src/common/weapons/WeaponVelocity.cpp

   1 ////////////////////////////////////////////////////////////////////////////////
   2 //    Scorched3D (c) 2000-2009
   3 //
   4 //    This file is part of Scorched3D.
   5 //
   6 //    Scorched3D is free software; you can redistribute it and/or modify
   7 //    it under the terms of the GNU General Public License as published by
   8 //    the Free Software Foundation; either version 2 of the License, or
   9 //    (at your option) any later version.
  10 //
  11 //    Scorched3D is distributed in the hope that it will be useful,
  12 //    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //    GNU General Public License for more details.
  15 //
  16 //    You should have received a copy of the GNU General Public License
  17 //    along with Scorched3D; if not, write to the Free Software
  18 //    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 ////////////////////////////////////////////////////////////////////////////////
  20
  21 #include <weapons/WeaponVelocity.h>
  22 #include <weapons/AccessoryStore.h>
  23
  24 REGISTER_ACCESSORY_SOURCE(WeaponVelocity);
  25
  26 WeaponVelocity::WeaponVelocity() :
  27         velocityChange_(0), abs_(false)
  28 {
  29
  30 }
  31
  32 WeaponVelocity::~WeaponVelocity()
  33 {
  34
  35 }
  36
  37 bool WeaponVelocity::parseXML(AccessoryCreateContext &context, XMLNode *accessoryNode)
  38 {
  39         if (!Weapon::parseXML(context, accessoryNode)) return false;
  40
  41         // Get the next weapon
  42         XMLNode *subNode = 0;
  43         if (!accessoryNode->getNamedChild("aimedweapon", subNode)) return false;
  44
  45         // Check next weapon is correct type
  46         AccessoryPart *accessory = context.getAccessoryStore().
  47                 createAccessoryPart(context, parent_, subNode);
  48         if (!accessory || accessory->getType() != AccessoryPart::AccessoryWeapon)
  49         {
  50                 return subNode->returnError("Failed to find sub weapon, not a weapon");
  51         }
  52         aimedWeapon_ = (Weapon*) accessory;
  53
  54         if (!accessoryNode->getNamedChild("velocitychange", velocityChange_)) return false;
  55
  56         accessoryNode->getNamedChild("abs", abs_, false);
  57
  58         return true;
  59 }
  60
  61 void WeaponVelocity::fireWeapon(ScorchedContext &context,
  62         WeaponFireContext &weaponContext, FixedVector &position, FixedVector &velocity)
  63 {
  64         // Add a shot that will fall where the original was aimed
  65         // but with altered velocity
  66         FixedVector newVelocity;
  67         if (abs_)
  68         {
  69                 newVelocity = velocity.Normalize() * 50 * velocityChange_.getValue(context);
  70                 aimedWeapon_->fireWeapon(context, weaponContext, position, newVelocity);
  71         }
  72         else
  73         {
  74
  75                 newVelocity = velocity * velocityChange_.getValue(context);
  76                 aimedWeapon_->fireWeapon(context, weaponContext, position, newVelocity);
  77         }
  78
  79 }
  80