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//
// DaggerAI.m
// Gridlock
//
// Created by Brian on Sun Feb 29 2004.
// Copyright (c) 2004 __MyCompanyName__. All rights reserved.
//
#import "DaggerAI.h"
#import "DaggerGame.h"
@implementation DaggerAI
-(id)init {
self = [super init];
p1DaggerWeight = 20;
p2DaggerWeight = 30;
crownPositionWeight = 5;
return self;
}
-(int)utilityForGame:(DaggerGame *)game player:(int)pnum {
int daggerWeight = (pnum==1) ? p1DaggerWeight : p2DaggerWeight;
int baserow = (pnum==1) ? 0 : [game numberOfRows]-1;
int utility = daggerWeight*[game numberOfDaggersForPlayer:pnum];
NSEnumerator *ce = [[game grid] enumeratorForPositionsWithValue:-pnum];
id crownPos;
while (crownPos=[ce nextObject]) {
utility += crownPositionWeight * abs([crownPos row]-baserow);
}
return utility;
}
-(int)relativeUtilityForGame:(Game *)game player:(int)pnum {
return [self utilityForGame:game player:pnum] - [self utilityForGame:game player:[game playerNumberMovingAfterPlayer:pnum]];
}
@end
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