Initial boss fight in demo game

examples/game/lib/game_demo_node.dart

@@ -4,7 +4,7 @@ final double _gameSizeWidth = 320.0;
 double _gameSizeHeight = 320.0;
 
 final double _chunkSpacing = 640.0;
-final int _chunksPerLevel = 8;
+final int _chunksPerLevel = 9;
 
 final bool _drawDebug = false;
 
@@ -210,6 +210,8 @@ class GameDemoNode extends NodeWithSize {
       _objectFactory.addEnemyScoutSwarm(4 + level * 2, yPos);
     } else if (part == 7) {
       _objectFactory.addAsteroids(10 + level * 2, yPos, 0.0 + (level * 0.2).clamp(0.0, 0.7));
+    } else if (part == 8) {
+      _objectFactory.addBossFight(level, yPos);
     }
   }
 

examples/game/lib/game_object_factory.dart

@@ -61,4 +61,13 @@ class GameObjectFactory {
 
     level.addChild(obj);
   }
+
+  void addBossFight(int l, double yPos) {
+    EnemyBoss boss = new EnemyBoss(this);
+    boss.position = new Point(0.0, yPos + _chunkSpacing / 2.0);
+    boss.setupActions();
+
+    level.addChild(boss);
+    playerState.boss = boss;
+  }
 }

examples/game/lib/game_objects.dart

@@ -377,8 +377,6 @@ class EnemyDestroyer extends Obstacle {
   void update(double dt) {
     _countDown -= 1;
     if (_countDown <= 0) {
-      print("SHOOT!!");
-
       // Shoot at player
       EnemyLaser laser = new EnemyLaser(f, rotation, 5.0, new Color(0xffffe38e));
       laser.position = position;
@@ -409,8 +407,6 @@ class EnemyLaser extends Obstacle {
 
     double rad = radians(rotation);
     _movement = new Offset(math.cos(rad) * speed, math.sin(rad) * speed);
-
-    print("LASER!!");
   }
 
   Sprite _sprt;
@@ -421,6 +417,39 @@ class EnemyLaser extends Obstacle {
   }
 }
 
+class EnemyBoss extends Obstacle {
+  EnemyBoss(GameObjectFactory f) : super(f) {
+    radius = 48.0;
+    _sprt = new Sprite(f.sheet["enemy_destroyer_1.png"]);
+    _sprt.scale = 0.64;
+    addChild(_sprt);
+    maxDamage = 40.0;
+
+    constraints = [new ConstraintRotationToNode(f.level.ship, dampening: 0.05)];
+  }
+
+  Sprite _sprt;
+
+  int _countDown = randomInt(120) + 240;
+
+  void update(double dt) {
+    _countDown -= 1;
+    if (_countDown <= 0) {
+      // Shoot at player
+      EnemyLaser laser = new EnemyLaser(f, rotation, 5.0, new Color(0xffffe38e));
+      laser.position = position;
+      f.level.addChild(laser);
+
+      _countDown = 60 + randomInt(120);
+    }
+  }
+
+  void destroy() {
+    f.playerState.boss = null;
+    super.destroy();
+  }
+}
+
 class Collectable extends GameObject {
   Collectable(GameObjectFactory f) : super(f) {
     canDamageShip = false;

examples/game/lib/player_state.dart

@@ -36,6 +36,8 @@ class PlayerState extends Node {
 
   double _scrollSpeedTarget = normalScrollSpeed;
 
+  EnemyBoss boss;
+
   Sprite _sprtBgScore;
   ScoreDisplay _scoreDisplay;
   Sprite _sprtBgCoins;
@@ -87,7 +89,7 @@ class PlayerState extends Node {
     } else if (type == PowerUpType.speedLaser) {
       _speedLaserFrames += 300;
     } else if (type == PowerUpType.speedBoost) {
-      _speedBoostFrames += 300;
+      _speedBoostFrames += 150;
     }
   }
 
@@ -122,10 +124,18 @@ class PlayerState extends Node {
     if (_speedBoostFrames > 0) _speedBoostFrames--;
 
     // Update speed
-    if (speedBoostActive)
-      _scrollSpeedTarget = normalScrollSpeed * 6.0;
-    else
-      _scrollSpeedTarget = normalScrollSpeed;
+    if (boss != null) {
+      Point globalBossPos = boss.convertPointToBoxSpace(Point.origin);
+      if (globalBossPos.y > (_gameSizeHeight - 400.0))
+        _scrollSpeedTarget = 0.0;
+      else
+        _scrollSpeedTarget = normalScrollSpeed;
+    } else {
+      if (speedBoostActive)
+        _scrollSpeedTarget = normalScrollSpeed * 6.0;
+      else
+        _scrollSpeedTarget = normalScrollSpeed;
+    }
 
     scrollSpeed = GameMath.filter(scrollSpeed, _scrollSpeedTarget, 0.1);
   }