🔨 rename package compute -> solver

packages/solver/getBestRoute.ts

@@ -0,0 +1,28 @@
+import { copyGrid } from "@snk/types/grid";
+import { createOutside } from "./outside";
+import { clearResidualColoredLayer } from "./clearResidualColoredLayer";
+import { clearCleanColoredLayer } from "./clearCleanColoredLayer";
+import type { Color, Grid } from "@snk/types/grid";
+import type { Snake } from "@snk/types/snake";
+
+export const getBestRoute = (grid0: Grid, snake0: Snake) => {
+  const grid = copyGrid(grid0);
+  const outside = createOutside(grid);
+  const chain: Snake[] = [snake0];
+
+  for (const color of extractColors(grid)) {
+    if (color > 1)
+      chain.unshift(
+        ...clearResidualColoredLayer(grid, outside, chain[0], color)
+      );
+    chain.unshift(...clearCleanColoredLayer(grid, outside, chain[0], color));
+  }
+
+  return chain.reverse();
+};
+
+const extractColors = (grid: Grid): Color[] => {
+  // @ts-ignore
+  let maxColor = Math.max(...grid.data);
+  return Array.from({ length: maxColor }, (_, i) => (i + 1) as Color);
+};