We have items and a conveyor belt!

Map is now a singleton so nodes can look up blocks that are next to them

Conveyor block/entity now exists and can move an item to the right

Added a wrench item for conveyor belts to move, it has the best texture
ever

src/app.cpp

@@ -1,7 +1,10 @@
 #include "app.h"
 
 #include "map/map.h"
+#include "interfaces/itemsink.h"
+#include "items/wrench.h"
 #include "tiles/rainbow.h"
+#include "tiles/conveyor.h"
 #include "tiles/dirt.h"
 #include "tiles/grass.h"
 #include "util/vector2.h"
@@ -23,14 +26,16 @@ bool App::OnUserCreate()
 
 bool App::OnUserUpdate(float delta)
 {
+    auto &map = Map::instance();
+
     Vector2<int> screen = {ScreenWidth(), ScreenHeight()};
     Vector2<int> mouse = {GetMouseX(), GetMouseY()};
 
     // Save and load keys
     if(GetKey(olc::Key::S).bReleased)
-        m_map.save();
+        map.save();
     if(GetKey(olc::Key::L).bReleased)
-        m_map.load();
+        map.load();
 
     // Basic block placing
     if(GetMouse(0).bPressed) {
@@ -38,14 +43,21 @@ bool App::OnUserUpdate(float delta)
         auto tile_pos = screen_pos / (TILE_SIZE + 1);
         if(screen_pos.x() < 0) tile_pos -= {1, 0};
         if(screen_pos.y() < 0) tile_pos -= {0, 1};
-        m_map.set_tile(tile_pos, new Rainbow());
+        map.set_tile(tile_pos, new Conveyor());
     }
     if(GetMouse(1).bPressed) {
         auto screen_pos = mouse - m_camera_pos;
         auto tile_pos = screen_pos / (TILE_SIZE + 1);
         if(screen_pos.x() < 0) tile_pos -= {1, 0};
         if(screen_pos.y() < 0) tile_pos -= {0, 1};
-        m_map.set_tile(tile_pos, new Dirt());
+        // map.set_tile(tile_pos, new Dirt());
+        auto sink = dynamic_cast<ItemSink *>(&map.at(tile_pos).entity());
+        std::cout << "Insert " << sink << std::endl;
+        if(sink) {
+            std::cout << sink->can_accept(*(new Wrench())) << std::endl;
+            sink->insert(*(new Wrench()));
+            std::cout << sink->can_accept(*(new Wrench())) << std::endl;
+        }
     }
 
     // Pan camera with middle mouse
@@ -68,7 +80,7 @@ bool App::OnUserUpdate(float delta)
 
     for(int y = min.y() - 1; y < max.y() + 1; y++) {
         for(int x = min.x() - 1; x < max.x() + 1; x++) {
-            auto &node = m_map.at(Vector2<int>(x, y));
+            auto &node = map.at(Vector2<int>(x, y));
             node.update(delta);
             node.render(m_render);
         }

src/app.h

@@ -17,7 +17,6 @@ public:
 
 private:
     Render m_render;
-    Map m_map;
 
     Vector2<int> m_drag_start;
     Vector2<int> m_camera_pos;

src/map/map.h

@@ -10,6 +10,14 @@ class Map {
     public:
         Map() = default;
 
+        Map(Map const &) = delete;
+        void operator=(const Map &) = delete;
+
+        static Map &instance() {
+            static Map s_instance;
+            return s_instance;
+        }
+
         Node &at(Vector2<int> pos);
         void set_tile(Vector2<int> pos, Tile *tile);