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/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file script_base.hpp Everything to query basic things. */
#ifndef SCRIPT_BASE_HPP
#define SCRIPT_BASE_HPP
#include "script_object.hpp"
/**
* Class that handles some basic functions.
* @api ai game
*
* @note The random functions are not called Random and RandomRange, because
* RANDOM_DEBUG does some tricky stuff, which messes with those names.
* @note In MP we cannot use Random because that will cause desyncs (scripts are
* ran on the server only, not on all clients). This means that
* we use InteractiveRandom in MP. Rand() takes care of this for you.
*/
class ScriptBase : public ScriptObject {
public:
/**
* Get a random value.
* @return A random value between 0 and MAX(uint32).
*/
static uint32 Rand();
/**
* Get a random value.
* @param unused_param This parameter is not used, but is needed to work with lists.
* @return A random value between 0 and MAX(uint32).
*/
static uint32 RandItem(int unused_param);
/**
* Get a random value in a range.
* @param max The first number this function will never return (the maximum it returns is max - 1).
* @return A random value between 0 .. max - 1.
*/
static uint RandRange(uint max);
/**
* Get a random value in a range.
* @param unused_param This parameter is not used, but is needed to work with lists.
* @param max The first number this function will never return (the maximum it returns is max - 1).
* @return A random value between 0 .. max - 1.
*/
static uint RandRangeItem(int unused_param, uint max);
/**
* Returns approximately 'out' times true when called 'max' times.
* After all, it is a random function.
* @param out How many times it should return true.
* @param max Out of this many times.
* @pre \a out is at most equal to \a max.
* @return True if the chance worked out.
*/
static bool Chance(uint out, uint max);
/**
* Returns approximately 'out' times true when called 'max' times.
* After all, it is a random function.
* @param unused_param This parameter is not used, but is needed to work with lists.
* @param out How many times it should return true.
* @param max Out of this many times.
* @return True if the chance worked out.
*/
static bool ChanceItem(int unused_param, uint out, uint max);
};
#endif /* SCRIPT_BASE_HPP */
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