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//
// AmbivalanceGame.m
// Gridlock
//
// Created by Brian on 3/26/05.
// Copyright 2005 __MyCompanyName__. All rights reserved.
//
#import "AmbivalenceGame.h"
@implementation AmbivalenceGame
-(void)reset {
[super reset];
[super createGridFromConfiguration];
}
-(NSArray *)allValidMoveSequences {
return [[[self grid] allPositionsWithValue:0] valuesByObjectsPerformingSelector:@selector(arrayWithSelf_)];
}
-(BOOL)prepareMoveSequence:(NSArray *)positions {
if ([positions count]!=1) return NO;
[self resetFutureGrid];
DCHypergridPosition *pos = [positions lastObject];
int r = [pos row];
int c = [pos column];
int pnum = [self currentPlayerNumber];
int oppnum = [self nextPlayerNumber];
[[self futureGrid] setValue:pnum atPosition:pos];
int dr,dc;
for(dr=-1; dr<=+1; dr++) {
for(dc=-1; dc<=+1; dc++) {
if (dr!=0 || dc!=0) {
if ([self isValidRow:r+dr column:c+dc] && [self valueAtRow:r+dr column:c+dc]==oppnum) {
// check for "intrusion" capture, coming in between two opponents kills them both
// then check for "custodian" capture, trapping an enemy between two allies kills it
if ([self isValidRow:r-dr column:c-dc] && [self valueAtRow:r-dr column:c-dc]==oppnum) {
// actually these will get set twice when we check the opposite direction, but that's ok
[[self futureGrid] setValue:-1 atPosition:[DCHypergridPosition positionWithRow:r+dr column:c+dc]];
[[self futureGrid] setValue:-1 atPosition:[DCHypergridPosition positionWithRow:r-dr column:c-dc]];
}
else if ([self isValidRow:r+2*dr column:c+2*dc] && [self valueAtRow:r+2*dr column:c+2*dc]==pnum) {
[[self futureGrid] setValue:-1 atPosition:[DCHypergridPosition positionWithRow:r+dr column:c+dc]];
}
}
}
}
}
return YES;
}
-(BOOL)isGameOver {
return !([[self grid] hasCellWithValue:0]);
}
-(BOOL)showScores {
return YES;
}
@end
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