functionality for rendering building impact

29-gorillas-remake/Gorillas Remake/Sources/Controllers/Main/GameScene.swift

@@ -223,7 +223,11 @@ class GameScene: SKScene {
         // won't be detected in `didBegin`
         banana.name = ""
         
-        buildingNode.hitAt(point: buildingLocation)
+        launchCompleted()
+        buildingNode.hit(
+            atPoint: buildingLocation,
+            withImpactSize: CGSize(width: banana.size.width * 3.0, height: banana.size.width * 3.0)
+        )
     }
     
     func launchCompleted() {
@@ -237,9 +241,11 @@ class GameScene: SKScene {
             let newScene = GameScene(size: self.size)
 
             newScene.gameViewController = self.gameViewController
+            self.gameViewController.gameScene = newScene  // 😐 not sure that tight coupling like this is the best
+            
             self.view?.presentScene(newScene, transition: self.sceneTransition)
             
-            self.gameViewController.changeCurrentPlayer()
+            self.gameViewController.launchCompleted()
         }
     }
     

29-gorillas-remake/Gorillas Remake/Sources/Models/BuildingNode.swift

@@ -26,16 +26,17 @@ class BuildingNode: SKSpriteNode {
     var currentImage: UIImage! {
         didSet {
             texture = SKTexture(image: currentImage)
+            configurePhysics()
         }
     }
     
+    
     func setup() {
         name = NodeNames.building.rawValue
         currentImage = draw(size: size)
-        
-        configurePhysics()
     }
     
+    
     func draw(size: CGSize) -> UIImage {
         return renderer.image(actions: { (context: UIGraphicsImageRendererContext) in
             let cgContext = context.cgContext
@@ -66,7 +67,23 @@ class BuildingNode: SKSpriteNode {
     }
     
     
-    func hitAt(point: CGPoint) {
+    func hit(atPoint point: CGPoint, withImpactSize impactSize: CGSize) {
+        let convertedPoint = CGPoint(x: point.x + (size.width / 2.0), y: abs(point.y - (size.height / 2.0)))
         
+        currentImage = renderer.image(actions: { (context: UIGraphicsImageRendererContext) in
+            let cgContext = context.cgContext
+
+            currentImage.draw(at: CGPoint(x: 0, y: 0))
+            
+            cgContext.addEllipse(in: CGRect(
+                x: convertedPoint.x - (impactSize.width / 2.0),
+                y: convertedPoint.y - (impactSize.height / 2.0),
+                width: impactSize.width,
+                height: impactSize.height
+            ))
+            
+            cgContext.setBlendMode(.clear)
+            cgContext.drawPath(using: .fill)
+        })
     }
 }