Simple implementation of polygons, you can create them in the init and draw them

polygons.h

@@ -0,0 +1,28 @@
+#ifndef POLYGONS_H_INCLUDED
+#define POLYGONS_H_INCLUDED
+
+// extern ball spaceship;
+
+#include "vec2d.h"
+
+#include <gtk/gtk.h>
+#include <vector>
+
+class polygon {
+  public:
+    vec2d center;
+    double angle;
+    std::vector<vec2d> points;
+
+    void draw(cairo_t* cr) const;
+};
+
+extern polygon* polygons;
+extern uint n_polygons;
+
+extern void polygons_init_state();
+extern void polygons_update_state();
+// extern void polygon_control (double dx, double dy);
+extern void polygons_draw(cairo_t* cr);
+
+#endif