3 files changed, 54 insertions, 36 deletions

@@ -38,25 +38,26 @@ struct Decoration {
 };
 
 struct Cell {
-    inline static Cell Undefined() {
-        Cell c;
-        c.undefined = true;
-        return c;
-    }
-    bool undefined = false;
-
-    bool start = false;
-    enum class Dir {NONE, LEFT, RIGHT, UP, DOWN};
-    Dir end = Dir::NONE;
-    std::shared_ptr<Decoration> decoration = nullptr;
     enum class Dot {NONE, BLACK, BLUE, YELLOW, INVISIBLE};
     Dot dot = Dot::NONE;
     enum class Gap {NONE, BREAK, FULL};
     Gap gap = Gap::NONE;
-
     // Line color
     enum class Color {NONE, BLACK, BLUE, YELLOW};
     Color color = Color::NONE;
+
+    std::shared_ptr<Decoration> decoration = nullptr;
+
+    bool start = false;
+    enum class Dir {NONE, LEFT, RIGHT, UP, DOWN};
+    Dir end = Dir::NONE;
+
+    inline static Cell Undefined() {
+        Cell c;
+        c.undefined = true;
+        return c;
+    }
+    bool undefined = false;
 };
 
 struct Negation {};
@@ -95,7 +95,7 @@ void PuzzleSerializer::ReadExtras(Puzzle& p) {
             p.grid[x][y].start = true;
                 }
         p.grid[x][y].dot = FlagsToDot(flags);
-        if (flags & Flags::IS_FULL_GAP) {
+        if (flags & Flags::HAS_NO_CONN) {
             p.grid[x][y].gap = Cell::Gap::FULL;
         }
         }
@@ -175,15 +175,13 @@ void PuzzleSerializer::WriteIntersections(const Puzzle& p) {
     // Grided intersections
         for (int y=p.height-1; y>=0; y-=2) {
                 for (int x=0; x<p.width; x+=2) {
-                        _intersectionLocations.push_back(MIN + (x/2) * WIDTH_INTERVAL);
-                        _intersectionLocations.push_back(MAX - (y/2) * HEIGHT_INTERVAL);
+            auto [xPos, yPos] = xy_to_pos(p, x, y);
+                        _intersectionLocations.push_back(xPos);
+                        _intersectionLocations.push_back(yPos);
                         int flags = 0;
             if (p.grid[x][y].start) {
                 flags |= Flags::IS_STARTPOINT;
             }
-            if (p.grid[x][y].gap == Cell::Gap::FULL) {
-                flags |= Flags::IS_FULL_GAP;
-            }
             switch (p.grid[x][y].dot) {
                 case Cell::Dot::BLACK:
                     flags |= Flags::HAS_DOT;
@@ -201,15 +199,15 @@ void PuzzleSerializer::WriteIntersections(const Puzzle& p) {
 
             int numConnections = 0;
             if (p.grid[x][y].end != Cell::Dir::NONE) numConnections++;
-                        // Create connections for this intersection for bottom/left only.
-            // Bottom connection
+                        // Create connections for this intersection for top/left only.
+            // Top connection
                         if (y > 0 && p.grid[x][y-1].gap != Cell::Gap::FULL) {
                                 _connectionsA.push_back(xy_to_loc(p, x, y-2));
                                 _connectionsB.push_back(xy_to_loc(p, x, y));
                 flags |= Flags::HAS_VERTI_CONN;
                 numConnections++;
                         }
-            // Top connection
+            // Bottom connection
             if (y < p.height - 1 && p.grid[x][y+1].gap != Cell::Gap::FULL) {
                 flags |= Flags::HAS_VERTI_CONN;
                 numConnections++;
@@ -226,7 +224,9 @@ void PuzzleSerializer::WriteIntersections(const Puzzle& p) {
                 flags |= Flags::HAS_HORIZ_CONN;
                 numConnections++;
             }
+            if (numConnections == 0) flags |= HAS_NO_CONN;
             if (numConnections == 1) flags |= HAS_ONE_CONN;
+
                         _intersectionFlags.push_back(flags);
                 }
         }
@@ -268,21 +268,25 @@ void PuzzleSerializer::WriteDots(const Puzzle& p) {
                         if (x%2 == y%2) continue; // Cells are invalid, intersections are already handled.
                         if (p.grid[x][y].dot == Cell::Dot::NONE) continue;
 
