User input can move the character. Implemented the background and moving objects. Implmented platforms.

lib/GameState.dart

@@ -0,0 +1,55 @@
+import 'dart:math';
+
+import 'package:flame/components.dart';
+import 'package:flutter/material.dart';
+
+class GameState extends Component {
+  int numCoins = 0;
+  int distance = 0;
+  late Rect square;
+  late Color color = Colors.white;
+  int start = 0;
+  late ColorTween tween;
+  static const int CIRCUIT_PERIOD = 500000;
+
+  @override
+  void update(double dt) {
+    super.update(dt);
+    distance = DateTime.now().microsecondsSinceEpoch - start;
+    color = tween.lerp(sin(distance.toDouble() / CIRCUIT_PERIOD))!;
+  }
+
+  void addCoin() {
+    numCoins++;
+  }
+
+  @override
+  void render(Canvas c) {
+    super.render(c);
+    c.drawRect(square, Paint()..color = color);
+  }
+
+  Future load(Vector2 size) async {
+    square = Rect.fromLTWH(0, 0, size.x, size.y);
+    reset();
+  }
+
+  void setSize(Vector2 size) {
+    square = Rect.fromLTWH(0, 0, size.x, size.y);
+  }
+
+  void reset() {
+    start = DateTime.now().microsecondsSinceEpoch;
+    tween = ColorTween(begin: Colors.yellow, end: Colors.yellowAccent);
+  }
+
+  double getVelocity() {
+    if (distance > 50000000) {
+      return 250.0;
+    } else if (distance > 10000000)
+      return 175.0;
+    else {
+      return 100.0;
+    }
+  }
+}

lib/MovingObject.dart

@@ -0,0 +1,41 @@
+import 'package:flutter/material.dart';
+
+import 'package:firo_runner/main.dart';
+import 'package:flame/components.dart';
+
+class MovingObject extends Component {
+  late SpriteAnimationGroupComponent sprite;
+  MyGame gameRef;
+
+  MovingObject(this.gameRef);
+
+  void setPosition(double x, double y) {
+    sprite.position = Vector2(x, y);
+  }
+
+  void setSize(double x, double y) {
+    sprite.size = Vector2(x, y);
+  }
+
+  Sprite getSprite() {
+    return sprite.animation!.getSprite();
+  }
+
+  @override
+  void render(Canvas c) {
+    super.render(c);
+  }
+
+  @override
+  void update(double dt) {
+    super.update(dt);
+    sprite.update(dt);
+    double velocity = gameRef.gameState.getVelocity();
+    sprite.position = sprite.position - Vector2(velocity * dt, 0);
+  }
+
+  @override
+  void remove() {
+    super.remove();
+  }
+}

lib/Platform.dart

@@ -0,0 +1,45 @@
+import 'dart:math';
+
+import 'package:firo_runner/MovingObject.dart';
+import 'package:firo_runner/main.dart';
+import 'package:flame/components.dart';
+import 'package:flutter/material.dart';
+
+enum PlatformState { normal }
+
+class Platform extends MovingObject {
+  Platform(MyGame gameRef) : super(gameRef) {
+    var random = Random();
+    int version = random.nextInt(3) + 1;
+    var platform = gameRef.platformHolder.getPlatform(version);
+    SpriteAnimation normal = SpriteAnimation.fromFrameData(
+      platform,
+      SpriteAnimationData.sequenced(
+        amount: 7,
+        stepTime: 0.1,
+        textureSize: Vector2(800, 510),
+      ),
+    );
+
+    sprite = SpriteAnimationGroupComponent(
+      animations: {
+        PlatformState.normal: normal,
+      },
+      current: PlatformState.normal,
+    );
+
+    setSize(
+      gameRef.blockSize * (platform!.width / platform!.height / 7),
+      gameRef.blockSize,
+    );
+  }
+
+  double getRightEnd() {
+    return sprite.position.x + sprite.width;
+  }
+
+  @override
+  void render(Canvas c) {
+    getSprite().render(c, position: sprite.position, size: sprite.size);
+  }
+}

