Display scores and walls in sim

src/algorithm.zig

@@ -68,6 +68,10 @@ const Node = struct {
                 node.updateScore(self.score + 1);
             }
         }
+
+        if (!is_robot) {
+            robot.writeCellScore(self.p, self.score);
+        }
     }
 };
 
@@ -145,6 +149,10 @@ pub fn setWall(p: Point, direction: Cardinal, value: bool) void {
     }
     // assert(!(isEdge(p, direction) and !value));
 
+    if (!is_robot and value) {
+        robot.showWall(p, direction);
+    }
+
     if (isEdge(p, direction)) {
         return;
     }

src/simulated-bot.zig

@@ -2,6 +2,8 @@ const std = @import("std");
 const assert = std.debug.assert;
 
 const map = @import("map.zig");
+const Point = map.Point;
+const Cardinal = map.Cardinal;
 
 const stdin = std.io.getStdIn().reader();
 const stdout = std.io.getStdOut().writer();
@@ -82,3 +84,17 @@ pub fn readBack() bool {
     // What?
     std.debug.panic();
 }
+
+pub fn showWall(p: Point, direction: Cardinal) void {
+    const dir :u8 = switch (direction) {
+        .north => 'n',
+        .south => 's',
+        .east => 'e',
+        .west => 'w',
+    };
+    stdout.print("setWall {d} {d} {c}\n", .{ p.x, p.y, dir }) catch unreachable;
+}
+
+pub fn writeCellScore(p: Point, score: usize) void {
+    stdout.print("setText {d} {d} {d}\n", .{p.x, p.y, score}) catch unreachable;
+}