Add pred path

euler-golf/js/game.js

@@ -2,7 +2,7 @@ const DEFAULTS = {
   max_rows: 80,
   max_cols: 80,
   min_gap: 40,
-  angle_multiplier: 0.0005,
+  angle_multiplier: 10e-4,
 };
 const CANVAS = document.getElementById("canvas");
 
@@ -137,7 +137,7 @@ const handle_input = (state, dt) => {
 
 const render = ({ width, height, ctx, rows, cols } = state) => {
   ctx.clearRect(0, 0, width, height);
-  ctx.fillStyle = "rgba(255, 255, 255, 0)";
+  ctx.fillStyle = "rgba(0, 0, 0, 0)";
   ctx.fillRect(0, 0, width, height);
 
   const grid_spec = calculate_grid_spec(state);
@@ -156,11 +156,25 @@ const render = ({ width, height, ctx, rows, cols } = state) => {
     complex_to_grid(cx.add(new cx(angle_re, angle_im), prev), rows, cols),
   ]);
 
+  ctx.line(
+    grid_to_canvas(complex_to_grid(curr, rows, cols), grid_spec),
+    grid_to_canvas(
+      complex_to_grid(
+        move(prev, curr, new cx(0, state.angle.im < 0 ? -1 : 1)),
+        rows,
+        cols
+      ),
+      grid_spec
+    ),
+    6,
+    "#aaa"
+  );
+
   ctx.cartesian_grid(rows, cols, grid_spec, (x, y) => {
     if (x == Math.floor(cols / 2) && y == Math.floor(rows / 2)) {
       return {
         radius: 7,
-        color: "#0000ff",
+        color: "#2f9c94",
       };
     } else {
       return {

euler-golf/js/json-ds.js

@@ -1,5 +1,6 @@
 class JSONSet {
   items = new Set();
+
   constructor(initial) {
     if (Array.isArray(initial)) {
       initial.map((x) => this.apply_set_function("add", x));
@@ -11,6 +12,7 @@ class JSONSet {
       (f_name) => (this[f_name] = (x) => this.apply_set_function(f_name, x))
     );
   }
+
   apply_set_function(f_name, x) {
     return this.items[f_name](JSON.stringify(x));
   }

euler-golf/js/sol.js

@@ -1,4 +1,4 @@
-const DEPTH = 21;
+const DEPTH = 22;
 
 const DIRECTION = {
   0: new cx(0, 1),