Returns path in wrong direction#6

While defined as `func Path(from, to Pather) ...`, the resulting path actually starts at `to` node and ends at `from`. This can be seen using this patch to `pather_test.go`: ```diff diff --git pather_test.go pather_test.go index b9d78bd..331ee0d 100644 --- pather_test.go +++ pather_test.go @@ -159,18 +159,19 @@ func (w World) RenderPath(path []Pather) string { return "" } height := len(w[0]) - pathLocs := map[string]bool{} - for _, p := range path { + pathLocs := map[string]rune{} + for i, p := range path { pT := p.(*Tile) - pathLocs[fmt.Sprintf("%d,%d", pT.X, pT.Y)] = true + nr := []rune("0123456789abc")[i%12] // "clever" rendering of node index in path. + pathLocs[fmt.Sprintf("%d,%d", pT.X, pT.Y)] = nr } rows := make([]string, height) for x := 0; x < width; x++ { for y := 0; y < height; y++ { t := w.Tile(x, y) r := ' ' - if pathLocs[fmt.Sprintf("%d,%d", x, y)] { - r = KindRunes[KindPath] + if nr := pathLocs[fmt.Sprintf("%d,%d", x, y)]; nr != 0 { + r = nr } else if t != nil { r = KindRunes[t.Kind] } ``` which renders `0` on `T` and `9` on `F`: ``` === RUN TestStraightLine path_test.go:14: Input world .....~...... .....MM..... .F........T. ....MMM..... ............ path_test.go:19: Resulting path .....~...... .....MM..... .9876543210. ....MMM..... ............ --- PASS: TestStraightLine (0.01s) ```