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//
// $Id: OPatrolTo.m,v 1.1 1997/10/28 05:11:37 nygard Exp $
//
//
// This file is a part of Empire, a game of exploration and conquest.
// Copyright (C) 1996 Steve Nygard
//
// 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; either version 2 of the License, or
// (at your option) any later version.
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// You may contact the author by:
// e-mail: nygard@telusplanet.net
//
#import "Empire.h"
RCSID ("$Id: OPatrolTo.m,v 1.1 1997/10/28 05:11:37 nygard Exp $");
#import "OPatrolTo.h"
#import "Map.h"
#import "MapView.h"
#import "OMoveTo.h"
#import "OShortestMoveTo.h"
#import "PathSegment.h"
#import "Unit.h"
//======================================================================
//
// This order patrols a unit between two locations. It uses the
// shortest path move to order to handle the movement in each direction.
//
//======================================================================
#define OPatrolTo_VERSION 1
@implementation OPatrolTo
+ (void) initialize
{
if (self == [OPatrolTo class])
{
[self setVersion:OPatrolTo_VERSION];
}
}
//----------------------------------------------------------------------
- initForUnit:(Unit *)aUnit patrolFromLocation:(EMMapLocation)sourceLocation toLocation:(EMMapLocation)destinationLocation
onMap:(Map *)aMap
{
[super initForUnit:aUnit];
source = sourceLocation;
destination = destinationLocation;
map = aMap;
subOrder = [[[OShortestMoveTo alloc] initForUnit:aUnit moveToLocation:destination onMap:map] retain];
returning = NO;
return self;
}
//----------------------------------------------------------------------
- (void) dealloc
{
SNRelease (subOrder);
[super dealloc];
}
//----------------------------------------------------------------------
- (NSString *) orderText
{
if (returning == YES)
return [NSString stringWithFormat:@"Patrol to %d,%d", source.row, source.column];
else
return [NSString stringWithFormat:@"Patrol to %d,%d", destination.row, destination.column];
}
//----------------------------------------------------------------------
- (Direction) nextMove
{
Direction dir;
dir = [subOrder nextMove];
return dir;
}
//----------------------------------------------------------------------
- (BOOL) isOrderComplete
{
if ([subOrder isOrderComplete] == YES)
{
SNRelease (subOrder);
if (returning == YES)
{
subOrder = [[OShortestMoveTo alloc] initForUnit:unit moveToLocation:destination onMap:map];
returning = NO;
}
else
{
subOrder = [[OShortestMoveTo alloc] initForUnit:unit moveToLocation:source onMap:map];
returning = YES;
}
}
return NO;
}
//----------------------------------------------------------------------
- (PathSegment *) pathInMapView:(MapView *)mapView
{
return [[PathSegment alloc] initPathFromLocation:source toLocation:destination in:mapView];
}
//----------------------------------------------------------------------
- (void) unblocked
{
[subOrder unblocked];
}
//----------------------------------------------------------------------
- (BOOL) wasBlocked
{
return [subOrder wasBlocked];
}
//----------------------------------------------------------------------
- (BOOL) isSentried
{
return [subOrder isSentried];
}
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.