We are going to add more Bird objects to fly around. To do this, we're going to replace our _bird variable with an array and write some code to spawn the birds:
Open the
GameScene.mfile and remove the_birdvariable. Instead, add two new instance variables to theGameSceneclass, as shown in the following code:@implementation GameScene { CCSpriteBatchNode *_batchNode; Hunter *_hunter; float _timeUntilNextBird; NSMutableArray *_birds; }Add following method somewhere below the
update:method:-(void)spawnBird { //1 CGSize viewSize = [CCDirector sharedDirector].viewSize; //2 int maxY = viewSize.height * 0.9f; int minY = viewSize.height * 0.6f; int birdY = minY + arc4random_uniform(maxY - minY); int birdX = viewSize.width * 1.3f; CGPoint birdStart = ccp(birdX, birdY); //3 BirdType birdType = (BirdType)(arc4random_uniform(3)); //4 Bird* bird = [[Bird alloc] initWithBirdType...