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// ____ _ __
// / __ )____ _____ | | / /___ ___________
// / __ / __ \/ ___/ | | /| / / __ `/ ___/ ___/
// / /_/ / /_/ (__ ) | |/ |/ / /_/ / / (__ )
// /_____/\____/____/ |__/|__/\__,_/_/ /____/
//
// A futuristic real-time strategy game.
// This file is part of Bos Wars.
//
/**@name action_patrol.cpp - The patrol action. */
//
// (c) Copyright 1998-2007 by Lutz Sammer and Jimmy Salmon
//
// This program 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; only version 2 of the License.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
//@{
/*----------------------------------------------------------------------------
-- Includes
----------------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include "stratagus.h"
#include "unit.h"
#include "unittype.h"
#include "actions.h"
#include "pathfinder.h"
#include "map.h"
/*----------------------------------------------------------------------------
-- Functions
----------------------------------------------------------------------------*/
extern bool AutoRepair(CUnit *unit);
/**
** Swap the patrol points.
*/
static void SwapPatrolPoints(CUnit *unit)
{
int tmp;
tmp = unit->Orders[0]->Arg1.Patrol.X;
unit->Orders[0]->Arg1.Patrol.X = unit->Orders[0]->X;
unit->Orders[0]->X = tmp;
tmp = unit->Orders[0]->Arg1.Patrol.Y;
unit->Orders[0]->Arg1.Patrol.Y = unit->Orders[0]->Y;
unit->Orders[0]->Y = tmp;
NewResetPath(unit);
}
/**
** Unit Patrol:
** The unit patrols between two points.
** Any enemy unit in reaction range is attacked.
** @todo FIXME:
** Should do some tries to reach the end-points.
** Should support patrol between more points!
** Patrol between units.
**
** @param unit Patroling unit pointer.
*/
void HandleActionPatrol(CUnit *unit)
{
if (unit->Wait) {
unit->Wait--;
return;
}
if (!unit->SubAction) { // first entry.
NewResetPath(unit);
unit->SubAction = 1;
}
switch (DoActionMove(unit)) {
case PF_FAILED:
unit->SubAction = 1;
break;
case PF_UNREACHABLE:
// Increase range and try again
unit->SubAction = 1;
if (unit->Orders[0]->Range <= Map.Info.MapWidth ||
unit->Orders[0]->Range <= Map.Info.MapHeight) {
unit->Orders[0]->Range++;
break;
}
// FALL THROUGH
case PF_REACHED:
unit->SubAction = 1;
unit->Orders[0]->Range = 0;
SwapPatrolPoints(unit);
break;
case PF_WAIT:
// Wait for a while then give up
unit->SubAction++;
if (unit->SubAction == 5) {
unit->SubAction = 1;
unit->Orders[0]->Range = 0;
SwapPatrolPoints(unit);
}
break;
default: // moving
unit->SubAction = 1;
break;
}
if (!unit->Anim.Unbreakable) {
//
// Attack any enemy in reaction range.
// If don't set the goal, the unit can then choose a
// better goal if moving nearer to enemy.
//
if (unit->Type->CanAttack) {
const CUnit *goal = AttackUnitsInReactRange(unit);
if (goal) {
DebugPrint("Patrol attack %d\n" _C_ UnitNumber(goal));
CommandAttack(unit, goal->X, goal->Y, NULL, FlushCommands);
// Save current command to come back.
unit->SavedOrder = *unit->Orders[0];
unit->ClearAction();
unit->Orders[0]->Goal = NoUnitP;
return;
}
}
// Look for something to auto repair
if (AutoRepair(unit)) {
return;
}
}
}
//@}
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