card dragging

src/game/Puzzle.h

@@ -2,7 +2,7 @@
 #include <cstdint>
 #include <imgui.h>
 
-#include "Gen.h"
+#include "Gen.h" // IWYU pragma: keep
 
 namespace Puzzle
 {
@@ -36,6 +36,11 @@ namespace Puzzle
     PuzzleElementType::Enum& EditCardNodeAt(StaticPuzzleCard& card, uint8_t rotation, int8_t x, int8_t y);
     void DrawCard(const StaticPuzzleCard& card, uint8_t rotation, ImVec2 pos);
 
+    // TODO: targetPos is of type CardPos
+    bool ReturnPlacedCard(PuzzleData& obj, PuzPos targetPos);
+    // TODO: targetPos is of type CardPos
+    bool DragAvailableCardTo(PuzzleData& obj, PuzPos targetPos, int32_t availIdx, uint8_t rotation);
+
     struct PuzzleSolver
     {
         bool IsPuzzleSolved(const Generated::PuzzleData& puzzle);