Split main.cpp to different files

cpp/src/tile.hpp

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <map>
+#include <string_view>
+#include <cstdint>
+
+struct Tile {
+  float cost;
+  uint8_t R, G, B, A;
+};
+
+static const std::map<std::string_view, Tile> tile_types = {
+    {"Grass", {1.0, 0, 200, 0, 255}},
+    {"Mud", {2.0, 100, 100, 100, 255}},
+    {"Road", {0.5, 200, 200, 200, 255}},
+    {"Water", {10.0, 0, 50, 200, 255}},
+};
+