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//
// FissionGame.m
// Gridlock
//
// Created by Brian on Sat Nov 22 2003.
// Copyright (c) 2003 __MyCompanyName__. All rights reserved.
//
#import "FissionGame.h"
#import "AnyDirectionUntilBlockedMoveRule.h"
@implementation FissionGame
-(void)reset {
[super reset];
[self createGridFromConfiguration];
if ([[self configurationInfo] objectForKey:@"randomCells"]) {
int ncells = [[[self configurationInfo] objectForKey:@"randomCells"] intValue];
int p;
for(p=1; p<=[self numberOfPlayers]; p++) {
[self fillRandomEmptyCellsWithValue:p count:ncells];
}
}
[self setCurrentPlayerNumber:1];
}
-(BOOL)prepareMoveSequence:(NSArray *)positions {
id pos0 = [positions objectAtIndex:0];
id pos1 = [positions objectAtIndex:1];
// get direction of move so we can tell if it ended by hitting an edge or another piece
int dr = ([pos1 row]>[pos0 row]) ? 1 : (([pos1 row]<[pos0 row]) ? -1 : 0);
int dc = ([pos1 column]>[pos0 column]) ? 1 : (([pos1 column]<[pos0 column]) ? -1 : 0);
[self resetFutureGrid];
[[self futureGrid] setValue:0 atPosition:pos0];
// detonate if we hit a piece and not an edge
if ([self isValidRow:[pos1 row]+dr column:[pos1 column]+dc]) {
[[self futureGrid] setValue:0 atPositions:[[self futureGrid] neighborsOfPosition:pos1 distance:1]];
}
else {
[[self futureGrid] setValue:[self currentPlayerNumber] atPosition:pos1];
}
return YES;
}
-(BOOL)isSuicideVariation {
return ([[self configurationInfo] objectForKey:@"suicide"]!=nil);
}
-(int)winningPlayer {
int n1 = [[self grid] numberOfCellsWithValue:1];
int n2 = [[self grid] numberOfCellsWithValue:2];
if (n1>0 && n2==0) return ([self isSuicideVariation]) ? 2 : 1;
if (n2>0 && n1==0) return ([self isSuicideVariation]) ? 1 : 2;
// either both have no pieces, are tied at 1, or current player has no move
return 0;
}
-(BOOL)isGameOver {
// game over if either player has no pieces, or both have exactly 1, or current player can't move
int n1 = [[self grid] numberOfCellsWithValue:1];
int n2 = [[self grid] numberOfCellsWithValue:2];
return (n1==0 || n2==0 || (n1==1 && n2==1) || ![AnyDirectionUntilBlockedMoveRule gameHasAnyMoves:self]);
}
-(NSArray *)allValidMoveSequences {
return [AnyDirectionUntilBlockedMoveRule allValidMoveSequences:self];
}
-(BOOL)showScores {
return YES;
}
@end
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