85 lines
1.4 KiB
Go
85 lines
1.4 KiB
Go
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package part2
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import (
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"git.tristans.cloud/tristan/aoc/2023/10/part1/lib"
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"fmt"
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)
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type Loop map[[2]int]bool
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func GetLoop(pipeMap []string) ( loop Loop ) {
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x,y := part1.FindStart(pipeMap)
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loop = Loop{{x,y}: true}
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side,x,y := part1.FindFirst(pipeMap, x,y)
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for pipeMap[y][x] != 'S' {
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loop[[2]int{x,y}] = true
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side,x,y = part1.FindNext(pipeMap, side, x,y)
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}
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return
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}
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func GetShapeOfS(pipeMap []string) () {
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return
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}
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const CLEAR = "\u001b[0;0m";
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const OUT_OF_LOOP = CLEAR;
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const ON_LOOP = "\u001b[0;31m";
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const IN_LOOP = "\u001b[0;33m";
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func GetVolume(pipeMap []string) int {
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loop := GetLoop(pipeMap)
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count := 0
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for y,line := range pipeMap {
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inLoop := false
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onDownEdge := false
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onUpEdge := false
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for x,c := range line {
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_,onLoop := loop[[2]int{x,y}]
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if onLoop {
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switch c {
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case '|':
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inLoop = !inLoop
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case 'L':
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onDownEdge = true
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case 'F':
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onUpEdge = true
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case '7':
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if onDownEdge {
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onDownEdge = false
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inLoop = !inLoop
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} else if onUpEdge {
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onUpEdge = false
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}
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case 'J':
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if onUpEdge {
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onUpEdge = false
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inLoop = !inLoop
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} else if onDownEdge {
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onDownEdge = false
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}
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}
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}
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color := OUT_OF_LOOP
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if onLoop {
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color = ON_LOOP
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}
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if inLoop && !onLoop {
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count++
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color = IN_LOOP
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}
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if c == 'S' {
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color = "\u001b[41;30m"
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}
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fmt.Printf("%v%c", color, c)
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}
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println(CLEAR)
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}
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return count
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}
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