58 lines
1023 B
Crystal
58 lines
1023 B
Crystal
require "advent"
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INPUT = input(2022, 14).lines
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occupied = {} of Tuple(Int32, Int32) => Bool
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INPUT.each do |line|
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points = line.split("->").map &.split(",").map(&.to_i32)
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points.each_cons_pair do |p1,p2|
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x1, y1 = p1
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x2, y2 = p2
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dx = (x2-x1).sign
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dy = (y2-y1).sign
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((x2-x1).abs+1).times do |nx|
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((y2-y1).abs+1).times do |ny|
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pos = {x1 + nx*dx, y1 + ny*dy}
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occupied[pos] = true
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end
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end
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end
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end
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max_height = occupied.max_of do |k,v|
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x, y = k
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y
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end
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puts "Max height: #{max_height}"
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def each_place(pos, &block)
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x, y = pos
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yield ({x+1, y+1})
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yield ({x-1, y+1})
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yield ({x, y+1})
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end
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puts occupied
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count = 0
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overflow = false
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until overflow
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pos = {500, 0}
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moved = false
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loop do
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moved = false
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each_place(pos) do |check|
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next if occupied[check]?
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pos = check
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moved = true
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end
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overflow = true if pos[1] > max_height
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break unless moved
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break if overflow
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end
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occupied[pos] = true
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count += 1
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end
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puts count-1
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