PointProbe and point movement

gridpreview.h

@@ -7,6 +7,20 @@
 #include <iostream>
 #include "line.h"
 
+struct PointProbe
+{
+    int ownerIndex = -1;
+    bool isStart = true;
+    bool inBounds = true;
+
+    PointProbe() {}
+
+    PointProbe(int owner, bool start = true, bool bounds = true):
+        ownerIndex(owner),
+        isStart(start),
+        inBounds(bounds) {}
+};
+
 class GridPreview : public QWidget
 {
     Q_OBJECT
@@ -16,6 +30,7 @@ class GridPreview : public QWidget
     const QString tableTemplate = "return {\n    width = %1,\n    height = %2,\n    lines = {\n%3\n    }\n}";
 
     bool mouseCaptured = false;
+    PointProbe capturedProbe, lastProbe;
 public:
     explicit GridPreview(QWidget *parent = nullptr);
     void setSize(int newWidth, int newHeight);
@@ -30,6 +45,7 @@ public:
     int getWidth();
     int getHeight();
     const Line& getLine(int index);
+    const PointProbe& getCapturedProbe();
 
     const QString toLuaTable();
     void paintEvent(QPaintEvent* event);
@@ -42,8 +58,12 @@ public:
     const QPoint localMousePosition(QMouseEvent* event);
     const QPoint snapToGrid(const QPoint& global);
 
-    double isPointOccupied(const QPoint& point);
-    double pointInBounds(const QPoint& point);
+    bool isPointOccupied(const QPoint& point);
+    bool pointInBounds(const QPoint& point);
+    bool pointIsFree(PointProbe &pp);
+
+    int getPointOwner(const QPoint& point);
+    const PointProbe probePoint(const QPoint& point);
 signals:
     void updatedContents();
 };