Now you can place and remove pieces from the board

CHANGELOG.md

@@ -1,9 +1,11 @@
 # CHANGELOG
-Here I will update any noteworthy changes to the TetraVex project
+Here I will update any noteworthy changes to the TetraVex project.
 
 ## [Unreleased]
 ### Added
-- Pretty basic board and pieces.
-- Game allows for board sizes from 2x2 to 6x6
-- You can select the set of digits from 6 to 10
+- Pretty basic board and pieces..
+- Game allows for board sizes from 2x2 to 6x6.
+- You can select the set of digits from 6 to 10.
+- You can play without timer or score, but the board will only let you place pieces
+correctly.
 

TetraVex/PieceView.swift

@@ -17,16 +17,21 @@ class PieceView : NSView {
 
     // MARK: - Dragging operations
     override func mouseDown(with event: NSEvent) {
-        isBeingDragged = true
-        lastDraggedPosition = self.convert(event.locationInWindow, to: self)
-        let i = superview?.subviews.index(of: self)
-        var svs = superview!.subviews
-        if (i != svs.count-1) {
-            swap(&svs[i!],&svs[svs.count-1])
-            superview?.subviews = svs
+        if (pieceModel?.boltedInPlace)! == false {
+            isBeingDragged = true
+            lastDraggedPosition = self.convert(event.locationInWindow, to: self)
+            let i = superview?.subviews.index(of: self)
+            var svs = superview!.subviews
+            if (i != svs.count-1) {
+                swap(&svs[i!],&svs[svs.count-1])
+                superview?.subviews = svs
+            }
+            if pieceModel!.isOnBoard {
+                controller?.removeFromBoard(piece: self)
+            }
+            NSCursor.closedHand().push()
+            self.needsDisplay = true
         }
-        NSCursor.closedHand().push()
-        self.needsDisplay = true
     }
 
     func offsetLocation(by dx:CGFloat, dy:CGFloat) {
@@ -35,7 +40,7 @@ class PieceView : NSView {
         self.frame = self.frame.offsetBy(dx: dx, dy: dy*invertDeltaY)
         self.setNeedsDisplay(self.bounds)
     }
-
+    
     override func mouseDragged(with event: NSEvent) {
         if (isBeingDragged) {
             let p : NSPoint = self.convert(event.locationInWindow, to: self)
@@ -46,11 +51,13 @@ class PieceView : NSView {
     }
 
     override func mouseUp(with event: NSEvent) {
-        let dropPosition : NSPoint = superview!.convert(event.locationInWindow, to: nil)
-        controller?.checkPiece(with: self, at: dropPosition)
-        isBeingDragged = false
-        NSCursor.pop()
-        self.needsDisplay = true
+        if isBeingDragged {
+            let dropPosition : NSPoint = superview!.convert(event.locationInWindow, to: nil)
+            controller?.checkPiece(with: self, at: dropPosition)
+            isBeingDragged = false
+            NSCursor.pop()
+            self.needsDisplay = true
+        }
     }
 
     // MARK: - Drawing operations

TetraVex/TVGameViewController.swift

@@ -66,6 +66,14 @@ class TVGameViewController: NSViewController {
         }
     }
 
+    func removeFromBoard(piece p:PieceView) -> Bool {
+        if boardModel!.removePieceFromBoard(p.pieceModel!) {
+            p.pieceModel!.isOnBoard = false
+            return true
+        }
+        return false
+    }
+
     func checkPiece(with pv:PieceView,at dropOffPosition:NSPoint) {
         /* Determine the position of view inside the grid */
         if boardAreaBox.frame.contains(dropOffPosition) {
@@ -75,6 +83,7 @@ class TVGameViewController: NSViewController {
             if boardModel!.addPieceToBoard(pv.pieceModel!, x: i, y: j) {
                 pv.frame.origin.x = CGFloat(i)*pv.frame.width + boardAreaBox.frame.origin.x
                 pv.frame.origin.y = CGFloat(j)*pv.frame.height + boardAreaBox.frame.origin.y
+                pv.pieceModel?.isOnBoard = true
             } else {
                 pv.frame.origin.x = templatePieceView.frame.origin.x + CGFloat(Int.random(0...100))
                 pv.frame.origin.y = templatePieceView.frame.origin.y - CGFloat(Int.random(0...100))

TetraVexKit/PieceModel.swift

@@ -16,7 +16,7 @@ public struct PieceModel {
     public var bottomValue : Int
     public var rightValue : Int
     public var boltedInPlace : Bool = false
-
+    public var isOnBoard : Bool = false
 
     // MARK: - Initializer
     public init(top: Int, left: Int, bottom: Int, right: Int) {