src/script/api/script_base.cpp

   1 /*
   2  * This file is part of OpenTTD.
   3  * 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.
   4  * 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.
   5  * 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/>.
   6  */
   7
   8 /** @file script_base.cpp Implementation of ScriptBase. */
   9
  10 #include "../../stdafx.h"
  11 #include "script_base.hpp"
  12 #include "script_error.hpp"
  13
  14 #include "../../safeguards.h"
  15
  16 /* static */ SQInteger ScriptBase::Rand()
  17 {
  18         return ScriptObject::GetRandomizer().Next();
  19 }
  20
  21 /* static */ SQInteger ScriptBase::RandItem(SQInteger)
  22 {
  23         return ScriptBase::Rand();
  24 }
  25
  26 /* static */ SQInteger ScriptBase::RandRange(SQInteger max)
  27 {
  28         max = Clamp<SQInteger>(max, 0, UINT32_MAX);
  29         return ScriptObject::GetRandomizer().Next(max);
  30 }
  31
  32 /* static */ SQInteger ScriptBase::RandRangeItem(SQInteger, SQInteger max)
  33 {
  34         return ScriptBase::RandRange(max);
  35 }
  36
  37 /* static */ bool ScriptBase::Chance(SQInteger out, SQInteger max)
  38 {
  39         out = Clamp<SQInteger>(out, 0, UINT32_MAX);
  40         max = Clamp<SQInteger>(max, 0, UINT32_MAX);
  41         EnforcePrecondition(false, out <= max);
  42         return ScriptBase::RandRange(max) < out;
  43 }
  44
  45 /* static */ bool ScriptBase::ChanceItem(SQInteger, SQInteger out, SQInteger max)
  46 {
  47         return ScriptBase::Chance(out, max);
  48 }