Added tutorial scenes for mini games.

Powerup.xcodeproj/project.pbxproj

@@ -36,6 +36,7 @@
 		D959CBD31EE64A3A00C31753 /* DatabaseAccessor.swift in Sources */ = {isa = PBXBuildFile; fileRef = D959CBD21EE64A3A00C31753 /* DatabaseAccessor.swift */; };
 		D95B03CC1EDE7470001DB858 /* MapViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D95B03CB1EDE7470001DB858 /* MapViewController.swift */; };
 		D95B03CE1EDEA680001DB858 /* MiniGameViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D95B03CD1EDEA680001DB858 /* MiniGameViewController.swift */; };
+		D96944AF1F2EE97900FBE0E4 /* SKTutorialScene.swift in Sources */ = {isa = PBXBuildFile; fileRef = D96944AE1F2EE97900FBE0E4 /* SKTutorialScene.swift */; };
 		D969D26C1EE8F36200A5133F /* FMResultSetNullCheckExtension.swift in Sources */ = {isa = PBXBuildFile; fileRef = D969D26B1EE8F36200A5133F /* FMResultSetNullCheckExtension.swift */; };
 		D984D3011F0F598C0006270D /* SinkToSwimGameScene.swift in Sources */ = {isa = PBXBuildFile; fileRef = D984D3001F0F598C0006270D /* SinkToSwimGameScene.swift */; };
 		D984D3031F0F59A40006270D /* SinkToSwimQuestion.swift in Sources */ = {isa = PBXBuildFile; fileRef = D984D3021F0F59A40006270D /* SinkToSwimQuestion.swift */; };
@@ -118,6 +119,7 @@
 		D959CBD21EE64A3A00C31753 /* DatabaseAccessor.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DatabaseAccessor.swift; sourceTree = "<group>"; };
 		D95B03CB1EDE7470001DB858 /* MapViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = MapViewController.swift; sourceTree = "<group>"; };
 		D95B03CD1EDEA680001DB858 /* MiniGameViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = MiniGameViewController.swift; sourceTree = "<group>"; };
+		D96944AE1F2EE97900FBE0E4 /* SKTutorialScene.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = SKTutorialScene.swift; path = ../SKTutorialScene.swift; sourceTree = "<group>"; };
 		D969D26B1EE8F36200A5133F /* FMResultSetNullCheckExtension.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = FMResultSetNullCheckExtension.swift; sourceTree = "<group>"; };
 		D984D3001F0F598C0006270D /* SinkToSwimGameScene.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SinkToSwimGameScene.swift; sourceTree = "<group>"; };
 		D984D3021F0F59A40006270D /* SinkToSwimQuestion.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SinkToSwimQuestion.swift; sourceTree = "<group>"; };
@@ -187,6 +189,7 @@
 				D9E74B771F1F145900A42B7E /* Vocab Matching Game */,
 				D9AAA99E1EF21C3D00287A79 /* Mine Sweeper Game */,
 				D984D2FF1F0F596E0006270D /* Sink to Swim Game */,
+				D96944AE1F2EE97900FBE0E4 /* SKTutorialScene.swift */,
 				D910FF181F04AB3200C444DA /* DataSource.swift */,
 				D959CBD21EE64A3A00C31753 /* DatabaseAccessor.swift */,
 				D984D3041F0F59BA0006270D /* SKMultilineLabel.swift */,
@@ -442,6 +445,7 @@
 				2A2A4DB71B373C5B00D50860 /* StartViewController.swift in Sources */,
 				D9E74B7B1F1F14ED00A42B7E /* VocabMatchingClipboard.swift in Sources */,
 				2AF82A8D1B4BA74A00307BED /* FMDatabase.m in Sources */,
+				D96944AF1F2EE97900FBE0E4 /* SKTutorialScene.swift in Sources */,
 				D984D3051F0F59BA0006270D /* SKMultilineLabel.swift in Sources */,
 				D959CBCB1EE6481100C31753 /* Question.swift in Sources */,
 				D959CBC91EE643F400C31753 /* Avatar.swift in Sources */,

Powerup/Images.xcassets/minesweeper_tutorial_1.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 1.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 1-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 1-2.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/Images.xcassets/minesweeper_tutorial_2.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 2-2.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 2-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 2.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/Images.xcassets/minesweeper_tutorial_3.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 3-2.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 3-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "minesweeper tutorial 3.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/Images.xcassets/sink_to_swim_end_scene.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim end scene-2.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim end scene.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim end scene-1.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/Images.xcassets/sink_to_swim_tutorial_1.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 1.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 1-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 1-2.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/Images.xcassets/sink_to_swim_tutorial_2.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 2.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 2-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 2-2.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/Images.xcassets/sink_to_swim_tutorial_3.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 3-2.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 3-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "sink to swim tutorial 3.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/Images.xcassets/vocabmatching_tutorial_1.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "Vocab Matching Tutorial 1.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "Vocab Matching Tutorial 1-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "Vocab Matching Tutorial 1-2.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/Images.xcassets/vocabmatching_tutorial_2.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "Vocab Matching tutorial 2-2.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "Vocab Matching tutorial 2.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "Vocab Matching tutorial 2-1.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Powerup/MinesweeperGameScene.swift

@@ -8,6 +8,12 @@ class MinesweeperGameScene: SKScene {
     // MARK: Game Constants
     let gridSizeCount = 5
 
+    let tutorialSceneImages = [
+        "minesweeper_tutorial_1",
+        "minesweeper_tutorial_2",
+        "minesweeper_tutorial_3"
+    ]
+
     // How many boxes could be selected each round.
     let selectionMaxCount = 5
 
@@ -96,8 +102,10 @@ class MinesweeperGameScene: SKScene {
     let bannerLayer = CGFloat(0.2)
     let uiLayer = CGFloat(0.3)
     let uiTextLayer = CGFloat(0.4)
+    let tutorialSceneLayer = CGFloat(5)
 
     // MARK: Properties
+    var tutorialScene: SKTutorialScene!
 
     // Keep a reference to the view controller for end game transition.
     // (This is assigned in the MiniGameViewController class.)
@@ -118,6 +126,9 @@ class MinesweeperGameScene: SKScene {
     // Avoid player interaction with boxes when they are animating.
     var boxSelected: Bool = false
 
+    // Avoid player interaction with boxes when the game is in tutorial scene.
+    var inTutorial = true
+
     // MARK: Constructor
     override init(size: CGSize) {
 
@@ -204,9 +215,6 @@ class MinesweeperGameScene: SKScene {
                 gameGrid[x].append(newBox)
             }
         }
-
-        // Start the first round.
-        newRound()
     }
 
 
@@ -236,6 +244,15 @@ class MinesweeperGameScene: SKScene {
                 addChild(box)
             }
         }
+
+        // Show tutorial scene. After that, start the game.
+        tutorialScene = SKTutorialScene(namedImages: tutorialSceneImages, size: size) {
+            self.newRound()
+            self.inTutorial = false
+        }
+        tutorialScene.position = CGPoint(x: size.width / 2.0, y: size.height / 2.0)
+        tutorialScene.zPosition = tutorialSceneLayer
+        addChild(tutorialScene)
     }
 
     /**
@@ -390,6 +407,7 @@ class MinesweeperGameScene: SKScene {
 
     // MARK: Touch inputs
     override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
+        if inTutorial { return }
 
         // Only the first touch is effective.
         guard let touch = touches.first else {
@@ -429,6 +447,7 @@ class MinesweeperGameScene: SKScene {
     }
 
     override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
+        if inTutorial { return }
 
         // Only the first touch is effective.
         guard let touch = touches.first else {