ios - 将我的敌人类实现到游戏场景

Question

我对编程还很陌生，我尝试做的是:所以我将我的敌人从我的游戏场景中分离到不同的类。在 Enemy class.m 文件中，我声明了 6 个方法。每个方法都代表一个新关卡，将从游戏场景中调用。所以在方法中我声明了 Sprite 的图像、路径、射击粒子类型等。下面是 EnemyClass.m 文件中 1 级方法的示例:

+(void)enemiesLevel1
{
EnemyName = @"enemy1";
SKSpriteNode* enemy = [SKSpriteNode spriteNodeWithImageNamed:EnemyName];
pathSpeed = 3;
CGPathRef path = CGPathCreateWithEllipseInRect(CGRectMake(0,0,400,400), NULL);
SKAction *followTrack = [SKAction followPath:path
                                    asOffset:NO
                                orientToPath:YES
                                    duration:pathSpeed];

SKAction *forever = [SKAction repeatActionForever:followTrack];
SKAction *addEnemy = [SKAction runBlock:^{
    [GameScene addChild: enemy];
}];
SKAction *enemySequence = [SKAction sequence:@[addEnemy, forever]];

[GameScene runAction: enemySequence];
}

但是，Xcode 指出了两个问题:

No known class method for selector "addChild"

和

No known class method for selector "runAction"

我正在调用 GameScene.m 中的方法:

[EnemyClass enemiesLevel1]

这似乎是一个愚蠢的问题，但我还是新手，非常感谢任何帮助!

Answer 1

问题是，您应该在 GameScene 中创建 EnemyClasss 实例，然后使用它；你的代码应该是这样的；

在 EnemyClass.m 中:

-(void)enemiesLevel1
{
EnemyName = @"enemy1";
SKSpriteNode* enemy = [SKSpriteNode spriteNodeWithImageNamed:EnemyName];
pathSpeed = 3;
CGPathRef path = CGPathCreateWithEllipseInRect(CGRectMake(0,0,400,400), NULL);
SKAction *followTrack = [SKAction followPath:path
                                    asOffset:NO
                                orientToPath:YES
                                    duration:pathSpeed];

SKAction *forever = [SKAction repeatActionForever:followTrack];
SKAction *addEnemy = [SKAction runBlock:^{
    [self addChild: enemy];
}];

SKAction *enemySequence = [SKAction sequence:@[addEnemy, forever]];

[self runAction: enemySequence];
}

在 GameScene.m 中:

EnemyClass *enemy= [[EnemyClass alloc] initWithSize:self.size];

然后你可以使用:

[self addChild: [enemy enemiesLevel1]];