Working on 2024/15 P2.
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@ -238,7 +238,7 @@ def part2():
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print(prepend+grid[idx][jdx], end=' ')
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else:
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if grid[idx][jdx] == '.':
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print(prepend+colored(grid[idx][jdx],'blue',attrs=["concealed"]),end='')
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print(prepend+colored(grid[idx][jdx],'blue'),end='')
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elif grid[idx][jdx] == 'O':
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print(prepend+colored(grid[idx][jdx],'red'),end='')
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elif grid[idx][jdx] == '#':
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@ -277,10 +277,7 @@ def part2():
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start = ()
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for r,row in enumerate(grid):
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for c, col in enumerate(row):
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if grid[r][c] == '@':
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start = (r,c)
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# translate arrows to something get_value_in_direction can use
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directions = {
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@ -288,28 +285,71 @@ def part2():
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'v':('down',(1, 0)),
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'>':('right',(0, 1)),
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'<':('left',(0, -1)),
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'up-left': (-1, -1),
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'up-right': (-1, 1),
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'down-left': (1, -1),
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'down-right': (1, 1),
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'up': (-1, 0),
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'down': (1, 0),
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'left': (0, -1),
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'right': (0, 1),
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}
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pos = start
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nprint(grid)
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#print(grid)
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grid = resizeGrid(grid)
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for r,row in enumerate(grid):
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for c, col in enumerate(row):
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if grid[r][c] == '@':
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start = (r,c)
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pos = start
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print()
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nprint2(grid)
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nprint2(grid,pos)
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#print(grid)
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print()
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input()
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def canBeMoved(pos,dir,boxes2move):
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if pos not in boxes2move:
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current = get_value_in_direction(grid,pos)
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print('Checking if',current,pos,'in direction',dir,'can move')
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if get_value_in_direction(grid,pos) == '#':
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return '#'
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else:
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if current in ['[',']']:
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boxes2move.append(pos)
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if current == '[':
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if dir == 'up': #left side of box
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# boxes2move += canBeMoved(addTuples(pos,directions[dir+'-right']),dir,boxes2move)
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# boxes2move += canBeMoved(addTuples(pos,directions[dir]),dir,boxes2move)
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# boxes2move += canBeMoved(addTuples(pos,directions['right']),dir,boxes2move)
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return canBeMoved(addTuples(pos,directions[dir+'-right']),dir,boxes2move) or canBeMoved(addTuples(pos,directions[dir]),dir,boxes2move) or canBeMoved(addTuples(pos,directions['right']),dir,boxes2move)
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if current == ']':
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if dir == 'up': #left side of box
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# boxes2move += canBeMoved(addTuples(pos,directions[dir+'-left']),dir,boxes2move)
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# boxes2move += canBeMoved(addTuples(pos,directions[dir]),dir,boxes2move)
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# boxes2move += canBeMoved(addTuples(pos,directions['left']),dir,boxes2move)
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return canBeMoved(addTuples(pos,directions[dir+'-left']),dir,boxes2move) or canBeMoved(addTuples(pos,directions[dir]),dir,boxes2move) or canBeMoved(addTuples(pos,directions['left']),dir,boxes2move)
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return boxes2move
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return []
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for idx, inst in enumerate(instructions):
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#print('Move',inst,'(',len(instructions)-idx,')')
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print('Move',inst,'('+str(len(instructions)-idx)+')')
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dir = directions[inst][0]
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next = get_value_in_direction(grid,pos,dir)
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# If wall, don't do anything
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if next == '#':
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#nprint(grid,pos)
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#input()
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nprint2(grid,pos)
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input()
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continue
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# If free space, move there
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@ -319,37 +359,113 @@ def part2():
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grid[pos[0]][pos[1]] = '@'
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# If box, move the box and the stack of boxes.
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if next == 'O':
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#print('@',pos)
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prev = pos
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next_chars = ['@']
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next_poss = [pos]
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skip = False
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while True:
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nextPos = addTuples(pos,directions[inst][1])
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nextChar = get_value_in_direction(grid,nextPos)
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#print(nextPos,nextChar)
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if nextChar == 'O':
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next_chars.append(nextChar)
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next_poss.append(nextPos)
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pos = nextPos
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if nextChar == '.':
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next_chars.append(nextChar)
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next_poss.append(nextPos)
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break
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if nextChar == '#':
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skip = True
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pos = prev
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break
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if next in ['[',']']: #part 2, also check the sides, if theres a full box [] move the whole box
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#input()
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if not skip:
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for ndx,n in enumerate(next_poss):
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if ndx == 0:
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grid[n[0]][n[1]] = '.'
