From 893741e049c5b5b40278a14bb01515ca98b4864f Mon Sep 17 00:00:00 2001
From: Hassan Emad <>
Date: Mon, 4 Jan 2021 13:26:54 +0200
Subject: [PATCH 1/3] Physics updated

---
 FlappyBird/GameScene.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/FlappyBird/GameScene.swift b/FlappyBird/GameScene.swift
index af93d4d..9e81077 100644
--- a/FlappyBird/GameScene.swift
+++ b/FlappyBird/GameScene.swift
@@ -32,7 +32,7 @@ class GameScene: SKScene, SKPhysicsContactDelegate{
         canRestart = true
         
         // setup physics
-        self.physicsWorld.gravity = CGVector( dx: 0.0, dy: -5.0 )
+        self.physicsWorld.gravity = CGVector( dx: 0.0, dy: -6.0 )
         self.physicsWorld.contactDelegate = self
         
         // setup background color

From a0ffcda5ad1d618440c3b71cfbd01ab2362149a0 Mon Sep 17 00:00:00 2001
From: Hassan Emad <>
Date: Mon, 4 Jan 2021 14:20:04 +0200
Subject: [PATCH 2/3] Added difficulty increase and leveling

---
 FlappyBird/GameScene.swift | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)

diff --git a/FlappyBird/GameScene.swift b/FlappyBird/GameScene.swift
index 9e81077..fde53bf 100644
--- a/FlappyBird/GameScene.swift
+++ b/FlappyBird/GameScene.swift
@@ -9,8 +9,8 @@
 import SpriteKit
 
 class GameScene: SKScene, SKPhysicsContactDelegate{
-    let verticalPipeGap = 150.0
-    
+    var verticalPipeGap = 200.0
+    var level:Int = 0
     var bird:SKSpriteNode!
     var skyColor:SKColor!
     var pipeTextureUp:SKTexture!
@@ -21,7 +21,8 @@ class GameScene: SKScene, SKPhysicsContactDelegate{
     var canRestart = Bool()
     var scoreLabelNode:SKLabelNode!
     var score = NSInteger()
-    
+    var stageScore:Int = 0;
+    var levelLabelNode:SKLabelNode!;
     let birdCategory: UInt32 = 1 << 0
     let worldCategory: UInt32 = 1 << 1
     let pipeCategory: UInt32 = 1 << 2
@@ -137,7 +138,13 @@ class GameScene: SKScene, SKPhysicsContactDelegate{
         scoreLabelNode.position = CGPoint( x: self.frame.midX, y: 3 * self.frame.size.height / 4 )
         scoreLabelNode.zPosition = 100
         scoreLabelNode.text = String(score)
+        
+        levelLabelNode = SKLabelNode(fontNamed:"MarkerFelt-Wide")
+        levelLabelNode.position = CGPoint( x: self.frame.midX, y: 1 * self.frame.size.height / 4 )
+        levelLabelNode.zPosition = 10
+        levelLabelNode.text = "lvl:" + String(stageScore)
         self.addChild(scoreLabelNode)
+        self.addChild(levelLabelNode)
         
     }
     
@@ -199,11 +206,15 @@ class GameScene: SKScene, SKPhysicsContactDelegate{
         
         // Reset score
         score = 0
+        stageScore = 0
         scoreLabelNode.text = String(score)
-        
+        levelLabelNode.text = "lvl:" + String(stageScore)
+        verticalPipeGap = 200.0
+            
         // Restart animation
         moving.speed = 1
     }
+    
     override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
         if moving.speed > 0  {
             for _ in touches { // do we need all touches?
@@ -227,6 +238,13 @@ class GameScene: SKScene, SKPhysicsContactDelegate{
                 // Bird has contact with score entity
                 score += 1
                 scoreLabelNode.text = String(score)
+                //Update level and diffeculty
+                if score == stageScore + 8{
+                    stageScore += 8
+                    levelLabelNode.text = "lvl:" + String(stageScore/8)
+                    speed += 0.1
+                    verticalPipeGap = verticalPipeGap - 20.0
+                }
                 
                 // Add a little visual feedback for the score increment
                 scoreLabelNode.run(SKAction.sequence([SKAction.scale(to: 1.5, duration:TimeInterval(0.1)), SKAction.scale(to: 1.0, duration:TimeInterval(0.1))]))

From 0434c58337d6144974525eed157038450d59cf52 Mon Sep 17 00:00:00 2001
From: Hassan Emad <>
Date: Mon, 4 Jan 2021 15:01:46 +0200
Subject: [PATCH 3/3] Bird body impulse decreased

---
 FlappyBird/GameScene.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/FlappyBird/GameScene.swift b/FlappyBird/GameScene.swift
index fde53bf..9d8aea2 100644
--- a/FlappyBird/GameScene.swift
+++ b/FlappyBird/GameScene.swift
@@ -219,7 +219,7 @@ class GameScene: SKScene, SKPhysicsContactDelegate{
         if moving.speed > 0  {
             for _ in touches { // do we need all touches?
                 bird.physicsBody?.velocity = CGVector(dx: 0, dy: 0)
-                bird.physicsBody?.applyImpulse(CGVector(dx: 0, dy: 30))
+                bird.physicsBody?.applyImpulse(CGVector(dx: 0, dy: 22))
             }
         } else if canRestart {
             self.resetScene()