diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0bb8e6a..c3e9640 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,7 +51,7 @@ macro(blt_add_project name source type)
     project(tower-defense)
 endmacro()
 
-project(tower-defense VERSION 0.0.18)
+project(tower-defense VERSION 0.0.19)
 
 option(ENABLE_ADDRSAN "Enable the address sanitizer" OFF)
 option(ENABLE_UBSAN "Enable the ub sanitizer" OFF)
diff --git a/include/bounding_box.h b/include/bounding_box.h
new file mode 100644
index 0000000..8ec6cbb
--- /dev/null
+++ b/include/bounding_box.h
@@ -0,0 +1,28 @@
+#pragma once
+/*
+ *  Copyright (C) 2024  Brett Terpstra
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef BOUNDING_BOX_H
+#define BOUNDING_BOX_H
+
+namespace td
+{
+	class bounding_box_t
+	{};
+}
+
+#endif //BOUNDING_BOX_H
diff --git a/include/enemies.h b/include/enemies.h
index 9ad0ac8..8e0f3be 100644
--- a/include/enemies.h
+++ b/include/enemies.h
@@ -23,6 +23,7 @@
 #include <string>
 #include <vector>
 #include <blt/std/types.h>
+#include <bounding_box.h>
 
 namespace td
 {
diff --git a/include/map.h b/include/map.h
index 0ec26a5..e086874 100644
--- a/include/map.h
+++ b/include/map.h
@@ -26,13 +26,15 @@
 
 namespace td
 {
-
 	class path_segment_t
 	{
 	public:
+		explicit path_segment_t(const blt::gfx::curve2d_t& curve): m_curve{curve}
+		{}
 
 	private:
-
+		blt::gfx::curve2d_t m_curve;
+		std::vector<enemy_instance_t> m_enemies;
 	};
 
 	class map_t
@@ -40,9 +42,7 @@ namespace td
 	public:
 
 	private:
-
 	};
-
 }
 
 #endif //MAP_H
diff --git a/lib/blt-with-graphics b/lib/blt-with-graphics
index f60ce3d..66e764b 160000
--- a/lib/blt-with-graphics
+++ b/lib/blt-with-graphics
@@ -1 +1 @@
-Subproject commit f60ce3dc0b6528e0fd8ce65eb4def187c8d5834a
+Subproject commit 66e764be6be316c31a35bf62879a8bfc77f12006
diff --git a/src/main.cpp b/src/main.cpp
index 7dd6e28..4cd48c8 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -13,7 +13,7 @@ blt::gfx::first_person_camera camera;
 float t = 0;
 float dir = 1;
 
-blt::gfx::curve2d_t curve{blt::vec2{250, 250}, blt::vec2{400, 500}, blt::vec2{600, 500}, blt::vec2{750, 250}};
+blt::gfx::curve2d_t curve{blt::vec2{250, 250}, blt::vec2{350, 500}, blt::vec2{650, 500}, blt::vec2{750, 250}};
 blt::gfx::curve2d_mesh_data_t mesh;
 
 void init(const blt::gfx::window_data&)