SpriteHandler.h:

* Added support for sprite rotation in VectorSprite.

SpriteHandler.h

@@ -261,6 +261,8 @@ class VectorSprite : public Sprite
 
   std::vector<std::unique_ptr<VectorFrame>> vector_frames;
 
+  float rot_rad = 0.f;
+
   VectorFrame* fetch_frame(int anim_frame)
   {
     while (vector_frames.size() <= anim_frame)
@@ -290,6 +292,11 @@ class VectorSprite : public Sprite
     return *vector_frames[frame_id];
   }
 
+  void set_rotation(float rot_deg)
+  {
+    rot_rad = math::deg2rad(rot_deg);
+  }
+
   template<int NR, int NC>
   void draw(ScreenHandler<NR, NC>& sh, int sim_frame)
   {
@@ -298,10 +305,16 @@ class VectorSprite : public Sprite
     for (const auto& line_seg : vector_frame.line_segments)
     {
       const auto aspect_ratio = 1.5f;
-      auto r0 = pos.r + math::roundI(static_cast<float>(line_seg.pos[0].r));
-      auto c0 = pos.c + math::roundI(static_cast<float>(line_seg.pos[0].c)*aspect_ratio);
-      auto r1 = pos.r + math::roundI(static_cast<float>(line_seg.pos[1].r));
-      auto c1 = pos.c + math::roundI(static_cast<float>(line_seg.pos[1].c)*aspect_ratio);
+      auto rr0 = static_cast<float>(line_seg.pos[0].r);
+      auto cc0 = static_cast<float>(line_seg.pos[0].c);
+      auto rr1 = static_cast<float>(line_seg.pos[1].r);
+      auto cc1 = static_cast<float>(line_seg.pos[1].c);
+      float C = std::cos(rot_rad);
+      float S = std::sin(rot_rad);
+      auto r0 = pos.r + math::roundI(C*rr0 - S*cc0);
+      auto c0 = pos.c + math::roundI((S*rr0 + C*cc0)*aspect_ratio);
+      auto r1 = pos.r + math::roundI(C*rr1 - S*cc1);
+      auto c1 = pos.c + math::roundI((S*rr1 + C*cc1)*aspect_ratio);
       RC p0 { r0, c0 };
       RC p1 { r1, c1 };
       bresenham::plot_line(sh, p0, p1, std::string(1, line_seg.ch), line_seg.style.fg_color, line_seg.style.bg_color);