Prepare for pieces animation

src/game_tab/left_panel/GameTabLeftPanel.cpp

@@ -58,6 +58,16 @@ void GameTabLeftPanel::OnPlay(wxCommandEvent &event) {
     NotifyEditor();
   }
   Notify();
+ 
+
+  std::string fen = game->GetFen();
+  std::map<char, std::uint8_t> captures;
+  HalfMove *m = game->GetCurrentMove();
+  if (m != NULL) {
+    captures = m->GetLineCaptures();
+  } 
+  /*board_canvas->Animate(chessarbiter::FENParser::Parse(fen).board,
+                           game->IsBlackToPlay(), captures,"a1","a2"); */
 }
 
 void GameTabLeftPanel::Notify() {
@@ -66,9 +76,10 @@ void GameTabLeftPanel::Notify() {
   HalfMove *m = game->GetCurrentMove();
   if (m != NULL) {
     captures = m->GetLineCaptures();
-  }
+  } 
   board_canvas->SetupBoard(chessarbiter::FENParser::Parse(fen).board,
                            game->IsBlackToPlay(), captures);
+
   fen_text_field->SetValue(game->GetFen());
 }
 

src/game_tab/left_panel/board/BoardCanvas.cpp

@@ -8,12 +8,20 @@ BoardCanvas::BoardCanvas(wxFrame *parent)
   board = "rnbqkbnrpppppppp                                PPPPPPPPRNBQKBNR";
   is_dragging = false;
   valid_drag = false;
+  reuseBuffer=false;
   t_captures->ResizePieces(t->GetPiecesSizes() * CAPTURE_FACTOR);
   SetClockTime(-1, -1, -1, false);
   SetClockTime(-1, -1, -1, true);
   ApplyPreferences();
   // The following should be called when using an EVT_PAINT handler
   SetBackgroundStyle(wxBG_STYLE_PAINT);
+  timer.Bind(wxEVT_TIMER, &BoardCanvas::OnTimerTick, this);
+  duration=500;
+  fps=30;
+}
+
+void BoardCanvas::OnTimerTick(wxTimerEvent &event) {
+  Refresh();
 }
 
 BoardCanvas::~BoardCanvas() {
@@ -35,22 +43,35 @@ void BoardCanvas::OnPaint(wxPaintEvent &event) {
   dc.SetBackground(*wxWHITE_BRUSH);
   dc.Clear();
 
-  // Setting up required attributes
-  REFRESH_MOUSE_LOCATION();
-  square_width = t->GetSquaresSizes();
-  canvas_size = dc.GetSize();
-  boardX = (canvas_size.x - (8 * square_width)) / 2;
-  boardY = (canvas_size.y - (8 * square_width)) / 2;
-  if (boardX > canvas_size.x)
-    boardX = 0;
-  if (boardY > canvas_size.y)
-    boardY = 0;
+  if(!reuseBuffer){
+    // Setting up required attributes
+    REFRESH_MOUSE_LOCATION();
+    square_width = t->GetSquaresSizes();
+    canvas_size = dc.GetSize();
+    boardX = (canvas_size.x - (8 * square_width)) / 2;
+    boardY = (canvas_size.y - (8 * square_width)) / 2;
+    if (boardX > canvas_size.x)
+      boardX = 0;
+    if (boardY > canvas_size.y)
+      boardY = 0;
 
-  // Setup buffer (later use for animations)
-  buffer=new wxBitmap(canvas_size.x,canvas_size.y,32);
-  wxMemoryDC memDC(*buffer);
-  DrawBoard(memDC);
-  dc.Blit(0,0,canvas_size.x,canvas_size.y,(wxDC*)&memDC,0,0);
+    // Setup buffer (later use for animations)
+    buffer=new wxBitmap(canvas_size.x,canvas_size.y,32);
+    wxMemoryDC memDC(*buffer);
+    DrawBoard(memDC);
+    dc.Blit(0,0,canvas_size.x,canvas_size.y,(wxDC*)&memDC,0,0);
+  }
+  else {
+    // Otherwise reuse buffer and animate. TEST CODE FOR NOW:
+    dc.DrawBitmap(*buffer, 0, 0, true);
+    dc.DrawRectangle(wxRect(0+frame,0+frame,50,50));
+    frame++;
+    if(frame*fps>=duration){
+      timer.Stop();
+      reuseBuffer=false;
+      SetupBoard(final_board, final_is_black_turn, final_captures);
+    }
+  }
 }
 
 void BoardCanvas::ApplyPreferences() {
@@ -83,6 +104,22 @@ void BoardCanvas::SetupBoard(std::string board, bool is_black_turn,
   Refresh();
 }
 
+void BoardCanvas::Animate(std::string board, bool is_black_turn, std::map<char, std::uint8_t> captures, std::string src, std::string dst){
+  this->final_board=board;
+  this->final_is_black_turn=is_black_turn;
+  this->final_captures=captures;
+  this->src=src;
+  this->dst=dst;
+
+  std::uint8_t pfile = src[0]-'a';
+  std::uint8_t prank = src[1]-'1';
+  char piece_moved = this->board[(7 - pfile) + 8 * (7-prank)]; // Piece to move
+  // Animate piece here
+  reuseBuffer=true;
+  frame=0;
+  timer.Start(1000/fps); // in ms;
+}
+
 void BoardCanvas::DrawBoard(wxDC &dc) {
   std::uint32_t piece_width = t->GetPiecesSizes();
   std::uint32_t centrer_offset = (square_width - piece_width) / 2;

src/game_tab/left_panel/board/BoardCanvas.hpp

@@ -57,8 +57,16 @@ class BoardCanvas : public wxPanel {
   ClockTime black_time, white_time;
   bool frozen,lock_square_size;
 
-  // Drawing buffer
+  // Drawing buffer (ANIMATIONS)
   wxBitmap *buffer;
+  bool reuseBuffer;
+  wxTimer timer;
+  int frame,duration,fps;
+  std::string final_board;
+  bool final_is_black_turn;
+  std::map<char, std::uint8_t> final_captures;
+  std::string src;
+  std::string dst;
 
 public:
   BoardCanvas(wxFrame *parent);
@@ -71,8 +79,10 @@ public:
   void MouseEvent(wxMouseEvent &event);
   void Zoom(std::int32_t zoom);
   void Swap();
+  void OnTimerTick(wxTimerEvent &event);
   void SetupBoard(std::string board, bool is_black_turn,
                   std::map<char, std::uint8_t> captures);
+  void Animate(std::string board, bool is_black_turn, std::map<char, std::uint8_t> captures, std::string src, std::string dst);
   void SetClockTime(short hours, short min, short sec, bool IsBlack);
   DECLARE_EVENT_TABLE()
 };