IOS飛機大戰OC版

[self.gameTimer addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];

- (void)steps{    _steps++;        if (_steps % 60 == 0)    {        [self updateGameClock];    }        //背景處理    [self.model moveBackground];    [self.bgView setBackgroundFrame1:self.model.bgFrame1 andFrame2:self.model.bgFrame2];        //英雄視圖位置重新整理    self.heroView.center = self.model.hero.position;        //英雄飛機射擊    if (_steps % 10 == 0)    {        [self.model.hero fire];    }        //射擊子彈處理    [self checkBullets];        //初始化敵機    [self initialEnemies];        //敵機移動    [self updateEnemies];        //碰撞檢測    [self collisionDetector];}

_step是靜態長整型，記錄重新整理次數。

- (void)moveBackground{    self.bgFrame1 = CGRectOffset(self.bgFrame1, 0, RMoveOffset);    self.bgFrame2 = CGRectOffset(self.bgFrame2, 0, RMoveOffset);        CGRect topFrame = CGRectOffset(self.gameArea, 0, -self.gameArea.size.height);        if (self.bgFrame1.origin.y >= self.gameArea.size.height)    {        self.bgFrame1 = topFrame;    }    else if (self.bgFrame2.origin.y >= self.gameArea.size.height)    {        self.bgFrame2 = topFrame;    }}

每次重新整理背景視圖向下移動一個點

- (void)collisionDetector{    /******子彈碰撞敵方飛機******/    NSMutableSet *removeBulletSet = [NSMutableSet set];    for (BulletView *bulletView in self.bulletViewSet)    {        Bullet *bullet = bulletView.bullet;                for (EnemyView *enemyView in self.enemyViewSet)        {            Enemy *enemy = enemyView.enemy;                        if (CGRectIntersectsRect(bulletView.frame, enemyView.frame) && !enemy.toBlowup)            {                enemy.hp -= bullet.damage;                                if (enemy.hp <= 0)                {                    enemy.toBlowup = YES;                }                else                {                    if (enemy.type == REnemyTypeBig)                    {                        [enemyView stopAnimating];                    }                    enemyView.image = enemyView.hitImage;                }                [removeBulletSet addObject:bulletView];            }        }    }        for (BulletView *bulletView in removeBulletSet)    {        [bulletView removeFromSuperview];        [self.bulletViewSet removeObject:bulletView];    }        /******爆炸處理******/    if (_steps % 4 == 0)    {        NSMutableSet *toRemovedSet = [NSMutableSet set];                for (EnemyView *enemyView in self.enemyViewSet)        {            Enemy *enemy = enemyView.enemy;                        if (enemy.toBlowup)            {                enemy.speed = 0;                enemyView.image = enemyView.blowupImages[enemy.blowupFrames++];            }                        if (enemy.blowupFrames == enemyView.blowupImages.count)            {                [toRemovedSet addObject:enemyView];            }        }                for (EnemyView *enemyView in toRemovedSet)        {            self.totalScore += enemyView.enemy.prize;            [self updateScoreLabel];                        [self.enemyViewSet removeObject:enemyView];            [enemyView removeFromSuperview];        }        [toRemovedSet removeAllObjects];    }        /******敵機碰撞英雄飛機******/    for (EnemyView *enemyView in self.enemyViewSet)    {        if (CGRectIntersectsRect(enemyView.frame, self.model.hero.collisionRect))        {            [self.heroView stopAnimating];                        NSArray *images = [ImageResources sharedImages].heroBlowupImages;                        self.heroView.image = images[3];            self.heroView.animationImages = images;            self.heroView.animationDuration = 1.0f;            self.heroView.animationRepeatCount = 1;                        [self.heroView startAnimating];                        [self pauseGameTimer];            MyLog(@"英雄死亡");                        [[SoundsTool shareSoundsTool] playSoundWithType:RSoundTypeHeroOver];                        [self endGame];        }    }}

上面是碰撞檢測部分。分別對兩種情況進行了處理，並對爆炸動畫進行了逐幀顯示。

- (void)setToBlowup:(BOOL)toBlowup{    if (toBlowup == NO)    {        _toBlowup = NO;    }    else    {        _toBlowup = YES;                RSoundType soundType;        switch (self.type)        {            case REnemyTypeSmall:                soundType = RSoundTypeSmallBlowup;                break;            case REnemyTypeMiddle:                soundType = RSoundTypeMiddleBlowup;                break;            case REnemyTypeBig:                soundType = RSoundTypeBigBlowup;                break;        }        [[SoundsTool shareSoundsTool] playSoundWithType:soundType];    }}

- (void)playSoundWithType:(RSoundType)soundType{    NSString *soundName = nil;    switch (soundType)    {        case RSoundTypeBullet:            soundName = @"bullet";            break;        case RSoundTypeSmallBlowup:            soundName = @"enemy1_down";            break;        case RSoundTypeMiddleBlowup:            soundName = @"enemy3_down";            break;        case RSoundTypeBigFly:            soundName = @"enemy2_out";            break;        case RSoundTypeBigBlowup:            soundName = @"enemy2_down";            break;        case RSoundTypeHeroOver:            soundName = @"game_over";            break;    }        [self playSoundWithSoundName:soundName];}- (void)playSoundWithSoundName:(NSString *)soundName{    SystemSoundID soundId = [self.soundDict[soundName] unsignedLongValue];        AudioServicesPlaySystemSound(soundId);}

初始化敵機方法

- (void)initialEnemies{    NSInteger level = self.model.gameLevel;    NSInteger flag = RMaxLevel/level;        NSInteger timeS = arc4random_uniform(10*flag)+10/level+flag*1;    NSInteger timeM = arc4random_uniform(50*flag)+200/level+flag*3;    NSInteger timeB = arc4random_uniform(100*flag)+1000/level+flag*10;        Enemy *enemy = nil;    if (_steps % timeS == 0)    {        enemy = [self.model createEnemyWithType:REnemyTypeSmall andSize:[ImageResources sharedImages].smallFlyImage.size];        [self initEnemyViewWithEnemy:enemy];    }    else if (_steps % timeM == 0)    {        enemy = [self.model createEnemyWithType:REnemyTypeMiddle andSize:[ImageResources sharedImages].middleFlyImage.size];        [self initEnemyViewWithEnemy:enemy];    }    else if (_steps % timeB == 0)    {        enemy = [self.model createEnemyWithType:REnemyTypeBig andSize:[[ImageResources sharedImages].bigFlyImages[0] size]];        [self initEnemyViewWithEnemy:enemy];                [[SoundsTool shareSoundsTool] playSoundWithType:RSoundTypeBigFly];    }}

敵機初始化時間這個設定看習慣隨便了，由於遊戲中大部分方法都進行了封裝，就不全貼出來了。可以自行下載，從架構到編寫時間比較短，而且出現道具的功能也沒有實現，希望有改進的建議或者改進後的例子可以交流。