lib/PlatformLoader.dart

@@ -0,0 +1,91 @@
+import 'dart:math';
+
+import 'package:firo_runner/main.dart';
+import 'package:flame/flame.dart';
+import 'package:flutter/material.dart';
+import 'Platform.dart';
+
+class PlatformHolder {
+  var platform1;
+  var platform2;
+  var platform3;
+  late List<List<Platform>> platforms = [];
+  Random random = Random();
+
+  Future loadPlatforms() async {
+    platform1 = await Flame.images.load('p1-frames.png');
+    platform2 = await Flame.images.load('p2-frames.png');
+    platform3 = await Flame.images.load('p3-frames.png');
+    for (int i = 0; i < 9; i++) {
+      platforms.add([]);
+    }
+  }
+
+  getPlatform(int imageNumber) {
+    switch (imageNumber) {
+      case 1:
+        return platform1;
+      case 2:
+        return platform2;
+      default:
+        return platform3;
+    }
+  }
+
+  bool generatePlatform(MyGame gameRef, int level, bool force) {
+    double xCordinate = 0;
+    if (platforms[level].isNotEmpty) {
+      xCordinate = platforms[level].last.getRightEnd();
+    }
+
+    if (xCordinate > gameRef.size.x + 1000) {
+      return true;
+    } else {
+      Platform platform = Platform(gameRef);
+      platform.setPosition(xCordinate, gameRef.blockSize * level);
+      platforms[level].add(platform);
+      print(platforms[0].length);
+      return false;
+    }
+  }
+
+  void render(Canvas canvas) {
+    for (List<Platform> platformLevel in platforms) {
+      for (Platform p in platformLevel) {
+        p.render(canvas);
+      }
+    }
+  }
+
+  void update(double dt) {
+    for (List<Platform> platformLevel in platforms) {
+      for (Platform p in platformLevel) {
+        p.update(dt);
+      }
+    }
+  }
+
+  void removePast(MyGame gameRef) {
+    for (List<Platform> platformLevel in platforms) {
+      int removed = 0;
+      while (platformLevel.isNotEmpty &&
+          platformLevel[0].sprite.position.x + platformLevel[0].sprite.width <
+              0) {
+        platformLevel.removeAt(0);
+        removed++;
+      }
+      if (platformLevel.isNotEmpty &&
+          platformLevel.length > 3 &&
+          random.nextInt(100) > 65 &&
+          removed > 0) {
+        int secondToLast = platformLevel.length - 3;
+        double secondToLastPosition =
+            platformLevel.elementAt(secondToLast).sprite.x;
+        if (secondToLastPosition > gameRef.size.x) {
+          platformLevel.removeAt(secondToLast);
+          platformLevel.removeAt(secondToLast + 1);
+        }
+      }
+    }
+  }
+}

lib/Runner.dart

@@ -70,10 +70,10 @@ class Runner extends Component with HasGameRef<MyGame> {
         sprite.addEffect(MoveEffect(
           path: [
             sprite.position,
-            Vector2(sprite.x, (level - 2) * gameRef.blockSize),
+            Vector2(sprite.x, (level - 3) * gameRef.blockSize),
           ],
           speed: 50,
-          curve: Curves.bounceIn,
+          curve: Curves.ease,
           onComplete: () {
             updateLevel();
             runnerState = "run";
@@ -245,7 +245,7 @@ class Runner extends Component with HasGameRef<MyGame> {
       'death-normal-frames.png',
       SpriteAnimationData.sequenced(
         amount: 20,
-        stepTime: 0.1,
+        stepTime: 0.05,
         textureSize: Vector2(512, 512),
         loop: false,
       ),

lib/main.dart

@@ -1,3 +1,7 @@
+import 'package:firo_runner/GameState.dart';
+import 'package:firo_runner/MovingObject.dart';
+import 'package:firo_runner/Platform.dart';
+import 'package:firo_runner/PlatformLoader.dart';
 import 'package:flame/components.dart';
 import 'package:flame/extensions.dart';
 import 'package:flame/flame.dart';
@@ -29,10 +33,13 @@ class MyGame extends BaseGame with PanDetector, TapDetector, KeyboardEvents {
     config: TextPaintConfig(fontSize: 48.0),
   );
 
