1 files changed, 11 insertions, 0 deletions

@@ -2,13 +2,24 @@
 #define ENTITY_H_0D6CB29A
 
 #include <set>
+#include <vector>
 #include "vector.h"
 #include "enums.h"
 #include "direction.h"
 
+class Entity;
+
+using id_type = std::vector<Entity>::size_type;
+
 class Entity {
 public:
 
+  Entity(id_type id) : id(id)
+  {
+  }
+
+  id_type id;
+
   // Transform
   vec2s pos;
   vec2s size;