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pos = next_poss[ndx+1]
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else:
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grid[n[0]][n[1]] = next_chars[ndx-1]
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if inst in ['<','>']:
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#print('@',pos)
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prev = pos
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next_chars = ['@']
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next_poss = [pos]
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skip = False
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while True:
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nextPos = addTuples(pos,directions[inst][1])
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nextChar = get_value_in_direction(grid,nextPos)
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#print(nextPos,nextChar)
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if nextChar in ['[',']']:
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next_chars.append(nextChar)
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next_poss.append(nextPos)
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pos = nextPos
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if nextChar == '.':
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next_chars.append(nextChar)
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next_poss.append(nextPos)
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break
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if nextChar == '#':
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skip = True
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pos = prev
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break
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#input()
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if not skip:
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for ndx,n in enumerate(next_poss):
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if ndx == 0:
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grid[n[0]][n[1]] = '.'
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pos = next_poss[ndx+1]
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else:
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grid[n[0]][n[1]] = next_chars[ndx-1]
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else:
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if dir == 'up': #Up works. Need to implement down too.
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boxes2move = [] #list of boxes (set coords) to move
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print('next is',next,'im at',pos)
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# boxes2move += canBeMoved(addTuples(pos,directions[inst][1]),dir,boxes2move)
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boxes2move.append(canBeMoved(addTuples(pos,directions[inst][1]),dir,boxes2move))
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if next == '[':
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# boxes2move += canBeMoved(addTuples(pos,directions[dir+'-right']),dir,boxes2move)
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boxes2move.append(canBeMoved(addTuples(pos,directions[dir+'-right']),dir,boxes2move))
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if next == ']':
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# boxes2move += canBeMoved(addTuples(pos,directions[dir+'-left']),dir,boxes2move)
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boxes2move.append(canBeMoved(addTuples(pos,directions[dir+'-left']),dir,boxes2move))
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# boxes2move += canBeMoved(addTuples(pos,directions[inst][1]),dir,boxes2move)
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boxes2move.append(canBeMoved(addTuples(pos,directions[inst][1]),dir,boxes2move))
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#boxes2move = list(set(boxes2move))
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if '#' in boxes2move:
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continue
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boxes2move = [i for i in boxes2move if i is not None]
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boxes2move = sorted(boxes2move)
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print(boxes2move)
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prevValues = {}
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newValues = {}
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for b in boxes2move:
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prevValues[b] = grid[b[0]][b[1]]
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print(prevValues)
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for b in boxes2move:
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tmp = addTuples(b,directions[inst][1])
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grid[b[0]][b[1]] = '.'
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grid[tmp[0]][tmp[1]] = prevValues[b]
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#nprint2(grid,pos)
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#input()
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grid[pos[0]][pos[1]] = '.'
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pos = addTuples(pos,directions[inst][1])
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grid[pos[0]][pos[1]] = '@'
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# print('@',pos)
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# prev = pos
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# next_chars = ['@']
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# next_poss = [pos]
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# skip = False
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# while True:
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# nextPos = addTuples(pos,directions[inst][1])
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# nextChar = get_value_in_direction(grid,nextPos)
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# print(nextPos,nextChar)
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# if nextChar == '[' or nextChar == ']':
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# next_chars.append(nextChar)
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# next_poss.append(nextPos)
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# pos = nextPos
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# if nextChar == '.':
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# next_chars.append(nextChar)
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# next_poss.append(nextPos)
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# break
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# if nextChar == '#':
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# skip = True
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# pos = prev
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# break
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# if not skip:
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# for ndx,n in enumerate(next_poss):
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# if ndx == 0:
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# grid[n[0]][n[1]] = '.'
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# pos = next_poss[ndx+1]
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# else:
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# grid[n[0]][n[1]] = next_chars[ndx-1]
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nprint2(grid,pos)
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input()
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start_time = time.time()
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print('Part 2:',part2(), '\t\t', round((time.time() - start_time)*1000), 'ms')
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