def fetch_match(request):
context = RequestContext(request)
matchid = request.GET['matchid']
movecnt = request.GET['movecnt']
switchflag = request.GET['switchflag']
match = Match.objects.get(id=matchid)
if(match == None):
data = "§§"
else:
lastmove = Move.objects.filter(match_id=match.id).order_by("count").last()
if(lastmove != None):
movesrc = Match.index_to_koord(lastmove.srcx, lastmove.srcy)
movedst = Match.index_to_koord(lastmove.dstx, lastmove.dsty)
if(int(movecnt) == match.count):
data = "§"
else:
data = html_board(match, int(switchflag), movesrc, movedst) + "§" + html_moves(match)
thread = Match.get_active_thread(match)
if(thread and not thread.candidate_srcx):
data += "§<p>thread found with matchid: " + str(thread.match.id) + "</p>"
elif(thread and thread.candidate_srcx):
data += "§<p>move candidate: "
data += Match.index_to_koord(thread.candidate_srcx, thread.candidate_srcy) + "-" + Match.index_to_koord(thread.candidate_dstx, thread.candidate_dsty)
data += "</p>"
else:
data += "§"
return HttpResponse(data)
def calc_min(match, maxdepth, depth, alpha, beta):
generator = Generator()
generator.match = match
gmove = None
color = match.next_color()
newscore = None
minscore = 200000
oldscore = 0
count = 0
while(generator.active):
flag, newgmove = generator.generate_move()
if(flag):
count += 1
oldscore = match.score
move = match.do_move(newgmove.srcx, newgmove.srcy, newgmove.dstx, newgmove.dsty, newgmove.prom_piece)
match.move_list.append(move)
if(depth == 1):
msg = "\nmatch.id:" + str(match.id) + " calculate "
prnt_move(msg, newgmove)
if(gmove):
prnt_move(" CANDIDATE ", gmove)
print(" score: " + str(newscore))
thread = Match.get_active_thread(match)
if(thread and newscore):
thread.populate_candiate(gmove)
if(depth <= maxdepth):
newscore = calc_max(match, maxdepth, depth + 1, alpha, minscore)[0]
elif(depth <= maxdepth + 2):
if(match.next_color() == Match.COLORS['white']):
wkg_attacked = rules.attacked(match, match.wKg_x, match.wKg_y, Match.COLORS['black'])
white_promotion = match.readfield(newgmove.dstx, newgmove.dsty) == Match.PIECES['wPw'] and newgmove.dsty >= 6
if(oldscore != match.score or wkg_attacked or white_promotion ):
newscore = calc_max(match, maxdepth, depth + 1, alpha, minscore)[0]
else:
newscore = match.score + calc_helper.evaluate_position(match)
else:
bkg_attacked = rules.attacked(match, match.bKg_x, match.bKg_y, Match.COLORS['white'])
black_promotion = match.readfield(newgmove.dstx, newgmove.dsty) == Match.PIECES['bPw'] and newgmove.dsty <= 1
if(oldscore != match.score or bkg_attacked or black_promotion):
newscore = calc_max(match, maxdepth, depth + 1, alpha, minscore)[0]
else:
newscore = match.score + calc_helper.evaluate_position(match)
elif(depth <= maxdepth + 4 and oldscore != match.score):
newscore = calc_max(match, maxdepth, depth + 1, alpha, minscore)[0]
else:
newscore = match.score + calc_helper.evaluate_position(match)
newscore, gmove = rate(color, gmove, newgmove, minscore, newscore)
match.undo_move(True)
if(newscore < minscore):
minscore = newscore
if(minscore <= alpha):
break
else:
if(count == 0):
status = rules.game_status(match)
if(status == Match.STATUS['winner_black']):
newscore = Match.SCORES[Match.PIECES['wKg']]
elif(status == Match.STATUS['winner_white']):
newscore = Match.SCORES[Match.PIECES['bKg']]
elif(status == Match.STATUS['draw']):
newscore = Match.SCORES[Match.PIECES['blk']]
else:
newscore = match.score
if(depth == 1):
msg = "\nmatch.id:" + str(match.id) + " CANDIDATE "
prnt_move(msg, gmove)
print(" score: " + str(newscore))
thread = Match.get_active_thread(match)
if(thread):
thread.populate_candiate(gmove)
return newscore, gmove
return minscore, gmove
