From 737ae965d03aeb55d181bd2f00155e99840110cd Mon Sep 17 00:00:00 2001
From: Thomas Lindner <tom@dl6tom.de>
Date: Sat, 21 May 2022 10:56:12 +0200
Subject: [PATCH] hardcode field size ;)

---
 src/main.cc | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/src/main.cc b/src/main.cc
index 4d62a63..261ab5b 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -55,6 +55,7 @@ class Bot {
   int x, y;
   bool up, right, down, left;
   std::map<std::pair<int, int>, unsigned> known_map;
+  int field_width, field_height;
 
   asio::awaitable<void> Protocol();
   asio::awaitable<void> Join();
@@ -75,7 +76,9 @@ Bot::Bot(asio::any_io_executor executor, std::string_view name,
       socket{executor},
       server{server},
       name{name},
-      pass{pass} {
+      pass{pass},
+      field_width{22},
+      field_height{22} {
   asio::co_spawn(executor, std::bind(&Bot::Protocol, this), asio::detached);
 }
 
@@ -200,19 +203,23 @@ unsigned Bot::ShortestPath(int x, int y) {
     if (visited.count(position)) {
       continue;
     }
-    if (!(known_map[position] & static_cast<unsigned>(Direction::LEFT))) {
+    if (!(known_map[position] & static_cast<unsigned>(Direction::LEFT)) &&
+        position.first > 0) {
       auto pos = std::make_pair(position.first - 1, position.second);
       queue.emplace(distance + 1 + AStarHeuristic(pos), pos);
     }
-    if (!(known_map[position] & static_cast<unsigned>(Direction::RIGHT))) {
+    if (!(known_map[position] & static_cast<unsigned>(Direction::RIGHT)) &&
+        position.first < field_width) {
       auto pos = std::make_pair(position.first + 1, position.second);
       queue.emplace(distance + 1 + AStarHeuristic(pos), pos);
     }
-    if (!(known_map[position] & static_cast<unsigned>(Direction::UP))) {
+    if (!(known_map[position] & static_cast<unsigned>(Direction::UP)) &&
+        position.second > 0) {
       auto pos = std::make_pair(position.first, position.second - 1);
       queue.emplace(distance + 1 + AStarHeuristic(pos), pos);
     }
-    if (!(known_map[position] & static_cast<unsigned>(Direction::DOWN))) {
+    if (!(known_map[position] & static_cast<unsigned>(Direction::DOWN)) &&
+        position.second < field_height) {
       auto pos = std::make_pair(position.first, position.second + 1);
       queue.emplace(distance + 1 + AStarHeuristic(pos), pos);
     }