-            // We need to introduce a new segment -- 
-                        // Locate the segment we're breaking
+            // We need to introduce a new segment which contains this dot. Break the existing segment, and add one.
+            int connectionLocation = -1;
                         for (int i=0; i<_connectionsA.size(); i++) {
                                 auto [x1, y1] = loc_to_xy(p, _connectionsA[i]);
                                 auto [x2, y2] = loc_to_xy(p, _connectionsB[i]);
                                 if ((x1+1 == x && x2-1 == x && y1 == y && y2 == y) ||
                                         (y1+1 == y && y2-1 == y && x1 == x && x2 == x)) {
-                                        int other_connection = _connectionsB[i];
-                                        _connectionsB[i] = static_cast<int>(_intersectionFlags.size());
-                                        
-                                        _connectionsA.push_back(other_connection);
-                                        _connectionsB.push_back(static_cast<int>(_intersectionFlags.size()));
-                                        break;
+                    connectionLocation = i;
+                    break;
                                 }
                         }
+            if (connectionLocation == -1) continue; // @Error
+
+            // @Assume: B > A for connections. To remove, add the horiz/verti check, see gaps.
+            int other_connection = _connectionsB[connectionLocation];
+                        _connectionsB[connectionLocation] = static_cast<int>(_intersectionFlags.size());
+                        _connectionsA.push_back(other_connection);
+                        _connectionsB.push_back(static_cast<int>(_intersectionFlags.size()));
+
                         // Add this dot to the end
             auto [xPos, yPos] = xy_to_pos(p, x, y);
                         _intersectionLocations.push_back(xPos);
@@ -313,11 +317,24 @@ void PuzzleSerializer::WriteGaps(const Puzzle& p) {
                         if (x%2 == y%2) continue; // Cells are invalid, intersections are already handled.
                         if (p.grid[x][y].gap != Cell::Gap::BREAK) continue;
 
+            // We need to introduce a new segment which contains this dot. Break the existing segment, and add one.
+            int connectionLocation = -1;
+                        for (int i=0; i<_connectionsA.size(); i++) {
+                                auto [x1, y1] = loc_to_xy(p, _connectionsA[i]);
+                                auto [x2, y2] = loc_to_xy(p, _connectionsB[i]);
+                                if ((x1+1 == x && x2-1 == x && y1 == y && y2 == y) ||
+                                        (y1+1 == y && y2-1 == y && x1 == x && x2 == x)) {
+                                        connectionLocation = i;
+                    break;
+                                }
+                        }
+            if (connectionLocation == -1) continue; // @Error
+
             auto [xPos, yPos] = xy_to_pos(p, x, y);
             // Reminder: Y goes from 0.0 (bottom) to 1.0 (top)
             if (x%2 == 0) { // Vertical gap
-                _connectionsA.push_back(xy_to_loc(p, x, y-1));
-                _connectionsB.push_back(static_cast<int>(_intersectionFlags.size()));
+                _connectionsA[connectionLocation] = xy_to_loc(p, x, y-1);
+                _connectionsB[connectionLocation] = static_cast<int>(_intersectionFlags.size());
                             _intersectionLocations.push_back(xPos);
                             _intersectionLocations.push_back(yPos + VERTI_GAP_SIZE / 2);
                 _intersectionFlags.push_back(Flags::HAS_ONE_CONN | Flags::HAS_VERTI_CONN);
@@ -328,8 +345,8 @@ void PuzzleSerializer::WriteGaps(const Puzzle& p) {
                             _intersectionLocations.push_back(yPos - VERTI_GAP_SIZE / 2);
                 _intersectionFlags.push_back(Flags::HAS_ONE_CONN | Flags::HAS_VERTI_CONN);
             } else if (y%2 == 0) { // Horizontal gap
-                _connectionsA.push_back(xy_to_loc(p, x-1, y));
-                _connectionsB.push_back(static_cast<int>(_intersectionFlags.size()));
+                _connectionsA[connectionLocation] = xy_to_loc(p, x-1, y);
+                _connectionsB[connectionLocation] = static_cast<int>(_intersectionFlags.size());
                             _intersectionLocations.push_back(xPos - HORIZ_GAP_SIZE / 2);
                             _intersectionLocations.push_back(yPos);
                 _intersectionFlags.push_back(Flags::HAS_ONE_CONN | Flags::HAS_HORIZ_CONN);
@@ -422,8 +439,8 @@ int PuzzleSerializer::xy_to_dloc(const Puzzle& p, int x, int y) const {
 
 std::tuple<float, float> PuzzleSerializer::xy_to_pos(const Puzzle& p, int x, int y) const {
         return {
-        MIN + (x/2) * WIDTH_INTERVAL,
-        MAX - (y/2) * HEIGHT_INTERVAL
+        MIN + (x/2.0f) * WIDTH_INTERVAL,
+        MAX - (y/2.0f) * HEIGHT_INTERVAL
     };
 }
 
@@ -17,7 +17,7 @@ private:
     enum Flags {
         IS_ENDPOINT =            0x1,
         IS_STARTPOINT =          0x2,
-        IS_FULL_GAP =            0x8,
+        HAS_NO_CONN =            0x8,
         HAS_DOT =               0x20,
         DOT_IS_BLUE =          0x100,
         DOT_IS_ORANGE =        0x200,