fix #13 (#14)

Author: alqubo

src/main.ts

@@ -1,2 +1,3 @@
 export * from "./objects/grid.ts";
 export * from "./finders/finder.enum.ts";
+export { transpose } from "./utils/grid.utils.ts";

src/sandbox.ts

@@ -1,21 +1,25 @@
 import { Grid } from "./objects/grid.ts";
 import { FinderEnum } from "./finders/finder.enum.ts";
-import { drawLayout } from "./utils/grid.utils.ts";
+import { drawLayout, transpose } from "./utils/grid.utils.ts";
 
-const layout = [
-  [1, 1, 1, 1, null],
-  [1, null, null, 1, 1, 1, 1],
-  [1, null, 1, 1, 1],
-  [1, null, 1, 1, 1, 1, 1, 1],
-  [1, null, 1, 1, 1, 1, 1, 1],
-] as number[][];
+const original = [
+  [0, 0, 0, 2, 0, 0, 0, 0, 0],
+  [0, 0, 1, 1, 1, 1, 0, 1, 1],
+  [0, 1, 1, 1, 1, 1, 1, 1, 1],
+  [0, 1, 1, 1, 1, 1, 1, 1, 1],
+  [2, 1, 1, 1, 1, 1],
+  [0, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [0, 1, 1, 1, 1, 1, 1, 0, 1, 1],
+];
+
+const layout = transpose(original); // (original);
 
 const grid = new Grid(layout);
-const start = { x: 6, y: 3 };
-const end = { x: 6, y: 1 };
+const start = { x: 2, y: 6 };
+const end = { x: 5, y: 9 };
 
 console.log(start, "->", end);
 const path = grid.findPath(start, end, 1, FinderEnum.JUMP_POINT);
 console.log(path);
 
-drawLayout(layout, path);
+drawLayout(layout, path, start, end);

src/utils/grid.utils.ts

@@ -15,13 +15,36 @@ export const makeSquare = (layout: number[][]): number[][] => {
   return squareLayout;
 };
 
-export const drawLayout = (layout: number[][], path: PointInterface[]) => {
+export const drawLayout = (
+  layout: number[][],
+  path: PointInterface[],
+  start?: PointInterface,
+  end?: PointInterface,
+) => {
   const map: any[] = layout.map((row) => row.map((cell) => (cell ? "." : "#")));
 
   path.forEach((point) => {
     map[point.y][point.x] = "P";
   });
 
+  if (start) map[start.y][start.x] = "S";
+  if (end) map[end.y][end.x] = "X";
+
   const mapString = map.map((row) => row.join(" ")).join("\n");
   console.log(mapString);
 };
+
+export const transpose = (matrix: number[][]) => {
+  const maxCols = Math.max(...matrix.map((row) => row.length));
+  const transposed: number[][] = Array.from({ length: maxCols }, () =>
+    Array(matrix.length).fill(null),
+  );
+
+  for (let i = 0; i < matrix.length; i++) {
+    for (let j = 0; j < matrix[i].length; j++) {
+      transposed[j][i] = matrix[i][j];
+    }
+  }
+
+  return transposed;
+};