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45 lines
740 B
Go
45 lines
740 B
Go
package two
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import (
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"strings"
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log "github.com/sirupsen/logrus"
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)
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type graph struct {
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robot point
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data []string
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}
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func newGraph() *graph {
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return &graph{}
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}
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func (g *graph) String() string {
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return strings.Join(g.data, "\n")
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}
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func (g *graph) valueAt(p point) rune {
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return rune(g.data[p.y][p.x])
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}
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func (g *graph) updateRobot(dir direction) {
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new := neighbours(g.robot)[dir]
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log.Debugf("new robot point: %v", new)
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g.updateEach(g.robot, '.')
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g.updateEach(new, '@')
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g.robot = new
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}
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func (g *graph) updateBox(p point, dir direction) {
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new := neighbours(p)[dir]
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g.updateEach(new, g.valueAt(p))
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g.updateEach(p, '.')
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}
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func (g *graph) updateEach(p point, r rune) {
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g.data[p.y] = replaceAtIndex(g.data[p.y], r, p.x)
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}
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