+  late PlatformHolder platformHolder;
+
   late Sprite background1;
   late Sprite background2;
   late Runner runner;
-  late var background;
+  late GameState gameState;
+  var background;
   late var platform1;
   late var platform2;
   late var platform3;
@@ -47,12 +54,16 @@ class MyGame extends BaseGame with PanDetector, TapDetector, KeyboardEvents {
   var background2Position;
   late double blockSize;
 
+  bool loaded = false;
+
   @override
   Future<void> onLoad() async {
+    debugMode = true;
     print("load");
     FlameAudio.bgm.initialize();
     background = await Flame.images.load('bg.png');
     background1 = Sprite(background);
+    print(background.height.toString() + " " + background.width.toString());
     background2 = Sprite(background);
     platform1 = await Flame.images.load('platform1.png');
     platform2 = await Flame.images.load('platform2.png');
@@ -61,6 +72,12 @@ class MyGame extends BaseGame with PanDetector, TapDetector, KeyboardEvents {
     bug = await Flame.images.load('bug.png');
     coin = await Flame.images.load('coin.png');
 
+    platformHolder = PlatformHolder();
+    await platformHolder.loadPlatforms();
+
+    gameState = GameState();
+    await gameState.load(size);
+
     runner = Runner();
     await runner.load(loadSpriteAnimation);
     runner.setSize(runnerSize, blockSize);
@@ -68,28 +85,48 @@ class MyGame extends BaseGame with PanDetector, TapDetector, KeyboardEvents {
     runner.setPosition(runnerPosition);
     add(runner);
 
+    // Generate the first 4 Platforms that will always be there at the start.
+    for (int i = 0; i < 4; i++) {
+      platformHolder.generatePlatform(this, 8, true);
+    }
+    fillScreen();
+
     FlameAudio.bgm.play('Infinite_Spankage_M.mp3');
+    loaded = true;
+  }
+
+  void fillScreen() {
+    for (int i = 2; i < 9; i = i + 3) {
+      while (!platformHolder.generatePlatform(this, i, false));
+    }
   }
 
   @override
   void render(Canvas canvas) {
+    gameState.render(canvas);
     background1.render(
       canvas,
       position: Vector2(0, 0),
-      size: backgroundSize,
+      size: Vector2(size.y * (background!.width / background!.height), size.y),
     );
     super.render(canvas);
+    platformHolder.render(canvas);
     final fpsCount = fps(1);
-    // textPaint.render(
-    //   canvas,
-    //   fpsCount.toString(),
-    //   Vector2(0, 0),
-    // );
+    textPaint.render(
+      canvas,
+      fpsCount.toString(),
+      Vector2(0, 0),
+    );
   }
 
   @override
   void update(double dt) {
+    platformHolder.removePast(this);
+    fillScreen();
     super.update(dt);
+    gameState.update(dt);
+    platformHolder.update(dt);
+    // print(gameState.distance);
   }
 
   @override
@@ -102,7 +139,11 @@ class MyGame extends BaseGame with PanDetector, TapDetector, KeyboardEvents {
       size.y / 9,
     );
 
-    backgroundSize = Vector2(size.x * 2, size.y);
+    if (loaded) {
+      backgroundSize =
+          Vector2(size.y * (background!.width / background!.height), size.y);
+      gameState.setSize(size);
+    }
   }
 
   // Mobile controls