false:
						break;
					case 'location':
						$location = $this->assval;
						break;
					case 'display':
						$this->display_text .= $this->assval;
						break;
					default:
						if(!array_key_exists($this->assvar, $vars))
						{
							exit("Game Error: Assignment to undefined variable '{$this->assvar}' detected.");
						}
						$vars[$this->assvar] = $this->assval;
				}
			}
			$countblocks++;
		}
		return $this->display_text;
	}
}


class GameObj
{
	var $actions;
	var $object_description;

	function GameObj()
	{
		$this->actions = array();
	}
}

?>