Our hero can walk around the world and won't go through walls.

main.cpp

@@ -2,7 +2,6 @@
 // Use of this source code is governed by the MIT license that can be found in
 // the LICENSE file.
 #include <chrono>                   // for operator""s, chrono_literals
-#include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <iostream>                 // for cout, ostream
 #include <memory>                   // for allocator, shared_ptr
 #include <string>                   // for string, operator<<
@@ -12,7 +11,9 @@
 #include <ftxui/dom/node.hpp>      // for Render
 #include <ftxui/screen/box.hpp>    // for ftxui
 #include <ftxui/component/component.hpp>
+#include <ftxui/component/loop.hpp>
 #include <ftxui/screen/color.hpp>
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
 
 #include <fmt/core.h>
 #include "map.hpp"
@@ -30,34 +31,25 @@ int main() {
 
   Map game_map(50, 27);
   game_map.generate();
+  Matrix &walls = game_map.walls();
+  Room &start = game_map.room(0);
+  Point me = {.x=start.x+1, .y=start.y+1};
 
   auto map = Renderer([&] {
-    Matrix &result = game_map.paths();
-    Matrix &walls = game_map.walls();
-
-    for(size_t x = 0; x < result[0].size(); ++x) {
-      for(size_t y = 0; y < result.size(); ++y) {
-        auto path = result[y][x];
-        if(path == 1000 || walls[y][x] == 1) {
-          // it's a wall or unreachable, use the wall_map
-          const string tile = walls[y][x] == 1 ? "#" : ".";
-          c.DrawText(x*2, y*4, tile, Color::GrayDark);
-        } else {
-          // it's a path number, show it
-          const string tile = format("{}", path);
-          auto color = Color::Palette16(path % 7 + 1);
-          c.DrawText(x*2, y*4, tile, color);
-        }
+    for(size_t x = 0; x < walls[0].size(); ++x) {
+      for(size_t y = 0; y < walls.size(); ++y) {
+        const string tile = walls[y][x] == 1 ? "#" : ".";
+        c.DrawText(x*2, y*4, tile, Color::GrayDark);
       }
     }
 
-    // draw the character
-    //c.DrawText(10*2, 10*4, "@", Color::Blue);
+    c.DrawText(me.x*2, me.y*4, "@", Color::Blue);
 
     return canvas(c);
   });
 
-  auto document = hbox({
+  auto document = Renderer([&]{
+      return hbox({
           hflow(
             vbox(
                 gauge(0.5) | border,
@@ -67,13 +59,37 @@ int main() {
           separator(),
           hbox(map->Render()),
       }) | border;
+    });
 
-  auto screen = Screen::Create(Dimension::Full());
-  Render(screen, document);
+  document |= CatchEvent([&](Event e) -> bool {
+      size_t x = me.x;
+      size_t y = me.y;
 
-  std::cout << reset_position;
-  screen.Print();
-  reset_position = screen.ResetPosition();
+      if(e == Event::ArrowLeft) {
+        x -= 1;
+      }  else if(e == Event::ArrowRight) {
+        x += 1;
+      }  else if(e == Event::ArrowDown) {
+        y += 1;
+      }  else if(e == Event::ArrowUp) {
+        y -= 1;
+      } else {
+        return false;
+      }
+
+      if(game_map.inmap(x,y) && !game_map.iswall(x,y)) {
+        me.x = x;
+        me.y = y;
+      }
+      return true;
+  });
+
+  auto screen = ScreenInteractive::Fullscreen();
+  Loop loop(&screen, document);
+
+  while(!loop.HasQuitted()) {
+    loop.RunOnceBlocking();
+  }
 
   return 0;
 }

map.cpp

@@ -292,6 +292,10 @@ void Map::generate() {
   }
 }
 
+bool Map::iswall(size_t x, size_t y) {
+  return m_walls[y][x] == WALL_VALUE;
+}
+
 
 void Map::dump() {
   dump_map("PATHS", m_paths);

map.hpp

@@ -59,11 +59,15 @@ public:
   int limit() { return m_limit; }
   size_t width() { return m_walls[0].size(); }
   size_t height() { return m_walls.size(); }
+  Room &room(size_t at) {
+    return m_rooms[at];
+  }
 
   void make_room(size_t origin_y, size_t origin_x, size_t width, size_t height);
 
   void add_door(Room &room);
   bool inmap(size_t x, size_t y);
+  bool iswall(size_t x, size_t y);
   bool neighbors(Point &out, bool up);
   void generate();
   void place_rooms(Room &root);