Add vessel entity

entities/vessel_entity.h

@@ -0,0 +1,29 @@
+#ifndef VESSEL_ENTITY_H
+#define VESSEL_ENTITY_H
+
+#include "cargo_entity.h"
+#include "dpoint_entity.h"
+
+
+
+class vessel_entity
+{
+private:
+    static unsigned long long __global_id;
+
+    unsigned long long _id;
+    dpoint_entity _harbor;
+    unsigned int _capacity;
+    QVector<cargo_entity> _cargo;
+
+public:
+    vessel_entity() = default;
+    vessel_entity(const dpoint_entity &harbor, unsigned int capacity);
+
+    unsigned long long id();
+    const dpoint_entity harbor();
+    unsigned int capacity();
+    const QVector<cargo_entity> cargo();
+};
+
+#endif // VESSEL_ENTITY_H